diff --git a/doc/contributions.txt b/doc/contributions.txt
index 4c56ef86dcab421c8c8ea89967292b0a313e79b2..fa40bd327a63149280f3e678faa2c7ca5f201c9d 100755
--- a/doc/contributions.txt
+++ b/doc/contributions.txt
@@ -1127,6 +1127,7 @@ Nicky Dasmijn
 	SL-14541
 	SL-16438
 	SL-17218
+	SL-17238
 	SL-17585
 Nicky Perian
 	OPEN-1
diff --git a/indra/CMakeLists.txt b/indra/CMakeLists.txt
index 6e56a87ed9607aa3fea3096bfa1ac6c33f4e2f95..3826ed438c335f77fceb298050f26324749e7a48 100644
--- a/indra/CMakeLists.txt
+++ b/indra/CMakeLists.txt
@@ -3,24 +3,50 @@
 # cmake_minimum_required should appear before any
 # other commands to guarantee full compatibility
 # with the version specified
-cmake_minimum_required(VERSION 3.15.0 FATAL_ERROR)
-cmake_policy(SET CMP0063 NEW)
+## 3.8 added VS_DEBUGGER_WORKING_DIRECTORY support
+## 3.13/12 is needed for add_link_options/add_compile_definitions
+## 3.14 added FILE CREATE_LINK
+## 3.16 is needed for target_precompile_headers
+## Nicky: Ideally we want at least 3.21 for good preset support
+##   We're not there yet, but once done, there is a kludge in Linking.cmake
+#    "if(${CMAKE_VERSION} VERSION_LESS "3.20.0")" that can also be removed
+cmake_minimum_required(VERSION 3.16.0 FATAL_ERROR)
 
 set(ROOT_PROJECT_NAME "Alchemy" CACHE STRING
     "The root project/makefile/solution name. Defaults to Alchemy.")
 project(${ROOT_PROJECT_NAME})
 
-set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
+set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake"  "${CMAKE_CURRENT_BINARY_DIR}")
 
-set(CMAKE_C_STANDARD 11)
+include(conanbuildinfo OPTIONAL RESULT_VARIABLE USE_CONAN )
+if( USE_CONAN )
+    set( USE_CONAN ON )
+    set( USE_AUTOBUILD_3P OFF )
+    conan_basic_setup(TARGETS NO_OUTPUT_DIRS)
+    add_compile_definitions(LL_USESYSTEMLIBS USE_CONAN NO_AUTOBUILD_3P)
+else()
+  set( USE_CONAN OFF )
+  set( USE_AUTOBUILD_3P ON )
+endif()
+
+# The viewer code base can now be successfully compiled with -std=c++14. But
+# turning that on in the generic viewer-build-variables/variables file would
+# potentially require tweaking each of our ~50 third-party library builds.
+# Until we decide to set -std=c++14 in viewer-build-variables/variables, set
+# it locally here: we want to at least prevent inadvertently reintroducing
+# viewer code that would fail with C++14.
 if(MSVC)
   set(CMAKE_CXX_STANDARD 20)
 else()
   set(CMAKE_CXX_STANDARD 17)
 endif()
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
+
+
+
 if (NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
       "Build type.  One of: Debug Release RelWithDebInfo" FORCE)
@@ -60,20 +86,16 @@ add_subdirectory(${LIBS_OPEN_PREFIX}llplugin)
 add_subdirectory(${LIBS_OPEN_PREFIX}llui)
 add_subdirectory(${LIBS_OPEN_PREFIX}viewer_components)
 
+if( LL_TESTS )
 # Legacy C++ tests. Build always, run if LL_TESTS is true.
 add_subdirectory(${VIEWER_PREFIX}test)
+endif()
 
 if (ENABLE_MEDIA_PLUGINS)
 # viewer media plugins
 add_subdirectory(${LIBS_OPEN_PREFIX}media_plugins)
 endif (ENABLE_MEDIA_PLUGINS)
 
-# sets the 'startup project' for debugging from visual studio.
-set_property(
-    DIRECTORY ${VIEWER_PREFIX}
-    PROPERTY VS_STARTUP_PROJECT alchemy-bin
-    )
-
 if (USE_BUGSPLAT)
     if (BUGSPLAT_DB)
         message(STATUS "Building with BugSplat; database '${BUGSPLAT_DB}'")
@@ -87,6 +109,12 @@ add_dependencies(viewer alchemy-bin)
 
 add_subdirectory(${VIEWER_PREFIX}doxygen EXCLUDE_FROM_ALL)
 
+# sets the 'startup project' for debugging from visual studio.
+set_property(
+        DIRECTORY ${VIEWER_PREFIX}
+        PROPERTY VS_STARTUP_PROJECT ${VIEWER_BINARY_NAME}
+        )
+
 if (LL_TESTS)
   # Define after the custom targets are created so
   # individual apps can add themselves as dependencies
diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 2980c88f14fcc3e34d4425ed4afd50883dd433f9..7a92b8bd068e17cf6cd1cb91a0701dc1814a7461 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -12,9 +12,7 @@
 #   Also realize that CMAKE_CXX_FLAGS may already be partially populated on
 #   entry to this file.
 #*****************************************************************************
-
-if(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
-set(${CMAKE_CURRENT_LIST_FILE}_INCLUDED "YES")
+include_guard()
 
 include(CheckCXXCompilerFlag)
 include(Variables)
@@ -24,25 +22,24 @@ set(Python3_FIND_VIRTUALENV FIRST)
 find_package(Python3 COMPONENTS Interpreter)
 
 # Portable compilation flags.
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DADDRESS_SIZE=${ADDRESS_SIZE}")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DADDRESS_SIZE=${ADDRESS_SIZE}")
-set(CMAKE_CXX_FLAGS_DEBUG "-D_DEBUG -DLL_DEBUG=1")
-set(CMAKE_CXX_FLAGS_RELEASE
-    "-DLL_RELEASE=1 -DLL_RELEASE_FOR_DOWNLOAD=1 -DNDEBUG")
-set(CMAKE_CXX_FLAGS_RELWITHDEBINFO
-    "-DLL_RELEASE=1 -DNDEBUG -DLL_RELEASE_WITH_DEBUG_INFO=1")
+add_compile_definitions(
+    ADDRESS_SIZE=${ADDRESS_SIZE}
+    $<$<CONFIG:Debug>:-D_DEBUG>
+    $<$<CONFIG:Debug>:-DLL_DEBUG=1>
+    $<$<CONFIG:RelWithDebInfo>:-DLL_RELEASE=1 -DNDEBUG -DLL_RELEASE_WITH_DEBUG_INFO=1>
+    $<$<CONFIG:Release>:-DLL_RELEASE=1 -DLL_RELEASE_FOR_DOWNLOAD=1 -DNDEBUG>
+    )
 # Configure crash reporting
 set(RELEASE_CRASH_REPORTING OFF CACHE BOOL "Enable use of crash reporting in release builds")
 set(NON_RELEASE_CRASH_REPORTING OFF CACHE BOOL "Enable use of crash reporting in developer builds")
 
 if(RELEASE_CRASH_REPORTING)
-  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DLL_SEND_CRASH_REPORTS=1")
+  add_compile_definitions( LL_SEND_CRASH_REPORTS=1)
 endif()
 
 if(NON_RELEASE_CRASH_REPORTING)
-  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -DLL_SEND_CRASH_REPORTS=1")
-  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DLL_SEND_CRASH_REPORTS=1")
-endif()  
+  add_compile_definitions( LL_SEND_CRASH_REPORTS=1)
+endif()
 
 # Don't bother with a MinSizeRel build.
 set(CMAKE_CONFIGURATION_TYPES "RelWithDebInfo;Release;Debug" CACHE STRING
@@ -65,11 +62,10 @@ if (WINDOWS)
   set(BUILD_SHARED_LIBS OFF)
 
   if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
+    add_compile_options(/MP)
+
   elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m${ADDRESS_SIZE}")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m${ADDRESS_SIZE}")
+    add_compile_options(-m${ADDRESS_SIZE})
   endif ()
 
   set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Od /Zi /MDd /EHsc -D_SCL_SECURE_NO_WARNINGS=1")
@@ -311,10 +307,7 @@ if (DARWIN)
   set(CMAKE_CXX_LINK_FLAGS "-Wl,-headerpad_max_install_names,-search_paths_first")
   set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_CXX_LINK_FLAGS}")
   set(DARWIN_extra_cstar_flags "-gdwarf-2")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 ${DARWIN_extra_cstar_flags}")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 ${DARWIN_extra_cstar_flags}")
-  # NOTE: it's critical that the optimization flag is put in front.
-  # NOTE: it's critical to have both CXX_FLAGS and C_FLAGS covered.
+  add_compile_options(-O3 ${DARWIN_extra_cstar_flags})
 
   add_definitions(
       -DBOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE=1
@@ -322,7 +315,6 @@ if (DARWIN)
       )
 endif (DARWIN)
 
-
 if (LINUX OR DARWIN)
   if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     set(GCC_WARNINGS "-Wall -Wno-sign-compare -Wno-unused-parameter -Wno-unused-but-set-parameter -Wno-ignored-qualifiers -Wno-unused-function")
@@ -344,18 +336,13 @@ if (LINUX OR DARWIN)
   set(CMAKE_C_FLAGS "${GCC_WARNINGS} ${CMAKE_C_FLAGS}")
   set(CMAKE_CXX_FLAGS "${GCC_CXX_WARNINGS} ${CMAKE_CXX_FLAGS}")
 
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m${ADDRESS_SIZE}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m${ADDRESS_SIZE}")
+  add_compile_options(-m${ADDRESS_SIZE})
 endif (LINUX OR DARWIN)
 
 add_definitions(-DBOOST_BIND_GLOBAL_PLACEHOLDERS)
 
 add_definitions(-DOPENSSL_API_COMPAT=0x30000000L)
 
-if (USESYSTEMLIBS)
-  add_definitions(-DLL_USESYSTEMLIBS=1)
-endif (USESYSTEMLIBS)
-
 option(RELEASE_SHOW_ASSERTS "Enable asserts in release builds" OFF)
 
 if(RELEASE_SHOW_ASSERTS)
@@ -380,4 +367,3 @@ if(SDL_FOUND)
 endif()
 
 
-endif(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
diff --git a/indra/cmake/APR.cmake b/indra/cmake/APR.cmake
index 94de0bec6d30edc25c55c8452ef1c9fb6c933277..cb6db2ea0baa8c8c4cf49e6423025f1fa1dd7240 100644
--- a/indra/cmake/APR.cmake
+++ b/indra/cmake/APR.cmake
@@ -1,53 +1,40 @@
 include(Linking)
 include(Prebuilt)
 
-set(APR_FIND_QUIETLY ON)
-set(APR_FIND_REQUIRED ON)
+include_guard()
 
-set(APRUTIL_FIND_QUIETLY ON)
-set(APRUTIL_FIND_REQUIRED ON)
+add_library( ll::apr INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindAPR)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(apr_suite)
-  if (WINDOWS)
-    set(APR_selector "")
-    set(APR_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}apr-1.lib
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}apr-1.lib
-      )
-    set(APRICONV_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}apriconv-1.lib
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}apriconv-1.lib
-      )
-    set(APRUTIL_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}aprutil-1.lib ${APRICONV_LIBRARIES}
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}aprutil-1.lib ${APRICONV_LIBRARIES}
-      )
-  elseif(DARWIN)
-    set(APR_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/libapr-1.a
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libapr-1.a
-      )
-    set(APRICONV_LIBRARIES iconv)
-    set(APRUTIL_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/libaprutil-1.a ${APRICONV_LIBRARIES}
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libaprutil-1.a ${APRICONV_LIBRARIES}
-      )
-  else()
-    set(APR_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/libapr-1.a
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libapr-1.a
-      )
-    set(APRUTIL_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/libaprutil-1.a
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libaprutil-1.a
-      )
-  endif ()
-  set(APR_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/apr-1)
+use_system_binary( apr apr-util )
+use_prebuilt_binary(apr_suite)
 
-  if (LINUX)
-    list(APPEND APRUTIL_LIBRARIES rt)
-  endif (LINUX)
-endif (USESYSTEMLIBS)
+if (WINDOWS)
+  set(APR_selector "")
+  target_link_libraries( ll::apr INTERFACE
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}apr-1.lib
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}apr-1.lib
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}apriconv-1.lib
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}apriconv-1.lib
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/${APR_selector}aprutil-1.lib
+	  optimized ${ARCH_PREBUILT_DIRS_RELEASE}/${APR_selector}aprutil-1.lib
+          )
+elseif (DARWIN)
+  target_link_libraries( ll::apr INTERFACE
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/libapr-1.a
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libapr-1.a
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/libaprutil-1.a
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libaprutil-1.a
+          iconv
+          )
+
+else()
+  target_link_libraries( ll::apr INTERFACE
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/libapr-1.a
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libapr-1.a
+          debug ${ARCH_PREBUILT_DIRS_DEBUG}/libaprutil-1.a
+          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libaprutil-1.a
+          iconv
+          rt
+          )
+endif ()
+target_include_directories( ll::apr SYSTEM INTERFACE  ${LIBS_PREBUILT_DIR}/include/apr-1 )
diff --git a/indra/cmake/Atmosphere.cmake b/indra/cmake/Atmosphere.cmake
deleted file mode 100644
index 9c14df2a11cc8e6167c76f4d846327d4f842d063..0000000000000000000000000000000000000000
--- a/indra/cmake/Atmosphere.cmake
+++ /dev/null
@@ -1,5 +0,0 @@
-# -*- cmake -*-
-include(Prebuilt)
-use_prebuilt_binary(libatmosphere)
-set(LIBATMOSPHERE_LIBRARIES atmosphere)
-set(LIBATMOSPHERE_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/atmosphere)
diff --git a/indra/cmake/Audio.cmake b/indra/cmake/Audio.cmake
index 87779a3ff2057622cfe913754370f255a3c90a95..fc4a77045d7461e5fd61b866615870dc06c1ef1a 100644
--- a/indra/cmake/Audio.cmake
+++ b/indra/cmake/Audio.cmake
@@ -2,40 +2,31 @@
 include(Linking)
 include(Prebuilt)
 
-if (USESYSTEMLIBS)
-  include(FindPkgConfig)
-  pkg_check_modules(OGG REQUIRED ogg)
-  pkg_check_modules(VORBIS REQUIRED vorbis)
-  pkg_check_modules(VORBISENC REQUIRED vorbisenc)
-  pkg_check_modules(VORBISFILE REQUIRED vorbisfile)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(ogg_vorbis)
-  set(VORBIS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-  set(VORBISENC_INCLUDE_DIRS ${VORBIS_INCLUDE_DIRS})
-  set(VORBISFILE_INCLUDE_DIRS ${VORBIS_INCLUDE_DIRS})
+include_guard()
+add_library( ll::vorbis INTERFACE IMPORTED )
 
-  if (WINDOWS)
-    set(OGG_LIBRARIES
+use_system_binary(vorbis)
+use_prebuilt_binary(ogg_vorbis)
+target_include_directories( ll::vorbis SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include )
+
+if (WINDOWS)
+  target_link_libraries(ll::vorbis INTERFACE
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libogg.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libogg.lib)
-    set(VORBIS_LIBRARIES
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libogg.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libvorbis.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbis.lib)
-    set(VORBISFILE_LIBRARIES
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbis.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libvorbisfile.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisfile.lib)
-  else (WINDOWS)
-    set(OGG_LIBRARIES 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisfile.lib
+	)
+else (WINDOWS)
+  target_link_libraries(ll::vorbis INTERFACE
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libogg.a
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libogg.a)
-    set(VORBIS_LIBRARIES 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libogg.a
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libvorbis.a
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbis.a)
-    set(VORBISENC_LIBRARIES 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbis.a
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libvorbisenc.a
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisenc.a)
-    set(VORBISFILE_LIBRARIES 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisenc.a
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libvorbisfile.a
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisfile.a)
-  endif (WINDOWS)
-endif (USESYSTEMLIBS)
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libvorbisfile.a
+	)
+endif (WINDOWS)
diff --git a/indra/cmake/Boost.cmake b/indra/cmake/Boost.cmake
index e2708e4e1827777998fa4b3ca1a5353c2a073fdf..e68d20ff538039c398b5533701cdffb6e42197f4 100644
--- a/indra/cmake/Boost.cmake
+++ b/indra/cmake/Boost.cmake
@@ -1,121 +1,86 @@
 # -*- cmake -*-
 include(Prebuilt)
-include(Linking)
 
-set(Boost_FIND_QUIETLY ON)
-set(Boost_FIND_REQUIRED ON)
+include_guard()
 
-if (USESYSTEMLIBS)
-  include(FindBoost)
+add_library( ll::boost INTERFACE IMPORTED )
+if( USE_CONAN )
+  target_link_libraries( ll::boost INTERFACE CONAN_PKG::boost )
+  target_compile_definitions( ll::boost INTERFACE BOOST_ALLOW_DEPRECATED_HEADERS BOOST_BIND_GLOBAL_PLACEHOLDERS )
+  return()
+endif()
 
-  set(BOOST_CONTEXT_LIBRARY boost_context-mt)
-  set(BOOST_FIBER_LIBRARY boost_fiber-mt)
-  set(BOOST_FILESYSTEM_LIBRARY boost_filesystem-mt)
-  set(BOOST_PROGRAM_OPTIONS_LIBRARY boost_program_options-mt)
-  set(BOOST_REGEX_LIBRARY boost_regex-mt)
-  set(BOOST_SIGNALS_LIBRARY boost_signals-mt)
-  set(BOOST_SYSTEM_LIBRARY boost_system-mt)
-  set(BOOST_THREAD_LIBRARY boost_thread-mt)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(boost)
-  set(Boost_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
+use_prebuilt_binary(boost)
 
-  # As of sometime between Boost 1.67 and 1.72, Boost libraries are suffixed
-  # with the address size.
-  set(addrsfx "-x${ADDRESS_SIZE}")
+# As of sometime between Boost 1.67 and 1.72, Boost libraries are suffixed
+# with the address size.
+set(addrsfx "-x${ADDRESS_SIZE}")
 
-  if (WINDOWS)
-    set(BOOST_CONTEXT_LIBRARY 
+if (WINDOWS)
+  target_link_libraries( ll::boost INTERFACE
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_context-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_context-mt-gd${addrsfx}.lib)
-    set(BOOST_FIBER_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_context-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_fiber-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_fiber-mt-gd${addrsfx}.lib)
-    set(BOOST_FILESYSTEM_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_fiber-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_filesystem-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_filesystem-mt-gd${addrsfx}.lib)
-    set(BOOST_PROGRAM_OPTIONS_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_filesystem-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_program_options-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_program_options-mt-gd${addrsfx}.lib)
-    set(BOOST_REGEX_LIBRARY
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_program_options-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_regex-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_regex-mt-gd${addrsfx}.lib)
-    set(BOOST_SIGNALS_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_regex-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_signals-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_signals-mt-gd${addrsfx}.lib)
-    set(BOOST_STACKTRACE_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_signals-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_stacktrace_windbg-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_stacktrace_windbg-mt-gd${addrsfx}.lib)
-    set(BOOST_SYSTEM_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_stacktrace_windbg-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_system-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_system-mt-gd${addrsfx}.lib)
-    set(BOOST_THREAD_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_system-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_thread-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_thread-mt-gd${addrsfx}.lib)
-    set(BOOST_WAVE_LIBRARY 
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_thread-mt-gd${addrsfx}.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libboost_wave-mt${addrsfx}.lib
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_wave-mt-gd${addrsfx}.lib)
-  elseif (LINUX)
-    set(BOOST_CONTEXT_LIBRARY
+        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libboost_wave-mt-gd${addrsfx}.lib
+	)
+elseif (LINUX)
+  target_link_libraries( ll::boost INTERFACE
         optimized boost_context-mt${addrsfx}
-        debug boost_context-mt${addrsfx}-d)
-    set(BOOST_FIBER_LIBRARY
+        debug boost_context-mt${addrsfx}-d
         optimized boost_fiber-mt${addrsfx}
-        debug boost_fiber-mt${addrsfx}-d)
-    set(BOOST_FILESYSTEM_LIBRARY
+        debug boost_fiber-mt${addrsfx}-d
         optimized boost_filesystem-mt${addrsfx}
-        debug boost_filesystem-mt${addrsfx}-d)
-    set(BOOST_PROGRAM_OPTIONS_LIBRARY
+        debug boost_filesystem-mt${addrsfx}-d
         optimized boost_program_options-mt${addrsfx}
-        debug boost_program_options-mt${addrsfx}-d)
-    set(BOOST_REGEX_LIBRARY
+        debug boost_program_options-mt${addrsfx}-d
         optimized boost_regex-mt${addrsfx}
-        debug boost_regex-mt${addrsfx}-d)
-    set(BOOST_SIGNALS_LIBRARY
+        debug boost_regex-mt${addrsfx}-d
         optimized boost_signals-mt${addrsfx}
-        debug boost_signals-mt${addrsfx}-d)
-    set(BOOST_SYSTEM_LIBRARY
+        debug boost_signals-mt${addrsfx}-d
         optimized boost_system-mt${addrsfx}
-        debug boost_system-mt${addrsfx}-d)
-    set(BOOST_THREAD_LIBRARY
+        debug boost_system-mt${addrsfx}-d
         optimized boost_thread-mt${addrsfx}
-        debug boost_thread-mt${addrsfx}-d)
-    set(BOOST_WAVE_LIBRARY
+        debug boost_thread-mt${addrsfx}-d
         optimized boost_wave-mt${addrsfx}
-        debug boost_wave-mt${addrsfx}-d)
-  elseif (DARWIN)
-    set(BOOST_CONTEXT_LIBRARY
+        debug boost_wave-mt${addrsfx}-d
+	rt
+	)
+elseif (DARWIN)
+  target_link_libraries( ll::boost INTERFACE
         optimized boost_context-mt
-        debug boost_context-mt-d)
-    set(BOOST_FIBER_LIBRARY
+        debug boost_context-mt-d
         optimized boost_fiber-mt
-        debug boost_fiber-mt-d)
-    set(BOOST_FILESYSTEM_LIBRARY
+        debug boost_fiber-mt-d
         optimized boost_filesystem-mt
-        debug boost_filesystem-mt-d)
-    set(BOOST_PROGRAM_OPTIONS_LIBRARY
+        debug boost_filesystem-mt-d
         optimized boost_program_options-mt
-        debug boost_program_options-mt-d)
-    set(BOOST_REGEX_LIBRARY
+        debug boost_program_options-mt-d
         optimized boost_regex-mt
-        debug boost_regex-mt-d)
-    set(BOOST_SIGNALS_LIBRARY
+        debug boost_regex-mt-d
         optimized boost_signals-mt
-        debug boost_signals-mt-d)
-    set(BOOST_SYSTEM_LIBRARY
+        debug boost_signals-mt-d
         optimized boost_system-mt
-        debug boost_system-mt-d)
-    set(BOOST_THREAD_LIBRARY
+        debug boost_system-mt-d
         optimized boost_thread-mt
-        debug boost_thread-mt-d)
-    set(BOOST_WAVE_LIBRARY
+        debug boost_thread-mt-d
         optimized boost_wave-mt
-        debug boost_wave-mt-d)
-  endif (WINDOWS)
-endif (USESYSTEMLIBS)
-
-if (LINUX)
-    set(BOOST_SYSTEM_LIBRARY ${BOOST_SYSTEM_LIBRARY} rt)
-    set(BOOST_THREAD_LIBRARY ${BOOST_THREAD_LIBRARY} rt)
-endif (LINUX)
+        debug boost_wave-mt-d
+	)
+endif (WINDOWS)
 
diff --git a/indra/cmake/BuildPackagesInfo.cmake b/indra/cmake/BuildPackagesInfo.cmake
index 8b3fc9576d843d8e74e4af76b49c54451dd24385..c7cde50e362283521af7423d145a7a9ac1fa847c 100644
--- a/indra/cmake/BuildPackagesInfo.cmake
+++ b/indra/cmake/BuildPackagesInfo.cmake
@@ -15,5 +15,5 @@ add_custom_command(OUTPUT packages-info.txt
   COMMAND ${Python3_EXECUTABLE}
           ${CMAKE_SOURCE_DIR}/cmake/run_build_test.py -DAUTOBUILD_ADDRSIZE=${ADDRESS_SIZE} -DAUTOBUILD=${AUTOBUILD_EXECUTABLE}
           ${Python3_EXECUTABLE}
-          ${CMAKE_SOURCE_DIR}/../scripts/packages-formatter.py "${VIEWER_CHANNEL}" "${VIEWER_SHORT_VERSION}" > packages-info.txt
+          ${CMAKE_SOURCE_DIR}/../scripts/packages-formatter.py "${VIEWER_CHANNEL}" "${VIEWER_SHORT_VERSION}" "${AUTOBUILD_INSTALL_DIR}" > packages-info.txt
   )
diff --git a/indra/cmake/CEFPlugin.cmake b/indra/cmake/CEFPlugin.cmake
index 91ddbe9c4197f3a59d6a4ced4d6d66cad5e13fa8..7b75db06064732fe32dc26edbc06948f6f9aa25a 100644
--- a/indra/cmake/CEFPlugin.cmake
+++ b/indra/cmake/CEFPlugin.cmake
@@ -2,18 +2,14 @@
 include(Linking)
 include(Prebuilt)
 
-if (USESYSTEMLIBS)
-    set(CEFPLUGIN OFF CACHE BOOL
-        "CEFPLUGIN support for the llplugin/llmedia test apps.")
-else (USESYSTEMLIBS)
-    use_prebuilt_binary(dullahan)
-    set(CEFPLUGIN ON CACHE BOOL
-        "CEFPLUGIN support for the llplugin/llmedia test apps.")
-        set(CEF_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/cef)
-endif (USESYSTEMLIBS)
+include_guard()
+add_library( ll::cef INTERFACE IMPORTED )
+
+use_prebuilt_binary(dullahan)
+target_include_directories( ll::cef SYSTEM INTERFACE  ${LIBS_PREBUILT_DIR}/include/cef)
 
 if (WINDOWS)
-    set(CEF_PLUGIN_LIBRARIES
+    target_link_libraries( ll::cef INTERFACE
         ${ARCH_PREBUILT_DIRS_RELEASE}/libcef.lib
         ${ARCH_PREBUILT_DIRS_RELEASE}/libcef_dll_wrapper.lib
         ${ARCH_PREBUILT_DIRS_RELEASE}/dullahan.lib
@@ -24,14 +20,14 @@ elseif (DARWIN)
         message(FATAL_ERROR "AppKit not found")
     endif()
 
-    set(CEF_PLUGIN_LIBRARIES
+    target_link_libraries( ll::cef INTERFACE
         ${ARCH_PREBUILT_DIRS_RELEASE}/libcef_dll_wrapper.a
         ${ARCH_PREBUILT_DIRS_RELEASE}/libdullahan.a
         ${APPKIT_LIBRARY}
        )
 
 elseif (LINUX)
-    set(CEF_PLUGIN_LIBRARIES
+    target_link_libraries( ll::cef INTERFACE
         dullahan
         cef
         cef_dll_wrapper.a
diff --git a/indra/cmake/CMakeLists.txt b/indra/cmake/CMakeLists.txt
index babfa6741d947067a7ec1747faedb0d112c9ff21..59577d7ded2633d974d820c0be9389bc405243e6 100644
--- a/indra/cmake/CMakeLists.txt
+++ b/indra/cmake/CMakeLists.txt
@@ -5,104 +5,78 @@ include(00-Common)
 project(cmake)
 
 set(cmake_SOURCE_FILES
-    CMakeLists.txt
-
-    00-Common.cmake
-    APR.cmake
-    Audio.cmake
-    Boost.cmake
-    BuildPackagesInfo.cmake
-    BuildVersion.cmake
-    CEFPlugin.cmake
-    CMakeCopyIfDifferent.cmake
-    CURL.cmake
-    Copy3rdPartyLibs.cmake
-    DBusGlib.cmake
-    DeploySharedLibs.cmake
-    DiscordSDK.cmake
-    DragDrop.cmake
-    EXPAT.cmake
-    FindAPR.cmake
-    FindAutobuild.cmake
-    FindFMODSTUDIO.cmake
-    FindHUNSPELL.cmake
-    FindNDOF.cmake
-    FindOpenJPEG.cmake
-    FindURIPARSER.cmake
-    FindXmlRpcEpi.cmake
-    FindZLIBNG.cmake
-    FMODSTUDIO.cmake
-    FreeType.cmake
-    GLEXT.cmake
-    GStreamer010Plugin.cmake
-    Hunspell.cmake
-    JPEG.cmake
-    LibXML2.cmake
-    LLAddBuildTest.cmake
-    LLAppearance.cmake
-    LLAudio.cmake
-    LLCharacter.cmake
-    LLCommon.cmake
-    LLImage.cmake
-    LLImageJ2COJ.cmake
-    LLInventory.cmake
-    LLKDU.cmake
-    LLLogin.cmake
-    LLMath.cmake
-    LLMeshOptimizer.cmake
-    LLMessage.cmake
-    LLPhysicsExtensions.cmake
-    LLPlugin.cmake
-    LLPrimitive.cmake
-    LLRender.cmake
-    LLSharedLibs.cmake
-    LLTestCommand.cmake
-    LLUI.cmake
-    LLFileSystem.cmake
-    LLWindow.cmake
-    LLXML.cmake
-    Linking.cmake
-    MediaPluginBase.cmake
-    MESHOPTIMIZER.cmake
-    NDOF.cmake
-    OPENAL.cmake
-    OpenGL.cmake
-    OpenJPEG.cmake
-    OpenSSL.cmake
-    PNG.cmake
-    PluginAPI.cmake
-    Prebuilt.cmake
-    PulseAudio.cmake
-    SDL2.cmake
-    Sentry.cmake
-    TemplateCheck.cmake
-    Tut.cmake
-    UI.cmake
-    UnixInstall.cmake
-    URIPARSER.cmake
-    WebP.cmake
-    Variables.cmake
-    ViewerMiscLibs.cmake
-    VisualLeakDetector.cmake
-    LibVLCPlugin.cmake
-    XmlRpcEpi.cmake
-    XXHash.cmake
-    ZLIBNG.cmake
-    )
+        CMakeLists.txt
+        00-Common.cmake
+        APR.cmake
+        Audio.cmake
+        Boost.cmake
+        BuildPackagesInfo.cmake
+        BuildVersion.cmake
+        CEFPlugin.cmake
+        CMakeCopyIfDifferent.cmake
+        CURL.cmake
+        Copy3rdPartyLibs.cmake
+        DBusGlib.cmake
+        DeploySharedLibs.cmake
+        DiscordSDK.cmake
+        DragDrop.cmake
+        EXPAT.cmake
+        FindAutobuild.cmake
+        FMODSTUDIO.cmake
+        FreeType.cmake
+        GLEXT.cmake
+        Hunspell.cmake
+        LibXML2.cmake
+        LLAddBuildTest.cmake
+        LLAppearance.cmake
+        LLAudio.cmake
+        LLCommon.cmake
+        LLImage.cmake
+        LLKDU.cmake
+        LLPhysicsExtensions.cmake
+        LLPrimitive.cmake
+        LLSharedLibs.cmake
+        LLTestCommand.cmake
+        LLWindow.cmake
+        Linking.cmake
+        Meshoptimizer.cmake
+        NDOF.cmake
+        OPENAL.cmake
+        OpenGL.cmake
+        OpenJPEG.cmake
+        OpenSSL.cmake
+        PNG.cmake
+        PluginAPI.cmake
+        Prebuilt.cmake
+        PulseAudio.cmake
+	Python.cmake
+        SDL2.cmake
+        Sentry.cmake
+        TemplateCheck.cmake
+        Tut.cmake
+        UI.cmake
+        UnixInstall.cmake
+        URIPARSER.cmake
+        WebP.cmake
+        Variables.cmake
+        ViewerMiscLibs.cmake
+        VisualLeakDetector.cmake
+        LibVLCPlugin.cmake
+        XmlRpcEpi.cmake
+        XXHash.cmake
+        ZLIBNG.cmake
+        )
 
 source_group("Shared Rules" FILES ${cmake_SOURCE_FILES})
 
 set(master_SOURCE_FILES
-    ../CMakeLists.txt
-    )
+        ../CMakeLists.txt
+        )
 
 source_group("Master Rules" FILES ${master_SOURCE_FILES})
 
-set_source_files_properties(${cmake_SOURCE_FILES} ${master_SOURCE_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 add_library(cmake
-            cmake_dummy.cpp
-            ${cmake_SOURCE_FILES}
-            ${master_SOURCE_FILES}
-            )
+        cmake_dummy.cpp
+        ${cmake_SOURCE_FILES}
+        ${master_SOURCE_FILES}
+        )
diff --git a/indra/cmake/CURL.cmake b/indra/cmake/CURL.cmake
index 4b0f61e3e9950178584068c8a896e615e5d73115..7d447f56f35882c1122506afb27fae5dd972f579 100644
--- a/indra/cmake/CURL.cmake
+++ b/indra/cmake/CURL.cmake
@@ -2,31 +2,28 @@
 include(Prebuilt)
 include(Linking)
 
-set(CURL_FIND_QUIETLY ON)
-set(CURL_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::libcurl INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindCURL)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(curl)
-  if (WINDOWS)
-    set(CURL_LIBRARIES 
+use_system_binary(libcurl)
+use_prebuilt_binary(curl)
+if (WINDOWS)
+    target_link_libraries(ll::libcurl INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcurld.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcurl.lib
       Normaliz.lib
       Iphlpapi.lib
     )
-  elseif(DARWIN)
-    set(CURL_LIBRARIES 
+elseif(DARWIN)
+    target_link_libraries(ll::libcurl INTERFACE 
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcurld.a
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcurl.a
       resolv
     )
-  else ()
-    set(CURL_LIBRARIES
+else ()
+    target_link_libraries(ll::libcurl INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcurld.a
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcurl.a
       )
-  endif ()
-  set(CURL_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-endif (USESYSTEMLIBS)
+endif ()
+target_include_directories( ll::libcurl SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
diff --git a/indra/cmake/Copy3rdPartyLibs.cmake b/indra/cmake/Copy3rdPartyLibs.cmake
index ea216de9127ad93c9ffa4c4a3078f2923cbc89cc..067b9adf67dd0a63db4903601c7feace5daeac31 100644
--- a/indra/cmake/Copy3rdPartyLibs.cmake
+++ b/indra/cmake/Copy3rdPartyLibs.cmake
@@ -6,7 +6,6 @@
 
 include(CMakeCopyIfDifferent)
 include(Linking)
-include(DiscordSDK)
 include(FMODSTUDIO)
 include(Sentry)
 
@@ -17,8 +16,7 @@ include(Sentry)
 # Pass FROM_DIR, TARGETS and the files to copy. TO_DIR is implicit.
 # to_staging_dirs diverges from copy_if_different in that it appends to TARGETS.
 MACRO(to_debug_staging_dirs from_dir targets)
-  foreach(staging_dir
-          "${SHARED_LIB_STAGING_DIR_DEBUG}")
+          "${SHARED_LIB_STAGING_DIR_RELEASE}"
     copy_if_different("${from_dir}" "${staging_dir}" out_targets ${ARGN})
     list(APPEND "${targets}" "${out_targets}")
   endforeach()
@@ -26,10 +24,10 @@ ENDMACRO(to_debug_staging_dirs from_dir to_dir targets)
 
 MACRO(to_relwithdeb_staging_dirs from_dir targets)
   foreach(staging_dir
-          "${SHARED_LIB_STAGING_DIR_RELWITHDEBINFO}")
-    copy_if_different("${from_dir}" "${staging_dir}" out_targets ${ARGN})
+    copy_if_different("${from_dir}" "${targetDir}" out_targets ${ARGN})
+
     list(APPEND "${targets}" "${out_targets}")
-  endforeach()
+endmacro()
 ENDMACRO(to_relwithdeb_staging_dirs from_dir to_dir targets)
 
 MACRO(to_release_staging_dirs from_dir targets)
@@ -38,28 +36,23 @@ MACRO(to_release_staging_dirs from_dir targets)
     copy_if_different("${from_dir}" "${staging_dir}" out_targets ${ARGN})
     list(APPEND "${targets}" "${out_targets}")
   endforeach()
-ENDMACRO(to_release_staging_dirs from_dir to_dir targets)
+ENDMACRO(to_staging_dirs from_dir to_dir targets)
 
 ###################################################################
 # set up platform specific lists of files that need to be copied
 ###################################################################
 if(WINDOWS)
-    if(GEN_IS_MULTI_CONFIG)
-        set(SHARED_LIB_STAGING_DIR_DEBUG            "${SHARED_LIB_STAGING_DIR}/Debug")
-        set(SHARED_LIB_STAGING_DIR_RELWITHDEBINFO   "${SHARED_LIB_STAGING_DIR}/RelWithDebInfo")
-        set(SHARED_LIB_STAGING_DIR_RELEASE          "${SHARED_LIB_STAGING_DIR}/Release")
-    elseif (UPPERCASE_CMAKE_BUILD_TYPE MATCHES DEBUG)
-        set(SHARED_LIB_STAGING_DIR_DEBUG            "${SHARED_LIB_STAGING_DIR}")
-    elseif (UPPERCASE_CMAKE_BUILD_TYPE MATCHES RELWITHDEBINFO)
-        set(SHARED_LIB_STAGING_DIR_RELWITHDEBINFO   "${SHARED_LIB_STAGING_DIR}")
-    elseif (UPPERCASE_CMAKE_BUILD_TYPE MATCHES RELEASE)
-        set(SHARED_LIB_STAGING_DIR_RELEASE          "${SHARED_LIB_STAGING_DIR}")
-    endif()
-
+z
     #*******************************
     # VIVOX - *NOTE: no debug version
     set(vivox_lib_dir "${ARCH_PREBUILT_DIRS_RELEASE}")
-    set(slvoice_src_dir "${ARCH_PREBUILT_BIN_DIRS_RELEASE}")    
+
+    # ND, it seems there is no such thing defined. At least when building a viewer
+    # Does this maybe matter on some LL buildserver? Otherwise this and the snippet using slvoice_src_dir
+    # can all go
+    if( ARCH_PREBUILT_BIN_RELEASE )
+        set(slvoice_src_dir "${ARCH_PREBUILT_BIN_DIRS_RELEASE}")    
+    endif()
     set(slvoice_files SLVoice.exe )
     if (ADDRESS_SIZE EQUAL 64)
         list(APPEND vivox_libs
@@ -94,12 +87,12 @@ if(WINDOWS)
       list(APPEND release_files sentry.dll)
     endif ()
 
-    if (USE_FMODSTUDIO)
+    if (TARGET ll::fmodstudio)
       list(APPEND debug_files fmodL.dll)
       list(APPEND release_files fmod.dll)
-    endif (USE_FMODSTUDIO)
+    endif ()
 
-    if (USE_OPENAL)
+    if (TARGET ll::openal)
       list(APPEND debug_files OpenAL32.dll alut.dll)
       list(APPEND release_files OpenAL32.dll alut.dll)
     endif ()
@@ -108,10 +101,6 @@ if(WINDOWS)
       list(APPEND release_files discord_game_sdk.dll)
     endif()
 elseif(DARWIN)
-    set(SHARED_LIB_STAGING_DIR_DEBUG            "${SHARED_LIB_STAGING_DIR}/Debug/Resources")
-    set(SHARED_LIB_STAGING_DIR_RELWITHDEBINFO   "${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/Resources")
-    set(SHARED_LIB_STAGING_DIR_RELEASE          "${SHARED_LIB_STAGING_DIR}/Release/Resources")
-
     set(vivox_lib_dir "${ARCH_PREBUILT_DIRS_RELEASE}")
     set(slvoice_files SLVoice)
     set(vivox_libs
@@ -126,10 +115,10 @@ elseif(DARWIN)
         libndofdev.dylib
        )
 
-    if (USE_FMODSTUDIO)
+    if (TARGET ll::fmodstudio)
       list(APPEND debug_files libfmodL.dylib)
       list(APPEND release_files libfmod.dylib)
-    endif (USE_FMODSTUDIO)
+    endif ()
 
     if(USE_DISCORD)
       list(APPEND release_files discord_game_sdk.dylib)
@@ -161,16 +150,21 @@ elseif(LINUX)
     set(release_src_dir "${ARCH_PREBUILT_DIRS_RELEASE}")
     # *FIX - figure out what to do with duplicate libalut.so here -brad
     set(release_files
-        libopenal.so
-        libjpeg.so
-        libjpeg.so.8
-        libjpeg.so.8.2.2
-       )
+            ${EXPAT_COPY}
+            )
+
+     if( USE_AUTOBUILD_3P )
+         list( APPEND release_files
+                 libjpeg.so
+                 libjpeg.so.8
+                 libjpeg.so.8.2.2
+                 )
+     endif()
 
-    if (USE_FMODSTUDIO)
+    if (TARGET ll::fmodstudio)
       list(APPEND debug_files libfmodL.so)
       list(APPEND release_files libfmod.so)
-    endif (USE_FMODSTUDIO)
+    endif ()
 
     if(USE_DISCORD)
       list(APPEND release_files libdiscord_game_sdk.so)
diff --git a/indra/cmake/DBusGlib.cmake b/indra/cmake/DBusGlib.cmake
index 5e46b6711a1363856fa425684dcec40865a9aa7c..c9b727ca9df7acec98b7dd28b3e5c43855df7a25 100644
--- a/indra/cmake/DBusGlib.cmake
+++ b/indra/cmake/DBusGlib.cmake
@@ -1,29 +1,14 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-if (USESYSTEMLIBS)
-  include(FindPkgConfig)
+add_library( ll::dbus INTERFACE IMPORTED)
 
-  pkg_check_modules(DBUSGLIB REQUIRED dbus-glib-1)
+if( LINUX )
+  # Only define this when not using the prebuild 3ps, lls prebuild is broken
+  if( NOT USE_AUTOBUILD_3P )
+    target_compile_definitions( ll::dbus INTERFACE LL_DBUS_ENABLED )
+  endif()
+  use_system_binary(dbus)
 
-elseif (LINUX)
   use_prebuilt_binary(dbus_glib)
-  set(DBUSGLIB_FOUND ON FORCE BOOL)
-  set(DBUSGLIB_INCLUDE_DIRS
-      ${LIBS_PREBUILT_DIR}/include/dbus
-      )
-  # We don't need to explicitly link against dbus-glib itself, because
-  # the viewer probes for the system's copy at runtime.
-  set(DBUSGLIB_LIBRARIES
-      gobject-2.0
-      glib-2.0
-      )
-endif (USESYSTEMLIBS)
-
-if (DBUSGLIB_FOUND)
-  set(DBUSGLIB ON CACHE BOOL "Build with dbus-glib message bus support.")
-endif (DBUSGLIB_FOUND)
-
-if (DBUSGLIB)
-  add_definitions(-DLL_DBUS_ENABLED=1)
-endif (DBUSGLIB)
+endif()
diff --git a/indra/cmake/DragDrop.cmake b/indra/cmake/DragDrop.cmake
index 73ef59b18fc35724c94e0b8d4a5ade89e63aa246..26e7828830d75c6d4321de07767de2b92db2450e 100644
--- a/indra/cmake/DragDrop.cmake
+++ b/indra/cmake/DragDrop.cmake
@@ -1,20 +1,16 @@
 # -*- cmake -*-
 
-  set(OS_DRAG_DROP ON CACHE BOOL "Build the viewer with OS level drag and drop turned on or off")
-
-  if (OS_DRAG_DROP)
+set(OS_DRAG_DROP ON CACHE BOOL "Build the viewer with OS level drag and drop turned on or off")
 
+if (OS_DRAG_DROP)
     if (WINDOWS)
-      add_definitions(-DLL_OS_DRAGDROP_ENABLED=1)
+        add_definitions(-DLL_OS_DRAGDROP_ENABLED=1)
     endif (WINDOWS)
-
     if (DARWIN)
-      add_definitions(-DLL_OS_DRAGDROP_ENABLED=1)
+        add_definitions(-DLL_OS_DRAGDROP_ENABLED=1)
     endif (DARWIN)
-
     if (LINUX)
-      add_definitions(-DLL_OS_DRAGDROP_ENABLED=0)
+        add_definitions(-DLL_OS_DRAGDROP_ENABLED=1)
     endif (LINUX)
-
-  endif (OS_DRAG_DROP)
+endif (OS_DRAG_DROP)
 
diff --git a/indra/cmake/EXPAT.cmake b/indra/cmake/EXPAT.cmake
index 586fd09f2aa0e2dde76599ccb1bc70cf268cf50b..56e5474b1a241b7663ca7a2a40afeeb7afbb7b07 100644
--- a/indra/cmake/EXPAT.cmake
+++ b/indra/cmake/EXPAT.cmake
@@ -1,21 +1,18 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-set(EXPAT_FIND_QUIETLY ON)
-set(EXPAT_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::expat INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindEXPAT)
-else (USESYSTEMLIBS)
-    use_prebuilt_binary(expat)
-    if (WINDOWS)
-        set(EXPAT_LIBRARIES
+use_system_binary(expat)
+use_prebuilt_binary(expat)
+if (WINDOWS)
+    target_link_libraries( ll::expat  INTERFACE
             debug ${ARCH_PREBUILT_DIRS_DEBUG}/libexpatd.lib
             optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libexpat.lib)
-    else ()
-        set(EXPAT_LIBRARIES
+else ()
+    target_link_libraries( ll::expat  INTERFACE
             debug ${ARCH_PREBUILT_DIRS_DEBUG}/libexpat.a
             optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libexpat.a)
-    endif ()
-    set(EXPAT_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-endif (USESYSTEMLIBS)
+endif ()
+target_include_directories( ll::expat SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include )
diff --git a/indra/cmake/ExamplePlugin.cmake b/indra/cmake/ExamplePlugin.cmake
index 5d826c1f66f5eb8c4b5cf57a93463b8fb456b90d..62340354749812d51c7d5e143cc93c8de4d540b2 100644
--- a/indra/cmake/ExamplePlugin.cmake
+++ b/indra/cmake/ExamplePlugin.cmake
@@ -2,15 +2,5 @@
 include(Linking)
 include(Prebuilt)
 
-if (USESYSTEMLIBS)
-    set(EXAMPLEPLUGIN OFF CACHE BOOL
+set(EXAMPLEPLUGIN ON CACHE BOOL
         "EXAMPLEPLUGIN support for the llplugin/llmedia test apps.")
-else (USESYSTEMLIBS)
-    set(EXAMPLEPLUGIN ON CACHE BOOL
-        "EXAMPLEPLUGIN support for the llplugin/llmedia test apps.")
-endif (USESYSTEMLIBS)
-
-if (WINDOWS)
-elseif (DARWIN)
-elseif (LINUX)
-endif (WINDOWS)
diff --git a/indra/cmake/FMODSTUDIO.cmake b/indra/cmake/FMODSTUDIO.cmake
index ac4a59f86a497f0ac4b845539616ba4662b2c88b..4848017d3b141481bfb5173642468d43e3ee8c76 100644
--- a/indra/cmake/FMODSTUDIO.cmake
+++ b/indra/cmake/FMODSTUDIO.cmake
@@ -1,48 +1,50 @@
 # -*- cmake -*-
-include(Linking)
-include(Prebuilt)
 
-# FMOD can be set when launching the make using the argument -DUSE_FMODSTUDIO:BOOL=ON
+include_guard()
+
+# FMODSTUDIO can be set when launching the make using the argument -DFMODSTUDIO:BOOL=ON
 # When building using proprietary binaries though (i.e. having access to LL private servers),
 # we always build with FMODSTUDIO.
-# Open source devs should use the -DFMODSTUDIO:BOOL=ON then if they want to build with FMOD, whether
-# they are using STANDALONE or not.
 if (INSTALL_PROPRIETARY)
-  set(USE_FMODSTUDIO ON CACHE BOOL "Use FMOD Studio audio subsystem" FORCE)
+  set(USE_FMODSTUDIO ON CACHE BOOL "Using FMODSTUDIO sound library.")
 endif (INSTALL_PROPRIETARY)
 
+# ND: To streamline arguments passed, switch from FMODSTUDIO to USE_FMODSTUDIO
+# To not break all old build scripts convert old arguments but warn about it
+if(FMODSTUDIO)
+  message( WARNING "Use of the FMODSTUDIO argument is deprecated, please switch to USE_FMODSTUDIO")
+  set(USE_FMODSTUDIO ${FMODSTUDIO})
+endif()
+
 if (USE_FMODSTUDIO)
-  if (STANDALONE)
-    # In that case, we use the version of the library installed on the system
-    set(FMODSTUDIO_FIND_REQUIRED ON)
-    include(FindFMODSTUDIO)
-  else (STANDALONE)
-    if (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-      # If the path have been specified in the arguments, use that
-      set(FMODSTUDIO_LIBRARIES ${FMODSTUDIO_LIBRARY})
-      MESSAGE(STATUS "Using FMODSTUDIO path: ${FMODSTUDIO_LIBRARIES}, ${FMODSTUDIO_INCLUDE_DIR}")
-    else (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-      # If not, we're going to try to get the package listed in autobuild.xml
-      # Note: if you're not using INSTALL_PROPRIETARY, the package URL should be local (file:/// URL) 
-      # as accessing the private LL location will fail if you don't have the credential
-      include(Prebuilt)
-      use_prebuilt_binary(fmodstudio)    
-      if (WINDOWS)
-        set(FMODSTUDIO_LIBRARY 
+  add_library( ll::fmodstudio INTERFACE IMPORTED )
+  target_compile_definitions( ll::fmodstudio INTERFACE LL_FMODSTUDIO=1)
+
+  if (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
+    # If the path have been specified in the arguments, use that
+
+    target_link_libraries(ll::fmodstudio INTERFACE ${FMODSTUDIO_LIBRARY})
+    target_include_directories( ll::fmodstudio SYSTEM INTERFACE  ${FMODSTUDIO_INCLUDE_DIR})
+  else (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
+    # If not, we're going to try to get the package listed in autobuild.xml
+    # Note: if you're not using INSTALL_PROPRIETARY, the package URL should be local (file:/// URL)
+    # as accessing the private LL location will fail if you don't have the credential
+    include(Prebuilt)
+    use_prebuilt_binary(fmodstudio)
+    if (WINDOWS)
+      target_link_libraries( ll::fmodstudio INTERFACE
             debug ${ARCH_PREBUILT_DIRS_DEBUG}/fmodL_vc.lib
             optimized ${ARCH_PREBUILT_DIRS_RELEASE}/fmod_vc.lib)
-      elseif (DARWIN)
-        set(FMODSTUDIO_LIBRARY 
-            debug fmodL
-            optimized fmod)
-      elseif (LINUX)
-        set(FMODSTUDIO_LIBRARY 
-            debug fmodL
-            optimized fmod)
-      endif (WINDOWS)
-      set(FMODSTUDIO_LIBRARIES ${FMODSTUDIO_LIBRARY})
-      set(FMODSTUDIO_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/fmodstudio)
-    endif (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-  endif (STANDALONE)
-endif (USE_FMODSTUDIO)
+    elseif (DARWIN)
+      #despite files being called libfmod.dylib, we are searching for fmod
+      target_link_libraries( ll::fmodstudio INTERFACE  fmod)
+    elseif (LINUX)
+      target_link_libraries( ll::fmodstudio INTERFACE  fmod)
+    endif (WINDOWS)
+
+    target_include_directories( ll::fmodstudio SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/fmodstudio)
+  endif (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
+else()
+  set( USE_FMODSTUDIO "OFF")
+endif ()
 
diff --git a/indra/cmake/FindAPR.cmake b/indra/cmake/FindAPR.cmake
deleted file mode 100644
index 906b6c945204ba3b3dc7d078673308c9bbecb83c..0000000000000000000000000000000000000000
--- a/indra/cmake/FindAPR.cmake
+++ /dev/null
@@ -1,94 +0,0 @@
-# -*- cmake -*-
-
-# - Find Apache Portable Runtime
-# Find the APR includes and libraries
-# This module defines
-#  APR_INCLUDE_DIR and APRUTIL_INCLUDE_DIR, where to find apr.h, etc.
-#  APR_LIBRARIES and APRUTIL_LIBRARIES, the libraries needed to use APR.
-#  APR_FOUND and APRUTIL_FOUND, If false, do not try to use APR.
-# also defined, but not for general use are
-#  APR_LIBRARY and APRUTIL_LIBRARY, where to find the APR library.
-
-# APR first.
-
-FIND_PATH(APR_INCLUDE_DIR apr.h
-/usr/local/include/apr-1
-/usr/local/include/apr-1.0
-/usr/include/apr-1
-/usr/include/apr-1.0
-)
-
-SET(APR_NAMES ${APR_NAMES} apr-1)
-FIND_LIBRARY(APR_LIBRARY
-  NAMES ${APR_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (APR_LIBRARY AND APR_INCLUDE_DIR)
-    SET(APR_LIBRARIES ${APR_LIBRARY})
-    SET(APR_FOUND "YES")
-ELSE (APR_LIBRARY AND APR_INCLUDE_DIR)
-  SET(APR_FOUND "NO")
-ENDIF (APR_LIBRARY AND APR_INCLUDE_DIR)
-
-
-IF (APR_FOUND)
-   IF (NOT APR_FIND_QUIETLY)
-      MESSAGE(STATUS "Found APR: ${APR_LIBRARIES}")
-   ENDIF (NOT APR_FIND_QUIETLY)
-ELSE (APR_FOUND)
-   IF (APR_FIND_REQUIRED)
-      MESSAGE(FATAL_ERROR "Could not find APR library")
-   ENDIF (APR_FIND_REQUIRED)
-ENDIF (APR_FOUND)
-
-# Deprecated declarations.
-SET (NATIVE_APR_INCLUDE_PATH ${APR_INCLUDE_DIR} )
-GET_FILENAME_COMPONENT (NATIVE_APR_LIB_PATH ${APR_LIBRARY} PATH)
-
-MARK_AS_ADVANCED(
-  APR_LIBRARY
-  APR_INCLUDE_DIR
-  )
-
-# Next, APRUTIL.
-
-FIND_PATH(APRUTIL_INCLUDE_DIR apu.h
-/usr/local/include/apr-1
-/usr/local/include/apr-1.0
-/usr/include/apr-1
-/usr/include/apr-1.0
-)
-
-SET(APRUTIL_NAMES ${APRUTIL_NAMES} aprutil-1)
-FIND_LIBRARY(APRUTIL_LIBRARY
-  NAMES ${APRUTIL_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (APRUTIL_LIBRARY AND APRUTIL_INCLUDE_DIR)
-    SET(APRUTIL_LIBRARIES ${APRUTIL_LIBRARY})
-    SET(APRUTIL_FOUND "YES")
-ELSE (APRUTIL_LIBRARY AND APRUTIL_INCLUDE_DIR)
-  SET(APRUTIL_FOUND "NO")
-ENDIF (APRUTIL_LIBRARY AND APRUTIL_INCLUDE_DIR)
-
-
-IF (APRUTIL_FOUND)
-   IF (NOT APRUTIL_FIND_QUIETLY)
-      MESSAGE(STATUS "Found APRUTIL: ${APRUTIL_LIBRARIES}")
-   ENDIF (NOT APRUTIL_FIND_QUIETLY)
-ELSE (APRUTIL_FOUND)
-   IF (APRUTIL_FIND_REQUIRED)
-      MESSAGE(FATAL_ERROR "Could not find APRUTIL library")
-   ENDIF (APRUTIL_FIND_REQUIRED)
-ENDIF (APRUTIL_FOUND)
-
-# Deprecated declarations.
-SET (NATIVE_APRUTIL_INCLUDE_PATH ${APRUTIL_INCLUDE_DIR} )
-GET_FILENAME_COMPONENT (NATIVE_APRUTIL_LIB_PATH ${APRUTIL_LIBRARY} PATH)
-
-MARK_AS_ADVANCED(
-  APRUTIL_LIBRARY
-  APRUTIL_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindGooglePerfTools.cmake b/indra/cmake/FindGooglePerfTools.cmake
deleted file mode 100644
index bb125d538e04a7a5e45cac165ed407efb7fcf081..0000000000000000000000000000000000000000
--- a/indra/cmake/FindGooglePerfTools.cmake
+++ /dev/null
@@ -1,66 +0,0 @@
-# -*- cmake -*-
-
-# - Find Google perftools
-# Find the Google perftools includes and libraries
-# This module defines
-#  GOOGLE_PERFTOOLS_INCLUDE_DIR, where to find heap-profiler.h, etc.
-#  GOOGLE_PERFTOOLS_FOUND, If false, do not try to use Google perftools.
-# also defined for general use are
-#  TCMALLOC_LIBRARIES, where to find the tcmalloc library.
-#  STACKTRACE_LIBRARIES, where to find the stacktrace library.
-#  PROFILER_LIBRARIES, where to find the profiler library.
-
-FIND_PATH(GOOGLE_PERFTOOLS_INCLUDE_DIR google/heap-profiler.h
-/usr/local/include
-/usr/include
-)
-
-SET(TCMALLOC_NAMES ${TCMALLOC_NAMES} tcmalloc)
-FIND_LIBRARY(TCMALLOC_LIBRARY
-  NAMES ${TCMALLOC_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (TCMALLOC_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-    SET(TCMALLOC_LIBRARIES ${TCMALLOC_LIBRARY})
-    SET(GOOGLE_PERFTOOLS_FOUND "YES")
-ELSE (TCMALLOC_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-  SET(GOOGLE_PERFTOOLS_FOUND "NO")
-ENDIF (TCMALLOC_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-
-SET(STACKTRACE_NAMES ${STACKTRACE_NAMES} stacktrace)
-FIND_LIBRARY(STACKTRACE_LIBRARY
-  NAMES ${STACKTRACE_LIBRARY}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (STACKTRACE_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-    SET(STACKTRACE_LIBRARIES ${STACKTRACE_LIBRARY})
-ENDIF (STACKTRACE_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-
-SET(PROFILER_NAMES ${PROFILER_NAMES} profiler)
-FIND_LIBRARY(PROFILER_LIBRARY
-  NAMES ${PROFILER_LIBRARY}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (PROFILER_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-    SET(PROFILER_LIBRARIES ${PROFILER_LIBRARY})
-ENDIF (PROFILER_LIBRARY AND GOOGLE_PERFTOOLS_INCLUDE_DIR)
-
-IF (GOOGLE_PERFTOOLS_FOUND)
-   IF (NOT GOOGLE_PERFTOOLS_FIND_QUIETLY)
-      MESSAGE(STATUS "Found Google perftools: ${GOOGLE_PERFTOOLS_LIBRARIES}")
-   ENDIF (NOT GOOGLE_PERFTOOLS_FIND_QUIETLY)
-ELSE (GOOGLE_PERFTOOLS_FOUND)
-   IF (GOOGLE_PERFTOOLS_FIND_REQUIRED)
-      MESSAGE(FATAL_ERROR "Could not find Google perftools library")
-   ENDIF (GOOGLE_PERFTOOLS_FIND_REQUIRED)
-ENDIF (GOOGLE_PERFTOOLS_FOUND)
-
-MARK_AS_ADVANCED(
-  TCMALLOC_LIBRARY
-  STACKTRACE_LIBRARY
-  PROFILER_LIBRARY
-  GOOGLE_PERFTOOLS_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindHUNSPELL.cmake b/indra/cmake/FindHUNSPELL.cmake
deleted file mode 100644
index d411bdb9e5eba98c57ecca9f96c0cefc7f11a7f1..0000000000000000000000000000000000000000
--- a/indra/cmake/FindHUNSPELL.cmake
+++ /dev/null
@@ -1,38 +0,0 @@
-# -*- cmake -*-
-
-# - Find HUNSPELL
-# This module defines
-#  HUNSPELL_INCLUDE_DIR, where to find libhunspell.h, etc.
-#  HUNSPELL_LIBRARY, the library needed to use HUNSPELL.
-#  HUNSPELL_FOUND, If false, do not try to use HUNSPELL.
-
-find_path(HUNSPELL_INCLUDE_DIR hunspell.h
-  PATH_SUFFIXES hunspell
-  )
-
-set(HUNSPELL_NAMES ${HUNSPELL_NAMES} libhunspell-1.3 libhunspell)
-find_library(HUNSPELL_LIBRARY
-  NAMES ${HUNSPELL_NAMES}
-  )
-
-if (HUNSPELL_LIBRARY AND HUNSPELL_INCLUDE_DIR)
-  set(HUNSPELL_FOUND "YES")
-else (HUNSPELL_LIBRARY AND HUNSPELL_INCLUDE_DIR)
-  set(HUNSPELL_FOUND "NO")
-endif (HUNSPELL_LIBRARY AND HUNSPELL_INCLUDE_DIR)
-
-
-if (HUNSPELL_FOUND)
-  if (NOT HUNSPELL_FIND_QUIETLY)
-    message(STATUS "Found Hunspell: Library in '${HUNSPELL_LIBRARY}' and header in '${HUNSPELL_INCLUDE_DIR}' ")
-  endif (NOT HUNSPELL_FIND_QUIETLY)
-else (HUNSPELL_FOUND)
-  if (HUNSPELL_FIND_REQUIRED)
-    message(FATAL_ERROR " * * *\nCould not find HUNSPELL library! * * *")
-  endif (HUNSPELL_FIND_REQUIRED)
-endif (HUNSPELL_FOUND)
-
-mark_as_advanced(
-  HUNSPELL_LIBRARY
-  HUNSPELL_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindNDOF.cmake b/indra/cmake/FindNDOF.cmake
deleted file mode 100644
index 6dcf590a53d5f77cb6614752d8f78f0ef0336f30..0000000000000000000000000000000000000000
--- a/indra/cmake/FindNDOF.cmake
+++ /dev/null
@@ -1,39 +0,0 @@
-# -*- cmake -*-
-
-# - Find NDOF
-# Find the NDOF includes and library
-# This module defines
-#  NDOF_INCLUDE_DIR, where to find ndofdev_external.h, etc.
-#  NDOF_LIBRARY, the library needed to use NDOF.
-#  NDOF_FOUND, If false, do not try to use NDOF.
-
-find_path(NDOF_INCLUDE_DIR ndofdev_external.h
-  PATH_SUFFIXES ndofdev
-  )
-
-set(NDOF_NAMES ${NDOF_NAMES} ndofdev libndofdev)
-find_library(NDOF_LIBRARY
-  NAMES ${NDOF_NAMES}
-  )
-
-if (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
-  set(NDOF_FOUND "YES")
-else (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
-  set(NDOF_FOUND "NO")
-endif (NDOF_LIBRARY AND NDOF_INCLUDE_DIR)
-
-
-if (NDOF_FOUND)
-  if (NOT NDOF_FIND_QUIETLY)
-    message(STATUS "Found NDOF: Library in '${NDOF_LIBRARY}' and header in '${NDOF_INCLUDE_DIR}' ")
-  endif (NOT NDOF_FIND_QUIETLY)
-else (NDOF_FOUND)
-  if (NDOF_FIND_REQUIRED)
-    message(FATAL_ERROR " * * *\nCould not find NDOF library!\nIf you don't need Space Navigator Joystick support you can skip this test by configuring with -DNDOF:BOOL=OFF\n * * *")
-  endif (NDOF_FIND_REQUIRED)
-endif (NDOF_FOUND)
-
-mark_as_advanced(
-  NDOF_LIBRARY
-  NDOF_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindOpenJPEG.cmake b/indra/cmake/FindOpenJPEG.cmake
deleted file mode 100644
index 2d4353b54f991881e9620da269c8a86aee1433d5..0000000000000000000000000000000000000000
--- a/indra/cmake/FindOpenJPEG.cmake
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- cmake -*-
-
-# - Find OpenJPEG
-# Find the OpenJPEG includes and library
-# This module defines
-#  OPENJPEG_INCLUDE_DIR, where to find openjpeg.h, etc.
-#  OPENJPEG_LIBRARIES, the libraries needed to use OpenJPEG.
-#  OPENJPEG_FOUND, If false, do not try to use OpenJPEG.
-# also defined, but not for general use are
-#  OPENJPEG_LIBRARY, where to find the OpenJPEG library.
-
-FIND_PATH(OPENJPEG_INCLUDE_DIR openjpeg.h
-/usr/local/include/openjpeg
-/usr/local/include
-/usr/include/openjpeg
-/usr/include
-include/openjpeg
-)
-
-SET(OPENJPEG_NAMES ${OPENJPEG_NAMES} openjp2)
-FIND_LIBRARY(OPENJPEG_LIBRARY
-  NAMES ${OPENJPEG_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (OPENJPEG_LIBRARY AND OPENJPEG_INCLUDE_DIR)
-    SET(OPENJPEG_LIBRARIES ${OPENJPEG_LIBRARY})
-    SET(OPENJPEG_FOUND "YES")
-ELSE (OPENJPEG_LIBRARY AND OPENJPEG_INCLUDE_DIR)
-  SET(OPENJPEG_FOUND "NO")
-ENDIF (OPENJPEG_LIBRARY AND OPENJPEG_INCLUDE_DIR)
-
-
-IF (OPENJPEG_FOUND)
-   IF (NOT OPENJPEG_FIND_QUIETLY)
-      MESSAGE(STATUS "Found OpenJPEG: ${OPENJPEG_LIBRARIES}")
-   ENDIF (NOT OPENJPEG_FIND_QUIETLY)
-ELSE (OPENJPEG_FOUND)
-   IF (OPENJPEG_FIND_REQUIRED)
-      MESSAGE(FATAL_ERROR "Could not find OpenJPEG library")
-   ENDIF (OPENJPEG_FIND_REQUIRED)
-ENDIF (OPENJPEG_FOUND)
-
-# Deprecated declarations.
-SET (NATIVE_OPENJPEG_INCLUDE_PATH ${OPENJPEG_INCLUDE_DIR} )
-GET_FILENAME_COMPONENT (NATIVE_OPENJPEG_LIB_PATH ${OPENJPEG_LIBRARY} PATH)
-
-MARK_AS_ADVANCED(
-  OPENJPEG_LIBRARY
-  OPENJPEG_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindURIPARSER.cmake b/indra/cmake/FindURIPARSER.cmake
deleted file mode 100644
index 8ab9f0f4ed267302b6e7b71b08c3edb903ebd556..0000000000000000000000000000000000000000
--- a/indra/cmake/FindURIPARSER.cmake
+++ /dev/null
@@ -1,46 +0,0 @@
-# -*- cmake -*-
-
-# - Find uriparser
-# Find the URIPARSER includes and library
-# This module defines
-#  URIPARSER_INCLUDE_DIRS, where to find uriparser.h, etc.
-#  URIPARSER_LIBRARIES, the libraries needed to use uriparser.
-#  URIPARSER_FOUND, If false, do not try to use uriparser.
-#
-# This FindURIPARSER is about 43 times as fast the one provided with cmake (2.8.x),
-# because it doesn't look up the version of uriparser, resulting in a dramatic
-# speed up for configure (from 4 minutes 22 seconds to 6 seconds).
-#
-# Note: Since this file is only used for standalone, the windows
-# specific parts were left out.
-
-FIND_PATH(URIPARSER_INCLUDE_DIR uriparser/uri.h
-  NO_SYSTEM_ENVIRONMENT_PATH
-  )
-
-FIND_LIBRARY(URIPARSER_LIBRARY uriparser)
-
-if (URIPARSER_LIBRARY AND URIPARSER_INCLUDE_DIR)
-  SET(URIPARSER_INCLUDE_DIRS ${URIPARSER_INCLUDE_DIR})
-  SET(URIPARSER_LIBRARIES ${URIPARSER_LIBRARY})
-  SET(URIPARSER_FOUND "YES")
-else (URIPARSER_LIBRARY AND URIPARSER_INCLUDE_DIR)
-  SET(URIPARSER_FOUND "NO")
-endif (URIPARSER_LIBRARY AND URIPARSER_INCLUDE_DIR)
-
-if (URIPARSER_FOUND)
-  if (NOT URIPARSER_FIND_QUIETLY)
-    message(STATUS "Found URIPARSER: ${URIPARSER_LIBRARIES}")
-    SET(URIPARSER_FIND_QUIETLY TRUE)
-  endif (NOT URIPARSER_FIND_QUIETLY)
-else (URIPARSER_FOUND)
-  if (URIPARSER_FIND_REQUIRED)
-    message(FATAL_ERROR "Could not find URIPARSER library")
-  endif (URIPARSER_FIND_REQUIRED)
-endif (URIPARSER_FOUND)
-
-mark_as_advanced(
-  URIPARSER_LIBRARY
-  URIPARSER_INCLUDE_DIR
-  )
-
diff --git a/indra/cmake/FindXmlRpcEpi.cmake b/indra/cmake/FindXmlRpcEpi.cmake
deleted file mode 100644
index ba217e74676f636b16403c9cd82a93952159a13a..0000000000000000000000000000000000000000
--- a/indra/cmake/FindXmlRpcEpi.cmake
+++ /dev/null
@@ -1,48 +0,0 @@
-# -*- cmake -*-
-
-# - Find XMLRPC-EPI
-# Find the XMLRPC-EPI includes and library
-# This module defines
-#  XMLRPCEPI_INCLUDE_DIR, where to find jpeglib.h, etc.
-#  XMLRPCEPI_LIBRARIES, the libraries needed to use XMLRPC-EPI.
-#  XMLRPCEPI_FOUND, If false, do not try to use XMLRPC-EPI.
-# also defined, but not for general use are
-#  XMLRPCEPI_LIBRARY, where to find the XMLRPC-EPI library.
-
-FIND_PATH(XMLRPCEPI_INCLUDE_DIR xmlrpc-epi/xmlrpc.h
-/usr/local/include
-/usr/include
-)
-
-SET(XMLRPCEPI_NAMES ${XMLRPCEPI_NAMES} xmlrpc-epi)
-FIND_LIBRARY(XMLRPCEPI_LIBRARY
-  NAMES ${XMLRPCEPI_NAMES}
-  PATHS /usr/lib /usr/local/lib
-  )
-
-IF (XMLRPCEPI_LIBRARY AND XMLRPCEPI_INCLUDE_DIR)
-    SET(XMLRPCEPI_LIBRARIES ${XMLRPCEPI_LIBRARY})
-    SET(XMLRPCEPI_FOUND "YES")
-ELSE (XMLRPCEPI_LIBRARY AND XMLRPCEPI_INCLUDE_DIR)
-  SET(XMLRPCEPI_FOUND "NO")
-ENDIF (XMLRPCEPI_LIBRARY AND XMLRPCEPI_INCLUDE_DIR)
-
-
-IF (XMLRPCEPI_FOUND)
-   IF (NOT XMLRPCEPI_FIND_QUIETLY)
-      MESSAGE(STATUS "Found XMLRPC-EPI: ${XMLRPCEPI_LIBRARIES}")
-   ENDIF (NOT XMLRPCEPI_FIND_QUIETLY)
-ELSE (XMLRPCEPI_FOUND)
-   IF (XMLRPCEPI_FIND_REQUIRED)
-      MESSAGE(FATAL_ERROR "Could not find XMLRPC-EPI library")
-   ENDIF (XMLRPCEPI_FIND_REQUIRED)
-ENDIF (XMLRPCEPI_FOUND)
-
-# Deprecated declarations.
-SET (NATIVE_XMLRPCEPI_INCLUDE_PATH ${XMLRPCEPI_INCLUDE_DIR} )
-GET_FILENAME_COMPONENT (NATIVE_XMLRPCEPI_LIB_PATH ${XMLRPCEPI_LIBRARY} PATH)
-
-MARK_AS_ADVANCED(
-  XMLRPCEPI_LIBRARY
-  XMLRPCEPI_INCLUDE_DIR
-  )
diff --git a/indra/cmake/FindZLIBNG.cmake b/indra/cmake/FindZLIBNG.cmake
deleted file mode 100644
index 6e3c8cdddbfe283f10da559e345655f8dafe055e..0000000000000000000000000000000000000000
--- a/indra/cmake/FindZLIBNG.cmake
+++ /dev/null
@@ -1,46 +0,0 @@
-# -*- cmake -*-
-
-# - Find zlib-ng
-# Find the ZLIB includes and library
-# This module defines
-#  ZLIBNG_INCLUDE_DIRS, where to find zlib.h, etc.
-#  ZLIBNG_LIBRARIES, the libraries needed to use zlib.
-#  ZLIBNG_FOUND, If false, do not try to use zlib.
-#
-# This FindZLIBNG is about 43 times as fast the one provided with cmake (2.8.x),
-# because it doesn't look up the version of zlib, resulting in a dramatic
-# speed up for configure (from 4 minutes 22 seconds to 6 seconds).
-#
-# Note: Since this file is only used for standalone, the windows
-# specific parts were left out.
-
-FIND_PATH(ZLIBNG_INCLUDE_DIR zlib.h
-  NO_SYSTEM_ENVIRONMENT_PATH
-  )
-
-FIND_LIBRARY(ZLIBNG_LIBRARY z)
-
-if (ZLIBNG_LIBRARY AND ZLIBNG_INCLUDE_DIR)
-  SET(ZLIBNG_INCLUDE_DIRS ${ZLIBNG_INCLUDE_DIR})
-  SET(ZLIBNG_LIBRARIES ${ZLIBNG_LIBRARY})
-  SET(ZLIBNG_FOUND "YES")
-else (ZLIBNG_LIBRARY AND ZLIBNG_INCLUDE_DIR)
-  SET(ZLIBNG_FOUND "NO")
-endif (ZLINGB_LIBRARY AND ZLIBNG_INCLUDE_DIR)
-
-if (ZLIBNG_FOUND)
-  if (NOT ZLIBNG_FIND_QUIETLY)
-    message(STATUS "Found ZLIBNG: ${ZLIBNG_LIBRARIES}")
-    SET(ZLIBNG_FIND_QUIETLY TRUE)
-  endif (NOT ZLIBNG_FIND_QUIETLY)
-else (ZLIBNG_FOUND)
-  if (ZLIBNG_FIND_REQUIRED)
-    message(FATAL_ERROR "Could not find ZLIBNG library")
-  endif (ZLIBNG_FIND_REQUIRED)
-endif (ZLIBNG_FOUND)
-
-mark_as_advanced(
-  ZLIBNG_LIBRARY
-  ZLIBNG_INCLUDE_DIR
-  )
-
diff --git a/indra/cmake/FreeType.cmake b/indra/cmake/FreeType.cmake
index 5da33a88b3bcbdb4ffd2b4aeb8dc94746ea65301..740dc571793d2bbefab94b9566707c7a276e7a6c 100644
--- a/indra/cmake/FreeType.cmake
+++ b/indra/cmake/FreeType.cmake
@@ -1,19 +1,16 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-if (LINUX OR USESYSTEMLIBS)
-  include(FindPkgConfig)
+include_guard()
+add_library( ll::freetype INTERFACE IMPORTED )
 
-  pkg_check_modules(FREETYPE REQUIRED freetype2)
-  pkg_check_modules(FONTCONFIG REQUIRED fontconfig)
-else ()
-  use_prebuilt_binary(freetype)
-  set(FREETYPE_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/freetype2)
-  if (WINDOWS)
-    set(FREETYPE_LIBRARIES
+use_system_binary(freetype)
+use_prebuilt_binary(freetype)
+target_include_directories( ll::freetype SYSTEM INTERFACE  ${LIBS_PREBUILT_DIR}/include/freetype2/)
+if (WINDOWS)
+    target_link_libraries( ll::freetype INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/freetyped.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/freetype.lib)
-  else()
-    set(FREETYPE_LIBRARIES freetype)
-  endif()
-endif ()
+else()
+    target_link_libraries( ll::freetype INTERFACE freetype)
+endif()
diff --git a/indra/cmake/GLEXT.cmake b/indra/cmake/GLEXT.cmake
index f2562fdc44b7c476baa554315f0f6a5614c1498b..8308df6ee0a04ae534dd355b32a760248ae652e8 100644
--- a/indra/cmake/GLEXT.cmake
+++ b/indra/cmake/GLEXT.cmake
@@ -1,11 +1,13 @@
 # -*- cmake -*-
 include(Prebuilt)
+include(GLH)
 include(SDL2)
 
-if (NOT USESYSTEMLIBS AND NOT SDL_FOUND)
-  if (WINDOWS OR LINUX)
-    use_prebuilt_binary(glext)
-  endif (WINDOWS OR LINUX)
-  use_prebuilt_binary(glh_linear)
-  set(GLEXT_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include)
-endif ()
+add_library( ll::glext INTERFACE IMPORTED )
+if(NOT SDL_FOUND)
+if (WINDOWS OR LINUX)
+  use_system_binary(glext)
+  use_prebuilt_binary(glext)
+endif (WINDOWS OR LINUX)
+endif()
+
diff --git a/indra/cmake/GLH.cmake b/indra/cmake/GLH.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..0cefc3543ad158a9c30899620ad2680acfc1d248
--- /dev/null
+++ b/indra/cmake/GLH.cmake
@@ -0,0 +1,7 @@
+# -*- cmake -*-
+include(Prebuilt)
+
+add_library( ll::glh_linear INTERFACE IMPORTED )
+
+use_system_binary( glh_linear )
+use_prebuilt_binary(glh_linear)
diff --git a/indra/cmake/GStreamer010Plugin.cmake b/indra/cmake/GStreamer010Plugin.cmake
index 0657d37cf5ddf0048b1e35e8a84dfe2506d707c9..61f6f7403360ab62348f485d8135ab7b212234dc 100644
--- a/indra/cmake/GStreamer010Plugin.cmake
+++ b/indra/cmake/GStreamer010Plugin.cmake
@@ -1,38 +1,12 @@
 # -*- cmake -*-
 include(Prebuilt)
-include(LibXML2)
+if (NOT LINUX)
+  return()
+endif()
 
-if (USESYSTEMLIBS)
-  include(FindPkgConfig)
+add_library( ll::gstreamer INTERFACE IMPORTED )
+target_compile_definitions( ll::gstreamer INTERFACE LL_GSTREAMER010_ENABLED=1)
+use_system_binary(gstreamer)
 
-  pkg_check_modules(GSTREAMER010 REQUIRED gstreamer-0.10)
-  pkg_check_modules(GSTREAMER010_PLUGINS_BASE REQUIRED gstreamer-plugins-base-0.10)
-elseif (LINUX)
-  use_prebuilt_binary(gstreamer)
-
-  set(GSTREAMER010_FOUND ON FORCE BOOL)
-  set(GSTREAMER010_PLUGINS_BASE_FOUND ON FORCE BOOL)
-  set(GSTREAMER010_INCLUDE_DIRS
-      ${LIBS_PREBUILT_DIR}/include/gstreamer-0.10
-      ${LIBS_PREBUILT_DIR}/include/glib-2.0
-      ${LIBXML2_INCLUDE_DIRS}
-      )
-  # We don't need to explicitly link against gstreamer itself, because
-  # LLMediaImplGStreamer probes for the system's copy at runtime.
-  set(GSTREAMER010_LIBRARIES
-      gobject-2.0
-      gmodule-2.0
-      dl
-      gthread-2.0
-      glib-2.0
-      )
-endif ()
-
-if (GSTREAMER010_FOUND AND GSTREAMER010_PLUGINS_BASE_FOUND)
-  set(GSTREAMER010 ON CACHE BOOL "Build with GStreamer-0.10 streaming media support.")
-endif (GSTREAMER010_FOUND AND GSTREAMER010_PLUGINS_BASE_FOUND)
-
-if (GSTREAMER010)
-  add_definitions(-DLL_GSTREAMER010_ENABLED=1)
-endif (GSTREAMER010)
+use_prebuilt_binary(gstreamer)
 
diff --git a/indra/cmake/Havok.cmake b/indra/cmake/Havok.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..652760e626c227fe0a4ab3f5d985dbf56044b534
--- /dev/null
+++ b/indra/cmake/Havok.cmake
@@ -0,0 +1,125 @@
+# -*- cmake -*-
+include(Prebuilt)
+include_guard()
+
+use_prebuilt_binary(havok-source)
+
+set(Havok_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/havok/Source)
+list(APPEND Havok_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/havok/Demo)
+
+# HK_DISABLE_IMPLICIT_VVECTOR3_CONVERSION suppresses an intended conversion
+# function which Xcode scolds us will unconditionally enter infinite
+# recursion if called. This hides that function.
+add_definitions("-DHK_DISABLE_IMPLICIT_VVECTOR3_CONVERSION")
+
+set(HAVOK_DEBUG_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/debug/havok-fulldebug)
+set(HAVOK_RELEASE_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/release/havok)
+
+if (LL_DEBUG_HAVOK)
+   if (WIN32)
+      # Always link relwithdebinfo to havok-hybrid on windows.
+      set(HAVOK_RELWITHDEBINFO_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/debug/havok-hybrid)
+   else (WIN32)
+      set(HAVOK_RELWITHDEBINFO_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/debug/havok-fulldebug)
+   endif (WIN32)
+else (LL_DEBUG_HAVOK)
+   set(HAVOK_RELWITHDEBINFO_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/release/havok)
+endif (LL_DEBUG_HAVOK)
+
+set(HAVOK_LIBS
+    hkBase
+    hkCompat
+    hkGeometryUtilities
+    hkInternal
+    hkSerialize
+    hkSceneData
+    hkpCollide
+    hkpUtilities
+    hkpConstraintSolver
+    hkpDynamics
+    hkpInternal
+    hkaiInternal
+    hkaiPathfinding
+    hkaiAiPhysicsBridge
+    hkcdInternal
+    hkcdCollide
+    hkpVehicle
+    hkVisualize
+    hkaiVisualize
+    hkgpConvexDecomposition
+)
+
+unset(HK_DEBUG_LIBRARIES)
+unset(HK_RELEASE_LIBRARIES)
+unset(HK_RELWITHDEBINFO_LIBRARIES)
+
+if (DEBUG_PREBUILT)
+  # DEBUG_MESSAGE() displays debugging message
+  function(DEBUG_MESSAGE)
+    # prints message args separated by semicolons rather than spaces,
+    # but making it pretty is a lot more work
+    message(STATUS "${ARGN}")
+  endfunction(DEBUG_MESSAGE)
+else (DEBUG_PREBUILT)
+  # without DEBUG_PREBUILT, DEBUG_MESSAGE() is a no-op
+  function(DEBUG_MESSAGE)
+  endfunction(DEBUG_MESSAGE)
+endif (DEBUG_PREBUILT)
+
+# DEBUG_EXEC() reports each execute_process() before invoking
+function(DEBUG_EXEC)
+  DEBUG_MESSAGE(${ARGN})
+  execute_process(COMMAND ${ARGN})
+endfunction(DEBUG_EXEC)
+
+# *TODO: Figure out why we need to extract like this...
+foreach(HAVOK_LIB ${HAVOK_LIBS})
+  find_library(HAVOK_DEBUG_LIB_${HAVOK_LIB}   ${HAVOK_LIB} PATHS ${HAVOK_DEBUG_LIBRARY_PATH})
+  find_library(HAVOK_RELEASE_LIB_${HAVOK_LIB} ${HAVOK_LIB} PATHS ${HAVOK_RELEASE_LIBRARY_PATH})
+  find_library(HAVOK_RELWITHDEBINFO_LIB_${HAVOK_LIB} ${HAVOK_LIB} PATHS ${HAVOK_RELWITHDEBINFO_LIBRARY_PATH})
+  
+  if(LINUX)
+    set(debug_dir "${HAVOK_DEBUG_LIBRARY_PATH}/${HAVOK_LIB}")
+    set(release_dir "${HAVOK_RELEASE_LIBRARY_PATH}/${HAVOK_LIB}")
+    set(relwithdebinfo_dir "${HAVOK_RELWITHDEBINFO_LIBRARY_PATH}/${HAVOK_LIB}")
+
+    # Try to avoid extracting havok library each time we run cmake.
+    if("${havok_${HAVOK_LIB}_extracted}" STREQUAL "" AND EXISTS "${PREBUILD_TRACKING_DIR}/havok_${HAVOK_LIB}_extracted")
+      file(READ ${PREBUILD_TRACKING_DIR}/havok_${HAVOK_LIB}_extracted "havok_${HAVOK_LIB}_extracted")
+      DEBUG_MESSAGE("havok_${HAVOK_LIB}_extracted: \"${havok_${HAVOK_LIB}_extracted}\"")
+    endif("${havok_${HAVOK_LIB}_extracted}" STREQUAL "" AND EXISTS "${PREBUILD_TRACKING_DIR}/havok_${HAVOK_LIB}_extracted")
+
+    if(${PREBUILD_TRACKING_DIR}/havok_source_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/havok_${HAVOK_LIB}_extracted OR NOT ${havok_${HAVOK_LIB}_extracted} EQUAL 0)
+      DEBUG_MESSAGE("Extracting ${HAVOK_LIB}...")
+
+      foreach(lib ${debug_dir} ${release_dir} ${relwithdebinfo_dir})
+        DEBUG_EXEC("mkdir" ${lib})
+        DEBUG_EXEC("ar" "-xv" "../lib${HAVOK_LIB}.a"
+          WORKING_DIRECTORY ${lib})
+      endforeach(lib)
+
+      # Just assume success for now.
+      set(havok_${HAVOK_LIB}_extracted 0)
+      file(WRITE ${PREBUILD_TRACKING_DIR}/havok_${HAVOK_LIB}_extracted "${havok_${HAVOK_LIB}_extracted}")
+
+    endif()
+
+    file(GLOB extracted_debug "${debug_dir}/*.o")
+    file(GLOB extracted_release "${release_dir}/*.o")
+    file(GLOB extracted_relwithdebinfo "${relwithdebinfo_dir}/*.o")
+
+    DEBUG_MESSAGE("extracted_debug ${debug_dir}/*.o")
+    DEBUG_MESSAGE("extracted_release ${release_dir}/*.o")
+    DEBUG_MESSAGE("extracted_relwithdebinfo ${relwithdebinfo_dir}/*.o")
+
+    list(APPEND HK_DEBUG_LIBRARIES ${extracted_debug})
+    list(APPEND HK_RELEASE_LIBRARIES ${extracted_release})
+    list(APPEND HK_RELWITHDEBINFO_LIBRARIES ${extracted_relwithdebinfo})
+  else(LINUX)
+    # Win32
+    list(APPEND HK_DEBUG_LIBRARIES   ${HAVOK_DEBUG_LIB_${HAVOK_LIB}})
+    list(APPEND HK_RELEASE_LIBRARIES ${HAVOK_RELEASE_LIB_${HAVOK_LIB}})
+    list(APPEND HK_RELWITHDEBINFO_LIBRARIES ${HAVOK_RELWITHDEBINFO_LIB_${HAVOK_LIB}})
+  endif (LINUX)
+endforeach(HAVOK_LIB)
+
diff --git a/indra/cmake/Hunspell.cmake b/indra/cmake/Hunspell.cmake
index e8cd9ceaa7d90beabdf053e7b352582c9c685914..aa448b1ed97273237ecf95c0edee8aa5b5c138e3 100644
--- a/indra/cmake/Hunspell.cmake
+++ b/indra/cmake/Hunspell.cmake
@@ -2,31 +2,26 @@
 include(Linking)
 include(Prebuilt)
 
-set(HUNSPELL_FIND_QUIETLY ON)
-set(HUNSPELL_FIND_REQUIRED ON)
+include_guard()
+use_prebuilt_binary(dictionaries)
 
-if (USESYSTEMLIBS)
-  include(FindHUNSPELL)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(libhunspell)
-  if (WINDOWS)
-    set(HUNSPELL_LIBRARY 
+add_library( ll::hunspell INTERFACE IMPORTED )
+use_system_binary(hunspell)
+use_prebuilt_binary(libhunspell)
+if (WINDOWS)
+    target_link_libraries( ll::hunspell INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libhunspell.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libhunspell.lib
         )
-  elseif(DARWIN)
-    set(HUNSPELL_LIBRARY 
+elseif(DARWIN)
+    target_link_libraries( ll::hunspell INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libhunspell-1.7.a
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libhunspell-1.7.a
         )
-  elseif(LINUX)
-    set(HUNSPELL_LIBRARY 
+elseif(LINUX)
+    target_link_libraries( ll::hunspell INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libhunspell-1.7.a
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libhunspell-1.7.a
         )
-  else()
-    message(FATAL_ERROR "Invalid platform")
-  endif()
-  set(HUNSPELL_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/hunspell)
-  use_prebuilt_binary(dictionaries)
-endif (USESYSTEMLIBS)
+endif()
+target_include_directories( ll::hunspell SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/hunspell)
diff --git a/indra/cmake/JPEG.cmake b/indra/cmake/JPEG.cmake
index 819a59af2a9e702f15ee9d6a34a1d78233bf1ea5..c13ea4fbade6dedae707c1e885332ceb9b5b013f 100644
--- a/indra/cmake/JPEG.cmake
+++ b/indra/cmake/JPEG.cmake
@@ -2,21 +2,19 @@
 include(Prebuilt)
 
 include(Linking)
-set(JPEG_FIND_QUIETLY ON)
-set(JPEG_FIND_REQUIRED ON)
 
-if (USESYSTEMLIBS)
-  include(FindJPEG)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(libjpeg-turbo)
-  if (LINUX)
-    set(JPEG_LIBRARIES jpeg)
-  elseif (DARWIN)
-    set(JPEG_LIBRARIES jpeg)
-  elseif (WINDOWS)
-    set(JPEG_LIBRARIES
+include_guard()
+add_library( ll::libjpeg INTERFACE IMPORTED )
+
+use_system_binary(libjpeg)
+use_prebuilt_binary(libjpeg-turbo)
+if (LINUX)
+  target_link_libraries( ll::libjpeg INTERFACE jpeg)
+elseif (DARWIN)
+  target_link_libraries( ll::libjpeg INTERFACE jpeg)
+elseif (WINDOWS)
+    target_link_libraries( ll::libjpeg INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/jpeg.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/jpeg.lib)
-  endif (LINUX)
-  set(JPEG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-endif (USESYSTEMLIBS)
+endif (LINUX)
+target_include_directories( ll::libjpeg SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
diff --git a/indra/cmake/LLAddBuildTest.cmake b/indra/cmake/LLAddBuildTest.cmake
index ce4a26c44d55fb6dad9d2c6f27df7e3e37a6ccb1..e41f5fea926ac746d60feb43b95016ec9fdceb00 100644
--- a/indra/cmake/LLAddBuildTest.cmake
+++ b/indra/cmake/LLAddBuildTest.cmake
@@ -17,99 +17,87 @@ MACRO(LL_ADD_PROJECT_UNIT_TESTS project sources)
   # * properties for each sourcefile passed in indicate what libs to link that file with (MAKE NO ASSUMPTIONS ASIDE FROM TUT)
   #
   # More info and examples at: https://wiki.secondlife.com/wiki/How_to_add_unit_tests_to_indra_code
-  #
-  # WARNING: do NOT modify this code without working with poppy -
-  # there is another branch that will conflict heavily with any changes here.
 
-  IF(LL_TEST_VERBOSE)
-    MESSAGE("LL_ADD_PROJECT_UNIT_TESTS UNITTEST_PROJECT_${project} sources: ${sources}")
-  ENDIF(LL_TEST_VERBOSE)
+  # This here looks weird, but is needed. It will inject GoogleMock into projects that forgot to include `this` (LLAddBuildTest.cmake)
+  # But through some other means have access to this macro
+
+  if(LL_TEST_VERBOSE)
+    message("LL_ADD_PROJECT_UNIT_TESTS UNITTEST_PROJECT_${project} sources: ${sources}")
+  endif()
 
   # Start with the header and project-wide setup before making targets
   #project(UNITTEST_PROJECT_${project})
   # Setup includes, paths, etc
-  SET(alltest_SOURCE_FILES
-    ${CMAKE_SOURCE_DIR}/test/test.cpp
-    ${CMAKE_SOURCE_DIR}/test/lltut.cpp
-    )
-  SET(alltest_DEP_TARGETS
-    # needed by the test harness itself
-    ${APRUTIL_LIBRARIES}
-    ${APR_LIBRARIES}
-    llcommon
-    )
-  IF(NOT "${project}" STREQUAL "llmath")
+  set(alltest_SOURCE_FILES
+          ${CMAKE_SOURCE_DIR}/test/test.cpp
+          ${CMAKE_SOURCE_DIR}/test/lltut.cpp
+          )
+  set(alltest_DEP_TARGETS
+          # needed by the test harness itself
+          llcommon
+          )
+
+  set(alltest_LIBRARIES
+          llcommon
+          ll::googlemock
+          )
+  if(NOT "${project}" STREQUAL "llmath")
     # add llmath as a dep unless the tested module *is* llmath!
-    LIST(APPEND alltest_DEP_TARGETS
-      llmath
-      )
-  ENDIF(NOT "${project}" STREQUAL "llmath")
-  SET(alltest_INCLUDE_DIRS
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LIBS_OPEN_DIR}/test
-    )
-  SET(alltest_LIBRARIES
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    ${PTHREAD_LIBRARY}
-    ${WINDOWS_LIBRARIES}
-    )
+    list(APPEND alltest_DEP_TARGETS llmath)
+    list(APPEND alltest_LIBRARIES llmath )
+  endif()
+
   # Headers, for convenience in targets.
-  SET(alltest_HEADER_FILES
-    ${CMAKE_SOURCE_DIR}/test/test.h
-    )
+  set(alltest_HEADER_FILES ${CMAKE_SOURCE_DIR}/test/test.h)
 
   # start the source test executable definitions
-  SET(${project}_TEST_OUTPUT "")
-  FOREACH (source ${sources})
-    STRING( REGEX REPLACE "(.*)\\.[^.]+$" "\\1" name ${source} )
-    STRING( REGEX REPLACE ".*\\.([^.]+)$" "\\1" extension ${source} )
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS UNITTEST_PROJECT_${project} individual source: ${source} (${name}.${extension})")
-    ENDIF(LL_TEST_VERBOSE)
+  set(${project}_TEST_OUTPUT "")
+  foreach (source ${sources})
+    string( REGEX REPLACE "(.*)\\.[^.]+$" "\\1" name ${source} )
+    string( REGEX REPLACE ".*\\.([^.]+)$" "\\1" extension ${source} )
+    if(LL_TEST_VERBOSE)
+      message("LL_ADD_PROJECT_UNIT_TESTS UNITTEST_PROJECT_${project} individual source: ${source} (${name}.${extension})")
+    endif()
 
     #
     # Per-codefile additional / external source, header, and include dir property extraction
     #
     # Source
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_SOURCE_FILES ${source} LL_TEST_ADDITIONAL_SOURCE_FILES)
-    SET(${name}_test_SOURCE_FILES
-      ${source}
-      tests/${name}_test.${extension}
-      ${alltest_SOURCE_FILES}
-      ${${name}_test_additional_SOURCE_FILES} )
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_SOURCE_FILES ${${name}_test_SOURCE_FILES}")
-    ENDIF(LL_TEST_VERBOSE)
-
-    if (USE_SENTRY)
-      SET_PROPERTY(SOURCE ${${name}_test_SOURCE_FILES}
-          APPEND PROPERTY COMPILE_DEFINITIONS "${SENTRY_DEFINE}")
-    endif (USE_SENTRY)
+    set(${name}_test_SOURCE_FILES
+            ${source}
+            tests/${name}_test.${extension}
+            ${alltest_SOURCE_FILES}
+            ${${name}_test_additional_SOURCE_FILES} )
+    if(LL_TEST_VERBOSE)
+      message("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_SOURCE_FILES ${${name}_test_SOURCE_FILES}")
+    endif()
 
     # Headers
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_HEADER_FILES ${source} LL_TEST_ADDITIONAL_HEADER_FILES)
-    SET(${name}_test_HEADER_FILES ${name}.h ${${name}_test_additional_HEADER_FILES})
-    set_source_files_properties(${${name}_test_HEADER_FILES} PROPERTIES HEADER_FILE_ONLY TRUE)
-    LIST(APPEND ${name}_test_SOURCE_FILES ${${name}_test_HEADER_FILES})
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_HEADER_FILES ${${name}_test_HEADER_FILES}")
-    ENDIF(LL_TEST_VERBOSE)
-    # Include dirs
+    set(${name}_test_HEADER_FILES ${name}.h ${${name}_test_additional_HEADER_FILES})
+    list(APPEND ${name}_test_SOURCE_FILES ${${name}_test_HEADER_FILES})
+    if(LL_TEST_VERBOSE)
+      message("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_HEADER_FILES ${${name}_test_HEADER_FILES}")
+    endif()
+
+    # Setup target
+    add_executable(PROJECT_${project}_TEST_${name} ${${name}_test_SOURCE_FILES})
+
+    # Cannot declare a dependency on ${project} because the executable create above will later declare
+    # add_dependencies( ${project} ${project}_tests)
+    # as such grab ${project}'s interface include dirs and inject them here
+    get_property( ${name}_test_additional_INCLUDE_DIRS TARGET ${project} PROPERTY INTERFACE_INCLUDE_DIRECTORIES )
+    target_include_directories (PROJECT_${project}_TEST_${name} PRIVATE ${${name}_test_additional_INCLUDE_DIRS} )
+
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_INCLUDE_DIRS ${source} LL_TEST_ADDITIONAL_INCLUDE_DIRS)
-    INCLUDE_DIRECTORIES(${alltest_INCLUDE_DIRS} ${${name}_test_additional_INCLUDE_DIRS} )
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_INCLUDE_DIRS ${${name}_test_additional_INCLUDE_DIRS}")
-    ENDIF(LL_TEST_VERBOSE)
+    target_include_directories (PROJECT_${project}_TEST_${name} PRIVATE ${${name}_test_additional_INCLUDE_DIRS} )
 
+    target_include_directories (PROJECT_${project}_TEST_${name} PRIVATE ${LIBS_OPEN_DIR}/test )
 
-    # Setup target
-    ADD_EXECUTABLE(PROJECT_${project}_TEST_${name} ${${name}_test_SOURCE_FILES})
-    SET_TARGET_PROPERTIES(PROJECT_${project}_TEST_${name} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${EXE_STAGING_DIR}")
+    set_target_properties(PROJECT_${project}_TEST_${name} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${EXE_STAGING_DIR}")
     if (DARWIN)
-      SET_TARGET_PROPERTIES(PROJECT_${project}_TEST_${name} 
+      set_target_properties(PROJECT_${project}_TEST_${name} 
           PROPERTIES
           BUILD_WITH_INSTALL_RPATH 1
           INSTALL_RPATH "@executable_path/Resources"
@@ -124,128 +112,119 @@ MACRO(LL_ADD_PROJECT_UNIT_TESTS project sources)
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_PROJECTS ${source} LL_TEST_ADDITIONAL_PROJECTS)
     # Libraries
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_LIBRARIES ${source} LL_TEST_ADDITIONAL_LIBRARIES)
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_PROJECTS ${${name}_test_additional_PROJECTS}")
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_LIBRARIES ${${name}_test_additional_LIBRARIES}")
-    ENDIF(LL_TEST_VERBOSE)
+
+    if(LL_TEST_VERBOSE)
+      message("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_PROJECTS ${${name}_test_additional_PROJECTS}")
+      message("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_LIBRARIES ${${name}_test_additional_LIBRARIES}")
+    endif()
+
     # Add to project
-    TARGET_LINK_LIBRARIES(PROJECT_${project}_TEST_${name} ${alltest_LIBRARIES} ${alltest_DEP_TARGETS} ${${name}_test_additional_PROJECTS} ${${name}_test_additional_LIBRARIES} )
+    target_link_libraries(PROJECT_${project}_TEST_${name} ${alltest_LIBRARIES} ${${name}_test_additional_PROJECTS} ${${name}_test_additional_LIBRARIES} )
+    add_dependencies( PROJECT_${project}_TEST_${name} ${alltest_DEP_TARGETS})
     # Compile-time Definitions
     GET_OPT_SOURCE_FILE_PROPERTY(${name}_test_additional_CFLAGS ${source} LL_TEST_ADDITIONAL_CFLAGS)
-    SET_TARGET_PROPERTIES(PROJECT_${project}_TEST_${name}
-      PROPERTIES
-      COMPILE_FLAGS "${${name}_test_additional_CFLAGS}"
-      COMPILE_DEFINITIONS "LL_TEST=${name};LL_TEST_${name}")
-    IF(LL_TEST_VERBOSE)
-      MESSAGE("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_CFLAGS ${${name}_test_additional_CFLAGS}")
-    ENDIF(LL_TEST_VERBOSE)
-     
+    set_target_properties(PROJECT_${project}_TEST_${name}
+            PROPERTIES
+            COMPILE_FLAGS "${${name}_test_additional_CFLAGS}"
+            COMPILE_DEFINITIONS "LL_TEST=${name};LL_TEST_${name}")
+    if(LL_TEST_VERBOSE)
+      message("LL_ADD_PROJECT_UNIT_TESTS ${name}_test_additional_CFLAGS ${${name}_test_additional_CFLAGS}")
+    endif()
+
     #
     # Setup test targets
     #
-    SET(TEST_EXE $<TARGET_FILE:PROJECT_${project}_TEST_${name}>)
-    SET(TEST_OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/PROJECT_${project}_TEST_${name}_ok.txt)
-    SET(TEST_CMD ${TEST_EXE} --touch=${TEST_OUTPUT} --sourcedir=${CMAKE_CURRENT_SOURCE_DIR})
+    set(TEST_EXE $<TARGET_FILE:PROJECT_${project}_TEST_${name}>)
+    set(TEST_OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/PROJECT_${project}_TEST_${name}_ok.txt)
+    set(TEST_CMD ${TEST_EXE} --touch=${TEST_OUTPUT} --sourcedir=${CMAKE_CURRENT_SOURCE_DIR})
 
     # daveh - what configuration does this use? Debug? it's cmake-time, not build time. + poppy 2009-04-19
-    IF(LL_TEST_VERBOSE)
-      MESSAGE(STATUS "LL_ADD_PROJECT_UNIT_TESTS ${name} test_cmd  = ${TEST_CMD}")
-    ENDIF(LL_TEST_VERBOSE)
+    if(LL_TEST_VERBOSE)
+      message(STATUS "LL_ADD_PROJECT_UNIT_TESTS ${name} test_cmd  = ${TEST_CMD}")
+    endif()
 
     SET_TEST_PATH(LD_LIBRARY_PATH)
     LL_TEST_COMMAND(TEST_SCRIPT_CMD "${LD_LIBRARY_PATH}" ${TEST_CMD})
-    IF(LL_TEST_VERBOSE)
-      MESSAGE(STATUS "LL_ADD_PROJECT_UNIT_TESTS ${name} test_script  = ${TEST_SCRIPT_CMD}")
-    ENDIF(LL_TEST_VERBOSE)
-    # Add test 
-    ADD_CUSTOM_COMMAND(
-        OUTPUT ${TEST_OUTPUT}
-        COMMAND ${TEST_SCRIPT_CMD}
-        DEPENDS PROJECT_${project}_TEST_${name}
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-        )
+    if(LL_TEST_VERBOSE)
+      message(STATUS "LL_ADD_PROJECT_UNIT_TESTS ${name} test_script  = ${TEST_SCRIPT_CMD}")
+    endif()
+
+    # Add test
+    add_custom_command(
+            OUTPUT ${TEST_OUTPUT}
+            COMMAND ${TEST_SCRIPT_CMD}
+            DEPENDS PROJECT_${project}_TEST_${name}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    )
     # Why not add custom target and add POST_BUILD command?
     # Slightly less uncertain behavior
     # (OUTPUT commands run non-deterministically AFAIK) + poppy 2009-04-19
-    # > I did not use a post build step as I could not make it notify of a 
+    # > I did not use a post build step as I could not make it notify of a
     # > failure after the first time you build and fail a test. - daveh 2009-04-20
-    LIST(APPEND ${project}_TEST_OUTPUT ${TEST_OUTPUT})
-  ENDFOREACH (source)
+    list(APPEND ${project}_TEST_OUTPUT ${TEST_OUTPUT})
+  endforeach (source)
 
   # Add the test runner target per-project
   # (replaces old _test_ok targets all over the place)
-  ADD_CUSTOM_TARGET(${project}_tests ALL DEPENDS ${${project}_TEST_OUTPUT})
-  ADD_DEPENDENCIES(${project} ${project}_tests)
+  add_custom_target(${project}_tests ALL DEPENDS ${${project}_TEST_OUTPUT})
+  add_dependencies(${project} ${project}_tests)
 ENDMACRO(LL_ADD_PROJECT_UNIT_TESTS)
 
 #*****************************************************************************
 #   GET_OPT_SOURCE_FILE_PROPERTY
 #*****************************************************************************
 MACRO(GET_OPT_SOURCE_FILE_PROPERTY var filename property)
-  GET_SOURCE_FILE_PROPERTY(${var} "${filename}" "${property}")
-  IF("${${var}}" MATCHES NOTFOUND)
-    SET(${var} "")
-  ENDIF("${${var}}" MATCHES NOTFOUND)
+  get_source_file_property(${var} "${filename}" "${property}")
+  if("${${var}}" MATCHES NOTFOUND)
+    set(${var} "")
+  endif()
 ENDMACRO(GET_OPT_SOURCE_FILE_PROPERTY)
 
 #*****************************************************************************
 #   LL_ADD_INTEGRATION_TEST
 #*****************************************************************************
-FUNCTION(LL_ADD_INTEGRATION_TEST 
-    testname
-    additional_source_files
-    library_dependencies
-# variable args
-    )
+FUNCTION(LL_ADD_INTEGRATION_TEST
+        testname
+        additional_source_files
+        library_dependencies
+        # variable args
+        )
   if(TEST_DEBUG)
     message(STATUS "Adding INTEGRATION_TEST_${testname} - debug output is on")
-  endif(TEST_DEBUG)
+  endif()
 
-  SET(source_files
-    tests/${testname}_test.cpp
-    ${CMAKE_SOURCE_DIR}/test/test.cpp
-    ${CMAKE_SOURCE_DIR}/test/lltut.cpp
-    ${additional_source_files}
-    )
+  set(source_files
+          tests/${testname}_test.cpp
+          ${CMAKE_SOURCE_DIR}/test/test.cpp
+          ${CMAKE_SOURCE_DIR}/test/lltut.cpp
+          ${additional_source_files}
+          )
 
-  SET(libraries
-    ${library_dependencies}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    ${PTHREAD_LIBRARY}
-    )
+  set(libraries
+          ${library_dependencies}
+          ll::googlemock
+          )
 
   # Add test executable build target
   if(TEST_DEBUG)
     message(STATUS "ADD_EXECUTABLE(INTEGRATION_TEST_${testname} ${source_files})")
-  endif(TEST_DEBUG)
-  ADD_EXECUTABLE(INTEGRATION_TEST_${testname} ${source_files})
-  SET_TARGET_PROPERTIES(INTEGRATION_TEST_${testname}
-    PROPERTIES
-    RUNTIME_OUTPUT_DIRECTORY "${EXE_STAGING_DIR}"
-    COMPILE_DEFINITIONS "LL_TEST=${testname};LL_TEST_${testname}"
-    )
-
-  if(USESYSTEMLIBS)
-    SET_TARGET_PROPERTIES(INTEGRATION_TEST_${testname} PROPERTIES COMPILE_FLAGS -I"${TUT_INCLUDE_DIR}")
-  endif(USESYSTEMLIBS)
+  endif()
 
-  if (USE_SENTRY)
-      SET_PROPERTY(SOURCE ${source_files}
-          APPEND PROPERTY COMPILE_DEFINITIONS "${SENTRY_DEFINE}")
-  endif (USE_SENTRY)
+  add_executable(INTEGRATION_TEST_${testname} ${source_files})
+  set_target_properties(INTEGRATION_TEST_${testname}
+          PROPERTIES
+          RUNTIME_OUTPUT_DIRECTORY "${EXE_STAGING_DIR}"
+          COMPILE_DEFINITIONS "LL_TEST=${testname};LL_TEST_${testname}"
+          )
 
-  # The following was copied to llcorehttp/CMakeLists.txt's texture_load target. 
+  # The following was copied to llcorehttp/CMakeLists.txt's texture_load target.
   # Any changes made here should be replicated there.
   if (WINDOWS)
-    SET_TARGET_PROPERTIES(INTEGRATION_TEST_${testname}
-        PROPERTIES
-        LINK_FLAGS "/debug /NODEFAULTLIB:LIBCMT /SUBSYSTEM:CONSOLE"
-        LINK_FLAGS_DEBUG "/NODEFAULTLIB:\"LIBCMT;LIBCMTD;MSVCRT\" /INCREMENTAL:NO"
-        LINK_FLAGS_RELEASE ""
-        )
-  endif (WINDOWS)
+    set_target_properties(INTEGRATION_TEST_${testname}
+            PROPERTIES
+            LINK_FLAGS "/debug /NODEFAULTLIB:LIBCMT /SUBSYSTEM:CONSOLE"
+            )
+  endif ()
 
   if (DARWIN)
     SET_TARGET_PROPERTIES(INTEGRATION_TEST_${testname}
@@ -258,14 +237,16 @@ FUNCTION(LL_ADD_INTEGRATION_TEST
   # Add link deps to the executable
   if(TEST_DEBUG)
     message(STATUS "TARGET_LINK_LIBRARIES(INTEGRATION_TEST_${testname} ${libraries})")
-  endif(TEST_DEBUG)
-  TARGET_LINK_LIBRARIES(INTEGRATION_TEST_${testname} ${libraries})
+  endif()
+
+  target_link_libraries(INTEGRATION_TEST_${testname} ${libraries})
+  target_include_directories (INTEGRATION_TEST_${testname} PRIVATE ${LIBS_OPEN_DIR}/test )
 
   # Create the test running command
-  SET(test_command ${ARGN})
-  SET(TEST_EXE $<TARGET_FILE:INTEGRATION_TEST_${testname}>)
-  LIST(FIND test_command "{}" test_exe_pos)
-  IF(test_exe_pos LESS 0)
+  set(test_command ${ARGN})
+  set(TEST_EXE $<TARGET_FILE:INTEGRATION_TEST_${testname}>)
+  list(FIND test_command "{}" test_exe_pos)
+  if(test_exe_pos LESS 0)
     # The {} marker means "the full pathname of the test executable."
     # test_exe_pos -1 means we didn't find it -- so append the test executable
     # name to $ARGN, the variable part of the arg list. This is convenient
@@ -274,26 +255,26 @@ FUNCTION(LL_ADD_INTEGRATION_TEST
     # pathname of the test program as the last of its args. You need specify
     # {} only if the test program's pathname isn't the last argument in the
     # desired command line.
-    LIST(APPEND test_command "${TEST_EXE}")
-  ELSE (test_exe_pos LESS 0)
+    list(APPEND test_command "${TEST_EXE}")
+  else (test_exe_pos LESS 0)
     # Found {} marker at test_exe_pos. Remove the {}...
-    LIST(REMOVE_AT test_command test_exe_pos)
+    list(REMOVE_AT test_command test_exe_pos)
     # ...and replace it with the actual name of the test executable.
-    LIST(INSERT test_command test_exe_pos "${TEST_EXE}")
-  ENDIF (test_exe_pos LESS 0)
+    list(INSERT test_command test_exe_pos "${TEST_EXE}")
+  endif()
 
   SET_TEST_PATH(LD_LIBRARY_PATH)
   LL_TEST_COMMAND(TEST_SCRIPT_CMD "${LD_LIBRARY_PATH}" ${test_command})
 
   if(TEST_DEBUG)
     message(STATUS "TEST_SCRIPT_CMD: ${TEST_SCRIPT_CMD}")
-  endif(TEST_DEBUG)
+  endif()
 
-  ADD_CUSTOM_COMMAND(
-    TARGET INTEGRATION_TEST_${testname}
-    POST_BUILD
-    COMMAND ${TEST_SCRIPT_CMD}
-    )
+  add_custom_command(
+          TARGET INTEGRATION_TEST_${testname}
+          POST_BUILD
+          COMMAND ${TEST_SCRIPT_CMD}
+  )
 
   # Use CTEST? Not sure how to yet...
   # ADD_TEST(INTEGRATION_TEST_RUNNER_${testname} ${TEST_SCRIPT_CMD})
@@ -308,18 +289,14 @@ MACRO(SET_TEST_PATH LISTVAR)
     # We typically build/package only Release variants of third-party
     # libraries, so append the Release staging dir in case the library being
     # sought doesn't have a debug variant.
-    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR} ${SHARED_LIB_STAGING_DIR}/Release)
+    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} ${SHARED_LIB_STAGING_DIR}/Release)
   ELSEIF(DARWIN)
     # We typically build/package only Release variants of third-party
     # libraries, so append the Release staging dir in case the library being
     # sought doesn't have a debug variant.
-    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/Resources ${SHARED_LIB_STAGING_DIR}/Release/Resources /usr/lib)
+    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} ${SHARED_LIB_STAGING_DIR}/Release/Resources /usr/lib)
   ELSE(WINDOWS)
     # Linux uses a single staging directory anyway.
-    IF (USESYSTEMLIBS)
-      set(${LISTVAR} ${CMAKE_BINARY_DIR}/llcommon /usr/lib /usr/local/lib)
-    ELSE (USESYSTEMLIBS)
-      set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} /usr/lib)
-    ENDIF (USESYSTEMLIBS)
+    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} /usr/lib)
   ENDIF(WINDOWS)
 ENDMACRO(SET_TEST_PATH)
diff --git a/indra/cmake/LLAppearance.cmake b/indra/cmake/LLAppearance.cmake
index 675330ec72b59f2d1049ec7811f3e896b95b1863..bf34b13714a0d53b02023d259c3b6a47e43a5f63 100644
--- a/indra/cmake/LLAppearance.cmake
+++ b/indra/cmake/LLAppearance.cmake
@@ -2,26 +2,9 @@
 
 include(Variables)
 include(Boost)
-include(LLMessage)
 include(LLCoreHttp)
 
-set(LLAPPEARANCE_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llappearance
-    )
 
-if (BUILD_HEADLESS)
-  set(LLAPPEARANCE_HEADLESS_LIBRARIES
-    llappearanceheadless
-    )
-endif (BUILD_HEADLESS)
-
-set(LLAPPEARANCE_LIBRARIES llappearance
-    llmessage
-    llcorehttp
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    )
 
 
 
diff --git a/indra/cmake/LLAudio.cmake b/indra/cmake/LLAudio.cmake
index 1a9b1125bd5dc5dccb231cbead8d49cdb46cc5f6..c842c69bfeca8b96238d5386c3d341ab6fe44ef1 100644
--- a/indra/cmake/LLAudio.cmake
+++ b/indra/cmake/LLAudio.cmake
@@ -1,10 +1,3 @@
 # -*- cmake -*-
 
 include(Audio)
-
-set(LLAUDIO_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llaudio
-    )
-
-# be exhaustive here
-set(LLAUDIO_LIBRARIES llaudio ${VORBISENC_LIBRARIES} ${VORBISFILE_LIBRARIES} ${VORBIS_LIBRARIES} ${OGG_LIBRARIES} ${OPENAL_LIBRARIES})
diff --git a/indra/cmake/LLCharacter.cmake b/indra/cmake/LLCharacter.cmake
deleted file mode 100644
index 9b2f5c4956ac9d005334e8a6485b16bfef7cb194..0000000000000000000000000000000000000000
--- a/indra/cmake/LLCharacter.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- cmake -*-
-
-set(LLCHARACTER_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llcharacter
-    )
-
-set(LLCHARACTER_LIBRARIES llcharacter)
diff --git a/indra/cmake/LLCommon.cmake b/indra/cmake/LLCommon.cmake
index 8276820fa79c95e263f837a02d0576d0b0b205d2..ea85a3c40debd415a70d798a27aa4061740d6489 100644
--- a/indra/cmake/LLCommon.cmake
+++ b/indra/cmake/LLCommon.cmake
@@ -6,38 +6,4 @@ include(EXPAT)
 include(Tracy)
 include(ZLIBNG)
 
-set(LLCOMMON_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llcommon
-    ${APRUTIL_INCLUDE_DIR}
-    ${APR_INCLUDE_DIR}
-    ${Boost_INCLUDE_DIRS}
-    )
-set(LLCOMMON_SYSTEM_INCLUDE_DIRS
-    ${Boost_INCLUDE_DIRS}
-    )
-
-if (LINUX)
-    # In order to support using ld.gold on linux, we need to explicitely
-    # specify all libraries that llcommon uses.
-    # llcommon uses `clock_gettime' which is provided by librt on linux.
-    set(LLCOMMON_LIBRARIES llcommon 
-        ${BOOST_FIBER_LIBRARY} 
-        ${BOOST_CONTEXT_LIBRARY} 
-        ${BOOST_THREAD_LIBRARY} 
-        ${BOOST_SYSTEM_LIBRARY} 
-        rt
-        )
-else (LINUX)
-    set(LLCOMMON_LIBRARIES llcommon
-        ${BOOST_FIBER_LIBRARY} 
-        ${BOOST_CONTEXT_LIBRARY} 
-        ${BOOST_THREAD_LIBRARY}
-        ${BOOST_STACKTRACE_LIBRARY} 
-        ${BOOST_SYSTEM_LIBRARY}
-        )
-endif (LINUX)
-
-set(LLCOMMON_LINK_SHARED OFF CACHE BOOL "Build the llcommon target as a static library.")
-if(LLCOMMON_LINK_SHARED)
-  add_definitions(-DLL_COMMON_LINK_SHARED=1)
-endif(LLCOMMON_LINK_SHARED)
+include(XmlRpcEpi)
diff --git a/indra/cmake/LLCoreHttp.cmake b/indra/cmake/LLCoreHttp.cmake
index 613453ab5d58dcffb5bb44f96f8435958627662d..22ed5fef9cbda11aea6f71ee031554595ba2c521 100644
--- a/indra/cmake/LLCoreHttp.cmake
+++ b/indra/cmake/LLCoreHttp.cmake
@@ -2,16 +2,4 @@
 
 include(CURL)
 include(OpenSSL)
-include(Boost)
-
-set(LLCOREHTTP_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llcorehttp
-    ${CURL_INCLUDE_DIRS}
-    ${OPENSSL_INCLUDE_DIRS}
-    ${BOOST_INCLUDE_DIRS}
-    )
-
-set(LLCOREHTTP_LIBRARIES llcorehttp
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY})
+include(NGHTTP2)
diff --git a/indra/cmake/LLFileSystem.cmake b/indra/cmake/LLFileSystem.cmake
deleted file mode 100644
index 5b50a10d5b3ef53bd3c5d09323253f0f78930aab..0000000000000000000000000000000000000000
--- a/indra/cmake/LLFileSystem.cmake
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- cmake -*-
-include(Boost)
-
-set(LLFILESYSTEM_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llfilesystem
-    )
-
-set(LLFILESYSTEM_LIBRARIES llfilesystem ${BOOST_FILESYSTEM_LIBRARY} ${BOOST_SYSTEM_LIBRARY})
diff --git a/indra/cmake/LLImage.cmake b/indra/cmake/LLImage.cmake
index ec3da890811e8b27a1d41e0bef4f816bd10a3e72..8e0b44dfe491e3c93669ea9dccd62807dc272a99 100644
--- a/indra/cmake/LLImage.cmake
+++ b/indra/cmake/LLImage.cmake
@@ -1,11 +1,4 @@
 # -*- cmake -*-
 
-include(JPEG)
+#include(JPEG)
 include(PNG)
-
-set(LLIMAGE_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llimage
-    ${JPEG_INCLUDE_DIRS}
-    )
-
-set(LLIMAGE_LIBRARIES llimage)
diff --git a/indra/cmake/LLImageJ2COJ.cmake b/indra/cmake/LLImageJ2COJ.cmake
deleted file mode 100644
index 1bcf205f2dbae7d92bbc41a94301b9eac292cbab..0000000000000000000000000000000000000000
--- a/indra/cmake/LLImageJ2COJ.cmake
+++ /dev/null
@@ -1,5 +0,0 @@
-# -*- cmake -*-
-
-include(OpenJPEG)
-
-set(LLIMAGEJ2COJ_LIBRARIES llimagej2coj)
diff --git a/indra/cmake/LLInventory.cmake b/indra/cmake/LLInventory.cmake
deleted file mode 100644
index c3dc077a2bab4e41dd00b10fd5f5e74e10f58c31..0000000000000000000000000000000000000000
--- a/indra/cmake/LLInventory.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- cmake -*-
-
-set(LLINVENTORY_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llinventory
-    )
-
-set(LLINVENTORY_LIBRARIES llinventory)
diff --git a/indra/cmake/LLKDU.cmake b/indra/cmake/LLKDU.cmake
index 111ed956e52fce47f564a35eeef64197b6475bda..95b47f2ac3793e676330274744d305b022d9f081 100644
--- a/indra/cmake/LLKDU.cmake
+++ b/indra/cmake/LLKDU.cmake
@@ -7,18 +7,23 @@
 #  option(USE_KDU "Use Kakadu library." ON)
 #endif (INSTALL_PROPRIETARY)
 
+include_guard()
+add_library( ll::kdu INTERFACE IMPORTED )
+
 if (USE_KDU)
   include(Prebuilt)
   use_prebuilt_binary(kdu)
   if (WINDOWS)
-    set(KDU_LIBRARY 
+    target_link_libraries( ll::kdu INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/kdud.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/kdu.lib
       )
   else (WINDOWS)
-    set(KDU_LIBRARY libkdu.a)
+    target_link_libraries( ll::kdu INTERFACE libkdu.a)
   endif (WINDOWS)
-  set(KDU_INCLUDE_DIR ${AUTOBUILD_INSTALL_DIR}/include/kdu)
-  set(LLKDU_INCLUDE_DIRS ${LIBS_OPEN_DIR}/llkdu)
-  set(LLKDU_LIBRARIES llkdu)
+
+  target_include_directories( ll::kdu SYSTEM INTERFACE
+          ${AUTOBUILD_INSTALL_DIR}/include/kdu
+          ${LIBS_OPEN_DIR}/llkdu
+          )
 endif (USE_KDU)
diff --git a/indra/cmake/LLLogin.cmake b/indra/cmake/LLLogin.cmake
deleted file mode 100644
index 47d171876a00df3fea3bf61a794cb3ff81fcd07b..0000000000000000000000000000000000000000
--- a/indra/cmake/LLLogin.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- cmake -*-
-
-set(LLLOGIN_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/viewer_components/login
-    )
-
-set(LLLOGIN_LIBRARIES lllogin)
diff --git a/indra/cmake/LLMath.cmake b/indra/cmake/LLMath.cmake
index 893920ae6fbcb6da5bbdce10e65e0dd58b717733..a707c75bc415d8133c29a5a016950d7a25dff1a3 100644
--- a/indra/cmake/LLMath.cmake
+++ b/indra/cmake/LLMath.cmake
@@ -1,7 +1,2 @@
 # -*- cmake -*-
 
-set(LLMATH_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llmath
-    )
-
-set(LLMATH_LIBRARIES llmath)
diff --git a/indra/cmake/LLMeshOptimizer.cmake b/indra/cmake/LLMeshOptimizer.cmake
deleted file mode 100644
index b79944f61875a2cffef4f51e06a531fc5d4479c2..0000000000000000000000000000000000000000
--- a/indra/cmake/LLMeshOptimizer.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- cmake -*-
-
-set(LLMESHOPTIMIZER_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llmeshoptimizer
-    )
-
-set(LLMESHOPTIMIZER_LIBRARIES llmeshoptimizer)
diff --git a/indra/cmake/LLMessage.cmake b/indra/cmake/LLMessage.cmake
deleted file mode 100644
index 7be53ec0ec3441a7534b27f70af158f88c69757d..0000000000000000000000000000000000000000
--- a/indra/cmake/LLMessage.cmake
+++ /dev/null
@@ -1,13 +0,0 @@
-# -*- cmake -*-
-
-include(CURL)
-include(OpenSSL)
-include(XmlRpcEpi)
-
-set(LLMESSAGE_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llmessage
-    ${CURL_INCLUDE_DIRS}
-    ${OPENSSL_INCLUDE_DIRS}
-    )
-
-set(LLMESSAGE_LIBRARIES llmessage)
diff --git a/indra/cmake/LLPhysicsExtensions.cmake b/indra/cmake/LLPhysicsExtensions.cmake
index 0d700bac4204caf03c308c6d70a304aa363f4336..41cf3ae94deedd837b12ab176fad8245b0e4c4f0 100644
--- a/indra/cmake/LLPhysicsExtensions.cmake
+++ b/indra/cmake/LLPhysicsExtensions.cmake
@@ -12,6 +12,9 @@ if (INSTALL_PROPRIETARY AND NOT LINUX)
    set(HAVOK_TPV ON CACHE BOOL "Use Havok physics library" FORCE)
 endif ()
 
+include_guard()
+add_library( llphysicsextensions_impl INTERFACE IMPORTED )
+
 
 # Note that the use_prebuilt_binary macros below do not in fact include binaries;
 # the llphysicsextensions_* packages are source only and are built here.
@@ -21,21 +24,21 @@ if (HAVOK)
    include(Havok)
    use_prebuilt_binary(llphysicsextensions_source)
    set(LLPHYSICSEXTENSIONS_SRC_DIR ${LIBS_PREBUILT_DIR}/llphysicsextensions/src)
-   set(LLPHYSICSEXTENSIONS_LIBRARIES    llphysicsextensions)
-   set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/llphysicsextensions) 
+   target_link_libraries( llphysicsextensions_impl INTERFACE llphysicsextensions)
+   target_include_directories( llphysicsextensions_impl INTERFACE   ${LIBS_PREBUILT_DIR}/include/llphysicsextensions)
 elseif (HAVOK_TPV)
    use_prebuilt_binary(llphysicsextensions_tpv)
    if(WINDOWS)
-      set(LLPHYSICSEXTENSIONS_LIBRARIES    ${ARCH_PREBUILT_DIRS}/llphysicsextensions_tpv.lib)
+      target_link_libraries( llphysicsextensions_impl INTERFACE    ${ARCH_PREBUILT_DIRS}/llphysicsextensions_tpv.lib)
    else()
-      set(LLPHYSICSEXTENSIONS_LIBRARIES    ${ARCH_PREBUILT_DIRS}/libllphysicsextensions_tpv.a)
+      target_link_libraries( llphysicsextensions_impl INTERFACE    ${ARCH_PREBUILT_DIRS}/libllphysicsextensions_tpv.a)
    endif()
-   set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/llphysicsextensions) 
+   target_include_directories( llphysicsextensions_impl INTERFACE   ${LIBS_PREBUILT_DIR}/include/llphysicsextensions)
 else (HAVOK)
   if (NOT USE_LL_STUBS)
      use_prebuilt_binary( ndPhysicsStub )
      if (WINDOWS)
-        set(LLPHYSICSEXTENSIONS_LIBRARIES 
+        target_link_libraries( llphysicsextensions_impl INTERFACE
            debug ${ARCH_PREBUILT_DIRS_DEBUG}/nd_hacdConvexDecomposition.lib
            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/nd_hacdConvexDecomposition.lib
            debug ${ARCH_PREBUILT_DIRS_DEBUG}/hacd.lib
@@ -43,13 +46,13 @@ else (HAVOK)
            debug ${ARCH_PREBUILT_DIRS_DEBUG}/nd_Pathing.lib
            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/nd_Pathing.lib)
      else ()
-        set(LLPHYSICSEXTENSIONS_LIBRARIES nd_hacdConvexDecomposition hacd nd_Pathing )
+        target_link_libraries( llphysicsextensions_impl INTERFACE nd_hacdConvexDecomposition hacd nd_Pathing )
      endif ()
-   set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/ )
+     target_include_directories( llphysicsextensions_impl INTERFACE   ${LIBS_PREBUILT_DIR}/include/)
   else()
    use_prebuilt_binary(llphysicsextensions_stub)
-   set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/llphysicsextensions) 
    set(LLPHYSICSEXTENSIONS_SRC_DIR ${LIBS_PREBUILT_DIR}/llphysicsextensions/stub)
-   set(LLPHYSICSEXTENSIONS_LIBRARIES    llphysicsextensionsstub)
+   target_link_libraries( llphysicsextensions_impl INTERFACE llphysicsextensionsstub)
+   target_include_directories( llphysicsextensions_impl INTERFACE   ${LIBS_PREBUILT_DIR}/include/llphysicsextensions)
   endif()
 endif ()
diff --git a/indra/cmake/LLPlugin.cmake b/indra/cmake/LLPlugin.cmake
deleted file mode 100644
index 399cb332dd4a3c911ab063d156f98fd22f16fbb8..0000000000000000000000000000000000000000
--- a/indra/cmake/LLPlugin.cmake
+++ /dev/null
@@ -1,14 +0,0 @@
-# -*- cmake -*-
-
-
-set(LLPLUGIN_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llplugin
-    )
-
-if (LINUX)
-    # In order to support using ld.gold on linux, we need to explicitely
-    # specify all libraries that llplugin uses.
-    set(LLPLUGIN_LIBRARIES llplugin pthread)
-else (LINUX)
-    set(LLPLUGIN_LIBRARIES llplugin)
-endif (LINUX)
diff --git a/indra/cmake/LLPrimitive.cmake b/indra/cmake/LLPrimitive.cmake
index 654cc0419ba05a8b2752ab6b17346c5af8bf5498..310753169cf126d7a943c7351d52b8eded35925d 100644
--- a/indra/cmake/LLPrimitive.cmake
+++ b/indra/cmake/LLPrimitive.cmake
@@ -1,55 +1,58 @@
 # -*- cmake -*-
 
 # these should be moved to their own cmake file
-include(Linking)
 include(Prebuilt)
 include(Boost)
 include(LibXML2)
 include(URIPARSER)
 include(ZLIBNG)
 
+include_guard()
+
+add_library( ll::pcre INTERFACE IMPORTED )
+add_library( ll::minizip-ng INTERFACE IMPORTED )
+add_library( ll::libxml INTERFACE IMPORTED )
+add_library( ll::colladadom INTERFACE IMPORTED )
+
+# ND, needs fixup in collada conan pkg
+if( USE_CONAN )
+  target_include_directories( ll::colladadom SYSTEM INTERFACE
+    "${CONAN_INCLUDE_DIRS_COLLADADOM}/collada-dom/" 
+    "${CONAN_INCLUDE_DIRS_COLLADADOM}/collada-dom/1.4/" )
+endif()
+
+use_system_binary( colladadom )
+
 use_prebuilt_binary(colladadom)
 use_prebuilt_binary(minizip-ng) # needed for colladadom
+use_prebuilt_binary(pcre)
+use_prebuilt_binary(libxml2)
+
+target_link_libraries( ll::pcre INTERFACE pcrecpp pcre )
+
+if (WINDOWS)
+    target_link_libraries( ll::minizip-ng INTERFACE libminizip )
+else()
+    target_link_libraries( ll::minizip-ng INTERFACE minizip )
+endif()
 
-set(LLPRIMITIVE_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llprimitive
-    )
 if (WINDOWS)
-    set(LLPRIMITIVE_LIBRARIES 
-        debug llprimitive
-        optimized llprimitive
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcollada14dom23-sd.lib
-        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcollada14dom23-s.lib
-        ${BOOST_FILESYSTEM_LIBRARY}
-        ${BOOST_SYSTEM_LIBRARIES}
-        ${LIBXML2_LIBRARIES}
-        ${URIPARSER_LIBRARIES}
-        ${MINIZIP_LIBRARIES}
-        ${ZLIBNG_LIBRARIES}
+    target_link_libraries( ll::libxml INTERFACE libxml2_a)
+else()
+    target_link_libraries( ll::libxml INTERFACE xml2)
+endif()
+
+target_include_directories( ll::colladadom SYSTEM INTERFACE
+        ${LIBS_PREBUILT_DIR}/include/collada
+        ${LIBS_PREBUILT_DIR}/include/collada/1.4
         )
+if (WINDOWS)
+    target_link_libraries(ll::colladadom INTERFACE 
+			  debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcollada14dom23-sd.lib
+			  optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcollada14dom23-s.lib
+			  ll::libxml ll::minizip-ng )
 elseif (DARWIN)
-    set(LLPRIMITIVE_LIBRARIES 
-        llprimitive
-        debug collada14dom-d
-        optimized collada14dom
-        ${BOOST_FILESYSTEM_LIBRARY}
-        ${BOOST_SYSTEM_LIBRARIES}
-        ${LIBXML2_LIBRARIES}
-        ${URIPARSER_LIBRARIES}
-        ${MINIZIP_LIBRARIES}
-        ${ZLIBNG_LIBRARIES}
-        )
+    target_link_libraries(ll::colladadom INTERFACE collada14dom ll::libxml ll::minizip-ng)
 elseif (LINUX)
-    set(LLPRIMITIVE_LIBRARIES 
-        llprimitive
-        debug collada14dom-d
-        optimized collada14dom
-        ${BOOST_FILESYSTEM_LIBRARY}
-        ${BOOST_SYSTEM_LIBRARIES}
-        ${LIBXML2_LIBRARIES}
-        ${URIPARSER_LIBRARIES}
-        ${MINIZIP_LIBRARIES}
-        ${ZLIBNG_LIBRARIES}
-        )
-endif (WINDOWS)
-
+    target_link_libraries(ll::colladadom INTERFACE collada14dom ll::libxml ll::minizip-ng)
+endif()
diff --git a/indra/cmake/LLRender.cmake b/indra/cmake/LLRender.cmake
deleted file mode 100644
index 4f53dd5cc163f0a55751d99c6ecefa690bd074e4..0000000000000000000000000000000000000000
--- a/indra/cmake/LLRender.cmake
+++ /dev/null
@@ -1,18 +0,0 @@
-# -*- cmake -*-
-
-include(Variables)
-include(FreeType)
-
-set(LLRENDER_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llrender
-    )
-
-if (BUILD_HEADLESS)
-  set(LLRENDER_HEADLESS_LIBRARIES
-      llrenderheadless
-      )
-endif (BUILD_HEADLESS)
-set(LLRENDER_LIBRARIES
-    llrender
-    )
-
diff --git a/indra/cmake/LLSharedLibs.cmake b/indra/cmake/LLSharedLibs.cmake
index 56412f81228ec8004831b6262d9ce6ec33e72635..54b19e9ee59a2d6d06f62e222f627643e7bce9fb 100644
--- a/indra/cmake/LLSharedLibs.cmake
+++ b/indra/cmake/LLSharedLibs.cmake
@@ -44,32 +44,3 @@ macro(ll_deploy_sharedlibs_command target_exe)
   endif(NOT DARWIN)
 
 endmacro(ll_deploy_sharedlibs_command)
-
-# ll_stage_sharedlib
-# Performs config and adds a copy command for a sharedlib target.
-macro(ll_stage_sharedlib DSO_TARGET)
-  # target gets written to the DLL staging directory.
-  # Also this directory is shared with RunBuildTest.cmake, y'know, for the tests.
-  set_target_properties(${DSO_TARGET} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${SHARED_LIB_STAGING_DIR})
-  if(NOT WINDOWS)
-    get_target_property(DSO_PATH ${DSO_TARGET} LOCATION)
-    get_filename_component(DSO_FILE ${DSO_PATH} NAME)
-    if(DARWIN)
-      set(SHARED_LIB_STAGING_DIR_CONFIG ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/Resources)
-    else(DARWIN)
-      set(SHARED_LIB_STAGING_DIR_CONFIG ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR})
-    endif(DARWIN)
-
-      # *TODO - maybe make this a symbolic link? -brad
-      add_custom_command(
-        TARGET ${DSO_TARGET} POST_BUILD
-        COMMAND ${CMAKE_COMMAND}
-        ARGS
-          -E
-          copy_if_different
-          ${DSO_PATH}
-          ${SHARED_LIB_STAGING_DIR_CONFIG}/${DSO_FILE}
-          COMMENT "Copying llcommon to the staging folder."
-        )
-    endif(NOT WINDOWS)
-endmacro(ll_stage_sharedlib)
diff --git a/indra/cmake/LLUI.cmake b/indra/cmake/LLUI.cmake
deleted file mode 100644
index 34de57108b787ff468f77ebae346030a49d7ff83..0000000000000000000000000000000000000000
--- a/indra/cmake/LLUI.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- cmake -*-
-
-set(LLUI_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llui
-    )
-
-set(LLUI_LIBRARIES llui)
diff --git a/indra/cmake/LLWindow.cmake b/indra/cmake/LLWindow.cmake
index 20daeb87e226e824ed2750fa34a7df645d6e0e7f..b2c1792df1c5f32622cf6f1d0881d94930cd7eaf 100644
--- a/indra/cmake/LLWindow.cmake
+++ b/indra/cmake/LLWindow.cmake
@@ -2,20 +2,7 @@
 
 include(Variables)
 include(GLEXT)
+include(Prebuilt)
 include(SDL2)
 
-set(LLWINDOW_INCLUDE_DIRS
-    ${GLEXT_INCLUDE_DIR}
-    ${SDL_INCLUDE_DIRS}
-    ${LIBS_OPEN_DIR}/llwindow
-    )
-
-if (BUILD_HEADLESS)
-  set(LLWINDOW_HEADLESS_LIBRARIES
-      llwindowheadless
-      )
-endif (BUILD_HEADLESS)
-
-  set(LLWINDOW_LIBRARIES
-      llwindow
-      )
+include_guard()
diff --git a/indra/cmake/LLXML.cmake b/indra/cmake/LLXML.cmake
deleted file mode 100644
index b093c762975efc4771464bc6e6efcadf28faff7f..0000000000000000000000000000000000000000
--- a/indra/cmake/LLXML.cmake
+++ /dev/null
@@ -1,14 +0,0 @@
-# -*- cmake -*-
-
-include(Boost)
-include(EXPAT)
-
-set(LLXML_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/llxml
-    ${EXPAT_INCLUDE_DIRS}
-    )
-set(LLXML_SYSTEM_INCLUDE_DIRS
-    ${Boost_INCLUDE_DIRS}
-    )
-
-set(LLXML_LIBRARIES llxml)
diff --git a/indra/cmake/LibVLCPlugin.cmake b/indra/cmake/LibVLCPlugin.cmake
index 199dfab02776c1b30f9d7a13204ee4313173ee73..ae6bbdecdf2d86849e3a8981ade68a337bf9cb67 100644
--- a/indra/cmake/LibVLCPlugin.cmake
+++ b/indra/cmake/LibVLCPlugin.cmake
@@ -2,31 +2,28 @@
 include(Linking)
 include(Prebuilt)
 
-if (USESYSTEMLIBS OR LINUX)
-    include(FindPkgConfig)
+include_guard()
+add_library( ll::libvlc INTERFACE IMPORTED )
 
-    pkg_check_modules(VLC REQUIRED libvlc)
-else ()
-    include(Prebuilt)
 
-    use_prebuilt_binary(vlc-bin)
-    set(VLC_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/vlc)
+use_prebuilt_binary(vlc-bin)
+target_include_directories( ll::libvlc INTERFACE ${LIBS_PREBUILT_DIR}/include/vlc)
 
-    if (WINDOWS)
-        set(VLC_LIBRARIES
-                ${ARCH_PREBUILT_DIRS_RELEASE}/libvlc.lib
-                ${ARCH_PREBUILT_DIRS_RELEASE}/libvlccore.lib
-                )
-    elseif (DARWIN)
-        set(VLC_LIBRARIES
-                libvlc.dylib
-                libvlccore.dylib
-                )
-    elseif (LINUX)
-        # Specify a full path to make sure we get a static link
-        set(VLC_LIBRARIES
-                ${LIBS_PREBUILT_DIR}/lib/libvlc.a
-                ${LIBS_PREBUILT_DIR}/lib/libvlccore.a
-                )
-    endif (WINDOWS)
+if (WINDOWS)
+    target_link_libraries( ll::libvlc INTERFACE
+            ${ARCH_PREBUILT_DIRS_RELEASE}/libvlc.lib
+            ${ARCH_PREBUILT_DIRS_RELEASE}/libvlccore.lib
+    )
+elseif (DARWIN)
+    target_link_libraries( ll::libvlc INTERFACE
+            libvlc.dylib
+            libvlccore.dylib
+    )
+elseif (LINUX)
+# Specify a full path to make sure we get a static link
+    target_link_libraries( ll::libvlc INTERFACE
+            ${LIBS_PREBUILT_DIR}/lib/libvlc.a
+            ${LIBS_PREBUILT_DIR}/lib/libvlccore.a
+    )
+endif (WINDOWS)
 endif ()
diff --git a/indra/cmake/Linking.cmake b/indra/cmake/Linking.cmake
index 35a6fc77706bbf8e646b03f5ec4a8c87ba622d27..c0a0b5d5820339c3e174bd39e7adc6f54cb215c7 100644
--- a/indra/cmake/Linking.cmake
+++ b/indra/cmake/Linking.cmake
@@ -1,8 +1,6 @@
 # -*- cmake -*-
 
-if(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
-set(${CMAKE_CURRENT_LIST_FILE}_INCLUDED "YES")
-
+include_guard()
 include(Variables)
 
 set(ARCH_PREBUILT_DIRS ${AUTOBUILD_INSTALL_DIR}/lib)
@@ -12,18 +10,29 @@ set(ARCH_PREBUILT_DIRS_DEBUG ${AUTOBUILD_INSTALL_DIR}/lib/debug)
 set(ARCH_PREBUILT_BIN_DIRS ${AUTOBUILD_INSTALL_DIR}/bin)
 set(ARCH_PREBUILT_BIN_DIRS_RELEASE ${AUTOBUILD_INSTALL_DIR}/bin/release)
 set(ARCH_PREBUILT_BIN_DIRS_DEBUG ${AUTOBUILD_INSTALL_DIR}/bin/debug)
-if (WINDOWS)
-  set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs)
-  set(EXE_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs)
+if (WINDOWS OR DARWIN )
+  # Kludge for older cmake versions, 3.20+ is needed to use a genex in add_custom_command( OUTPUT <var> ... )
+  # Using this will work okay-ish, as Debug is not supported anyway. But for property multi config and also
+  # ninja support the genex version is preferred.
+  if(${CMAKE_VERSION} VERSION_LESS "3.20.0")  
+    if(CMAKE_BUILD_TYPE MATCHES Release)
+      set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/Release)
+    elseif (CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
+      set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/RelWithDebInfo)
+    endif()
+  else()
+    set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>)
+  endif()
+
+  if( DARWIN )
+    set( SHARED_LIB_STAGING_DIR ${SHARED_LIB_STAGING_DIR}/Resources)
+  endif()
+  set(EXE_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>)
 elseif (LINUX)
   set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/lib)
   set(EXE_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/bin)
-elseif (DARWIN)
-  set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs)
-  set(EXE_STAGING_DIR "${CMAKE_BINARY_DIR}/sharedlibs")
-endif (WINDOWS)
+endif ()
 
-if (NOT WINDOWS)
 # Autobuild packages must provide 'release' versions of libraries, but may provide versions for
 # specific build types.  AUTOBUILD_LIBS_INSTALL_DIRS lists first the build type directory and then
 # the 'release' directory (as a default fallback).
@@ -31,70 +40,67 @@ if (NOT WINDOWS)
 # windows) and CMAKE_BUILD_TYPE on Makefile based generators (like linux).  The reason for this is
 # that CMAKE_BUILD_TYPE is essentially meaningless at configuration time for IDE generators and
 # CMAKE_CFG_INTDIR is meaningless at build time for Makefile generators
-if(WINDOWS OR DARWIN)
-  # the cmake xcode and VS generators implicitly append ${CMAKE_CFG_INTDIR} to the library paths for us
-  # fortunately both windows and darwin are case insensitive filesystems so this works.
-  set(AUTOBUILD_LIBS_INSTALL_DIRS "${AUTOBUILD_INSTALL_DIR}/lib/")
-else(WINDOWS OR DARWIN)
-  # else block is for linux and any other makefile based generators
-  string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)
-  set(AUTOBUILD_LIBS_INSTALL_DIRS ${AUTOBUILD_INSTALL_DIR}/lib/${CMAKE_BUILD_TYPE_LOWER})
-endif(WINDOWS OR DARWIN)
 
-if (NOT "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
-  # When we're building something other than Release, append the
-  # packages/lib/release directory to deal with autobuild packages that don't
-  # provide (e.g.) lib/debug libraries.
-  list(APPEND AUTOBUILD_LIBS_INSTALL_DIRS ${ARCH_PREBUILT_DIRS_RELEASE})
-endif (NOT "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
+link_directories(${AUTOBUILD_INSTALL_DIR}/lib/$<LOWER_CASE:$<CONFIG>>)
+link_directories(${AUTOBUILD_INSTALL_DIR}/lib/release)
 
-link_directories(${AUTOBUILD_LIBS_INSTALL_DIRS})
-endif()
+add_library( ll::oslibraries INTERFACE IMPORTED )
 
 if (LINUX)
-  set(DL_LIBRARY dl)
-  set(RT_LIBRARY rt)
-  set(PTHREAD_LIBRARY pthread)
-else (LINUX)
-  set(DL_LIBRARY "")
-  set(RT_LIBRARY "")
-  set(PTHREAD_LIBRARY "")
-endif (LINUX)
-
-if (WINDOWS)
-  set(WINDOWS_LIBRARIES
-      advapi32
-      shell32
-      ws2_32
-      mswsock
-      psapi
-      winmm
-      wldap32
-      gdi32
-      user32
-      ole32
-      dbghelp
-      )
+  target_link_libraries( ll::oslibraries INTERFACE
+          dl
+          pthread
+          rt)
+elseif (WINDOWS)
+  target_link_libraries( ll::oslibraries INTERFACE
+          advapi32
+          shell32
+          ws2_32
+          mswsock
+          psapi
+          winmm
+          netapi32
+          wldap32
+          gdi32
+          user32
+          ole32
+          dbghelp
+          )
 
   if(ASAN)
     if(ADDRESS_SIZE EQUAL 32)
-      set(WINDOWS_LIBRARIES
-          ${WINDOWS_LIBRARIES}
+      target_link_libraries( ll::oslibraries INTERFACE
           clang_rt.asan_dynamic_runtime_thunk-i386
           clang_rt.asan_dynamic-i386
           )
     else(ADDRESS_SIZE EQUAL 32)
-      set(WINDOWS_LIBRARIES
-          ${WINDOWS_LIBRARIES}
+      target_link_libraries( ll::oslibraries INTERFACE
           clang_rt.asan_dynamic_runtime_thunk-x86_64
           clang_rt.asan_dynamic-x86_64
           )
     endif(ADDRESS_SIZE EQUAL 32)
   endif(ASAN)
-else (WINDOWS)
-  set(WINDOWS_LIBRARIES "")
-endif (WINDOWS)
-    
-mark_as_advanced(DL_LIBRARY RT_LIBRARY PTHREAD_LIBRARY WINDOWS_LIBRARIES)
+else()
+  include(CMakeFindFrameworks)
+  find_library(COREFOUNDATION_LIBRARY CoreFoundation)
+  find_library(CARBON_LIBRARY Carbon)
+  find_library(COCOA_LIBRARY Cocoa)
+  find_library(IOKIT_LIBRARY IOKit)
+
+  find_library(AGL_LIBRARY AGL)
+  find_library(APPKIT_LIBRARY AppKit)
+  find_library(COREAUDIO_LIBRARY CoreAudio)
+
+  target_link_libraries( ll::oslibraries INTERFACE
+          ${COCOA_LIBRARY}
+          ${IOKIT_LIBRARY}
+          ${COREFOUNDATION_LIBRARY}
+          ${CARBON_LIBRARY}
+          ${AGL_LIBRARY}
+          ${APPKIT_LIBRARY}
+          ${COREAUDIO_LIBRARY}
+          )
+endif()
+
+
 
-endif(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
diff --git a/indra/cmake/MESHOPTIMIZER.cmake b/indra/cmake/MESHOPTIMIZER.cmake
deleted file mode 100644
index c69f8a872be493a3eff60a7df059b3b8bb0fc0c2..0000000000000000000000000000000000000000
--- a/indra/cmake/MESHOPTIMIZER.cmake
+++ /dev/null
@@ -1,16 +0,0 @@
-# -*- cmake -*-
-
-# include(Linking)
-# include(Prebuilt)
-
-# use_prebuilt_binary(meshoptimizer)
-
-# if (WINDOWS)
-#   set(MESHOPTIMIZER_LIBRARIES meshoptimizer.lib)
-# elseif (LINUX)
-#   set(MESHOPTIMIZER_LIBRARIES meshoptimizer.o)
-# elseif (DARWIN)
-#   set(MESHOPTIMIZER_LIBRARIES libmeshoptimizer.a)
-# endif (WINDOWS)
-
-# set(MESHOPTIMIZER_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/meshoptimizer)
diff --git a/indra/cmake/MediaPluginBase.cmake b/indra/cmake/MediaPluginBase.cmake
deleted file mode 100644
index 2be035b641450bd3a7b16adfd205b77685a1a2f0..0000000000000000000000000000000000000000
--- a/indra/cmake/MediaPluginBase.cmake
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- cmake -*-
-
-
-set(MEDIA_PLUGIN_BASE_INCLUDE_DIRS
-    ${LIBS_OPEN_DIR}/media_plugins/base/
-    )
-
-set(MEDIA_PLUGIN_BASE_LIBRARIES media_plugin_base)
diff --git a/indra/cmake/NDOF.cmake b/indra/cmake/NDOF.cmake
index ecce6fbfac22600e45a9928b01e856afeedfe791..e68aae2d7d6ad6fef92d044b1d730c36fc9dbce1 100644
--- a/indra/cmake/NDOF.cmake
+++ b/indra/cmake/NDOF.cmake
@@ -3,36 +3,24 @@ include(Prebuilt)
 
 set(NDOF ON CACHE BOOL "Use NDOF space navigator joystick library.")
 
+include_guard()
+add_library( ll::ndof INTERFACE IMPORTED )
+
 if (NDOF)
-  if (USESYSTEMLIBS)
-    set(NDOF_FIND_REQUIRED ON)
-    include(FindNDOF)
-  else (USESYSTEMLIBS)
-    if (WINDOWS OR DARWIN)
-      use_prebuilt_binary(libndofdev)
-    elseif (LINUX)
-      use_prebuilt_binary(open-libndofdev)
-    endif (WINDOWS OR DARWIN)
+  if (WINDOWS OR DARWIN)
+    use_prebuilt_binary(libndofdev)
+  elseif (LINUX)
+    use_prebuilt_binary(open-libndofdev)
+  endif (WINDOWS OR DARWIN)
 
-    if (WINDOWS)
-      set(NDOF_LIBRARY
+  if (WINDOWS)
+      target_link_libraries( ll::ndof INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libndofdev.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libndofdev.lib)
-    elseif (DARWIN OR LINUX)
-      set(NDOF_LIBRARY ndofdev)
-    endif (WINDOWS)
-
-    set(NDOF_INCLUDE_DIR ${ARCH_PREBUILT_DIRS}/include/ndofdev)
-    set(NDOF_FOUND 1)
-  endif (USESYSTEMLIBS)
+  elseif (DARWIN OR LINUX)
+    target_link_libraries( ll::ndof INTERFACE ndofdev)
+  endif (WINDOWS)
+  target_compile_definitions( ll::ndof INTERFACE LIB_NDOF=1)
 endif (NDOF)
 
-if (NDOF_FOUND)
-  add_definitions(-DLIB_NDOF=1)
-  include_directories(${NDOF_INCLUDE_DIR})
-else (NDOF_FOUND)
-  message(STATUS "Building without N-DoF joystick support")
-  set(NDOF_INCLUDE_DIR "")
-  set(NDOF_LIBRARY "")
-endif (NDOF_FOUND)
 
diff --git a/indra/cmake/NGHTTP2.cmake b/indra/cmake/NGHTTP2.cmake
index 321b969878e201ac6ecb24eeeda253477550da09..3d0279d210fb930913df61b0efdfa7eb7bf51978 100644
--- a/indra/cmake/NGHTTP2.cmake
+++ b/indra/cmake/NGHTTP2.cmake
@@ -1,22 +1,19 @@
-include(Prebuilt)
 include(Linking)
+include(Prebuilt)
 
-set(NGHTTP2_FIND_QUIETLY ON)
-set(NGHTTP2_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::nghttp2 INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindNGHTTP2)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(nghttp2)
-  if (WINDOWS)
-    set(NGHTTP2_LIBRARIES 
+use_system_binary(nghttp2)
+use_prebuilt_binary(nghttp2)
+if (WINDOWS)
+  target_link_libraries( ll::nghttp2 INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/nghttp2.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/nghttp2.lib
-      )
-  elseif (DARWIN)
-    set(NGHTTP2_LIBRARIES libnghttp2.a)
-  else (WINDOWS)
-    set(NGHTTP2_LIBRARIES libnghttp2.a)
-  endif (WINDOWS)
-  set(NGHTTP2_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/nghttp2)
-endif (USESYSTEMLIBS)
+  )
+elseif (DARWIN)
+  target_link_libraries( ll::nghttp2 INTERFACE libnghttp2.a)
+else (WINDOWS)
+  target_link_libraries( ll::nghttp2 INTERFACE libnghttp2.a )
+endif (WINDOWS)
+target_include_directories( ll::nghttp2 SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/nghttp2)
diff --git a/indra/cmake/NVAPI.cmake b/indra/cmake/NVAPI.cmake
index 660af3201b9b8cfec151d3fb01a07b669eb5ec1d..22a2ef4beaf626c51e37ec286687a895e418d986 100644
--- a/indra/cmake/NVAPI.cmake
+++ b/indra/cmake/NVAPI.cmake
@@ -9,16 +9,13 @@ endif (INSTALL_PROPRIETARY)
 
 if (USE_NVAPI)
   if (WINDOWS)
+    add_library( ll::nvapi INTERFACE IMPORTED )
     use_prebuilt_binary(nvapi)
     if (ADDRESS_SIZE EQUAL 32)
-      set(NVAPI_LIBRARY ${ARCH_PREBUILT_DIRS_RELEASE}/nvapi.lib)
+      target_link_libraries( ll::nvapi INTERFACE ${ARCH_PREBUILT_DIRS_RELEASE}/nvapi.lib)
     elseif (ADDRESS_SIZE EQUAL 64)
-      set(NVAPI_LIBRARY ${ARCH_PREBUILT_DIRS_RELEASE}/nvapi64.lib)
+      target_link_libraries( ll::nvapi INTERFACE ${ARCH_PREBUILT_DIRS_RELEASE}/nvapi64.lib)
     endif (ADDRESS_SIZE EQUAL 32)	
-  else (WINDOWS)
-    set(NVAPI_LIBRARY "")
   endif (WINDOWS)
-else (USE_NVAPI)
-  set(NVAPI_LIBRARY "")
 endif (USE_NVAPI)
 
diff --git a/indra/cmake/OPENAL.cmake b/indra/cmake/OPENAL.cmake
index dcf28e845bf8e5a7854cc27c7ac535b30af8fbe2..6df74dc812f236f1c6a07d570bcd38d2c0fa363b 100644
--- a/indra/cmake/OPENAL.cmake
+++ b/indra/cmake/OPENAL.cmake
@@ -2,31 +2,46 @@
 include(Linking)
 include(Prebuilt)
 
-option(USE_OPENAL "Enable OpenAL" ON)
+include_guard()
+
+# ND: Turn this off by default, the openal code in the viewer isn't very well maintained, seems
+# to have memory leaks, has no option to play music streams
+# It probably makes sense to to completely remove it
+
+set(USE_OPENAL OFF CACHE BOOL "Enable OpenAL")
+# ND: To streamline arguments passed, switch from OPENAL to USE_OPENAL
+# To not break all old build scripts convert old arguments but warn about it
+if(OPENAL)
+  message( WARNING "Use of the OPENAL argument is deprecated, please switch to USE_OPENAL")
+  set(USE_OPENAL ${OPENAL})
+endif()
+
 if (USE_OPENAL)
-  if (USESYSTEMLIBS)
-    pkg_check_modules(FREEALUT REQUIRED freealut)
-    pkg_check_modules(OPENAL REQUIRED openal)
-  else (USESYSTEMLIBS)
-    use_prebuilt_binary(openal)
-    if(WINDOWS)
-      set(OPENAL_LIBRARIES
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/OpenAL32.lib
-        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/OpenAL32.lib)
-      set(FREEALUT_LIBRARIES
-          debug ${ARCH_PREBUILT_DIRS_DEBUG}/alut.lib
-          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/alut.lib)
-    elseif (DARWIN)
-      set(OPENAL_LIBRARIES
-        debug ${ARCH_PREBUILT_DIRS_DEBUG}/libopenal.dylib
-        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libopenal.dylib)
-      set(FREEALUT_LIBRARIES
-          debug ${ARCH_PREBUILT_DIRS_DEBUG}/libalut.dylib
-          optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libalut.dylib)
-    else()
-      set(OPENAL_LIBRARIES openal)
-      set(FREEALUT_LIBRARIES alut)
-    endif()
-    set(OPENAL_INCLUDE_DIRS "${LIBS_PREBUILT_DIR}/include/")
-  endif (USESYSTEMLIBS)
-endif (USE_OPENAL)
+  add_library( ll::openal INTERFACE IMPORTED )
+  target_include_directories( ll::openal SYSTEM INTERFACE "${LIBS_PREBUILT_DIR}/include/")
+  target_compile_definitions( ll::openal INTERFACE LL_OPENAL=1)
+  use_prebuilt_binary(openal)
+
+  if(WINDOWS)
+    target_link_libraries( ll::openal INTERFACE
+            debug ${ARCH_PREBUILT_DIRS_DEBUG}/OpenAL32.lib
+            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/OpenAL32.lib
+            debug ${ARCH_PREBUILT_DIRS_DEBUG}/alut.lib
+            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/alut.lib
+	    )
+  elseif (DARWIN)
+    target_link_libraries( ll::openal INTERFACE
+            debug ${ARCH_PREBUILT_DIRS_DEBUG}/libopenal.dylib
+            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libopenal.dylib
+            debug ${ARCH_PREBUILT_DIRS_DEBUG}/libalut.dylib
+            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libalut.dylib
+	    )
+  elseif (LINUX)
+    target_link_libraries( ll::openal INTERFACE
+            openal
+            alut
+            )
+  else()
+    message(FATAL_ERROR "OpenAL is not available for this platform")
+  endif()
+endif ()
diff --git a/indra/cmake/OpenGL.cmake b/indra/cmake/OpenGL.cmake
index 2259c992935ff42dbbf46eb4105467a7ec7584d8..bf7cd8366a98aa18073715469fa0e06d41e271f1 100644
--- a/indra/cmake/OpenGL.cmake
+++ b/indra/cmake/OpenGL.cmake
@@ -2,11 +2,5 @@
 
 include(Variables)
 include(Prebuilt)
-
-if (BUILD_HEADLESS)
-  SET(OPENGL_glu_LIBRARY GLU)
-  SET(OPENGL_HEADLESS_LIBRARIES OSMesa16 dl GLU)
-endif (BUILD_HEADLESS)
-
 include(FindOpenGL)
 
diff --git a/indra/cmake/OpenJPEG.cmake b/indra/cmake/OpenJPEG.cmake
index e54683d6b4f0c31a9dc2d3e1a3798e4aefbd341e..32739d5786de349b03e602cd7e38ec4ed77b01c5 100644
--- a/indra/cmake/OpenJPEG.cmake
+++ b/indra/cmake/OpenJPEG.cmake
@@ -1,21 +1,17 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-set(OPENJPEG_FIND_QUIETLY ON)
-set(OPENJPEG_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::openjpeg INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindOpenJPEG)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(openjpeg)
-  
-  if(WINDOWS)
-    set(OPENJPEG_LIBRARIES
+use_system_binary(openjpeg)
+use_prebuilt_binary(openjpeg)
+
+if(WINDOWS)
+  target_link_libraries(ll::openjpeg INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/openjp2.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/openjp2.lib)
-  else(WINDOWS)
-    set(OPENJPEG_LIBRARIES openjp2)
-  endif(WINDOWS)
-  
-    set(OPENJPEG_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/openjpeg)
-endif (USESYSTEMLIBS)
+else ()
+  target_link_libraries(ll::openjpeg INTERFACE openjp2 )
+endif ()
+target_include_directories( ll::openjpeg SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/openjpeg)
diff --git a/indra/cmake/OpenSSL.cmake b/indra/cmake/OpenSSL.cmake
index b7c6c5b8c6d4a4b66c98c0c051de95789fe68e1a..b0840a356367f342af03cfde05245436c617d0b4 100644
--- a/indra/cmake/OpenSSL.cmake
+++ b/indra/cmake/OpenSSL.cmake
@@ -1,30 +1,23 @@
 # -*- cmake -*-
 include(Prebuilt)
-include(Linking)
 
-set(OpenSSL_FIND_QUIETLY ON)
-set(OpenSSL_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::openssl INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindOpenSSL)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(openssl)
-  if (WINDOWS)
-    set(SSL_LIBRARY
+use_system_binary(openssl)
+use_prebuilt_binary(openssl)
+if (WINDOWS)
+  target_link_libraries(ll::openssl INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libssl.lib
-        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libssl.lib)
-    set(CRYPTO_LIBRARY
+        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libssl.lib
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libcrypto.lib
-        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcrypto.lib)
-    set(OPENSSL_LIBRARIES ${SSL_LIBRARY} ${CRYPTO_LIBRARY} Crypt32.lib)
-  else (WINDOWS)
-    set(OPENSSL_LIBRARIES ssl crypto)
-  endif (WINDOWS)
-  set(OPENSSL_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-endif (USESYSTEMLIBS)
+        optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libcrypto.lib
+        Crypt32.lib
+  )
+elseif (LINUX)
+  target_link_libraries(ll::openssl INTERFACE ssl crypto dl)
+else()
+  target_link_libraries(ll::openssl INTERFACE ssl crypto)
+endif (WINDOWS)
+target_include_directories( ll::openssl SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
 
-if (LINUX)
-  set(CRYPTO_LIBRARIES crypto dl)
-elseif (DARWIN)
-  set(CRYPTO_LIBRARIES crypto)
-endif (LINUX)
diff --git a/indra/cmake/PNG.cmake b/indra/cmake/PNG.cmake
index 4f86ee8a34f6bef62c84121dfeb64dab180a1c2d..4c245d2153d28345d9dbbb0aaabd93465c12ba35 100644
--- a/indra/cmake/PNG.cmake
+++ b/indra/cmake/PNG.cmake
@@ -2,37 +2,17 @@
 include(Linking)
 include(Prebuilt)
 
-set(PNG_FIND_QUIETLY ON)
-set(PNG_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::libpng INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindPNG)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(libpng)
-  if (WINDOWS)
-    set(PNG_LIBRARIES
+use_system_binary(libpng)
+use_prebuilt_binary(libpng)
+if (WINDOWS)
+  target_link_libraries(ll::libpng INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/libpng16d.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libpng16.lib
         )
-    set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
-  elseif(DARWIN)
-    set(PNG_LIBRARIES png16)
-    set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
-  else()
-    #
-    # When we have updated static libraries in competition with older
-    # shared libraries and we want the former to win, we need to do some
-    # extra work.  The *_PRELOAD_ARCHIVES settings are invoked early
-    # and will pull in the entire archive to the binary giving it 
-    # priority in symbol resolution.  Beware of cmake moving the
-    # achive load itself to another place on the link command line.  If
-    # that happens, you can try something like -Wl,-lpng16 here to hide
-    # the archive.  Also be aware that the linker will not tolerate a
-    # second whole-archive load of the archive.  See viewer's
-    # CMakeLists.txt for more information.
-    #
-    set(PNG_PRELOAD_ARCHIVES -Wl,--whole-archive png16 -Wl,--no-whole-archive)
-    set(PNG_LIBRARIES png16)
-    set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
-  endif()
-endif (USESYSTEMLIBS)
+else()
+  target_link_libraries(ll::libpng INTERFACE png16 )
+endif()
+target_include_directories( ll::libpng SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/libpng16)
diff --git a/indra/cmake/PluginAPI.cmake b/indra/cmake/PluginAPI.cmake
index 879c8536e4a6591519ffeb674e908becd454087f..b30399cb1ccda89c31c730010d6acfc93ccb4383 100644
--- a/indra/cmake/PluginAPI.cmake
+++ b/indra/cmake/PluginAPI.cmake
@@ -1,15 +1,15 @@
 # -*- cmake -*-
 
+add_library( ll::pluginlibraries INTERFACE IMPORTED )
+
 if (WINDOWS)
-  set(PLUGIN_API_WINDOWS_LIBRARIES
+  target_link_libraries( ll::pluginlibraries INTERFACE
       wsock32
       ws2_32
       psapi
       advapi32
       user32
       )
-else (WINDOWS)
-  set(PLUGIN_API_WINDOWS_LIBRARIES "")
 endif (WINDOWS)
 
 
diff --git a/indra/cmake/Prebuilt.cmake b/indra/cmake/Prebuilt.cmake
index c6ad7a2a99c254d2895c3b6099e7f60f5e0babc6..b6a7c6a8ca6995cd9c80e871affde1c8b1d5a3d0 100644
--- a/indra/cmake/Prebuilt.cmake
+++ b/indra/cmake/Prebuilt.cmake
@@ -1,7 +1,5 @@
 # -*- cmake -*-
-
-if(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
-set(${CMAKE_CURRENT_LIST_FILE}_INCLUDED "YES")
+include_guard()
 
 include(FindAutobuild)
 
@@ -22,42 +20,52 @@ endif ("${CMAKE_SOURCE_DIR}/../autobuild.xml" IS_NEWER_THAN "${PREBUILD_TRACKING
 # of previous attempts is serialized in the file
 # ${PREBUILD_TRACKING_DIR}/${_binary}_installed)
 macro (use_prebuilt_binary _binary)
-  if (NOT DEFINED USESYSTEMLIBS_${_binary})
-    set(USESYSTEMLIBS_${_binary} ${USESYSTEMLIBS})
-  endif (NOT DEFINED USESYSTEMLIBS_${_binary})
+    if( NOT DEFINED ${_binary}_installed )
+        set( ${_binary}_installed "")
+    endif()
 
-  if (NOT USESYSTEMLIBS_${_binary})
     if("${${_binary}_installed}" STREQUAL "" AND EXISTS "${PREBUILD_TRACKING_DIR}/${_binary}_installed")
-      file(READ ${PREBUILD_TRACKING_DIR}/${_binary}_installed "${_binary}_installed")
-      if(DEBUG_PREBUILT)
-        message(STATUS "${_binary}_installed: \"${${_binary}_installed}\"")
-      endif(DEBUG_PREBUILT)
+        file(READ ${PREBUILD_TRACKING_DIR}/${_binary}_installed "${_binary}_installed")
+        if(DEBUG_PREBUILT)
+            message(STATUS "${_binary}_installed: \"${${_binary}_installed}\"")
+        endif(DEBUG_PREBUILT)
     endif("${${_binary}_installed}" STREQUAL "" AND EXISTS "${PREBUILD_TRACKING_DIR}/${_binary}_installed")
 
     if(${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/${_binary}_installed OR NOT ${${_binary}_installed} EQUAL 0)
-      if(DEBUG_PREBUILT)
-        message(STATUS "cd ${CMAKE_SOURCE_DIR} && ${AUTOBUILD_EXECUTABLE} install
+        if(DEBUG_PREBUILT)
+            message(STATUS "cd ${CMAKE_SOURCE_DIR} && ${AUTOBUILD_EXECUTABLE} install
         --install-dir=${AUTOBUILD_INSTALL_DIR}
         ${_binary} ")
-      endif(DEBUG_PREBUILT)
-      execute_process(COMMAND "${AUTOBUILD_EXECUTABLE}"
-        install
-        -A${ADDRESS_SIZE}
-        --skip-source-environment
-        --install-dir=${AUTOBUILD_INSTALL_DIR}
-        ${_binary}
-        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
-        RESULT_VARIABLE ${_binary}_installed
-        )
-      file(WRITE ${PREBUILD_TRACKING_DIR}/${_binary}_installed "${${_binary}_installed}")
+        endif(DEBUG_PREBUILT)
+        execute_process(COMMAND "${AUTOBUILD_EXECUTABLE}"
+                install
+                -A${ADDRESS_SIZE}
+                --skip-source-environment
+                --install-dir=${AUTOBUILD_INSTALL_DIR}
+                ${_binary}
+                WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+                RESULT_VARIABLE ${_binary}_installed
+                )
+        file(WRITE ${PREBUILD_TRACKING_DIR}/${_binary}_installed "${${_binary}_installed}")
     endif(${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/${_binary}_installed OR NOT ${${_binary}_installed} EQUAL 0)
 
     if(NOT ${_binary}_installed EQUAL 0)
-      message(FATAL_ERROR
-              "Failed to download or unpack prebuilt '${_binary}'."
-              " Process returned ${${_binary}_installed}.")
+        message(FATAL_ERROR
+                "Failed to download or unpack prebuilt '${_binary}'."
+                " Process returned ${${_binary}_installed}.")
     endif (NOT ${_binary}_installed EQUAL 0)
-  endif (NOT USESYSTEMLIBS_${_binary})
 endmacro (use_prebuilt_binary _binary)
 
-endif(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
+#Sadly we need a macro here, otherwise the return() will not properly work
+macro ( use_system_binary package )
+  if( USE_CONAN )
+    target_link_libraries( ll::${package} INTERFACE CONAN_PKG::${package} )
+    foreach( extra_pkg "${ARGN}" )
+      if( extra_pkg )
+        target_link_libraries( ll::${package} INTERFACE CONAN_PKG::${extra_pkg} )
+      endif()
+    endforeach()
+    return()
+  endif()
+endmacro()
+
diff --git a/indra/cmake/PulseAudio.cmake b/indra/cmake/PulseAudio.cmake
index cce27f1bdd12afb10e018f9d530d93512fd92126..303db97db6c7967ec52f80283208ea961abb3009 100644
--- a/indra/cmake/PulseAudio.cmake
+++ b/indra/cmake/PulseAudio.cmake
@@ -1,28 +1,4 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-set(PULSEAUDIO OFF CACHE BOOL "Build with PulseAudio support, if available.")
-
-if (PULSEAUDIO)
-  if (USESYSTEMLIBS)
-    include(FindPkgConfig)
-
-    pkg_check_modules(PULSEAUDIO libpulse)
-
-  elseif (LINUX)
-    use_prebuilt_binary(pulseaudio)
-    set(PULSEAUDIO_FOUND ON FORCE BOOL)
-    set(PULSEAUDIO_INCLUDE_DIRS
-        ${LIBS_PREBUILT_DIR}/include
-        )
-    # We don't need to explicitly link against pulseaudio itself, because
-    # the viewer probes for the system's copy at runtime.
-    set(PULSEAUDIO_LIBRARIES
-      # none needed!
-      )
-  endif (USESYSTEMLIBS)
-endif (PULSEAUDIO)
-
-if (PULSEAUDIO_FOUND)
-  add_definitions(-DLL_PULSEAUDIO_ENABLED=1)
-endif (PULSEAUDIO_FOUND)
+message( FATAL_ERROR "Pulseaudio cmake file is broken" )
diff --git a/indra/cmake/Tracy.cmake b/indra/cmake/Tracy.cmake
index 0cdc52ed4bf3f3eedb275931829dbce5dd21dbf8..34323e5d149e7ae6655b764cd00ed8eed6a63ea6 100644
--- a/indra/cmake/Tracy.cmake
+++ b/indra/cmake/Tracy.cmake
@@ -1,17 +1,18 @@
 # -*- cmake -*-
 include(Prebuilt)
 
+include_guard()
+add_library( ll::tracy INTERFACE IMPORTED )
+
 set(USE_TRACY OFF CACHE BOOL "Use Tracy profiler.")
 
 if (USE_TRACY)
-  # use_prebuilt_binary(tracy)
+  #use_system_binary(tracy)
+  #use_prebuilt_binary(tracy)
+
+  #target_include_directories( ll::tracy SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/tracy)
 
-  # See: indra/llcommon/llprofiler.h
-  add_definitions(-DLL_PROFILER_CONFIGURATION=3)
-  set(TRACY_LIBRARY TracyClient)
-else (USE_TRACY)
-  # Tracy.cmake should not set LLCOMMON_INCLUDE_DIRS, let LLCommon.cmake do that
-  set(TRACY_INCLUDE_DIR "")
-  set(TRACY_LIBRARY "")
+# See: indra/llcommon/llprofiler.h
+  target_compile_definitions(ll::tracy INTERFACE LL_PROFILER_CONFIGURATION=3 )
 endif (USE_TRACY)
 
diff --git a/indra/cmake/Tut.cmake b/indra/cmake/Tut.cmake
index e11a3c3314c2862ecb4025d903ad1664bd651c7a..ad938308033e3fab73d43f2a533c4aa3d9a2536c 100644
--- a/indra/cmake/Tut.cmake
+++ b/indra/cmake/Tut.cmake
@@ -1,6 +1,4 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-if (NOT USESYSTEMLIBS)
-  use_prebuilt_binary(tut)
-endif(NOT USESYSTEMLIBS)
+use_prebuilt_binary(tut)
diff --git a/indra/cmake/UI.cmake b/indra/cmake/UI.cmake
index 7b0d7f853dcdc4031b261804655d5fac42b34119..8b70192efc802c7ab5dcb18480deb21cba4241ff 100644
--- a/indra/cmake/UI.cmake
+++ b/indra/cmake/UI.cmake
@@ -2,64 +2,53 @@
 include(Prebuilt)
 include(FreeType)
 
-if (LINUX)
-  include(FindPkgConfig)
-
-  option(USE_X11 "Enable extra X11 support code" OFF)
+add_library( ll::uilibraries INTERFACE IMPORTED )
 
-  if (USESYSTEMLIBS)
-    set(PKGCONFIG_PACKAGES
-        atk
-        cairo
-        gdk-2.0
-        gdk-pixbuf-2.0
-        glib-2.0
-        gmodule-2.0
-        gtk+-2.0
-        gthread-2.0
-        pango
-        pangoft2
-        pangox
-        )
+if (LINUX)
+  target_compile_definitions(ll::uilibraries INTERFACE LL_GTK=1 LL_X11=1 )
 
-    if(USE_X11)
-      list(APPEND PKGCONFIG_PACKAGES 
-            x11
-            )
-    endif()
-      
-    foreach(pkg ${PKGCONFIG_PACKAGES})
-      pkg_check_modules(${pkg} REQUIRED ${pkg})
-      include_directories(${${pkg}_INCLUDE_DIRS})
-      link_directories(${${pkg}_LIBRARY_DIRS})
-      list(APPEND UI_LIBRARIES ${${pkg}_LIBRARIES})
-      add_definitions(${${pkg}_CFLAGS_OTHERS})
-    endforeach(pkg)
-  else (USESYSTEMLIBS)
-      set(PKGCONFIG_PACKAGES
-          gdk-3.0
-          gtk+-3.0
+  if( USE_CONAN )
+    target_link_libraries( ll::uilibraries INTERFACE CONAN_PKG::gtk )
+    return()
+  endif()
+  use_prebuilt_binary(gtk-atk-pango-glib)
+  
+  target_link_libraries( ll::uilibraries INTERFACE
+          atk-1.0
+          gdk-x11-2.0
+          gdk_pixbuf-2.0
+          Xinerama
+          glib-2.0
+          gmodule-2.0
+          gobject-2.0
+          gthread-2.0
+          gtk-x11-2.0
+          pango-1.0
+          pangoft2-1.0
+          pangox-1.0
+          pangoxft-1.0
+          Xinerama
+          ll::freetype
           )
+endif (LINUX)
+if( WINDOWS )
+  target_link_libraries( ll::uilibraries INTERFACE
+          opengl32
+          comdlg32
+          dxguid
+          kernel32
+          odbc32
+          odbccp32
+          oleaut32
+          shell32
+          Vfw32
+          wer
+          winspool
+          imm32
+          )
+endif()
 
-      if(USE_X11)
-        list(APPEND PKGCONFIG_PACKAGES 
-              x11
-              )
-      endif()
-
-      foreach(pkg ${PKGCONFIG_PACKAGES})
-        pkg_check_modules(${pkg} REQUIRED ${pkg})
-        include_directories(${${pkg}_INCLUDE_DIRS})
-        link_directories(${${pkg}_LIBRARY_DIRS})
-        list(APPEND UI_LIBRARIES ${${pkg}_LIBRARIES})
-        add_definitions(${${pkg}_CFLAGS_OTHERS})
-      endforeach(pkg)
-  endif (USESYSTEMLIBS)
-
-  if(USE_X11)
-    add_definitions(-DLL_X11=1)
-  endif()
+target_include_directories( ll::uilibraries SYSTEM INTERFACE
+        ${LIBS_PREBUILT_DIR}/include
+        )
 
-  # Always enable gtk in linux
-  add_definitions(-DLL_GTK=1)
-endif (LINUX)
\ No newline at end of file
diff --git a/indra/cmake/URIPARSER.cmake b/indra/cmake/URIPARSER.cmake
index a1723f2cb1ade1a7911a9ba89f6635befd6e7bd5..8f9aef15d5f17964d720f03ba4c53571c2aac1c3 100644
--- a/indra/cmake/URIPARSER.cmake
+++ b/indra/cmake/URIPARSER.cmake
@@ -1,35 +1,21 @@
 # -*- cmake -*-
 
-set(URIPARSER_FIND_QUIETLY ON)
-set(URIPARSER_FIND_REQUIRED ON)
+include_guard()
 
 include(Prebuilt)
 
-if (USESYSTEMLIBS)
-  include(FindURIPARSER)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(uriparser)
-  if (WINDOWS)
-    set(URIPARSER_LIBRARIES
+add_library( ll::uriparser INTERFACE IMPORTED )
+
+use_system_binary( uriparser )
+
+use_prebuilt_binary(uriparser)
+if (WINDOWS)
+  target_link_libraries( ll::uriparser INTERFACE
         debug ${ARCH_PREBUILT_DIRS_DEBUG}/uriparser.lib
         optimized ${ARCH_PREBUILT_DIRS_RELEASE}/uriparser.lib)
-  elseif (LINUX)
-    #
-    # When we have updated static libraries in competition with older
-    # shared libraries and we want the former to win, we need to do some
-    # extra work.  The *_PRELOAD_ARCHIVES settings are invoked early
-    # and will pull in the entire archive to the binary giving it.
-    # priority in symbol resolution.  Beware of cmake moving the
-    # achive load itself to another place on the link command line.  If
-    # that happens, you can try something like -Wl,-luriparser here to hide
-    # the archive.  Also be aware that the linker will not tolerate a
-    # second whole-archive load of the archive.  See viewer's
-    # CMakeLists.txt for more information.
-    #
-    set(URIPARSER_PRELOAD_ARCHIVES -Wl,--whole-archive uriparser -Wl,--no-whole-archive)
-    set(URIPARSER_LIBRARIES uriparser)
-  elseif (DARWIN)
-    set(URIPARSER_LIBRARIES uriparser)
-  endif (WINDOWS)
-  set(URIPARSER_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/uriparser)
-endif (USESYSTEMLIBS)
+elseif (LINUX)
+  target_link_libraries( ll::uriparser INTERFACE uriparser)
+elseif (DARWIN)
+  target_link_libraries( ll::uriparser INTERFACE liburiparser.dylib)
+endif (WINDOWS)
+target_include_directories( ll::uriparser SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/uriparser)
diff --git a/indra/cmake/Variables.cmake b/indra/cmake/Variables.cmake
index 4352e12263142136266c0c2899d3ea48e335c5e1..6539ab8abe232885e50b009e71ef981c1c1bd286 100644
--- a/indra/cmake/Variables.cmake
+++ b/indra/cmake/Variables.cmake
@@ -9,11 +9,9 @@
 #   LINUX   - Linux
 #   WINDOWS - Windows
 
+include_guard()
 # Relative and absolute paths to subtrees.
 
-if(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
-set(${CMAKE_CURRENT_LIST_FILE}_INCLUDED "YES")
-
 if(NOT DEFINED COMMON_CMAKE_DIR)
     set(COMMON_CMAKE_DIR "${CMAKE_SOURCE_DIR}/cmake")
 endif(NOT DEFINED COMMON_CMAKE_DIR)
@@ -132,10 +130,8 @@ set(TEMPLATE_VERIFIER_MASTER_URL "https://git.alchemyviewer.org/alchemy/master-m
 # If someone has specified an address size, use that to determine the
 # architecture.  Otherwise, let the architecture specify the address size.
 if (ADDRESS_SIZE EQUAL 32)
-  #message(STATUS "ADDRESS_SIZE is 32")
   set(ARCH i686)
 elseif (ADDRESS_SIZE EQUAL 64)
-  #message(STATUS "ADDRESS_SIZE is 64")
   set(ARCH x86_64)
 else (ADDRESS_SIZE EQUAL 32)
     #message(STATUS "ADDRESS_SIZE is UNDEFINED")
@@ -154,15 +150,6 @@ endif (ADDRESS_SIZE EQUAL 32)
 
 if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
   set(WINDOWS ON BOOL FORCE)
-  if (ADDRESS_SIZE EQUAL 64)
-    set(LL_ARCH ${ARCH}_win64)
-    set(LL_ARCH_DIR ${ARCH}-win64)
-  elseif (ADDRESS_SIZE EQUAL 32)
-    set(LL_ARCH ${ARCH}_win32)
-    set(LL_ARCH_DIR ${ARCH}-win32)
-  else()
-    message(FATAL_ERROR "Unkown Architecture!")
-  endif ()
 endif (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
 
 if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
@@ -188,9 +175,6 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   endif (DPKG_RESULT EQUAL 0)
 
 
-  set(LL_ARCH ${ARCH}_linux)
-  set(LL_ARCH_DIR ${ARCH}-linux)
-
   #if (INSTALL_PROPRIETARY)
     # Only turn on headless if we can find osmesa libraries.
     # include(FindPkgConfig)
@@ -258,9 +242,6 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   set(ADDRESS_SIZE 64)
   set(ARCH x86_64)
   set(CMAKE_OSX_ARCHITECTURES x86_64)
-
-  set(LL_ARCH ${ARCH}_darwin)
-  set(LL_ARCH_DIR universal-darwin)
 endif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 
 # Default deploy grid
@@ -278,7 +259,6 @@ if(DEFINED ENV{VIEWER_SIGNING_IDENTITY})
 endif()
 
 set(VERSION_BUILD "0" CACHE STRING "Revision number passed in from the outside")
-set(USESYSTEMLIBS OFF CACHE BOOL "Use libraries from your system rather than Linden-supplied prebuilt libraries.")
 
 set(USE_PRECOMPILED_HEADERS ON CACHE BOOL "Enable use of precompiled header directives where supported.")
 
@@ -286,4 +266,5 @@ set(VIEWER_UPDATE_SERVICE "https://git.alchemyviewer.org/api/v4/projects/198/pac
 
 source_group("CMake Rules" FILES CMakeLists.txt)
 
-endif(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)
+get_property(LL_GENERATOR_IS_MULTI_CONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+
diff --git a/indra/cmake/ViewerMiscLibs.cmake b/indra/cmake/ViewerMiscLibs.cmake
index 51e4ef3abacb14991a7646bbb4fe07c0a58211e0..8ff7a7c77b80c371aa8149b38ddcc7484a92d0a2 100644
--- a/indra/cmake/ViewerMiscLibs.cmake
+++ b/indra/cmake/ViewerMiscLibs.cmake
@@ -1,8 +1,9 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-if (NOT USESYSTEMLIBS)
+if( NOT USE_CONAN )
   use_prebuilt_binary(libhunspell)
-  use_prebuilt_binary(slvoice)
-endif(NOT USESYSTEMLIBS)
+endif()
+
+use_prebuilt_binary(slvoice)
 
diff --git a/indra/cmake/XmlRpcEpi.cmake b/indra/cmake/XmlRpcEpi.cmake
index 852412168963663275c62f53c229a6a99dc8f930..789cde2da96dcb14134724e7bf9bf92eb8a0b45c 100644
--- a/indra/cmake/XmlRpcEpi.cmake
+++ b/indra/cmake/XmlRpcEpi.cmake
@@ -1,23 +1,19 @@
 # -*- cmake -*-
 include(Prebuilt)
 
-set(XMLRPCEPI_FIND_QUIETLY ON)
-set(XMLRPCEPI_FIND_REQUIRED ON)
+include_guard()
+add_library( ll::xmlrpc-epi INTERFACE IMPORTED )
 
-if (USESYSTEMLIBS)
-  include(FindXmlRpcEpi)
-else (USESYSTEMLIBS)
-    use_prebuilt_binary(xmlrpc-epi)
-    if (WINDOWS)
-        set(XMLRPCEPI_LIBRARIES
-            debug ${ARCH_PREBUILT_DIRS_DEBUG}/xmlrpc-epid.lib
-            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/xmlrpc-epi.lib
-        )
-    else()
-        set(XMLRPCEPI_LIBRARIES
-            debug ${ARCH_PREBUILT_DIRS_DEBUG}/libxmlrpc-epi.a
-            optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libxmlrpc-epi.a
-        )
-    endif (WINDOWS)
-    set(XMLRPCEPI_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include)
-endif (USESYSTEMLIBS)
+use_system_binary( xmlrpc-epi )
+
+use_prebuilt_binary(xmlrpc-epi)
+if (WINDOWS)
+  target_link_libraries(ll::xmlrpc-epi INTERFACE
+    debug ${ARCH_PREBUILT_DIRS_DEBUG}/xmlrpc-epid.lib
+    optimized ${ARCH_PREBUILT_DIRS_RELEASE}/xmlrpc-epi.lib)
+else()
+  target_link_libraries(ll::xmlrpc-epi INTERFACE
+    debug ${ARCH_PREBUILT_DIRS_DEBUG}/libxmlrpc-epi.a
+    optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libxmlrpc-epi.a)
+endif (WINDOWS)
+target_include_directories( ll::xmlrpc-epi SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
diff --git a/indra/cmake/ZLIBNG.cmake b/indra/cmake/ZLIBNG.cmake
index 770017f0d1bfb3c0781c2cacbe4b44e1f4a0529e..68f33af0ad5dc9b1dd28fdf1696a002e59fe5347 100644
--- a/indra/cmake/ZLIBNG.cmake
+++ b/indra/cmake/ZLIBNG.cmake
@@ -1,43 +1,23 @@
 # -*- cmake -*-
 
-set(ZLIBNG_FIND_QUIETLY ON)
-set(ZLIBNG_FIND_REQUIRED ON)
-
 include(Prebuilt)
-include(Linking)
 
-if (USESYSTEMLIBS)
-  include(FindZLIBNG)
-else (USESYSTEMLIBS)
-  use_prebuilt_binary(zlib-ng)
-  use_prebuilt_binary(minizip-ng)
-  if (WINDOWS)
-    set(MINIZIP_LIBRARIES 
-      debug ${ARCH_PREBUILT_DIRS_DEBUG}/libminizip.lib
-      optimized ${ARCH_PREBUILT_DIRS_RELEASE}/libminizip.lib)
+include_guard()
+add_library( ll::zlib-ng INTERFACE IMPORTED )
+
+if(USE_CONAN )
+  target_link_libraries( ll::zlib-ng INTERFACE CONAN_PKG::zlib )
+  return()
+endif()
 
-    set(ZLIBNG_LIBRARIES 
+use_prebuilt_binary(zlib-ng)
+if (WINDOWS)
+  target_link_libraries( ll::zlib-ng INTERFACE
       debug ${ARCH_PREBUILT_DIRS_DEBUG}/zlibd.lib
       optimized ${ARCH_PREBUILT_DIRS_RELEASE}/zlib.lib)
-  elseif (LINUX)
-    set(MINIZIP_LIBRARIES minizip)
-    #
-    # When we have updated static libraries in competition with older
-    # shared libraries and we want the former to win, we need to do some
-    # extra work.  The *_PRELOAD_ARCHIVES settings are invoked early
-    # and will pull in the entire archive to the binary giving it 
-    # priority in symbol resolution.  Beware of cmake moving the
-    # achive load itself to another place on the link command line.  If
-    # that happens, you can try something like -Wl,-lz here to hide
-    # the archive.  Also be aware that the linker will not tolerate a
-    # second whole-archive load of the archive.  See viewer's
-    # CMakeLists.txt for more information.
-    #
-    set(ZLIBNG_PRELOAD_ARCHIVES -Wl,--whole-archive z -Wl,--no-whole-archive)
-    set(ZLIBNG_LIBRARIES z)
-  elseif (DARWIN)
-    set(MINIZIP_LIBRARIES minizip)
-    set(ZLIBNG_LIBRARIES -Wl,-force_load,${ARCH_PREBUILT_DIRS_RELEASE}/libz.a)
-  endif (WINDOWS)
-  set(ZLIBNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/zlib-ng)
-endif (USESYSTEMLIBS)
+else()
+  target_link_libraries( ll::zlib-ng INTERFACE ${ARCH_PREBUILT_DIRS_RELEASE}/libz.a)
+endif (WINDOWS)
+
+target_include_directories( ll::zlib-ng SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/zlib-ng)
+
diff --git a/indra/cmake/run_build_test.py b/indra/cmake/run_build_test.py
index 1e92868ae76fdfbad51d94e418d784b865ced85c..1f040bded519f85d81ac0ee7a5210f581b5113ea 100755
--- a/indra/cmake/run_build_test.py
+++ b/indra/cmake/run_build_test.py
@@ -73,7 +73,7 @@ def main(command, arguments=[], libpath=[], vars={}):
     if sys.platform == "win32":
         lpvars = ["PATH"]
     elif sys.platform == "darwin":
-        lpvars = ["LD_LIBRARY_PATH", "DYLD_LIBRARY_PATH"]
+        lpvars = ["LD_LIBRARY_PATH"] # , "DYLD_LIBRARY_PATH"]
     elif sys.platform.startswith("linux"):
         lpvars = ["LD_LIBRARY_PATH"]
     else:
diff --git a/indra/integration_tests/llimage_libtest/CMakeLists.txt b/indra/integration_tests/llimage_libtest/CMakeLists.txt
index 138a4cf0f50f431d2d7b9dc2ee571bdd3dc53ea6..2b5130f195ecfc062f2406574ebda3e6ced271ee 100644
--- a/indra/integration_tests/llimage_libtest/CMakeLists.txt
+++ b/indra/integration_tests/llimage_libtest/CMakeLists.txt
@@ -12,16 +12,6 @@ include(LLImageJ2COJ)
 include(LLKDU)
 include(LLFileSystem)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
 set(llimage_libtest_SOURCE_FILES
     llimage_libtest.cpp
     )
@@ -31,9 +21,6 @@ set(llimage_libtest_HEADER_FILES
     llimage_libtest.h
     )
 
-set_source_files_properties(${llimage_libtest_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llimage_libtest_SOURCE_FILES ${llimage_libtest_HEADER_FILES})
 
 add_executable(llimage_libtest
@@ -48,37 +35,21 @@ set_target_properties(llimage_libtest
     FALSE
 )
 
-# OS-specific libraries
-if (DARWIN)
-  include(CMakeFindFrameworks)
-  find_library(COREFOUNDATION_LIBRARY CoreFoundation)
-  set(OS_LIBRARIES ${COREFOUNDATION_LIBRARY})
-elseif (WINDOWS)
-  set(OS_LIBRARIES)
-elseif (LINUX)
-  set(OS_LIBRARIES)
-else (DARWIN)
-  message(FATAL_ERROR "Unknown platform")
-endif (DARWIN)
-
 # Libraries on which this application depends on
 # Sort by high-level to low-level
 target_link_libraries(llimage_libtest
-    ${LEGACY_STDIO_LIBS}
-    ${LLCOMMON_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLKDU_LIBRARIES}
-    ${KDU_LIBRARY}
-    ${LLIMAGEJ2COJ_LIBRARIES}
-    ${OS_LIBRARIES}
-    )
+        llcommon
+        llfilesystem
+        llmath
+        llimage
+        llkdu
+        llimagej2coj
+        )
     
 if (DARWIN)
   # Path inside the app bundle where we'll need to copy libraries
   set(LLIMAGE_LIBTEST_DESTINATION_DIR
-    ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/llimage_libtest.app/Contents/Resources
+    ${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/llimage_libtest.app/Contents/Resources
   )
   # Create the Contents/Resources directory
   add_custom_command(
diff --git a/indra/integration_tests/llui_libtest/CMakeLists.txt b/indra/integration_tests/llui_libtest/CMakeLists.txt
index 3957ede77f01d49af6eabc3cd7d389c223c4d8d8..d603e57aab87fab8bd8203bda2dbcd8df5750cd6 100644
--- a/indra/integration_tests/llui_libtest/CMakeLists.txt
+++ b/indra/integration_tests/llui_libtest/CMakeLists.txt
@@ -22,23 +22,6 @@ include(Hunspell)
 include(Linking)
 # include(Tut)
 
-include_directories(
-    ${FREETYPE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLUI_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LIBS_PREBUILD_DIR}/include/hunspell
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
-
 set(llui_libtest_SOURCE_FILES
     llui_libtest.cpp
     llwidgetreg.cpp
@@ -50,50 +33,26 @@ set(llui_libtest_HEADER_FILES
     llwidgetreg.h
     )
 
-set_source_files_properties(${llui_libtest_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llui_libtest_SOURCE_FILES ${llui_libtest_HEADER_FILES})
 
 add_executable(llui_libtest ${llui_libtest_SOURCE_FILES})
 
-# Link with OS-specific libraries for LLWindow dependency
-if (DARWIN)
-  find_library(COCOA_LIBRARY Cocoa)
-  find_library(IOKIT_LIBRARY IOKit)
-  set(OS_LIBRARIES ${COCOA_LIBRARY} ${IOKIT_LIBRARY})
-elseif (WINDOWS)
-  #ll_stack_trace needs this now...
-  list(APPEND WINDOWS_LIBRARIES dbghelp)
-  set(OS_LIBRARIES ${WINDOWS_LIBRARIES})
-elseif (LINUX)
-  set(OS_LIBRARIES)
-else (DARWIN)
-  message(FATAL_ERROR "unknown platform")
-endif (DARWIN)
-
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 target_link_libraries(llui_libtest
-    ${LEGACY_STDIO_LIBS}
-    llui
-    llinventory
-    llmessage
-    ${LLRENDER_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLKDU_LIBRARIES}
-    ${KDU_LIBRARY}
-    ${LLIMAGEJ2COJ_LIBRARIES}
-    ${OS_LIBRARIES}
-    ${GOOGLE_PERFTOOLS_LIBRARIES}
-    ${HUNSPELL_LIBRARY}
-    )
+        llui
+        llinventory
+        llmessage
+        llrender
+        llimage
+        llkdu
+        llimagej2coj
+        )
 
 if (WINDOWS)
     set_target_properties(llui_libtest
         PROPERTIES 
         LINK_FLAGS "/NODEFAULTLIB:LIBCMT"
-        LINK_FLAGS_DEBUG "/NODEFAULTLIB:MSVCRT /NODEFAULTLIB:LIBCMTD"
         )
 
     # Copy over OpenJPEG.dll
@@ -101,7 +60,7 @@ if (WINDOWS)
     set(OPENJPEG_RELEASE
         "${ARCH_PREBUILT_DIRS_RELEASE}/openjp2.dll")
     add_custom_command( TARGET llui_libtest POST_BUILD
-        COMMAND ${CMAKE_COMMAND} -E copy_if_different 
+            COMMAND ${CMAKE_COMMAND} -E copy_if_different
             ${OPENJPEG_RELEASE} ${CMAKE_CURRENT_BINARY_DIR}
         COMMENT "Copying OpenJPEG DLLs to binary directory"
         )
diff --git a/indra/lib/python/indra/util/llmanifest.py b/indra/lib/python/indra/util/llmanifest.py
index ee503df757f044eb018c9abc2705c6dcf0d50446..cb6fd0365ccfb02c1f16e91dfc2f9292251bde94 100755
--- a/indra/lib/python/indra/util/llmanifest.py
+++ b/indra/lib/python/indra/util/llmanifest.py
@@ -127,7 +127,7 @@ def get_default_platform(dummy):
          but not application name (used internally)""",
          default=None),
     dict(name='configuration',
-         description="""The build configuration used.""",
+         description="""The build configurations sub directory used.""",
          default="Release"),
     dict(name='dest', description='Destination directory.', default=DEFAULT_SRCTREE),
     dict(name='grid',
diff --git a/indra/llappearance/CMakeLists.txt b/indra/llappearance/CMakeLists.txt
index 3ff420e40f5702e3ad2068707573dd90e176c975..8af61ebf8726ab7e7ecf734eb351cbf4d47e8491 100644
--- a/indra/llappearance/CMakeLists.txt
+++ b/indra/llappearance/CMakeLists.txt
@@ -4,30 +4,11 @@ project(llappearance)
 
 include(00-Common)
 include(LLCommon)
-include(LLCharacter)
 include(LLImage)
-include(LLInventory)
-include(LLMath)
-include(LLMessage)
 include(LLCoreHttp)
-include(LLRender)
-include(LLFileSystem)
 include(LLWindow)
-include(LLXML)
 include(Linking)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCHARACTER_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLINVENTORY_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
-
 set(llappearance_SOURCE_FILES
     llavatarappearance.cpp
     llavatarjoint.cpp
@@ -71,26 +52,23 @@ set(llappearance_HEADER_FILES
     llavatarappearancedefines.h
     )
 
-set_source_files_properties(${llappearance_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llappearance_SOURCE_FILES ${llappearance_HEADER_FILES})
 
 add_library (llappearance ${llappearance_SOURCE_FILES})
 
 target_link_libraries(llappearance
-    ${LLCHARACTER_LIBRARIES}
-    ${LLINVENTORY_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLRENDER_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
+        llcharacter
+        llinventory
+        llimage
+        llrender
+        llfilesystem
+        llmath
+        llxml
+        llmessage
+        llcorehttp
+        llcommon
     )
+target_include_directories( llappearance  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
     target_precompile_headers(llappearance
@@ -101,18 +79,17 @@ endif()
 
 if (BUILD_HEADLESS)
   add_library (llappearanceheadless ${llappearance_SOURCE_FILES})
-  
+  target_include_directories( llappearanceheadless  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
+
   target_link_libraries(llappearanceheadless
-      ${LLCHARACTER_LIBRARIES}
-      ${LLINVENTORY_LIBRARIES}
-      ${LLIMAGE_LIBRARIES}
-      ${LLRENDERHEADLESS_LIBRARIES}
-      ${LLFILESYSTEM_LIBRARIES}
-      ${LLMATH_LIBRARIES}
-      ${LLXML_LIBRARIES}
-      ${LLMATH_LIBRARIES}
-      ${LLMESSAGE_LIBRARIES}
-      ${LLCOREHTTP_LIBRARIES}
-      ${LLCOMMON_LIBRARIES}
+          llcharacter
+          llinventory
+          llimage
+          llfilesystem
+          llmath
+          llxml
+          llmessage
+          llcorehttp
+          llcommon
       )
 endif (BUILD_HEADLESS)
diff --git a/indra/llaudio/CMakeLists.txt b/indra/llaudio/CMakeLists.txt
index 46c168467f2a671b357bad925376e715333e471b..9a9561a1ea9cc7e3fae7f5a76c6fca5a0ffcf8fb 100644
--- a/indra/llaudio/CMakeLists.txt
+++ b/indra/llaudio/CMakeLists.txt
@@ -7,23 +7,6 @@ include(LLAudio)
 include(FMODSTUDIO)
 include(OPENAL)
 include(LLCommon)
-include(LLMath)
-include(LLMessage)
-include(LLFileSystem)
-
-include_directories(
-    ${LLAUDIO_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${OGG_INCLUDE_DIRS}
-    ${VORBISENC_INCLUDE_DIRS}
-    ${VORBISFILE_INCLUDE_DIRS}
-    ${VORBIS_INCLUDE_DIRS}
-    ${OPENAL_INCLUDE_DIRS}
-    ${FREEAULT_INCLUDE_DIRS}
-    )
 
 set(llaudio_SOURCE_FILES
     llaudioengine.cpp
@@ -43,10 +26,7 @@ set(llaudio_HEADER_FILES
     llwindgen.h
     )
 
-if (USE_FMODSTUDIO)
-    include_directories(
-        ${FMODSTUDIO_INCLUDE_DIR}
-        )
+if (TARGET ll::fmodstudio)
     list(APPEND llaudio_SOURCE_FILES
          llaudioengine_fmodstudio.cpp
          lllistener_fmodstudio.cpp
@@ -58,14 +38,9 @@ if (USE_FMODSTUDIO)
          lllistener_fmodstudio.h
          llstreamingaudio_fmodstudio.h
          )
-endif (USE_FMODSTUDIO)
-
-if (USE_OPENAL)
-  include_directories(
-    ${OPENAL_LIBRARIES}
-    ${FREEALUT_LIBRARIES}
-    )
+endif ()
 
+if (TARGET ll::openal)
   list(APPEND llaudio_SOURCE_FILES
     llaudioengine_openal.cpp
     lllistener_openal.cpp
@@ -75,29 +50,32 @@ if (USE_OPENAL)
     llaudioengine_openal.h
     lllistener_openal.h
     )
-endif (USE_OPENAL)
-
-set_source_files_properties(${llaudio_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
+endif ()
 
 list(APPEND llaudio_SOURCE_FILES ${llaudio_HEADER_FILES})
 
 add_library (llaudio ${llaudio_SOURCE_FILES})
-target_link_libraries(
-    llaudio
-    ${LLCOMMON_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${VORBISENC_LIBRARIES}
-    ${VORBISFILE_LIBRARIES}
-    ${VORBIS_LIBRARIES}
-    ${OGG_LIBRARIES}
+target_include_directories( llaudio  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
+target_link_libraries( llaudio
+        llcommon
+        llmath
+        llmessage
+        llfilesystem
+        ll::vorbis
     )
 
+if( TARGET ll::openal )
+    target_link_libraries( llaudio ll::openal )
+endif()
+if( TARGET ll::fmodstudio )
+    target_link_libraries( llaudio ll::fmodstudio )
+endif()
+
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
   target_precompile_headers(llaudio
     PRIVATE
     [["linden_common.h"]]
     )
 endif()
+
+
diff --git a/indra/llcharacter/CMakeLists.txt b/indra/llcharacter/CMakeLists.txt
index 2f0012c76d5e0298a0bd6ab97f11c327f3b58f30..619daa8c5d8019a822a8ed10e7b845d58f7285e2 100644
--- a/indra/llcharacter/CMakeLists.txt
+++ b/indra/llcharacter/CMakeLists.txt
@@ -4,22 +4,6 @@ project(llcharacter)
 
 include(00-Common)
 include(LLCommon)
-include(LLMath)
-include(LLMessage)
-include(LLFileSystem)
-include(LLXML)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llcharacter_SOURCE_FILES
     llanimationstates.cpp
@@ -69,20 +53,18 @@ set(llcharacter_HEADER_FILES
     llvisualparam.h
     )
 
-set_source_files_properties(${llcharacter_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llcharacter_SOURCE_FILES ${llcharacter_HEADER_FILES})
 
 add_library (llcharacter ${llcharacter_SOURCE_FILES})
+target_include_directories( llcharacter  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(
-    llcharacter
-    ${LLCOMMON_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLXML_LIBRARIES}
+        llcharacter
+        llcommon
+        llmath
+        llmessage
+        llfilesystem
+        llxml
     )
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 0b3093f20211624e00c3b3d7652fb77ff53f9405..d2335230ce1c9e159be89a24ab4a293640ef1df7 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -16,19 +16,6 @@ include(Tracy)
 include(OpenSSL)
 include(XXHash)
 
-include_directories(
-    ${EXPAT_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${ZLIBNG_INCLUDE_DIRS}
-    ${URIPARSER_INCLUDE_DIRS}
-    ${XXHASH_INCLUDE_DIRS}
-    )
-
-# add_executable(lltreeiterators lltreeiterators.cpp)
-# 
-# target_link_libraries(lltreeiterators
-#     ${LLCOMMON_LIBRARIES})
 
 set(llcommon_SOURCE_FILES
     alxxh.cpp
@@ -270,11 +257,6 @@ set(llcommon_HEADER_FILES
     StackWalker.h
     )
     
-if (DARWIN)
-  list(APPEND llcommon_HEADER_FILES llsys_objc.h)
-  list(APPEND llcommon_SOURCE_FILES llsys_objc.mm)
-endif (DARWIN)
-
 if (DARWIN)
   list(APPEND llcommon_HEADER_FILES llsys_objc.h)
   list(APPEND llcommon_SOURCE_FILES llsys_objc.mm)
@@ -283,44 +265,28 @@ if (DARWIN)
                               PROPERTIES SKIP_PRECOMPILE_HEADERS TRUE)
 endif (DARWIN)
 
-set_source_files_properties(${llcommon_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
-if (USE_SENTRY)
-  set_source_files_properties(${llcommon_SOURCE_FILES}
-    PROPERTIES COMPILE_DEFINITIONS "${SENTRY_DEFINE}")
-endif (USE_SENTRY)
-
 list(APPEND llcommon_SOURCE_FILES ${llcommon_HEADER_FILES})
 
 add_library (llcommon ${llcommon_SOURCE_FILES})
 
-set_target_properties(llcommon PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
-
 target_link_libraries(
-    llcommon
-    PUBLIC
-    ${APRUTIL_LIBRARIES}
-    ${APR_LIBRARIES}
-    ${EXPAT_LIBRARIES}
-    ${OPENSSL_LIBRARIES}
-    ${ZLIBNG_LIBRARIES}
-    ${WINDOWS_LIBRARIES}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_PROGRAM_OPTIONS_LIBRARY}
-    ${BOOST_REGEX_LIBRARY}
-    ${BOOST_STACKTRACE_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    ${GOOGLE_PERFTOOLS_LIBRARIES}
-    ${URIPARSER_LIBRARIES}
-    nlohmann_json::nlohmann_json
-    fmt::fmt
-    ${TRACY_LIBRARY}
-    ${DL_LIBRARY}
-    ${RT_LIBRARY}
+        llcommon
+        PUBLIC
+        ll::apr
+        ll::expat
+        ll::jsoncpp
+        ll::zlib-ng
+        ll::boost
+        ll::uriparser
+        ll::oslibraries
+        ll::tracy
+        nlohmann_json::nlohmann_json
+        fmt::fmt
     )
 
+target_include_directories(llcommon INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
+target_include_directories(llcommon PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+
 add_dependencies(llcommon stage_third_party_libs)
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
@@ -354,16 +320,7 @@ if (LL_TESTS)
   LL_ADD_PROJECT_UNIT_TESTS(llcommon "${llcommon_TEST_SOURCE_FILES}")
 
   #set(TEST_DEBUG on)
-  set(test_libs llcommon 
-      ${LLCOMMON_LIBRARIES} 
-      ${WINDOWS_LIBRARIES} 
-      ${BOOST_FIBER_LIBRARY} 
-      ${BOOST_CONTEXT_LIBRARY} 
-      ${BOOST_THREAD_LIBRARY} 
-      ${BOOST_SYSTEM_LIBRARY}
-      ${OPENSSL_LIBRARIES}
-      ${ZLIBNG_LIBRARIES}
-      )
+  set(test_libs llcommon)
   LL_ADD_INTEGRATION_TEST(bitpack "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(classic_callback "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(commonmisc "" "${test_libs}")
diff --git a/indra/llcommon/apply.h b/indra/llcommon/apply.h
new file mode 100644
index 0000000000000000000000000000000000000000..7c58d63bc03f4a45aac4db3fe1b20177ade5b652
--- /dev/null
+++ b/indra/llcommon/apply.h
@@ -0,0 +1,115 @@
+/**
+ * @file   apply.h
+ * @author Nat Goodspeed
+ * @date   2022-06-18
+ * @brief  C++14 version of std::apply()
+ * 
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Copyright (c) 2022, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+#if ! defined(LL_APPLY_H)
+#define LL_APPLY_H
+
+#include <boost/type_traits/function_traits.hpp>
+#include <tuple>
+
+namespace LL
+{
+
+/**
+ * USAGE NOTE:
+ * https://stackoverflow.com/a/40523474/5533635
+ *
+ * If you're trying to pass apply() a variadic function, the compiler
+ * complains that it can't deduce the callable type, presumably because it
+ * doesn't know which arity to reify to pass.
+ *
+ * But it works to wrap the variadic function in a generic lambda, e.g.:
+ *
+ * @CODE
+ * LL::apply(
+ *     [](auto&&... args)
+ *     {
+ *         return variadic(std::forward<decltype(args)>(args)...);
+ *     },
+ *     args);
+ * @ENDCODE
+ *
+ * Presumably this is because there's only one instance of the generic lambda
+ * @em type, with a variadic <tt>operator()()</tt>.
+ *
+ * It's pointless to provide a wrapper @em function that implicitly supplies
+ * the generic lambda. You couldn't pass your variadic function to our wrapper
+ * function, for the same original reason!
+ *
+ * Instead we provide a wrapper @em macro. Sorry, Dr. Stroustrup.
+ */
+#define VAPPLY(FUNC, ARGS)                                          \
+    LL::apply(                                                      \
+        [](auto&&... args)                                          \
+        {                                                           \
+            return (FUNC)(std::forward<decltype(args)>(args)...);   \
+        },                                                          \
+        (ARGS))
+
+#if __cplusplus >= 201703L
+
+// C++17 implementation
+using std::apply;
+
+#else // C++14
+
+// Derived from https://stackoverflow.com/a/20441189
+// and https://en.cppreference.com/w/cpp/utility/apply
+template <typename CALLABLE, typename TUPLE, std::size_t... I>
+auto apply_impl(CALLABLE&& func, TUPLE&& args, std::index_sequence<I...>)
+{
+    // call func(unpacked args)
+    return std::forward<CALLABLE>(func)(std::move(std::get<I>(args))...);
+}
+
+template <typename CALLABLE, typename... ARGS>
+auto apply(CALLABLE&& func, const std::tuple<ARGS...>& args)
+{
+    // std::index_sequence_for is the magic sauce here, generating an argument
+    // pack of indexes for each entry in args. apply_impl() can then pass
+    // those to std::get() to unpack args into individual arguments.
+    return apply_impl(std::forward<CALLABLE>(func),
+                      args,
+                      std::index_sequence_for<ARGS...>{});
+}
+
+// per https://stackoverflow.com/a/57510428/5533635
+template <typename CALLABLE, typename T, size_t SIZE>
+auto apply(CALLABLE&& func, const std::array<T, SIZE>& args)
+{
+    return apply(std::forward<CALLABLE>(func), std::tuple_cat(args));
+}
+
+// per https://stackoverflow.com/a/28411055/5533635
+template <typename CALLABLE, typename T, std::size_t... I>
+auto apply_impl(CALLABLE&& func, const std::vector<T>& args, std::index_sequence<I...>)
+{
+    return apply_impl(std::forward<CALLABLE>(func),
+                      std::make_tuple(std::forward<T>(args[I])...),
+                      I...);
+}
+
+// this goes beyond C++17 std::apply()
+template <typename CALLABLE, typename T>
+auto apply(CALLABLE&& func, const std::vector<T>& args)
+{
+    constexpr auto arity = boost::function_traits<CALLABLE>::arity;
+    assert(args.size() == arity);
+    return apply_impl(std::forward<CALLABLE>(func),
+                      args,
+                      std::make_index_sequence<arity>());
+}
+
+#endif // C++14
+
+} // namespace LL
+
+#endif /* ! defined(LL_APPLY_H) */
diff --git a/indra/llcommon/llprocess.cpp b/indra/llcommon/llprocess.cpp
index e40d95f9565cb8110956202aa1c7fe31366e36cf..c14d7bca21def7dd0f0cd51d1999b7ea04acb3a8 100644
--- a/indra/llcommon/llprocess.cpp
+++ b/indra/llcommon/llprocess.cpp
@@ -274,6 +274,14 @@ class ReadPipeImpl: public LLProcess::ReadPipe
 					boost::bind(&ReadPipeImpl::tick, this, _1));
 	}
 
+    ~ReadPipeImpl()
+    {
+        if (mConnection.connected())
+        {
+            mConnection.disconnect();
+        }
+    }
+
 	// Much of the implementation is simply connecting the abstract virtual
 	// methods with implementation data concealed from the base class.
 	virtual std::istream& get_istream() { return mStream; }
diff --git a/indra/llcommon/llsd.h b/indra/llcommon/llsd.h
index 3a44c75877996ff7b24c0ebff2ef1972f62d0ed4..1a14d7ead46e404145ffe090676df2bb081f7624 100644
--- a/indra/llcommon/llsd.h
+++ b/indra/llcommon/llsd.h
@@ -444,6 +444,49 @@ class LL_COMMON_API LLSD final
 	static std::string		typeString(Type type);		// Return human-readable type as a string
 };
 
+struct llsd_select_bool
+{
+	LLSD::Boolean operator()(const LLSD& sd) const
+	{
+		return sd.asBoolean();
+	}
+};
+struct llsd_select_integer
+{
+	LLSD::Integer operator()(const LLSD& sd) const
+	{
+		return sd.asInteger();
+	}
+};
+struct llsd_select_real
+{
+	LLSD::Real operator()(const LLSD& sd) const
+	{
+		return sd.asReal();
+	}
+};
+struct llsd_select_float
+{
+	F32 operator()(const LLSD& sd) const
+	{
+		return (F32)sd.asReal();
+	}
+};
+struct llsd_select_uuid
+{
+	LLSD::UUID operator()(const LLSD& sd) const
+	{
+		return sd.asUUID();
+	}
+};
+struct llsd_select_string
+{
+	LLSD::String operator()(const LLSD& sd) const
+	{
+		return sd.asString();
+	}
+};
+
 LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLSD& llsd);
 
 namespace llsd
diff --git a/indra/llcommon/llstl.h b/indra/llcommon/llstl.h
index f110f21aff2bc4edfad5df76b8dd56589276e5eb..2162e8eb7b174f1ddc640705fd05abc3e22095d4 100644
--- a/indra/llcommon/llstl.h
+++ b/indra/llcommon/llstl.h
@@ -386,9 +386,9 @@ OutputIter ll_transform_n(
 // select... with the stl. Look up usage on the sgi website.
 
 template <class _Pair>
-struct _LLSelect1st 
+struct _LLSelect1st
 {
-  const typename _Pair::first_type& operator()(const _Pair& __x) const {
+  const auto& operator()(const _Pair& __x) const {
     return __x.first;
   }
 };
@@ -396,7 +396,7 @@ struct _LLSelect1st
 template <class _Pair>
 struct _LLSelect2nd
 {
-  const typename _Pair::second_type& operator()(const _Pair& __x) const {
+  const auto& operator()(const _Pair& __x) const {
     return __x.second;
   }
 };
@@ -406,52 +406,51 @@ template <class _Pair> struct llselect2nd : public _LLSelect2nd<_Pair> {};
 
 // helpers to deal with the fact that MSDev does not package
 // bind... with the stl. Again, this is from sgi.
-template <class _Operation>
+template <class _Operation, typename _Arg1>
 class llbinder1st
 {
 protected:
   _Operation op;
-  typename _Operation::first_argument_type value;
+  _Arg1 value;
 public:
-  llbinder1st(const _Operation& __x,
-			  const typename _Operation::first_argument_type& __y)
+  llbinder1st(const _Operation& __x, const _Arg1& __y)
       : op(__x), value(__y) {}
-	typename _Operation::result_type
-	operator()(const typename _Operation::second_argument_type& __x) const {
-		return op(value, __x);
-	}
+    template <typename _Arg2>
+    auto
+    operator()(const _Arg2& __x) const {
+        return op(value, __x);
+    }
 };
 
 template <class _Operation, class _Tp>
-inline llbinder1st<_Operation>
+inline auto
 llbind1st(const _Operation& __oper, const _Tp& __x)
 {
-  typedef typename _Operation::first_argument_type _Arg1_type;
-  return llbinder1st<_Operation>(__oper, _Arg1_type(__x));
+  return llbinder1st<_Operation, _Tp>(__oper, __x);
 }
 
-template <class _Operation>
+template <class _Operation, typename _Arg2>
 class llbinder2nd
 {
 protected:
 	_Operation op;
-	typename _Operation::second_argument_type value;
+	_Arg2 value;
 public:
 	llbinder2nd(const _Operation& __x,
-				const typename _Operation::second_argument_type& __y)
+				const _Arg2& __y)
 		: op(__x), value(__y) {}
-	typename _Operation::result_type
-	operator()(const typename _Operation::first_argument_type& __x) const {
+	template <typename _Arg1>
+	auto
+	operator()(const _Arg1& __x) const {
 		return op(__x, value);
 	}
 };
 
 template <class _Operation, class _Tp>
-inline llbinder2nd<_Operation>
+inline auto
 llbind2nd(const _Operation& __oper, const _Tp& __x)
 {
-  typedef typename _Operation::second_argument_type _Arg2_type;
-  return llbinder2nd<_Operation>(__oper, _Arg2_type(__x));
+  return llbinder2nd<_Operation, _Tp>(__oper, __x);
 }
 
 /**
diff --git a/indra/llcommon/stringize.h b/indra/llcommon/stringize.h
index 12df6939108e47b3f0e05c8ccfa40ffae7f8f5c4..c0b13135f9e5d1668407b49b193b4d250aab3419 100644
--- a/indra/llcommon/stringize.h
+++ b/indra/llcommon/stringize.h
@@ -30,7 +30,7 @@
 #define LL_STRINGIZE_H
 
 #include <sstream>
-#include <llstring.h>
+#include "llstring.h"
 #include <boost/call_traits.hpp>
 
 /**
diff --git a/indra/llcommon/tests/llleap_test.cpp b/indra/llcommon/tests/llleap_test.cpp
index d42c46a2c57bf15d08983851851e17d4cc899ba8..7ee36a9ea6ace696a16c22c078cb6574c1174b60 100644
--- a/indra/llcommon/tests/llleap_test.cpp
+++ b/indra/llcommon/tests/llleap_test.cpp
@@ -15,6 +15,7 @@
 #include "llleap.h"
 // STL headers
 // std headers
+#include <functional>
 // external library headers
 #include <boost/assign/list_of.hpp>
 #include <boost/phoenix/core/argument.hpp>
@@ -28,7 +29,6 @@
 #include "llstring.h"
 #include "stringize.h"
 #include "StringVec.h"
-#include <functional>
 
 using boost::assign::list_of;
 
@@ -109,11 +109,6 @@ namespace tut
                    "import os\n"
                    "import sys\n"
                    "\n"
-                   // Don't forget that this Python script is written to some
-                   // temp directory somewhere! Its __file__ is useless in
-                   // finding indra/lib/python. Use our __FILE__, with
-                   // raw-string syntax to deal with Windows pathnames.
-                   "mydir = os.path.dirname(r'" << __FILE__ << "')\n"
                    "from llbase import llsd\n"
                    "\n"
                    "class ProtocolError(Exception):\n"
@@ -240,9 +235,9 @@ namespace tut
                              "import sys\n"
                              "sys.stderr.write('''Hello from Python!\n"
                              "note partial line''')\n");
+        StringVec vcommand{ PYTHON, script.getName() };
         CaptureLog log(LLError::LEVEL_INFO);
-        waitfor(LLLeap::create(get_test_name(),
-                               sv(list_of(PYTHON)(script.getName()))));
+        waitfor(LLLeap::create(get_test_name(), vcommand));
         log.messageWith("Hello from Python!");
         log.messageWith("note partial line");
     }
diff --git a/indra/llcorehttp/CMakeLists.txt b/indra/llcorehttp/CMakeLists.txt
index 287b0095198ea783ffc0fbaf168ffd0d7c7e7cb8..7688ba54801a0b7634643568703cc98dac502c0b 100644
--- a/indra/llcorehttp/CMakeLists.txt
+++ b/indra/llcorehttp/CMakeLists.txt
@@ -9,18 +9,9 @@ include(NGHTTP2)
 include(ZLIBNG)
 include(LLCoreHttp)
 include(LLAddBuildTest)
-include(LLMessage)
 include(LLCommon)
 include(Tut)
 
-include_directories (${CMAKE_CURRENT_SOURCE_DIR})
-
-include_directories(
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOREHTTP_INCLUDE_DIRS}
-    )
-
 set(llcorehttp_SOURCE_FILES
     bufferarray.cpp
     bufferstream.cpp
@@ -78,8 +69,6 @@ set(llcorehttp_HEADER_FILES
     _thread.h
     )
 
-set_source_files_properties(${llcorehttp_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
 if (DARWIN OR LINUX)
   # Boost headers define unused members in condition_variable so...
   set_source_files_properties(${llcorehttp_SOURCE_FILES}
@@ -90,17 +79,17 @@ list(APPEND llcorehttp_SOURCE_FILES ${llcorehttp_HEADER_FILES})
 
 add_library (llcorehttp ${llcorehttp_SOURCE_FILES})
 target_link_libraries(
-  llcorehttp
-  PUBLIC
-  llcommon
-  ${CURL_LIBRARIES}
-  ${NGHTTP2_LIBRARIES}
-  ${OPENSSL_LIBRARIES}
-  ${CRYPTO_LIBRARIES}
-  ${NGHTTP2_LIBRARIES}
-  ${BOOST_THREAD_LIBRARY}
-  ${BOOST_SYSTEM_LIBRARY}
+        llcorehttp
+        llcommon
+        ll::libcurl
+        ll::openssl
+        ll::nghttp2
   )
+target_include_directories( llcorehttp INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
+# llmessage depends on llcorehttp, yet llcorehttp also depends on llmessage (at least for includes).
+# Cannot/Should not use target_link_libraries here to add llmessage to the dependencies, as that would
+# lead to circular dependencies (or in case of cmake, the first project declaring it's dependencies wins)
+target_include_directories( llcorehttp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../llmessage)
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
   target_precompile_headers(llcorehttp
@@ -118,7 +107,6 @@ if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0")
   )
 endif()
 
-
 # tests
 set(LLCOREHTTP_TESTS ON CACHE BOOL
     "Build and run llcorehttp integration tests specifically")
@@ -137,26 +125,15 @@ if (LL_TESTS AND LLCOREHTTP_TESTS)
       tests/test_bufferstream.hpp
       )
 
-  set_source_files_properties(${llcorehttp_TEST_HEADER_FILES}
-                              PROPERTIES HEADER_FILE_ONLY TRUE)
-
   list(APPEND llcorehttp_TEST_SOURCE_FILES ${llcorehttp_TEST_HEADER_FILES})
 
   # LL_ADD_PROJECT_UNIT_TESTS(llcorehttp "${llcorehttp_TEST_SOURCE_FILES}")
 
   #    set(TEST_DEBUG on)
   set(test_libs
-      ${LLCOREHTTP_LIBRARIES}
-      ${WINDOWS_LIBRARIES}
-      ${LLMESSAGE_LIBRARIES}
-      ${LLCOMMON_LIBRARIES}
-      ${CURL_LIBRARIES}
-      ${NGHTTP2_LIBRARIES}
-      ${OPENSSL_LIBRARIES}
-      ${CRYPTO_LIBRARIES}
-      ${NGHTTP2_LIBRARIES}
-      ${BOOST_THREAD_LIBRARY}
-      ${BOOST_SYSTEM_LIBRARY}
+          llcorehttp
+          llmessage
+          llcommon
       )
 
   # If http_proxy is in the current environment (e.g. to fetch s3-proxy
@@ -216,16 +193,9 @@ endif (DARWIN)
       )
 
   set(example_libs
-      ${LLCOREHTTP_LIBRARIES}
-      ${WINDOWS_LIBRARIES}
-      ${LLMESSAGE_LIBRARIES}
-      ${LLCOMMON_LIBRARIES}
-      ${CURL_LIBRARIES}
-      ${OPENSSL_LIBRARIES}
-      ${CRYPTO_LIBRARIES}
-      ${NGHTTP2_LIBRARIES}
-      ${BOOST_THREAD_LIBRARY}
-      ${BOOST_SYSTEM_LIBRARY}
+          llcorehttp
+          llmessage
+          llcommon
       )
 
   add_executable(http_texture_load
diff --git a/indra/llcorehttp/tests/test_llcorehttp_peer.py b/indra/llcorehttp/tests/test_llcorehttp_peer.py
index 08a76ae9b64ccb80dcc31a0a1afdcde1ebdbc64d..55e4a57eae13ae99af272cd764ef35b24c21f140 100755
--- a/indra/llcorehttp/tests/test_llcorehttp_peer.py
+++ b/indra/llcorehttp/tests/test_llcorehttp_peer.py
@@ -38,7 +38,6 @@
 from http.server import HTTPServer, BaseHTTPRequestHandler
 
 
-from llbase.fastest_elementtree import parse as xml_parse
 from llbase import llsd
 
 # we're in llcorehttp/tests ; testrunner.py is found in llmessage/tests
diff --git a/indra/llfilesystem/CMakeLists.txt b/indra/llfilesystem/CMakeLists.txt
index 2b67f8cee1444312a16cfc23bf4126a85eec0d9a..9f24f75eabc2116e50e2674983543ceb1e44aeb1 100644
--- a/indra/llfilesystem/CMakeLists.txt
+++ b/indra/llfilesystem/CMakeLists.txt
@@ -4,12 +4,6 @@ project(llfilesystem)
 
 include(00-Common)
 include(LLCommon)
-include(UnixInstall)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llfilesystem_SOURCE_FILES
     lldir.cpp
@@ -34,9 +28,6 @@ if (DARWIN)
   LIST(APPEND llfilesystem_SOURCE_FILES lldir_utils_objc.h)
   LIST(APPEND llfilesystem_SOURCE_FILES lldir_mac.cpp)
   LIST(APPEND llfilesystem_HEADER_FILES lldir_mac.h)
-
-  set_source_files_properties(lldir_utils_objc.mm
-                            PROPERTIES SKIP_PRECOMPILE_HEADERS TRUE)
 endif (DARWIN)
 
 if (LINUX)
@@ -56,40 +47,14 @@ if (WINDOWS)
   LIST(APPEND llfilesystem_HEADER_FILES lldir_win32.h)
 endif (WINDOWS)
 
-set_source_files_properties(${llfilesystem_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llfilesystem_SOURCE_FILES ${llfilesystem_HEADER_FILES})
 
 add_library (llfilesystem ${llfilesystem_SOURCE_FILES})
 
-set(cache_BOOST_LIBRARIES
-    ${BOOST_FILESYSTEM_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    )
-
 target_link_libraries(llfilesystem
-    PUBLIC
-    ${LLCOMMON_LIBRARIES}
-    ${cache_BOOST_LIBRARIES}
+        llcommon
     )
-
-if (WINDOWS)
-  target_link_libraries(llfilesystem PUBLIC Shlwapi)
-endif (WINDOWS)
-
-if (DARWIN)
-  include(CMakeFindFrameworks)
-  find_library(COCOA_LIBRARY Cocoa)
-  target_link_libraries(llfilesystem PUBLIC ${COCOA_LIBRARY})
-endif (DARWIN)
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llfilesystem
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
+target_include_directories( llfilesystem  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 # Add tests
 if (LL_TESTS)
@@ -99,14 +64,10 @@ if (LL_TESTS)
     lldiriterator.cpp
     )
 
-    set_source_files_properties(lldiriterator.cpp
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${cache_BOOST_LIBRARIES}"
-    )
     LL_ADD_PROJECT_UNIT_TESTS(llfilesystem "${llfilesystem_TEST_SOURCE_FILES}")
 
     # INTEGRATION TESTS
-    set(test_libs llmath llcommon llfilesystem ${LLCOMMON_LIBRARIES} ${WINDOWS_LIBRARIES})
+    set(test_libs llmath llcommon llfilesystem )
 
     # TODO: Some of these need refactoring to be proper Unit tests rather than Integration tests.
     LL_ADD_INTEGRATION_TEST(lldir "" "${test_libs}")
diff --git a/indra/llfilesystem/lldiskcache.cpp b/indra/llfilesystem/lldiskcache.cpp
index 48f8c39951ce209b965f415fd284c21181524471..f85fe1a2da2ff58a069153f0f3bcce2197e9233d 100644
--- a/indra/llfilesystem/lldiskcache.cpp
+++ b/indra/llfilesystem/lldiskcache.cpp
@@ -35,7 +35,6 @@
 #include "llassettype.h"
 #include "lldir.h"
 #include <boost/filesystem.hpp>
-#include <boost/range/iterator_range.hpp>
 #include <chrono>
 
 #include "lldiskcache.h"
@@ -430,20 +429,22 @@ void LLDiskCache::removeOldVFSFiles()
 #endif
     if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
     {
-        for (auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(cache_path, ec), {}))
+        boost::filesystem::directory_iterator iter(cache_path, ec);
+        while (iter != boost::filesystem::directory_iterator() && !ec.failed())
         {
-            if (boost::filesystem::is_regular_file(entry, ec) && !ec.failed())
+            if (boost::filesystem::is_regular_file(*iter, ec) && !ec.failed())
             {
-                if ((entry.path().string().find(CACHE_FORMAT) != std::string::npos) ||
-                    (entry.path().string().find(DB_FORMAT) != std::string::npos))
+                if (((*iter).path().string().find(CACHE_FORMAT) != std::string::npos) ||
+                    ((*iter).path().string().find(DB_FORMAT) != std::string::npos))
                 {
-                    boost::filesystem::remove(entry, ec);
+                    boost::filesystem::remove(*iter, ec);
                     if (ec.failed())
                     {
-                        LL_WARNS() << "Failed to delete cache file " << entry << ": " << ec.message() << LL_ENDL;
+                        LL_WARNS() << "Failed to delete cache file " << *iter << ": " << ec.message() << LL_ENDL;
                     }
                 }
             }
+            iter.increment(ec);
         }
     }
 }
@@ -469,26 +470,21 @@ uintmax_t LLDiskCache::dirFileSize(const std::string dir)
 #endif
     if (boost::filesystem::is_directory(dir_path, ec) && !ec.failed())
     {
-        boost::filesystem::recursive_directory_iterator dir_iter(dir_path,ec);
-        if (!ec.failed())
+        boost::filesystem::directory_iterator iter(dir_path, ec);
+        while (iter != boost::filesystem::directory_iterator() && !ec.failed())
         {
-            for (auto& entry : boost::make_iterator_range(dir_iter, {}))
+            if (boost::filesystem::is_regular_file(*iter, ec) && !ec.failed())
             {
-                ec.clear();
-                if (boost::filesystem::is_regular_file(entry, ec) && !ec.failed())
+                if ((*iter).path().string().find(mCacheFilenamePrefix) != std::string::npos)
                 {
-                    if (entry.path().string().rfind(sCacheFilenameExt) != std::string::npos)
+                    uintmax_t file_size = boost::filesystem::file_size(*iter, ec);
+                    if (!ec.failed())
                     {
-                        uintmax_t file_size = boost::filesystem::file_size(entry, ec);
-                        if (ec.failed())
-                        {
-                            LL_WARNS() << "Failed to get file size for cache file " << entry.path().string() << " : " << ec.message() << LL_ENDL;
-                            continue;
-                        }
                         total_file_size += file_size;
                     }
                 }
             }
+            iter.increment(ec);
         }
     }
 
diff --git a/indra/llimage/CMakeLists.txt b/indra/llimage/CMakeLists.txt
index 5b1db56b41272c313ae9c45ba7b402554d7e843e..e1cc5185caf980851610e71622e91f058ff75a5e 100644
--- a/indra/llimage/CMakeLists.txt
+++ b/indra/llimage/CMakeLists.txt
@@ -5,25 +5,13 @@ project(llimage)
 include(00-Common)
 include(LLCommon)
 include(LLImage)
-include(LLMath)
-include(LLFileSystem)
+include(JPEG)
 include(LLKDU)
-include(LLImageJ2COJ)
 include(WebP)
 include(ZLIBNG)
 include(LLAddBuildTest)
 include(Tut)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${WEBP_INCLUDE_DIRS}
-    ${PNG_INCLUDE_DIRS}
-    ${ZLIBNG_INCLUDE_DIRS}
-    )
-
 set(llimage_SOURCE_FILES
     llimagebmp.cpp
     llimage.cpp
@@ -57,46 +45,29 @@ set(llimage_HEADER_FILES
     llpngwrapper.h
     )
 
-set_source_files_properties(${llimage_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llimage_SOURCE_FILES ${llimage_HEADER_FILES})
 
 add_library (llimage ${llimage_SOURCE_FILES})
+target_include_directories( llimage  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 if (USE_KDU)
-    target_link_libraries(llimage ${LLKDU_LIBRARIES})
+    target_link_libraries(llimage llkdu)
 else (USE_KDU)
-    target_link_libraries(llimage ${LLIMAGEJ2COJ_LIBRARIES})
+    target_link_libraries(llimage llimagej2coj)
 endif (USE_KDU)
 
 target_link_libraries(llimage
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
+        llfilesystem
+        llmath
+        llcommon
     ${WEBP_LIBRARIES}
-    ${JPEG_LIBRARIES}
-    ${PNG_LIBRARIES}
-    ${ZLIBNG_LIBRARIES}
-    )
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llimage
-    PRIVATE
-    [["linden_common.h"]]
+        ll::libpng
+        ll::libjpeg
     )
-endif()
 
 # Add tests
 if (LL_TESTS)
-
-set_source_files_properties(
-    llimageworker.cpp
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${LLPRIMITIVE_LIBRARIES}"
-  )
-
   SET(llimage_TEST_SOURCE_FILES
     llimageworker.cpp
     )
diff --git a/indra/llimagej2coj/CMakeLists.txt b/indra/llimagej2coj/CMakeLists.txt
index cb6303d7e85943a5703fd7ad38ed09f803e34061..93e85668dd61c0109ff62670c17ae929b27fc582 100644
--- a/indra/llimagej2coj/CMakeLists.txt
+++ b/indra/llimagej2coj/CMakeLists.txt
@@ -7,12 +7,6 @@ include(LLCommon)
 include(LLImage)
 include(OpenJPEG)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${OPENJPEG_INCLUDE_DIR}
-    )
-
 set(llimagej2coj_SOURCE_FILES
     llimagej2coj.cpp
     )
@@ -23,16 +17,13 @@ set(llimagej2coj_HEADER_FILES
     llimagej2coj.h
     )
 
-set_source_files_properties(${llimagej2coj_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llimagej2coj_SOURCE_FILES ${llimagej2coj_HEADER_FILES})
 
 add_library (llimagej2coj ${llimagej2coj_SOURCE_FILES})
 
-target_link_libraries(
-    llimagej2coj
-    llcommon
-    ${OPENJPEG_LIBRARIES}
+target_link_libraries( llimagej2coj
+        llcommon
+        llimage
+        ll::openjpeg
     )
 
diff --git a/indra/llinventory/CMakeLists.txt b/indra/llinventory/CMakeLists.txt
index a37b3ca65f39811ff1b507d1b5e8e41ed61af9b3..bed02d2f4e7943690127e6f32e9bbbc9844540d7 100644
--- a/indra/llinventory/CMakeLists.txt
+++ b/indra/llinventory/CMakeLists.txt
@@ -5,17 +5,6 @@ project(llinventory)
 include(00-Common)
 include(LLCommon)
 include(LLCoreHttp)
-include(LLMath)
-include(LLMessage)
-include(LLFileSystem)
-include(LLXML)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
 
 set(llinventory_SOURCE_FILES
     llcategory.cpp
@@ -65,24 +54,12 @@ set(llinventory_HEADER_FILES
     lluserrelations.h
     )
 
-set_source_files_properties(${llinventory_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llinventory_SOURCE_FILES ${llinventory_HEADER_FILES})
 
 add_library (llinventory ${llinventory_SOURCE_FILES})
 
-target_link_libraries(
-    llinventory
-    llcommon
-    )
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0")  
-  target_precompile_headers(llinventory
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
+target_link_libraries( llinventory llcommon llmath llmessage llxml )
+target_include_directories( llinventory  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 #add unit tests
 if (LL_TESTS)
@@ -93,7 +70,7 @@ if (LL_TESTS)
     LL_ADD_PROJECT_UNIT_TESTS(llinventory "${llinventory_TEST_SOURCE_FILES}")
 
     #set(TEST_DEBUG on)
-    set(test_libs llinventory ${LLMESSAGE_LIBRARIES} ${LLFILESYSTEM_LIBRARIES} ${LLCOREHTTP_LIBRARIES} ${LLMATH_LIBRARIES} ${LLCOMMON_LIBRARIES} ${WINDOWS_LIBRARIES})
+    set(test_libs llinventory llmath llcorehttp llfilesystem )
     LL_ADD_INTEGRATION_TEST(inventorymisc "" "${test_libs}")
     LL_ADD_INTEGRATION_TEST(llparcel "" "${test_libs}")
 endif (LL_TESTS)
diff --git a/indra/llinventory/llparcel.cpp b/indra/llinventory/llparcel.cpp
index 87b9df88857131b69a0010937ba9ef0f6f96263f..f3eda2f83a77b5dbd3eb7575913cc3c997f8339c 100644
--- a/indra/llinventory/llparcel.cpp
+++ b/indra/llinventory/llparcel.cpp
@@ -1265,5 +1265,5 @@ U32 LLParcel::countExperienceKeyType( U32 type )
 	return std::count_if(
 		boost::begin(mExperienceKeys | boost::adaptors::map_values), 
 		boost::end(mExperienceKeys | boost::adaptors::map_values), 
-        [type](U32 v) { return v == type; });
+		[type](U32 key){ return (key == type); });
 }
diff --git a/indra/llkdu/CMakeLists.txt b/indra/llkdu/CMakeLists.txt
index 64c5173dfdba8255b80f7851585168cf08b2174d..48e932f468657280b33868d2b849c6879aeb1ac0 100644
--- a/indra/llkdu/CMakeLists.txt
+++ b/indra/llkdu/CMakeLists.txt
@@ -13,15 +13,6 @@ include(00-Common)
 include(LLCommon)
 include(LLImage)
 include(LLKDU)
-include(LLMath)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${KDU_INCLUDE_DIR}
-    ${LLKDU_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    )
 
 set(llkdu_SOURCE_FILES
     llimagej2ckdu.cpp
@@ -30,14 +21,10 @@ set(llkdu_SOURCE_FILES
 
 set(llkdu_HEADER_FILES
     CMakeLists.txt
-    
     llimagej2ckdu.h
     llkdumem.h
     )
 
-set_source_files_properties(${llkdu_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llkdu_SOURCE_FILES ${llkdu_HEADER_FILES})
 
 # Our KDU package is built with KDU_X86_INTRINSICS in its .vcxproj file.
@@ -51,14 +38,16 @@ set_source_files_properties(${llkdu_SOURCE_FILES}
 if (USE_KDU)
   add_library (llkdu ${llkdu_SOURCE_FILES})
 
-  target_link_libraries(llkdu
-    ${KDU_LIBRARY}
-    llcommon)
+  target_link_libraries(llkdu ll::kdu llimage llcommon)
+  target_include_directories( llkdu  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
   target_compile_definitions(llkdu PRIVATE -DKDU_X86_INTRINSICS -DKDU_NO_THREADS -DKDU_NO_AVX -DKDU_NO_AVX2)
 
   # Add tests
-  if (LL_TESTS)
+  # ND: llkdu tests are very strange as they include stubs for KDU classes/methods
+  # if not having access to the right KDU version this test will fail to compile, incidentally I do not
+  # have access to a matching version of KDU and thus cannot get this tests to compile
+  if (LL_TESTS_KDU)
     include(LLAddBuildTest)
     include(Tut)
     SET(llkdu_TEST_SOURCE_FILES
@@ -69,11 +58,12 @@ if (USE_KDU)
       llkdumem.h
       lltut.h
       )
-    SET(llkdu_test_additional_INCLUDE_DIRS
-      ${KDU_INCLUDE_DIR}
-      ${LLKDU_INCLUDE_DIRS}
-    )
+
+    get_property( llimage_include_dir TARGET llimage PROPERTY INTERFACE_INCLUDE_DIRECTORIES )
+    set_property( SOURCE ${llkdu_TEST_SOURCE_FILES} PROPERTY LL_TEST_ADDITIONAL_LIBRARIES  ll::kdu llcommon)
+    set_property( SOURCE ${llkdu_TEST_SOURCE_FILES} PROPERTY LL_TEST_ADDITIONAL_INCLUDE_DIRS ${llimage_include_dir})
+
     LL_ADD_PROJECT_UNIT_TESTS(llkdu "${llkdu_TEST_SOURCE_FILES}")
-  endif (LL_TESTS)
+  endif (LL_TESTS_KDU)
 
 endif (USE_KDU)
diff --git a/indra/llmath/CMakeLists.txt b/indra/llmath/CMakeLists.txt
index 444af803e5cca2cf50c1115c0353fe0b5cd122e0..8974b4e9ece1659ccc7f74b1fdf5003b0df4f857 100644
--- a/indra/llmath/CMakeLists.txt
+++ b/indra/llmath/CMakeLists.txt
@@ -4,17 +4,9 @@ project(llmath)
 
 include(00-Common)
 include(LLCommon)
-include(LLMeshOptimizer)
 include(LLMath)
 include(Boost)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLMESHOPTIMIZER_INCLUDE_DIRS}
-    )
-
 set(llmath_SOURCE_FILES
     llbbox.cpp
     llbboxlocal.cpp
@@ -105,27 +97,12 @@ set(llmath_HEADER_FILES
     xform.h
     )
 
-set_source_files_properties(${llmath_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llmath_SOURCE_FILES ${llmath_HEADER_FILES})
 
 add_library (llmath ${llmath_SOURCE_FILES})
 
-target_link_libraries(llmath
-    PRIVATE
-    meshoptimizer
-    PUBLIC
-    ${LLCOMMON_LIBRARIES}
-    ${LLMESHOPTIMIZER_LIBRARIES}
-    )
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llmath
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
+target_link_libraries(llmath llcommon meshoptimizer)
+target_include_directories( llmath  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 # Add tests
 if (LL_TESTS)
@@ -140,15 +117,11 @@ if (LL_TESTS)
     v4color.cpp
     v4coloru.cpp
     )
-  set_source_files_properties(
-    ${llmath_TEST_SOURCE_FILES}
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_STACKTRACE_LIBRARY};${BOOST_THREAD_LIBRARY}"
-  )
+
   LL_ADD_PROJECT_UNIT_TESTS(llmath "${llmath_TEST_SOURCE_FILES}")
 
   # INTEGRATION TESTS
-  set(test_libs llmath llcommon ${LLCOMMON_LIBRARIES} ${WINDOWS_LIBRARIES})
+  set(test_libs llmath llcommon)
   # TODO: Some of these need refactoring to be proper Unit tests rather than Integration tests.
   LL_ADD_INTEGRATION_TEST(alignment "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llbbox llbbox.cpp "${test_libs}")
diff --git a/indra/llmeshoptimizer/CMakeLists.txt b/indra/llmeshoptimizer/CMakeLists.txt
index 652fe6ed6f3d39dd3f3256300244ea3c254fbf64..3593fbb2ae917e96a5fa85e72334d4b9e18290bb 100644
--- a/indra/llmeshoptimizer/CMakeLists.txt
+++ b/indra/llmeshoptimizer/CMakeLists.txt
@@ -2,42 +2,33 @@
 
 project(llmeshoptimizer)
 
-include(MESHOPTIMIZER)
+include(Meshoptimizer)
 
 include(00-Common)
 include(LLCommon)
 include(LLMath)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESHOPTIMIZER_INCLUDE_DIR}
-    ${LIBS_PREBUILT_DIR}/include  #access to boost headers, needed for LLError
-    )
-
 set(llmeshoptimizer_SOURCE_FILES
-    llmeshoptimizer.cpp
-    )
+        llmeshoptimizer.cpp
+        )
 
 set(llmeshoptimizer_HEADER_FILES
-    CMakeLists.txt
-
-    llmeshoptimizer.h
-    )
+        CMakeLists.txt
+        llmeshoptimizer.h
+        )
 
 set_source_files_properties(${llmeshoptimizer_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
+        PROPERTIES HEADER_FILE_ONLY TRUE)
 
 list(APPEND llmeshoptimizer_SOURCE_FILES ${llmeshoptimizer_HEADER_FILES})
 
-#if (USE_MESHOPT)
-  add_library (llmeshoptimizer ${llmeshoptimizer_SOURCE_FILES})
+add_library (llmeshoptimizer ${llmeshoptimizer_SOURCE_FILES})
+target_include_directories( llmeshoptimizer INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
+
+target_link_libraries(llmeshoptimizer
+        llcommon
+        llmath
+        meshoptimizer)
 
-  target_link_libraries(llmeshoptimizer
-    ${LLCOMMON_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    meshoptimizer)
-  
-  # Add tests
+# Add tests
 
-#endif (USE_MESHOPT)
diff --git a/indra/llmessage/CMakeLists.txt b/indra/llmessage/CMakeLists.txt
index dac96a655d12af815e427052b8cf4c1cd9fc262b..197cc16fedb27f4d83d0c2c8a213f221e76719bf 100644
--- a/indra/llmessage/CMakeLists.txt
+++ b/indra/llmessage/CMakeLists.txt
@@ -9,22 +9,9 @@ include(NGHTTP2)
 include(LLAddBuildTest)
 include(LLCommon)
 include(LLCoreHttp)
-include(LLMath)
-include(LLMessage)
-include(LLFileSystem)
 include(LLAddBuildTest)
 include(Tut)
 
-include_directories (${CMAKE_CURRENT_SOURCE_DIR})
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOREHTTP_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    )
-
 set(llmessage_SOURCE_FILES
     llaescipher.cpp
     llassetstorage.cpp
@@ -195,54 +182,19 @@ set(llmessage_HEADER_FILES
     sound_ids.h
     )
 
-set_source_files_properties(${llmessage_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llmessage_SOURCE_FILES ${llmessage_HEADER_FILES})
 
 add_library (llmessage ${llmessage_SOURCE_FILES})
 
-if (LINUX)
-target_link_libraries(
-  llmessage
-  ${CURL_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${LLFILESYSTEM_LIBRARIES}
-  ${LLMATH_LIBRARIES}
-  ${OPENSSL_LIBRARIES}
-  ${CRYPTO_LIBRARIES}
-  ${NGHTTP2_LIBRARIES}
-  ${XMLRPCEPI_LIBRARIES}
-  ${LLCOREHTTP_LIBRARIES}
-  ${BOOST_FIBER_LIBRARY}
-  ${BOOST_CONTEXT_LIBRARY}
-  ${BOOST_SYSTEM_LIBRARY}
-  rt
-  )
-else (LINUX)
 target_link_libraries(
-  llmessage
-  ${CURL_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${LLFILESYSTEM_LIBRARIES}
-  ${LLMATH_LIBRARIES}
-  ${OPENSSL_LIBRARIES}
-  ${CRYPTO_LIBRARIES}
-  ${NGHTTP2_LIBRARIES}
-  ${XMLRPCEPI_LIBRARIES}
-  ${LLCOREHTTP_LIBRARIES}
-  ${BOOST_FIBER_LIBRARY}
-  ${BOOST_CONTEXT_LIBRARY}
-  ${BOOST_SYSTEM_LIBRARY}
-  )
-endif(LINUX)
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llmessage
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
+        llmessage
+        llcommon
+        llfilesystem
+        llmath
+        llcorehttp
+        ll::xmlrpc-epi
+)
+target_include_directories( llmessage  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 # tests
 if (LL_TESTS)
@@ -252,39 +204,18 @@ if (LL_TESTS)
     lltrustedmessageservice.cpp
     lltemplatemessagedispatcher.cpp
     )
+  set_property( SOURCE ${llmessage_TEST_SOURCE_FILES} PROPERTY LL_TEST_ADDITIONAL_LIBRARIES llmath llcorehttp)
   LL_ADD_PROJECT_UNIT_TESTS(llmessage "${llmessage_TEST_SOURCE_FILES}")
 
-  
   #    set(TEST_DEBUG on)
-  
-if (LINUX)
-  set(test_libs
-    ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${CURL_LIBRARIES}
-    ${NGHTTP2_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    rt
-    )
-else (LINUX)
+
   set(test_libs
-    ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${CURL_LIBRARIES}
-    ${NGHTTP2_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    )
-endif(LINUX)
+          llfilesystem
+          llmath
+          llcorehttp
+          llmessage
+          llcommon
+          )
 
   #LL_ADD_INTEGRATION_TEST(llavatarnamecache "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llhost "" "${test_libs}")
diff --git a/indra/llmessage/llfiltersd2xmlrpc.cpp b/indra/llmessage/llfiltersd2xmlrpc.cpp
index 075338fd5622e7091686104a731f1e8cbe7eae91..990ccb7ec22491ff8d2731829f770b78fb67347c 100644
--- a/indra/llmessage/llfiltersd2xmlrpc.cpp
+++ b/indra/llmessage/llfiltersd2xmlrpc.cpp
@@ -78,7 +78,13 @@
 
 #include <sstream>
 #include <iterator>
+
+#ifdef LL_USESYSTEMLIBS
+#include <xmlrpc.h>
+#else
 #include <xmlrpc-epi/xmlrpc.h>
+#endif
+
 #include "apr_base64.h"
 
 #include "llbuffer.h"
diff --git a/indra/llmessage/llioutil.h b/indra/llmessage/llioutil.h
index beab086f552d5ad99d8eb8d9ad258037808a340d..949f7c921fa139a5b730564aeefee38aebdc0533 100644
--- a/indra/llmessage/llioutil.h
+++ b/indra/llmessage/llioutil.h
@@ -147,7 +147,7 @@ class LLIOAddChain : public LLIOPipe
  * }
  * </code>
  */
-class LLChangeChannel //: public unary_function<T, void>
+class LLChangeChannel
 {
 public:
 	/** 
diff --git a/indra/llmessage/llmessagethrottle.cpp b/indra/llmessage/llmessagethrottle.cpp
index 8ceeb39f8ddcb95b57ec19330859945f4f71d6f1..d24eb9b5e81e48766f214d2adf8ad187e15fe381 100644
--- a/indra/llmessage/llmessagethrottle.cpp
+++ b/indra/llmessage/llmessagethrottle.cpp
@@ -98,9 +98,8 @@ BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg
 	LLMessageThrottleEntry entry(hash, LLFrameTimer::getTotalTime());
 
 	// Check if this message is already in the list.
-	message_list_iterator_t found = std::find_if(message_list->begin(), message_list->end(),
-												 [&entry](const message_list_t::value_type& e) { return e.getHash() == entry.getHash(); });
-
+ 	message_list_iterator_t found = std::search_n(message_list->begin(), message_list->end(),
+ 												  1, entry, eq_message_throttle_entry);
 	if (found == message_list->end())
 	{
 		// This message was not found.  Add it to the list.
@@ -127,9 +126,8 @@ BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, c
 	LLMessageThrottleEntry entry(hash, LLFrameTimer::getTotalTime());
 
 	// Check if this message is already in the list.
-	message_list_iterator_t found = std::find_if(message_list->begin(), message_list->end(),
-												 [&entry](const message_list_t::value_type& e) { return e.getHash() == entry.getHash(); });
-	
+	message_list_iterator_t found = std::search_n(message_list->begin(), message_list->end(),
+												  1, entry, eq_message_throttle_entry);
 	if (found == message_list->end())
 	{
 		// This message was not found.  Add it to the list.
diff --git a/indra/llmessage/llregionflags.h b/indra/llmessage/llregionflags.h
index c13f39df9bda93e0cc263e72e1e3cc24252840d5..8548ed51e74b6cd455c189dc6a9bb8371bd94a62 100644
--- a/indra/llmessage/llregionflags.h
+++ b/indra/llmessage/llregionflags.h
@@ -89,6 +89,8 @@ const U64 REGION_FLAGS_ALLOW_VOICE = (1 << 28);
 const U64 REGION_FLAGS_BLOCK_PARCEL_SEARCH = (1 << 29);
 const U64 REGION_FLAGS_DENY_AGEUNVERIFIED	= (1 << 30);
 
+const U64 REGION_FLAGS_DENY_BOTS = (1 << 31);
+
 const U64 REGION_FLAGS_DEFAULT = REGION_FLAGS_ALLOW_LANDMARK |
 								 REGION_FLAGS_ALLOW_SET_HOME |
                                  REGION_FLAGS_ALLOW_PARCEL_CHANGES |
diff --git a/indra/llmessage/llthrottle.cpp b/indra/llmessage/llthrottle.cpp
index 935af2aa5a551b04c45b54cc6d8bc637c296d664..e659414e8c7bbbf258f0ab00aa01c0137865e44c 100644
--- a/indra/llmessage/llthrottle.cpp
+++ b/indra/llmessage/llthrottle.cpp
@@ -435,12 +435,6 @@ BOOL LLThrottleGroup::dynamicAdjust()
 		{
 			channel_over_nominal[i] = FALSE;
 		}
-
-		//if (total)
-		//{
-		//	LL_INFOS() << i << ": B" << channel_busy[i] << " I" << channel_idle[i] << " N" << channel_over_nominal[i];
-		//	LL_CONT << " Nom: " << mNominalBPS[i] << " Cur: " << mCurrentBPS[i] << " BS: " << mBitsSentHistory[i] << LL_ENDL;
-		//}
 	}
 
 	if (channels_busy)
diff --git a/indra/llplugin/CMakeLists.txt b/indra/llplugin/CMakeLists.txt
index c62cd8e7a6e1bf9fb554d9f9e90bb3bae2cdeb57..9ffa588da3684f714e68affdd642a761cd786393 100644
--- a/indra/llplugin/CMakeLists.txt
+++ b/indra/llplugin/CMakeLists.txt
@@ -6,26 +6,7 @@ include(00-Common)
 include(CURL)
 include(LLCommon)
 include(LLImage)
-include(LLMath)
-include(LLMessage)
-include(LLRender)
-include(LLXML)
 include(LLWindow)
-include(Boost)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llplugin_SOURCE_FILES
     llpluginclassmedia.cpp
@@ -39,7 +20,6 @@ set(llplugin_SOURCE_FILES
 
 set(llplugin_HEADER_FILES
     CMakeLists.txt
-
     llpluginclassmedia.h
     llpluginclassmediaowner.h
     llplugininstance.h
@@ -51,25 +31,10 @@ set(llplugin_HEADER_FILES
     llpluginsharedmemory.h
     )
 
-set_source_files_properties(${llplugin_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llplugin_SOURCE_FILES ${llplugin_HEADER_FILES})
 
 add_library (llplugin ${llplugin_SOURCE_FILES})
-
-target_link_libraries(llplugin PUBLIC     
-    ${LLCOMMON_LIBRARIES}
-    )
-
-set_target_properties(llplugin PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llplugin
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
-
+target_include_directories( llplugin  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
+target_link_libraries( llplugin llcommon llmath llrender llmessage )
 add_subdirectory(slplugin)
 
diff --git a/indra/llplugin/llpluginprocessparent.cpp b/indra/llplugin/llpluginprocessparent.cpp
index ef9a315864cd92bbc7bb835ed4cfea58a98f836f..5ac1628d03f2dd92a0da739c2162c06b1edb0728 100644
--- a/indra/llplugin/llpluginprocessparent.cpp
+++ b/indra/llplugin/llpluginprocessparent.cpp
@@ -159,6 +159,11 @@ LLPluginProcessParent::~LLPluginProcessParent()
     {   // If we are quitting, the network sockets will already have been destroyed.
         killSockets();
     }
+
+    if (mPolling.connected())
+    {
+        mPolling.disconnect();
+    }
 }
 
 /*static*/
diff --git a/indra/llplugin/slplugin/CMakeLists.txt b/indra/llplugin/slplugin/CMakeLists.txt
index 9a3ee79eff7f1c86b82b11c3ceb0140fc7499656..ffe005c33ad3fe46383e9fe1cd02691117a42a0c 100644
--- a/indra/llplugin/slplugin/CMakeLists.txt
+++ b/indra/llplugin/slplugin/CMakeLists.txt
@@ -2,25 +2,8 @@ project(SLPlugin)
 
 include(00-Common)
 include(LLCommon)
-include(LLPlugin)
 include(Linking)
 include(PluginAPI)
-include(LLMessage)
-
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
-if (DARWIN)
-    include(CMakeFindFrameworks)
-    find_library(COCOA_LIBRARY Cocoa)
-endif (DARWIN)
-
 
 ### SLPlugin
 
@@ -37,9 +20,6 @@ if (DARWIN)
   )
 endif (DARWIN)
 
-set_source_files_properties(${SLPlugin_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 if (SLPlugin_HEADER_FILES)
   list(APPEND SLPlugin_SOURCE_FILES ${SLPlugin_HEADER_FILES})
 endif (SLPlugin_HEADER_FILES)
@@ -51,11 +31,11 @@ add_executable(SLPlugin
     )
 
 target_link_libraries(SLPlugin
-  ${LLPLUGIN_LIBRARIES}
-  ${LLMESSAGE_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${PLUGIN_API_WINDOWS_LIBRARIES}
-)
+        llplugin
+        llmessage
+        llcommon
+        ll::pluginlibraries
+        )
 
 if (WINDOWS)
   target_link_libraries(SLPlugin wer)
@@ -86,6 +66,6 @@ elseif (DARWIN)
     COMMAND mkdir
     ARGS
       -p
-      ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/SLPlugin.app/Contents/Resources
+      ${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/SLPlugin.app/Contents/Resources
   )
 endif ()
diff --git a/indra/llprimitive/CMakeLists.txt b/indra/llprimitive/CMakeLists.txt
index 4b514505bae69155a8811a14bd421e6a6c08853b..d69cd958a01dd1cad7bda5302227c52b207cbeb4 100644
--- a/indra/llprimitive/CMakeLists.txt
+++ b/indra/llprimitive/CMakeLists.txt
@@ -4,27 +4,10 @@ project(llprimitive)
 
 include(00-Common)
 include(LLCommon)
-include(LLMath)
-include(LLMessage)
 include(LLCoreHttp)
-include(LLXML)
 include(LLPhysicsExtensions)
-include(LLCharacter)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LIBS_PREBUILT_DIR}/include/collada
-    ${LIBS_PREBUILT_DIR}/include/collada/1.4
-    ${LLCHARACTER_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    ${LLPHYSICSEXTENSIONS_INCLUDE_DIRS}
-    )
+include(LLPrimitive)
+include(GLH)
 
 set(llprimitive_SOURCE_FILES
     lldaeloader.cpp
@@ -64,32 +47,24 @@ set(llprimitive_HEADER_FILES
     material_codes.h
     object_flags.h
     )
-        
-set_source_files_properties(${llprimitive_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
 
 list(APPEND llprimitive_SOURCE_FILES ${llprimitive_HEADER_FILES})
 
 add_library (llprimitive ${llprimitive_SOURCE_FILES})
+target_include_directories( llprimitive  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(llprimitive
-    ${LLCOMMON_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLPHYSICSEXTENSIONS_LIBRARIES}
-    ${LLCHARACTER_LIBRARIES}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    )
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llprimitive
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
+        llcommon
+        llmath
+        llmessage
+        llcorehttp
+        llxml
+        llcharacter
+        llphysicsextensions_impl
+        ll::colladadom
+        ll::pcre
+        ll::glh_linear
+        )
 
 #add unit tests
 if (LL_TESTS)
diff --git a/indra/llrender/CMakeLists.txt b/indra/llrender/CMakeLists.txt
index ceb491b3c2777c025d5274a2f2378d0a990c6db4..60bae4a7eb0acdfe77c336c684bc9221f79dde75 100644
--- a/indra/llrender/CMakeLists.txt
+++ b/indra/llrender/CMakeLists.txt
@@ -8,26 +8,7 @@ include(SDL2)
 include(FreeType)
 include(LLCommon)
 include(LLImage)
-include(LLMath)
-include(LLRender)
 include(LLWindow)
-include(LLXML)
-include(LLFileSystem)
-
-include_directories(
-    ${FREETYPE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llrender_SOURCE_FILES
     llcubemap.cpp
@@ -80,9 +61,6 @@ set(llrender_HEADER_FILES
     llglcommonfunc.h
     )
 
-set_source_files_properties(${llrender_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llrender_SOURCE_FILES ${llrender_HEADER_FILES})
 
 if (BUILD_HEADLESS)
@@ -95,41 +73,29 @@ if (BUILD_HEADLESS)
       )
 
   target_link_libraries(llrenderheadless
-    ${LLCOMMON_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLRENDER_HEADLESS_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLWINDOW_HEADLESS_LIBRARIES}
-    ${OPENGL_HEADLESS_LIBRARIES})
-
+          llcommon
+          llimage
+          llmath
+          llrender
+          llxml
+          llfilesystem
+          )
 endif (BUILD_HEADLESS)
 
 add_library (llrender ${llrender_SOURCE_FILES})
-
-set_target_properties(llrender PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
+target_include_directories( llrender  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
-target_link_libraries(llrender 
-    ${LLCOMMON_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLWINDOW_LIBRARIES}
-    ${FREETYPE_LIBRARIES}
-    ${OPENGL_LIBRARIES})
+target_link_libraries(llrender
+        llcommon
+        llimage
+        llmath
+        llfilesystem
+        llxml
+        llwindow
+        ll::freetype
+        OpenGL::GL
+        OpenGL::GLU
+        )
 
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llrender
-    PRIVATE
-    [["linden_common.h"]]
-    llgltypes.h
-    <map>
-    <list>
-    <string>
-    <boost/unordered/unordered_flat_map.hpp>
-    )
-endif()
diff --git a/indra/llrender/llfontregistry.cpp b/indra/llrender/llfontregistry.cpp
index bc1a2f888709813f5b31dccb90aa57c4f5112525..9750bd4fa1e8e30173cdaa37fd47486ec7ae1c61 100644
--- a/indra/llrender/llfontregistry.cpp
+++ b/indra/llrender/llfontregistry.cpp
@@ -239,7 +239,7 @@ std::string currentOsName()
 	return "Windows";
 #elif LL_DARWIN
 	return "Mac";
-#elif LL_SDL || LL_MESA_HEADLESS
+#elif LL_LINUX
 	return "Linux";
 #else
 	return "";
diff --git a/indra/llrender/llglheaders.h b/indra/llrender/llglheaders.h
index 46beb46a6a38fd69df91f828faccfe82791ad56d..cf19b35d9a73fa0a68a606efe33cc3bd265e0f6a 100644
--- a/indra/llrender/llglheaders.h
+++ b/indra/llrender/llglheaders.h
@@ -293,11 +293,6 @@ extern PFNGLGETSTRINGIPROC glGetStringi;
 # include "GL/glh_extensions.h"
 # undef __APPLE__
 
-/* Although SDL very likely ends up calling glXGetProcAddress() itself,
-   if we use SDL_GL_GetProcAddress() then we get bogus addresses back on
-   some systems.  Weird. */
-/*# include "SDL/SDL.h"
-  # define GLH_EXT_GET_PROC_ADDRESS(p) SDL_GL_GetProcAddress(p) */
 #define GLX_GLXEXT_PROTOTYPES 1
 # include "GL/glx.h"
 # include "GL/glxext.h"
diff --git a/indra/llui/CMakeLists.txt b/indra/llui/CMakeLists.txt
index b9bd35edb242cc3c56aa5c9a5f0a7343de26b606..fc32d7b0d9f07300a781bcb22b563c2ea8847e46 100644
--- a/indra/llui/CMakeLists.txt
+++ b/indra/llui/CMakeLists.txt
@@ -6,33 +6,9 @@ include(00-Common)
 include(Hunspell)
 include(LLCommon)
 include(LLImage)
-include(LLInventory)
-include(LLMath)
-include(LLMessage)
 include(LLCoreHttp)
-include(LLRender)
 include(LLWindow)
 include(LLCoreHttp)
-include(LLFileSystem)
-include(LLXML)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOREHTTP_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLINVENTORY_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LIBS_PREBUILD_DIR}/include/hunspell
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llui_SOURCE_FILES
     llaccordionctrl.cpp
@@ -258,9 +234,6 @@ set(llui_HEADER_FILES
     llxyvector.h
     )
 
-set_source_files_properties(${llui_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 SET(llurlentry_TEST_DEPENDENCIES
     llurlmatch.cpp
     llurlregistry.cpp
@@ -274,22 +247,21 @@ set_source_files_properties(llurlentry.cpp
 list(APPEND llui_SOURCE_FILES ${llui_HEADER_FILES})
 
 add_library (llui ${llui_SOURCE_FILES})
+target_include_directories( llui  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 target_link_libraries(llui
-    ${LLRENDER_LIBRARIES}
-    ${LLWINDOW_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLINVENTORY_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLXUIXML_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${HUNSPELL_LIBRARY}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOMMON_LIBRARIES} # must be after llimage, llwindow, llrender
+        llrender
+        llwindow
+        llimage
+        llinventory
+        llmessage
+        llcorehttp
+        llfilesystem
+        llxml
+        llmath
+        ll::hunspell
+        llcommon
     )
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
@@ -330,27 +302,17 @@ endif()
 # Add tests
 if(LL_TESTS)
   include(LLAddBuildTest)
+  set(test_libs llmessage llcorehttp llxml llrender llcommon ll::hunspell)
+
   SET(llui_TEST_SOURCE_FILES
       llurlmatch.cpp
       )
+  set_property( SOURCE ${llui_TEST_SOURCE_FILES} PROPERTY LL_TEST_ADDITIONAL_LIBRARIES ${test_libs})
   LL_ADD_PROJECT_UNIT_TESTS(llui "${llui_TEST_SOURCE_FILES}")
   # INTEGRATION TESTS
-  set(test_libs 
-      llui
-      llmessage
-      llcorehttp
-      llcommon
-      ${HUNSPELL_LIBRARY}
-      ${LLCOMMON_LIBRARIES}
-      ${BOOST_FIBER_LIBRARY} 
-      ${BOOST_CONTEXT_LIBRARY} 
-      ${BOOST_SYSTEM_LIBRARY}
-      ${WINDOWS_LIBRARIES})
+
   if(NOT LINUX AND NOT DARWIN)
-    if(WINDOWS)
-      LL_ADD_INTEGRATION_TEST(llurlentry llurlentry.cpp "imm32;${test_libs}")
-    else(WINDOWS)
-      LL_ADD_INTEGRATION_TEST(llurlentry llurlentry.cpp "${test_libs}")
-    endif(WINDOWS)
+    set(test_libs llui llmessage llcorehttp llxml llrender llcommon ll::hunspell )
+    LL_ADD_INTEGRATION_TEST(llurlentry llurlentry.cpp "${test_libs}")
   endif()
 endif(LL_TESTS)
diff --git a/indra/llui/lldockablefloater.h b/indra/llui/lldockablefloater.h
index f35c8591b1dc101eb9e1f44a6334aff100d69cf1..2a618e1ccc1c5ec8527004558ef1457cb9736734 100644
--- a/indra/llui/lldockablefloater.h
+++ b/indra/llui/lldockablefloater.h
@@ -30,6 +30,7 @@
 #include "llerror.h"
 #include "llfloater.h"
 #include "lldockcontrol.h"
+#include <memory>
 
 /**
  * Represents floater that can dock.
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index dfa306a27e2b50812bdbc05872d65de95bd37687..bf9333ae680f9b0bd93dc84682df360edc674052 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -773,11 +773,13 @@ void LLFloater::closeFloater(bool app_quitting)
         }
 
 		// now close dependent floater
-		for(handle_set_iter_t dependent_it = mDependents.begin();
-			dependent_it != mDependents.end(); )
+		while(mDependents.size() > 0)
 		{
+            handle_set_iter_t dependent_it = mDependents.begin();
 			LLFloater* floaterp = dependent_it->get();
-            dependent_it = mDependents.erase(dependent_it);
+            // normally removeDependentFloater will do this, but in
+            // case floaterp is somehow invalid or orphaned, erase now
+            mDependents.erase(dependent_it);
             if (floaterp)
             {
                 floaterp->mDependeeHandle = LLHandle<LLFloater>();
diff --git a/indra/llui/llurlentry.cpp b/indra/llui/llurlentry.cpp
index 169d71f9b4886723740136b6c0b45a36159b4dc1..9f6adcff1b3f2f6b6cfbf2e177d2e9908eff07b9 100644
--- a/indra/llui/llurlentry.cpp
+++ b/indra/llui/llurlentry.cpp
@@ -198,6 +198,7 @@ bool LLUrlEntryBase::isWikiLinkCorrect(const std::string &labeled_url) const
     {
         return (chr == L'\u02D0') // "Modifier Letter Colon"
             || (chr == L'\uFF1A') // "Fullwidth Colon"
+            || (chr == L'\u2236') // "Ratio"
             || (chr == L'\uFE55'); // "Small Colon"
     },
         L'\u003A'); // Colon
diff --git a/indra/llui/llurlregistry.cpp b/indra/llui/llurlregistry.cpp
index 65d16627a4d0de04447897ee19079c3a22f20942..c91fc168b2addcc0e274f39785ab47fc930b60c3 100644
--- a/indra/llui/llurlregistry.cpp
+++ b/indra/llui/llurlregistry.cpp
@@ -175,7 +175,7 @@ bool LLUrlRegistry::findUrl(const std::string &text, LLUrlMatch &match, const LL
 	for (it = mUrlEntry.begin(); it != mUrlEntry.end(); ++it)
 	{
 		//Skip for url entry icon if content is not trusted
-		if(!is_content_trusted && (mUrlEntryIcon == *it))
+		if((mUrlEntryIcon == *it) && ((text.find("Hand") != std::string::npos) || !is_content_trusted))
 		{
 			continue;
 		}
diff --git a/indra/llwindow/CMakeLists.txt b/indra/llwindow/CMakeLists.txt
index 804a64e0372856407c866de0e6c378c7611a6536..9e1dab959fc11feb05a50966e6f8fe461f50ee7f 100644
--- a/indra/llwindow/CMakeLists.txt
+++ b/indra/llwindow/CMakeLists.txt
@@ -14,27 +14,9 @@ include(00-Common)
 include(DragDrop)
 include(LLCommon)
 include(LLImage)
-include(LLMath)
-include(LLRender)
-include(LLFileSystem)
 include(LLWindow)
-include(LLXML)
 include(UI)
-include(SDL2)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
+include(ViewerMiscLibs)
 
 set(llwindow_SOURCE_FILES
     llcursortypes.cpp
@@ -65,21 +47,21 @@ set(viewer_HEADER_FILES
     llmousehandler.h
     )
 
+set(llwindow_LINK_LIBRARIES
+        llcommon
+        llimage
+        llmath
+        llrender
+        llfilesystem
+        llxml
+        ll::glh_linear
+        ll::glext
+        ll::uilibraries
+        ll::SDL2
+        )
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 if (LINUX)
-  set(llwindow_LINK_LIBRARIES
-      ${LLCOMMON_LIBRARIES}
-      ${LLIMAGE_LIBRARIES}
-      ${LLMATH_LIBRARIES}
-      ${LLRENDER_LIBRARIES}
-      ${LLFILESYSTEM_LIBRARIES}
-      ${LLXML_LIBRARIES}
-      ${UI_LIBRARIES}     # for GTK
-      ${SDL_LIBRARIES}
-      ${FONTCONFIG_LIBRARIES}          # For FCInit and other FC* functions.
-      )
-
   list(APPEND viewer_SOURCE_FILES 
        llkeyboardsdl.cpp 
        llwindowsdl.cpp
@@ -146,18 +128,6 @@ if (WINDOWS)
        )
 endif (WINDOWS)
 
-if (SOLARIS)
-  list(APPEND llwindow_SOURCE_FILES
-       llwindowsolaris.cpp
-       )
-  list(APPEND llwindow_HEADER_FILES
-       llwindowsolaris.h
-       )
-endif (SOLARIS)
-
-set_source_files_properties(${llwindow_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 if (BUILD_HEADLESS)
   set(llwindowheadless_SOURCE_FILES
        llwindowmesaheadless.cpp
@@ -189,16 +159,10 @@ add_library (llwindow
   )
 
 target_link_libraries (llwindow llcommon ${llwindow_LINK_LIBRARIES})
+target_include_directories(llwindow INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
   
 if (DARWIN)
   include(CMakeFindFrameworks)
   find_library(CARBON_LIBRARY Carbon)
   target_link_libraries(llwindow ${CARBON_LIBRARY})
 endif (DARWIN)
-
-if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
-  target_precompile_headers(llwindow
-    PRIVATE
-    [["linden_common.h"]]
-    )
-endif()
diff --git a/indra/llwindow/llwindowmacosx-objc.mm b/indra/llwindow/llwindowmacosx-objc.mm
index 1828cf39adc9e93d55be45c9e51ffce6a0aadf41..b0c3bff64539d866bf3bdc0b2c04b6db91162ef2 100644
--- a/indra/llwindow/llwindowmacosx-objc.mm
+++ b/indra/llwindow/llwindowmacosx-objc.mm
@@ -213,6 +213,7 @@ NSWindowRef createNSWindow(int x, int y, int width, int height)
                                                       styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskResizable | NSWindowStyleMaskClosable | NSWindowStyleMaskMiniaturizable backing:NSBackingStoreBuffered defer:NO];
 	[window makeKeyAndOrderFront:nil];
 	[window setAcceptsMouseMovedEvents:TRUE];
+	[window setRestorable:FALSE]; // Viewer manages state from own settings
 	return (NSWindowRef)CFBridgingRetain(window);
 }
 
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 2b524ff12ff8cdc17d9f3ff52c8d751bfcecab6c..d856a26bdbe6cdcfbf4ae7603c5922d5f913a83e 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -3998,42 +3998,48 @@ void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
 
 	sLanguageTextInputAllowed = b;
 
-	if ( sLanguageTextInputAllowed )
-	{
-		// Allowing: Restore the previous IME status, so that the user has a feeling that the previous 
-		// text input continues naturally.  Be careful, however, the IME status is meaningful only during the user keeps 
-		// using same Input Locale (aka Keyboard Layout).
-		if (sWinIMEOpened && GetKeyboardLayout(0) == sWinInputLocale)
-		{
-			HIMC himc = LLWinImm::getContext(mWindowHandle);
-			LLWinImm::setOpenStatus(himc, TRUE);
-			LLWinImm::setConversionStatus(himc, sWinIMEConversionMode, sWinIMESentenceMode);
-			LLWinImm::releaseContext(mWindowHandle, himc);
-		}
-	}
-	else
-	{
-		// Disallowing: Turn off the IME so that succeeding key events bypass IME and come to us directly.
-		// However, do it after saving the current IME  status.  We need to restore the status when
-		//   allowing language text input again.
-		sWinInputLocale = GetKeyboardLayout(0);
-		sWinIMEOpened = LLWinImm::isIME(sWinInputLocale);
-		if (sWinIMEOpened)
-		{
-			HIMC himc = LLWinImm::getContext(mWindowHandle);
-			sWinIMEOpened = LLWinImm::getOpenStatus(himc);
-			if (sWinIMEOpened)
-			{
-				LLWinImm::getConversionStatus(himc, &sWinIMEConversionMode, &sWinIMESentenceMode);
+    if (sLanguageTextInputAllowed)
+    {
+        mWindowThread->post([=]()
+        {
+            // Allowing: Restore the previous IME status, so that the user has a feeling that the previous 
+            // text input continues naturally.  Be careful, however, the IME status is meaningful only during the user keeps 
+            // using same Input Locale (aka Keyboard Layout).
+            if (sWinIMEOpened && GetKeyboardLayout(0) == sWinInputLocale)
+            {
+                HIMC himc = LLWinImm::getContext(mWindowHandle);
+                LLWinImm::setOpenStatus(himc, TRUE);
+                LLWinImm::setConversionStatus(himc, sWinIMEConversionMode, sWinIMESentenceMode);
+                LLWinImm::releaseContext(mWindowHandle, himc);
+            }
+        });
+    }
+    else
+    {
+        mWindowThread->post([=]()
+        {
+            // Disallowing: Turn off the IME so that succeeding key events bypass IME and come to us directly.
+            // However, do it after saving the current IME  status.  We need to restore the status when
+            //   allowing language text input again.
+            sWinInputLocale = GetKeyboardLayout(0);
+            sWinIMEOpened = LLWinImm::isIME(sWinInputLocale);
+            if (sWinIMEOpened)
+            {
+                HIMC himc = LLWinImm::getContext(mWindowHandle);
+                sWinIMEOpened = LLWinImm::getOpenStatus(himc);
+                if (sWinIMEOpened)
+                {
+                    LLWinImm::getConversionStatus(himc, &sWinIMEConversionMode, &sWinIMESentenceMode);
 
-				// We need both ImmSetConversionStatus and ImmSetOpenStatus here to surely disable IME's 
-				// keyboard hooking, because Some IME reacts only on the former and some other on the latter...
-				LLWinImm::setConversionStatus(himc, IME_CMODE_NOCONVERSION, sWinIMESentenceMode);
-				LLWinImm::setOpenStatus(himc, FALSE);
-			}
-			LLWinImm::releaseContext(mWindowHandle, himc);
- 		}
-	}
+                    // We need both ImmSetConversionStatus and ImmSetOpenStatus here to surely disable IME's 
+                    // keyboard hooking, because Some IME reacts only on the former and some other on the latter...
+                    LLWinImm::setConversionStatus(himc, IME_CMODE_NOCONVERSION, sWinIMESentenceMode);
+                    LLWinImm::setOpenStatus(himc, FALSE);
+                }
+                LLWinImm::releaseContext(mWindowHandle, himc);
+            }
+        });
+    }
 }
 
 void LLWindowWin32::fillCandidateForm(const LLCoordGL& caret, const LLRect& bounds, 
@@ -4230,6 +4236,10 @@ void LLWindowWin32::handleStartCompositionMessage()
 
 void LLWindowWin32::handleCompositionMessage(const U32 indexes)
 {
+    if (!mPreeditor)
+    {
+        return;
+    }
 	BOOL needs_update = FALSE;
 	LLWString result_string;
 	LLWString preedit_string;
@@ -4528,7 +4538,7 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
 				LLWString context = find_context(wtext, preedit, preedit_length, &context_offset);
 				preedit -= context_offset;
 				preedit_length = llmin(preedit_length, (S32)context.length() - preedit);
-				if (preedit_length && preedit >= 0)
+				if (preedit_length > 0 && preedit >= 0)
 				{
 					// IMR_DOCUMENTFEED may be called when we have an active preedit.
 					// We should pass the context string *excluding* the preedit string.
diff --git a/indra/llxml/CMakeLists.txt b/indra/llxml/CMakeLists.txt
index 232e4e25861544556c5f4af2434e9d7f5a003ab4..ea499967c7bbe8c9e0a0b3ad6ccc5f34b3b1ff18 100644
--- a/indra/llxml/CMakeLists.txt
+++ b/indra/llxml/CMakeLists.txt
@@ -4,18 +4,6 @@ project(llxml)
 
 include(00-Common)
 include(LLCommon)
-include(LLMath)
-include(LLFileSystem)
-include(LLXML)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    )
-include_directories(
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(llxml_SOURCE_FILES
     llcontrol.cpp
@@ -33,20 +21,19 @@ set(llxml_HEADER_FILES
     llxmltree.h
     )
 
-set_source_files_properties(${llxml_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND llxml_SOURCE_FILES ${llxml_HEADER_FILES})
 
 add_library (llxml ${llxml_SOURCE_FILES})
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 target_link_libraries( llxml
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${EXPAT_LIBRARIES}
+        llfilesystem
+        llmath
+        llcommon
+        ll::expat
     )
+target_include_directories( llxml  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
+
 
 if(USE_PRECOMPILED_HEADERS AND ${CMAKE_VERSION} VERSION_GREATER "3.15.0") 
   target_precompile_headers(llxml
@@ -69,11 +56,10 @@ if (LL_TESTS)
 
     #    set(TEST_DEBUG on)
     set(test_libs
-      ${LLXML_LIBRARIES}
-      ${WINDOWS_LIBRARIES}
-      ${LLMATH_LIBRARIES}
-      ${LLCOMMON_LIBRARIES}
-      )
+            llxml
+            llmath
+            llcommon
+            )
 
     LL_ADD_INTEGRATION_TEST(llcontrol "" "${test_libs}")
 endif (LL_TESTS)
diff --git a/indra/media_plugins/base/CMakeLists.txt b/indra/media_plugins/base/CMakeLists.txt
index 3a0391dcd5e7dbe2b87e41620e9a6417d1dbc9ae..d1f37913ebc52466275d79e2422e10a080072065 100644
--- a/indra/media_plugins/base/CMakeLists.txt
+++ b/indra/media_plugins/base/CMakeLists.txt
@@ -5,25 +5,9 @@ project(media_plugin_base LANGUAGES CXX)
 include(00-Common)
 include(LLCommon)
 include(LLImage)
-include(LLPlugin)
-include(LLMath)
-include(LLRender)
 include(LLWindow)
 include(Linking)
 include(PluginAPI)
-include(OpenGL)
-
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
 
 
 ### media_plugin_base
@@ -40,10 +24,7 @@ set(media_plugin_base_HEADER_FILES
 
 add_library(media_plugin_base
     ${media_plugin_base_SOURCE_FILES}
-    )
-
-set_target_properties(media_plugin_base PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
+        )
 
-target_link_libraries(media_plugin_base PUBLIC
-    llcommon
-    )
\ No newline at end of file
+target_link_libraries( media_plugin_base llplugin )
+target_include_directories( media_plugin_base  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
diff --git a/indra/media_plugins/cef/CMakeLists.txt b/indra/media_plugins/cef/CMakeLists.txt
index 0d144fdb48111926abea92a6f99b7529e48c1a86..56846c83aa370390d55406c81777dfc6a124dee7 100644
--- a/indra/media_plugins/cef/CMakeLists.txt
+++ b/indra/media_plugins/cef/CMakeLists.txt
@@ -5,29 +5,12 @@ project(media_plugin_cef)
 include(Boost)
 include(00-Common)
 include(LLCommon)
-include(LLPlugin)
-include(LLMath)
-include(LLRender)
 include(LLWindow)
 include(Linking)
 include(PluginAPI)
-include(MediaPluginBase)
 
 include(CEFPlugin)
 
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${MEDIA_PLUGIN_BASE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${CEF_INCLUDE_DIR}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
 
 ### media_plugin_cef
 
@@ -39,13 +22,6 @@ set(media_plugin_cef_HEADER_FILES
     volume_catcher.h
     )
 
-set (media_plugin_cef_LINK_LIBRARIES
-  ${LLPLUGIN_LIBRARIES}
-  ${MEDIA_PLUGIN_BASE_LIBRARIES}
-  ${CEF_PLUGIN_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${PLUGIN_API_WINDOWS_LIBRARIES})
-
 # Select which VolumeCatcher implementation to use
 if (LINUX)
   if (PULSEAUDIO_FOUND)
@@ -53,14 +29,14 @@ if (LINUX)
   else (PULSEAUDIO_FOUND)
     list(APPEND media_plugin_cef_SOURCE_FILES dummy_volume_catcher.cpp)
   endif (PULSEAUDIO_FOUND)
-  list(APPEND media_plugin_webkit_LINK_LIBRARIES
+  list(APPEND media_plugin_cef_LINK_LIBRARIES
        ${UI_LIBRARIES}     # for glib/GTK
        )
 elseif (DARWIN)
   list(APPEND media_plugin_cef_SOURCE_FILES mac_volume_catcher_null.cpp)
   find_library(CORESERVICES_LIBRARY CoreServices)
   find_library(AUDIOUNIT_LIBRARY AudioUnit)
-  list(APPEND media_plugin_cef_LINK_LIBRARIES
+  set( media_plugin_cef_LINK_LIBRARIES
        ${CORESERVICES_LIBRARY}     # for Component Manager calls
        ${AUDIOUNIT_LIBRARY}        # for AudioUnit calls
   )
@@ -68,9 +44,6 @@ elseif (WINDOWS)
   list(APPEND media_plugin_cef_SOURCE_FILES windows_volume_catcher.cpp)
 endif (LINUX)
 
-set_source_files_properties(${media_plugin_cef_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND media_plugin_cef_SOURCE_FILES ${media_plugin_cef_HEADER_FILES})
 
 add_library(media_plugin_cef
@@ -81,7 +54,8 @@ add_library(media_plugin_cef
 set_target_properties(media_plugin_cef PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
 
 target_link_libraries(media_plugin_cef
-  ${media_plugin_cef_LINK_LIBRARIES}
+        media_plugin_base
+        ll::cef
 )
 
 if (WINDOWS)
diff --git a/indra/media_plugins/example/CMakeLists.txt b/indra/media_plugins/example/CMakeLists.txt
index a215381041fa5617a26d6ca88528e5ee9d4bf207..128ef641a00e9f187098d9ffe8aa81e985db2b4a 100644
--- a/indra/media_plugins/example/CMakeLists.txt
+++ b/indra/media_plugins/example/CMakeLists.txt
@@ -5,31 +5,12 @@ project(media_plugin_example)
 include(00-Common)
 include(LLCommon)
 include(LLImage)
-include(LLPlugin)
-include(LLMath)
-include(LLRender)
 include(LLWindow)
 include(Linking)
 include(PluginAPI)
-include(MediaPluginBase)
-include(OpenGL)
 
 include(ExamplePlugin)
 
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${MEDIA_PLUGIN_BASE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
-
 ### media_plugin_example
 
 set(media_plugin_example_SOURCE_FILES
@@ -41,16 +22,7 @@ add_library(media_plugin_example
     ${media_plugin_example_SOURCE_FILES}
     )
 
-set_target_properties(media_plugin_example PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
-
-target_link_libraries(media_plugin_example
-  ${LLPLUGIN_LIBRARIES}
-  ${MEDIA_PLUGIN_BASE_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${EXAMPLE_PLUGIN_LIBRARIES}
-  ${PLUGIN_API_WINDOWS_LIBRARIES}
-)
-
+target_link_libraries(media_plugin_example media_plugin_base )
 if (WINDOWS)
   set_target_properties(
     media_plugin_example
diff --git a/indra/media_plugins/gstreamer010/CMakeLists.txt b/indra/media_plugins/gstreamer010/CMakeLists.txt
index 068e7fc291c6cf35b9ebdf91995e1e277f9b776b..d5f129c7dcb1197217b76506b54b9d20da7efb5a 100644
--- a/indra/media_plugins/gstreamer010/CMakeLists.txt
+++ b/indra/media_plugins/gstreamer010/CMakeLists.txt
@@ -5,32 +5,14 @@ project(media_plugin_gstreamer010)
 include(00-Common)
 include(LLCommon)
 include(LLImage)
-include(LLPlugin)
 include(LLMath)
-include(LLRender)
 include(LLWindow)
 include(Linking)
 include(PluginAPI)
-include(MediaPluginBase)
 include(OpenGL)
 
 include(GStreamer010Plugin)
 
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${MEDIA_PLUGIN_BASE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${GSTREAMER010_INCLUDE_DIRS}
-    ${GSTREAMER010_PLUGINS_BASE_INCLUDE_DIRS}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
 ### media_plugin_gstreamer010
 
 set(media_plugin_gstreamer010_SOURCE_FILES
@@ -50,12 +32,7 @@ add_library(media_plugin_gstreamer010
     ${media_plugin_gstreamer010_SOURCE_FILES}
     )
 
-set_target_properties(media_plugin_gstreamer010 PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
-
 target_link_libraries(media_plugin_gstreamer010
-  ${LLPLUGIN_LIBRARIES}
-  ${MEDIA_PLUGIN_BASE_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${PLUGIN_API_WINDOWS_LIBRARIES}
-  ${GSTREAMER010_LIBRARIES}
-)
+        media_plugin_base
+        ll::gstreamer
+  )
diff --git a/indra/media_plugins/libvlc/CMakeLists.txt b/indra/media_plugins/libvlc/CMakeLists.txt
index 0eb91ea5e916275427895667ab6a347a4d5ffe2e..5273514dbd67ab0601671f4d9ab556e84874d9f0 100644
--- a/indra/media_plugins/libvlc/CMakeLists.txt
+++ b/indra/media_plugins/libvlc/CMakeLists.txt
@@ -5,32 +5,12 @@ project(media_plugin_libvlc)
 include(00-Common)
 include(LLCommon)
 include(LLImage)
-include(LLPlugin)
-include(LLMath)
-include(LLRender)
 include(LLWindow)
 include(Linking)
 include(PluginAPI)
-include(MediaPluginBase)
-include(OpenGL)
 
 include(LibVLCPlugin)
 
-include_directories(
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${MEDIA_PLUGIN_BASE_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${VLC_INCLUDE_DIRS}
-)
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    )
-
-
 ### media_plugin_libvlc
 
 set(media_plugin_libvlc_SOURCE_FILES
@@ -43,15 +23,10 @@ add_library(media_plugin_libvlc
     )
 
 target_link_libraries(media_plugin_libvlc
-  ${LLPLUGIN_LIBRARIES}
-  ${MEDIA_PLUGIN_BASE_LIBRARIES}
-  ${LLCOMMON_LIBRARIES}
-  ${VLC_LIBRARIES}
-  ${PLUGIN_API_WINDOWS_LIBRARIES}
+        media_plugin_base
+        ll::libvlc
 )
 
-set_target_properties(media_plugin_libvlc PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
-
 if (WINDOWS)
   set_target_properties(
     media_plugin_libvlc
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index e11af8ae6c619958c0beb5403c6ce348474c7938..a87f29e0b69bc5d13ce1050834f2a30a6ef8a3e0 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -24,25 +24,13 @@ include(LibXML2)
 include(LLAppearance)
 include(LLAudio)
 include(LLCA)
-include(LLCharacter)
 include(LLCommon)
 include(LLCoreHttp)
 include(LLImage)
-include(LLImageJ2COJ)
-include(LLInventory)
 include(LLKDU)
-include(LLLogin)
-include(LLMath)
-include(LLMeshOptimizer)
-include(LLMessage)
 include(LLPhysicsExtensions)
-include(LLPlugin)
 include(LLPrimitive)
-include(LLRender)
-include(LLUI)
-include(LLFileSystem)
 include(LLWindow)
-include(LLXML)
 include(NDOF)
 include(NVAPI)
 include(OPENAL)
@@ -54,12 +42,12 @@ include(TemplateCheck)
 include(ThreeJS)
 include(Tracy)
 include(UI)
-include(UnixInstall)
 include(ViewerMiscLibs)
 include(ViewerManager)
 include(VisualLeakDetector)
 include(ZLIBNG)
 include(URIPARSER)
+include(LLPrimitive)
 
 # Viewer Branding Assets
 use_prebuilt_binary(branding)
@@ -68,62 +56,29 @@ if (WINDOWS)
 endif()
 
 if( LLPHYSICSEXTENSIONS_SRC_DIR )
-  if (NOT HAVOK_TPV)
-    # When using HAVOK_TPV, the library is precompiled, so no need for this
-    add_subdirectory(${LLPHYSICSEXTENSIONS_SRC_DIR} llphysicsextensions)
-    target_link_libraries(${LLPHYSICSEXTENSIONS_LIBRARIES} llcommon)
-  endif (NOT HAVOK_TPV)
-endif( LLPHYSICSEXTENSIONS_SRC_DIR )
-
-include_directories(
-    ${CMAKE_CURRENT_SOURCE_DIR}
-    ${CMAKE_CURRENT_BINARY_DIR}
-    ${DBUSGLIB_INCLUDE_DIRS}
-    ${ZLIBNG_INCLUDE_DIRS}
-    ${LIBXML2_INCLUDE_DIRS}
-    ${LLAUDIO_INCLUDE_DIRS}
-    ${LLCHARACTER_INCLUDE_DIRS}
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOREHTTP_INCLUDE_DIRS}
-    ${LLPHYSICS_INCLUDE_DIRS}
-    ${LLIMAGE_INCLUDE_DIRS}
-    ${LLKDU_INCLUDE_DIRS}
-    ${LLINVENTORY_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESHOPTIMIZER_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLPLUGIN_INCLUDE_DIRS}
-    ${LLPRIMITIVE_INCLUDE_DIRS}
-    ${LLRENDER_INCLUDE_DIRS}
-    ${LLUI_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLWINDOW_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LLLOGIN_INCLUDE_DIRS}
-    "${LIBS_PREBUILT_DIR}/include/collada"
-    "${LIBS_PREBUILD_DIR}/include/hunspell"
-    ${OPENAL_INCLUDE_DIRS}
-    ${FREEALUT_INCLUDE_DIRS}
-    "${LIBS_PREBUILT_DIR}/include/collada/1.4"
-    ${LLAPPEARANCE_INCLUDE_DIRS}
-    ${DISCORD_INCLUDE_DIRS}
-    )
-
-if(USE_FMODSTUDIO)
-  include_directories(${FMODSTUDIO_INCLUDE_DIR})
-endif(USE_FMODSTUDIO)
-
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    ${LLPHYSICSEXTENSIONS_INCLUDE_DIRS}
-    )
-
-if (USE_SENTRY)
-  include_directories(AFTER
-    ${SENTRY_INCLUDE_DIRS}
-    )
-endif (USE_SENTRY)
+if (NOT HAVOK_TPV)
+   # When using HAVOK_TPV, the library is precompiled, so no need for this
+
+   # Stub and probably havok lib itself is a hack, autobuild loads a 3p that really is a source tarball
+   # which includes a CMakeList.txt and then this whole source tree gets pushed into out build ... :/
+   # To make matters worse there is a internal assumption about the structure of the viewers CMake layout,
+   # which means we need to duct tape this togther ...
+
+   add_subdirectory(${LLPHYSICSEXTENSIONS_SRC_DIR} llphysicsextensions)
+
+   # Another hack that works with newer cmake versions:
+   cmake_policy( SET CMP0079 NEW)
+   if( TARGET llphysicsextensionsstub )
+      target_link_libraries(llphysicsextensionsstub llcommon llmath)
+   endif()
+   if( TARGET llphysicsextensions )
+      target_link_libraries(llphysicsextensions llrender )
+      if (DARWIN)
+        target_compile_options( llphysicsextensions  PRIVATE -Wno-unused-local-typedef)
+      endif (DARWIN)
+   endif()
+endif (NOT HAVOK_TPV)
+endif()
 
 set(viewer_SOURCE_FILES
     alcinematicmode.cpp
@@ -1593,21 +1548,6 @@ if (DARWIN)
       PROPERTIES 
       SKIP_PRECOMPILE_HEADERS TRUE
       )
-
-  find_library(APPKIT_LIBRARY AppKit)
-  find_library(COCOA_LIBRARY Cocoa)
-  find_library(IOKIT_LIBRARY IOKit)
-  find_library(COREFOUNDATION_LIBRARY CoreFoundation)
-  find_library(COREAUDIO_LIBRARY CoreAudio)
-
-  set(viewer_LIBRARIES
-    ${COCOA_LIBRARY}
-    ${APPKIT_LIBRARY}
-    ${IOKIT_LIBRARY}
-    ${COREFOUNDATION_LIBRARY}
-    ${COREAUDIO_LIBRARY}
-    )
-
   # Add resource files to the project.
   set(viewer_RESOURCE_FILES
     macview.r
@@ -1620,12 +1560,7 @@ if (DARWIN)
     Japanese.lproj/language.txt
     Korean.lproj/language.txt
     )
-  set_source_files_properties(
-    ${viewer_RESOURCE_FILES}
-    PROPERTIES
-    HEADER_FILE_ONLY TRUE
-    #MACOSX_PACKAGE_LOCATION Resources #don't do this! this tells cmake to copy the files.
-    )
+
   SOURCE_GROUP("Resources" FILES ${viewer_RESOURCE_FILES})
   list(APPEND viewer_SOURCE_FILES ${viewer_RESOURCE_FILES})
 endif (DARWIN)
@@ -1637,9 +1572,6 @@ if (LINUX)
 	LIST(APPEND viewer_HEADER_FILES algamemode.h)
     SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--as-needed")
 
-    set(viewer_LIBRARIES
-        Xinerama
-        )
 endif (LINUX)
 
 if (WINDOWS)
@@ -1652,7 +1584,6 @@ if (WINDOWS)
          llappviewerwin32.h
          llwindebug.h
          )
-
     # Replace the icons with the appropriate ones for the channel
     # ('test' is the default)
     set(ICON_PATH "test")
@@ -1774,29 +1705,11 @@ if (WINDOWS)
 
     source_group("Resource Files" FILES ${viewer_RESOURCE_FILES})
 
-    if (NOT USESYSTEMLIBS)
-        list(APPEND viewer_SOURCE_FILES ${viewer_RESOURCE_FILES})
-    endif (NOT USESYSTEMLIBS)
+    list(APPEND viewer_SOURCE_FILES ${viewer_RESOURCE_FILES})
 
     set_source_files_properties(llappviewer.cpp PROPERTIES COMPILE_FLAGS /bigobj)
     set_source_files_properties(llviewermenu.cpp PROPERTIES COMPILE_FLAGS /bigobj)
 
-# see EXP-1765 - theory is opengl32.lib needs to be included before gdi32.lib (windows libs)
-    set(viewer_LIBRARIES
-        opengl32
-        ${WINDOWS_LIBRARIES}
-        comdlg32
-        dxguid
-        imm32
-        kernel32
-        odbc32
-        odbccp32
-        oleaut32
-        shell32
-        Vfw32
-        wer
-        winspool
-        )
 endif (WINDOWS)
 
 if (USE_OPENAL)
@@ -1886,9 +1799,7 @@ source_group("Character File" FILES ${viewer_CHARACTER_FILES})
 
 set_source_files_properties(${viewer_CHARACTER_FILES}
                             PROPERTIES HEADER_FILE_ONLY TRUE)
-if (NOT USESYSTEMLIBS)
-    list(APPEND viewer_SOURCE_FILES ${viewer_CHARACTER_FILES})
-endif (NOT USESYSTEMLIBS)
+list(APPEND viewer_SOURCE_FILES ${viewer_CHARACTER_FILES})
 
 set(viewer_MISC_FILES
     viewer_manifest.py
@@ -1910,15 +1821,9 @@ if (WINDOWS)
   list(APPEND viewer_SOURCE_FILES ${viewer_INSTALLER_FILES})
 endif (WINDOWS)
 
-if (USE_FMODSTUDIO)
-  set(FMODWRAPPER_LIBRARY ${FMODSTUDIO_LIBRARY})
-endif (USE_FMODSTUDIO)
 
 list(APPEND viewer_SOURCE_FILES ${viewer_HEADER_FILES})
 
-set_source_files_properties(${viewer_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 add_executable(${VIEWER_BINARY_NAME}
     WIN32
     MACOSX_BUNDLE
@@ -1988,8 +1893,13 @@ if (WINDOWS)
       # The following commented dependencies are determined at variably at build time. Can't do this here.
       ${CMAKE_SOURCE_DIR}/../etc/message.xml
       ${CMAKE_SOURCE_DIR}/../scripts/messages/message_template.msg
-      ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/openjp2.dll
-      ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/SLVoice.exe
+      ${SHARED_LIB_STAGING_DIR}/openjp2.dll
+      ${SHARED_LIB_STAGING_DIR}/libhunspell.dll
+      ${SHARED_LIB_STAGING_DIR}/uriparser.dll
+      #${SHARED_LIB_STAGING_DIR}/${LL_INTDIR}/SLVoice.exe
+      #${SHARED_LIB_STAGING_DIR}/${LL_INTDIR}/libsndfile-1.dll
+      #${SHARED_LIB_STAGING_DIR}/${LL_INTDIR}/vivoxoal.dll
+      ${AUTOBUILD_INSTALL_DIR}/ca-bundle.crt
       ${CMAKE_CURRENT_SOURCE_DIR}/licenses-win32.txt
       ${CMAKE_CURRENT_SOURCE_DIR}/featuretable.txt
       ${viewer_APPSETTINGS_FILES}
@@ -1998,15 +1908,15 @@ if (WINDOWS)
       )
 
     if (ADDRESS_SIZE EQUAL 64)
-        list(APPEND COPY_INPUT_DEPENDENCIES
-            ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/vivoxsdk_x64.dll
-            ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/ortp_x64.dll
-            )
+       list(APPEND COPY_INPUT_DEPENDENCIES
+               ${SHARED_LIB_STAGING_DIR}/vivoxsdk_x64.dll
+               ${SHARED_LIB_STAGING_DIR}/ortp_x64.dll
+               )
     else (ADDRESS_SIZE EQUAL 64)
-        list(APPEND COPY_INPUT_DEPENDENCIES
-            ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/vivoxsdk.dll
-            ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/ortp.dll
-            )
+       list(APPEND COPY_INPUT_DEPENDENCIES
+               ${SHARED_LIB_STAGING_DIR}/vivoxsdk.dll
+               ${SHARED_LIB_STAGING_DIR}/ortp.dll
+               )
     endif (ADDRESS_SIZE EQUAL 64)
 
     if (USE_CEF)
@@ -2021,11 +1931,10 @@ if (WINDOWS)
            )
     endif ()
 
-    if (USE_FMODSTUDIO)
+    if (TARGET ll::fmodstudio)
       if (GEN_IS_MULTI_CONFIG)
         list(APPEND COPY_INPUT_DEPENDENCIES
-            ${SHARED_LIB_STAGING_DIR}/Release/fmod.dll
-            ${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/fmod.dll
+           ${SHARED_LIB_STAGING_DIR}/fmod.dll
             ${SHARED_LIB_STAGING_DIR}/Debug/fmodL.dll
             )
       elseif (UPPERCASE_CMAKE_BUILD_TYPE MATCHES DEBUG)
@@ -2037,12 +1946,12 @@ if (WINDOWS)
             ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/fmod.dll
             )
       endif()
-    endif (USE_FMODSTUDIO)
+    endif ()
 
-    if (USE_OPENAL)
+    if (TARGET ll::openal)
       list(APPEND COPY_INPUT_DEPENDENCIES
-           ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/OpenAL32.dll
-           ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/alut.dll
+           ${SHARED_LIB_STAGING_DIR}/OpenAL32.dll
+           ${SHARED_LIB_STAGING_DIR}/alut.dll
           )
     endif ()
 
@@ -2058,15 +1967,14 @@ if (WINDOWS)
         "--sentry=${USE_SENTRY}"
         "--fmodstudio=${USE_FMODSTUDIO}"
         "--openal=${USE_OPENAL}"
-        "--kdu=${USE_KDU}"
         --build=${CMAKE_CURRENT_BINARY_DIR}
-        --buildtype=${CMAKE_BUILD_TYPE}
+        --buildtype=$<CONFIG>
         "--channel=${VIEWER_CHANNEL}"
         --configuration=${CMAKE_CFG_INTDIR}
-        --dest=${VIEWER_BUILD_DEST_DIR}
+        --dest=${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>
         --grid=${GRID}
         --source=${CMAKE_CURRENT_SOURCE_DIR}
-        --touch=${VIEWER_BUILD_DEST_DIR}/copy_touched.bat
+        --touch=${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/copy_touched.bat
         --versionfile=${CMAKE_CURRENT_BINARY_DIR}/viewer_version.txt
       DEPENDS
         ${CMAKE_CURRENT_SOURCE_DIR}/viewer_manifest.py
@@ -2126,15 +2034,14 @@ if (WINDOWS)
           "--sentry=${USE_SENTRY}"
           "--fmodstudio=${USE_FMODSTUDIO}"
           "--openal=${USE_OPENAL}"
-          "--kdu=${USE_KDU}"
           --build=${CMAKE_CURRENT_BINARY_DIR}
-          --buildtype=${CMAKE_BUILD_TYPE}
+              --buildtype=$<CONFIG>
           "--channel=${VIEWER_CHANNEL}"
           --configuration=${CMAKE_CFG_INTDIR}
-          --dest=${VIEWER_BUILD_DEST_DIR}
+              --dest=${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>
           --grid=${GRID}
           --source=${CMAKE_CURRENT_SOURCE_DIR}
-          --touch=${VIEWER_BUILD_DEST_DIR}/touched.bat
+              --touch=${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/touched.bat
           --versionfile=${CMAKE_CURRENT_BINARY_DIR}/viewer_version.txt
           --updateurl=${VIEWER_UPDATE_SERVICE}
           ${DELTA_GEN_SETTING}
@@ -2146,7 +2053,7 @@ if (WINDOWS)
         )
 
       add_custom_target(llpackage ALL DEPENDS
-        ${VIEWER_BUILD_DEST_DIR}/touched.bat
+              ${CMAKE_CFG_INTDIR}/touched.bat
         )
         # temporarily disable packaging of event_host until hg subrepos get
         # sorted out on the parabuild cluster...
@@ -2194,59 +2101,34 @@ endif (WINDOWS)
 # modern version.
 
 target_link_libraries(${VIEWER_BINARY_NAME}
-    ${PNG_PRELOAD_ARCHIVES}
-    ${ZLIBNG_PRELOAD_ARCHIVES}
-    ${URIPARSER_PRELOAD_ARCHIVES}
-    ${GOOGLE_PERFTOOLS_LIBRARIES}
-    ${LLAUDIO_LIBRARIES}
-    ${LLCHARACTER_LIBRARIES}
-    ${LLIMAGE_LIBRARIES}
-    ${LLINVENTORY_LIBRARIES}
-    ${LLMESHOPTIMIZER_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLPLUGIN_LIBRARIES}
-    ${LLPRIMITIVE_LIBRARIES}
-    ${LLRENDER_LIBRARIES}
-    ${FREETYPE_LIBRARIES}
-    ${LLUI_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLWINDOW_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${NDOF_LIBRARY}
-    ${NVAPI_LIBRARY}
-    ${HUNSPELL_LIBRARY}
-    ${viewer_LIBRARIES}
-    ${BOOST_PROGRAM_OPTIONS_LIBRARY}
-    ${BOOST_REGEX_LIBRARY}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_WAVE_LIBRARY}
-    ${DBUSGLIB_LIBRARIES}
-    ${OPENGL_LIBRARIES}
-    ${FMODWRAPPER_LIBRARY} # must come after LLAudio
-    ${SDL_LIBRARIES}
-    ${SMARTHEAP_LIBRARY}
-    ${UI_LIBRARIES}
-    ${WINDOWS_LIBRARIES}
-    ${EXPAT_LIBRARIES}
-    ${LIBXML2_LIBRARIES}
-    ${XMLRPCEPI_LIBRARIES}
-    ${OPENSSL_LIBRARIES}
-    ${CRYPTO_LIBRARIES}
-    ${LLLOGIN_LIBRARIES}
-    ${LLPHYSICS_LIBRARIES}
-    ${LLPHYSICSEXTENSIONS_LIBRARIES}
-    ${LLAPPEARANCE_LIBRARIES}
-    ${TRACY_LIBRARY}
-    ${MINIZIP_LIBRARIES}
-    ${DISCORD_LIBRARIES}
-    meshoptimizer
-    nlohmann_json::nlohmann_json
-    fmt::fmt
-    )
+        llaudio
+        llcharacter
+        llimage
+        llinventory
+        llmessage
+        llplugin
+        llprimitive
+        llrender
+        llui
+        llfilesystem
+        llwindow
+        llxml
+        llmath
+        llcorehttp
+        llcommon
+        llmeshoptimizer
+        ll::ndof
+        lllogin
+        llprimitive
+        llappearance
+        ${LLPHYSICSEXTENSIONS_LIBRARIES}
+        ll::bugsplat
+        ll::tracy
+        )
+
+if( TARGET ll::nvapi )
+   target_link_libraries(${VIEWER_BINARY_NAME} ll::nvapi )
+endif()
 
 set(ARTWORK_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE PATH
     "Path to artwork files.")
@@ -2344,7 +2226,7 @@ if (DARWIN)
   # https://blog.kitware.com/upcoming-in-cmake-2-8-12-osx-rpath-support/
   set(CMAKE_MACOSX_RPATH 1)
   
-  set(VIEWER_APP_BUNDLE "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${product}.app")
+  set(VIEWER_APP_BUNDLE "${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/${product}.app")
   set(VIEWER_APP_EXE "${VIEWER_APP_BUNDLE}/Contents/MacOS/${product}")
   set(VIEWER_APP_DSYM "${VIEWER_APP_EXE}.dSYM")
   set(VIEWER_APP_XCARCHIVE "${VIEWER_APP_BUNDLE}/../${product}.xcarchive.zip")
@@ -2397,7 +2279,7 @@ if (DARWIN)
       "--openal=${USE_OPENAL}"
       "--kdu=${USE_KDU}"
       --build=${CMAKE_CURRENT_BINARY_DIR}
-      --buildtype=${CMAKE_BUILD_TYPE}
+      --buildtype=$<CONFIG>
       --bundleid=${MACOSX_BUNDLE_GUI_IDENTIFIER}
       "--channel=${VIEWER_CHANNEL}"
       --configuration=${CMAKE_CFG_INTDIR}
@@ -2433,24 +2315,24 @@ if (DARWIN)
         TARGET llpackage POST_BUILD
         COMMAND ${Python3_EXECUTABLE}
         ARGS
-          ${CMAKE_CURRENT_SOURCE_DIR}/viewer_manifest.py
-          --arch=${ARCH}
-          --artwork=${ARTWORK_DIR}
-          "--discord=${USE_DISCORD}"
-          "--sentry=${USE_SENTRY}"
-          "--fmodstudio=${USE_FMODSTUDIO}"
-          "--openal=${USE_OPENAL}"
-          "--kdu=${USE_KDU}"
-          --build=${CMAKE_CURRENT_BINARY_DIR}
-          --buildtype=${CMAKE_BUILD_TYPE}
-          "--channel=${VIEWER_CHANNEL}"
-          --configuration=${CMAKE_CFG_INTDIR}
-          --dest=${VIEWER_APP_BUNDLE}
-          --grid=${GRID}
-          --source=${CMAKE_CURRENT_SOURCE_DIR}
-          --touch=${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/.${product}.touched
-          --versionfile=${CMAKE_CURRENT_BINARY_DIR}/viewer_version.txt
-          ${SIGNING_SETTING}
+              ${CMAKE_CURRENT_SOURCE_DIR}/viewer_manifest.py
+              --arch=${ARCH}
+              --artwork=${ARTWORK_DIR}
+              "--discord=${USE_DISCORD}"
+              "--sentry=${USE_SENTRY}"
+              "--fmodstudio=${USE_FMODSTUDIO}"
+              "--openal=${USE_OPENAL}"
+              "--kdu=${USE_KDU}"
+              --build=${CMAKE_CURRENT_BINARY_DIR}
+              --buildtype=$<CONFIG>
+              "--channel=${VIEWER_CHANNEL}"
+              --configuration=${CMAKE_CFG_INTDIR}
+              --dest=${VIEWER_APP_BUNDLE}
+              --grid=${GRID}
+              --source=${CMAKE_CURRENT_SOURCE_DIR}
+              --touch=${CMAKE_CURRENT_BINARY_DIR}/$<IF:$<BOOL:${LL_GENERATOR_IS_MULTI_CONFIG}>,$<CONFIG>,>/.${product}.bat
+              --versionfile=${CMAKE_CURRENT_BINARY_DIR}/viewer_version.txt
+              ${SIGNING_SETTING}
         DEPENDS
           ${CMAKE_CURRENT_SOURCE_DIR}/viewer_manifest.py
       )
@@ -2570,9 +2452,15 @@ if (LL_TESTS)
   )
 
   set(test_libs
-    ${LLCOMMON_LIBRARIES}
-    ${CURL_LIBRARIES}
-    ${NGHTTP2_LIBRARIES}
+          llcommon
+          llfilesystem
+          llxml
+          llmessage
+          llcharacter
+          llui
+          lllogin
+          llplugin
+          llappearance
     )
 
   set_source_files_properties(
@@ -2581,17 +2469,6 @@ if (LL_TESTS)
     LL_TEST_ADDITIONAL_LIBRARIES "${test_libs}"
   )
 
-  set_source_files_properties(
-    llviewerhelputil.cpp
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
-  )
-
-  set_source_files_properties(
-    llremoteparcelrequest.cpp
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
-  )
 
   set_source_files_properties(
     llworldmap.cpp
@@ -2599,86 +2476,49 @@ if (LL_TESTS)
     PROPERTIES
     LL_TEST_ADDITIONAL_SOURCE_FILES 
     tests/llviewertexture_stub.cpp
-    #llviewertexturelist.cpp
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
   )
 
   set_source_files_properties(
     llmediadataclient.cpp
     PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${LLPRIMITIVE_LIBRARIES}"
-  )
-
-  set_source_files_properties(
-    llagentaccess.cpp
-    PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
+    LL_TEST_ADDITIONAL_LIBRARIES llprimitive
   )
 
   set_source_files_properties(
     lllogininstance.cpp
     PROPERTIES
     LL_TEST_ADDITIONAL_SOURCE_FILES llversioninfo.cpp
-    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
+  )
+  set_property( SOURCE
+          ${viewer_TEST_SOURCE_FILES}
+          PROPERTY
+          LL_TEST_ADDITIONAL_LIBRARIES ${test_libs}
   )
 
-  ##################################################
-  # DISABLING PRECOMPILED HEADERS USAGE FOR TESTS
-  ##################################################
-  # if(USE_PRECOMPILED_HEADERS)
-  #     set_source_files_properties(
-  #       ${viewer_TEST_SOURCE_FILES}
-  #       PROPERTIES
-  #         LL_TEST_ADDITIONAL_SOURCE_FILES llviewerprecompiledheaders.cpp
-  #       )
-  # endif(USE_PRECOMPILED_HEADERS)
   LL_ADD_PROJECT_UNIT_TESTS(${VIEWER_BINARY_NAME} "${viewer_TEST_SOURCE_FILES}")
 
   #set(TEST_DEBUG on)
-  ##################################################
-  # DISABLING PRECOMPILED HEADERS USAGE FOR TESTS
-  ##################################################
-  # if(USE_PRECOMPILED_HEADERS)
-  #     set(test_sources "${test_sources}" llviewerprecompiledheaders.cpp)
-  # endif(USE_PRECOMPILED_HEADERS)
-  set(test_libs
-    ${LLMESSAGE_LIBRARIES}
-    ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    )
-
-  if (LINUX)
-    # llcommon uses `clock_gettime' which is provided by librt on linux.
-    set(LIBRT_LIBRARY
-      rt
-      )
-  endif (LINUX)
 
   set(test_libs
-    ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${OPENSSL_LIBRARIES}
-    ${CRYPTO_LIBRARIES}
-    ${LIBRT_LIBRARY}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-  )
-
-  LL_ADD_INTEGRATION_TEST(llagentaccess 
-    llagentaccess.cpp 
-    "${test_libs}"
-    )
+          llfilesystem
+          llmath
+          llcommon
+          llmessage
+          llcorehttp
+          llxml
+          llui
+          llplugin
+          llappearance
+          lllogin
+          llprimitive
+          lllogin
+          )
 
   LL_ADD_INTEGRATION_TEST(cppfeatures
     ""
     "${test_libs}"
     )
+
   LL_ADD_INTEGRATION_TEST(llsechandler_basic
     llsechandler_basic.cpp
     "${test_libs}"
@@ -2692,10 +2532,10 @@ if (LL_TESTS)
   set(llslurl_test_sources
       llslurl.cpp
       llviewernetwork.cpp
-      )
+  )
 
   LL_ADD_INTEGRATION_TEST(llslurl
-    "${llslurl_test_sources}"
+     "${llslurl_test_sources}"
     "${test_libs}"
     )
 
diff --git a/indra/newview/VIEWER_VERSION.txt b/indra/newview/VIEWER_VERSION.txt
index 5a33ecbd4c1cb7b4d4dc39127c0edf199755f235..531d43bcc622ffbf1b71f26dae388318e70d8a4a 100644
--- a/indra/newview/VIEWER_VERSION.txt
+++ b/indra/newview/VIEWER_VERSION.txt
@@ -1 +1 @@
-6.10
+6.11
diff --git a/indra/newview/app_settings/settings_per_account.xml b/indra/newview/app_settings/settings_per_account.xml
index 1f8788e3a366e5dac791ded3c7125852c4c1dde5..0f6b79036bd1c25bc7fcb9c888106fe2bcf52b4d 100644
--- a/indra/newview/app_settings/settings_per_account.xml
+++ b/indra/newview/app_settings/settings_per_account.xml
@@ -237,6 +237,17 @@
         <key>Value</key>
             <integer>1</integer>
         </map>
+    <key>FetchGroupChatHistory</key>
+      <map>
+        <key>Comment</key>
+        <string>Fetch recent messages from group chat servers when a group window opens</string>
+        <key>Persist</key>
+        <integer>1</integer>
+        <key>Type</key>
+        <string>Boolean</string>
+        <key>Value</key>
+        <integer>1</integer>
+      </map>
     <key>VoiceCallsFriendsOnly</key>
     <map>
         <key>Comment</key>
diff --git a/indra/newview/llagentcamera.cpp b/indra/newview/llagentcamera.cpp
index 015e17cd77d23f670050ccc901cfeb7892081a47..1238d8cd7aa23ee360b1cf3741eb8450c33c07ec 100644
--- a/indra/newview/llagentcamera.cpp
+++ b/indra/newview/llagentcamera.cpp
@@ -138,7 +138,6 @@ LLAgentCamera::LLAgentCamera() :
 	mCameraFOVZoomFactor(0.f),
 	mCameraCurrentFOVZoomFactor(0.f),
 	mCameraFocusOffset(),
-	mCameraFOVDefault(DEFAULT_FIELD_OF_VIEW),
 
 	mCameraCollidePlane(),
 
@@ -160,7 +159,6 @@ LLAgentCamera::LLAgentCamera() :
 	mFocusObject(NULL),
 	mFocusObjectDist(0.f),
 	mFocusObjectOffset(),
-	mFocusDotRadius( 0.1f ),			// meters
 	mTrackFocusObject(TRUE),
 
 	mAtKey(0), // Either 1, 0, or -1... indicates that movement-key is pressed
@@ -2567,6 +2565,11 @@ void LLAgentCamera::changeCameraToCustomizeAvatar()
 	gAgent.standUp(); // force stand up
 	gViewerWindow->getWindow()->resetBusyCount();
 
+    if (LLSelectMgr::getInstance()->getSelection()->isAttachment())
+    {
+        LLSelectMgr::getInstance()->deselectAll();
+    }
+
 	if (gFaceEditToolset)
 	{
 		LLToolMgr::getInstance()->setCurrentToolset(gFaceEditToolset);
diff --git a/indra/newview/llagentcamera.h b/indra/newview/llagentcamera.h
index a50239fdf3371643301b3177c86dcb5d1c6f945e..c9d471a309695a761bdc7fe2866cf38bdc3fe7a0 100644
--- a/indra/newview/llagentcamera.h
+++ b/indra/newview/llagentcamera.h
@@ -178,7 +178,6 @@ class LLAgentCamera
 	F32				mTargetCameraDistance;			// Target camera offset from avatar
 	F32				mCameraFOVZoomFactor;			// Amount of fov zoom applied to camera when zeroing in on an object
 	F32				mCameraCurrentFOVZoomFactor;	// Interpolated fov zoom
-	F32				mCameraFOVDefault;				// Default field of view that is basis for FOV zoom effect
 	LLVector4		mCameraCollidePlane;			// Colliding plane for camera
 	F32				mCameraZoomFraction;			// Mousewheel driven fraction of zoom
 	LLVector3		mCameraPositionAgent;			// Camera position in agent coordinates
@@ -193,7 +192,6 @@ class LLAgentCamera
 	// Follow
 	//--------------------------------------------------------------------
 public:
-	void			setUsingFollowCam(bool using_follow_cam);
 	bool 			isfollowCamLocked();
 private:
 	LLFollowCam 	mFollowCam; 			// Ventrella
@@ -259,7 +257,6 @@ class LLAgentCamera
 	LLPointer<LLViewerObject> mFocusObject;
 	F32				mFocusObjectDist;
 	LLVector3		mFocusObjectOffset;
-	F32				mFocusDotRadius; 				// Meters
 	BOOL			mTrackFocusObject;
 	
 	//--------------------------------------------------------------------
diff --git a/indra/newview/llappearancemgr.h b/indra/newview/llappearancemgr.h
index 6e8dbe72bdf4bec6c349b053a9e9feccaebc6d45..8721a695ccb56c238bdc2db6b5eac3103587e8bd 100644
--- a/indra/newview/llappearancemgr.h
+++ b/indra/newview/llappearancemgr.h
@@ -35,6 +35,7 @@
 #include "llinventoryobserver.h"
 #include "llviewerinventory.h"
 #include "llcorehttputil.h"
+#include <memory>
 
 class LLWearableHoldingPattern;
 class LLInventoryCallback;
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index b4dd470f4811c5b6b97b3d3986c9595732f248da..f6e850163b4874ea400007b3e2842125a2116043 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1162,7 +1162,7 @@ bool LLAppViewer::init()
     {
         LL_WARNS("InitInfo") << "Skipping updater check." << LL_ENDL;
     }
-
+#endif //LL_RELEASE_FOR_DOWNLOAD
     {
         // Iterate over --leap command-line options. But this is a bit tricky: if
         // there's only one, it won't be an array at all.
@@ -1188,7 +1188,6 @@ bool LLAppViewer::init()
             LLLeap::create("", leap.asString(), false); // exception=false
         }
     }
-#endif //LL_RELEASE_FOR_DOWNLOAD
 
 	LLTextUtil::TextHelpers::iconCallbackCreationFunction = create_text_segment_icon_from_url_match;
 
@@ -5497,7 +5496,8 @@ void LLAppViewer::disconnectViewer()
     {
         gInventory.cache(gInventory.getRootFolderID(), gAgent.getID());
         if (gInventory.getLibraryRootFolderID().notNull()
-            && gInventory.getLibraryOwnerID().notNull())
+            && gInventory.getLibraryOwnerID().notNull()
+            && !mSecondInstance) // agent is unique, library isn't
         {
             gInventory.cache(
                 gInventory.getLibraryRootFolderID(),
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index 7fa2c44416fd2aedfb44687e2e3fe1280f6f99b8..906b1139a6b3522a0efd1b45ee53b263fa16e79b 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -78,7 +78,9 @@ static S32 cube_channel = -1;
 static S32 diffuse_channel = -1;
 static S32 bump_channel = -1;
 
-#define LL_BUMPLIST_MULTITHREADED 1 // TODO -- figure out why this doesn't work
+// Enabled after changing LLViewerTexture::mNeedsCreateTexture to an
+// LLAtomicBool; this should work just fine, now. HB
+#define LL_BUMPLIST_MULTITHREADED 1
 
 
 // static 
diff --git a/indra/newview/llestateinfomodel.cpp b/indra/newview/llestateinfomodel.cpp
index 937bbec58c94b9c608e3ccebf5489cfe2bf788e1..dba2f34d33ea51054ba7077256b59f64b3b728dc 100644
--- a/indra/newview/llestateinfomodel.cpp
+++ b/indra/newview/llestateinfomodel.cpp
@@ -74,6 +74,7 @@ bool LLEstateInfoModel::getDenyAgeUnverified()		const {	return getFlag(REGION_FL
 bool LLEstateInfoModel::getAllowVoiceChat()			const { return getFlag(REGION_FLAGS_ALLOW_VOICE); }
 bool LLEstateInfoModel::getAllowAccessOverride()	const { return getFlag(REGION_FLAGS_ALLOW_ACCESS_OVERRIDE); }
 bool LLEstateInfoModel::getAllowEnvironmentOverride() const { return getFlag(REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE); }
+bool LLEstateInfoModel::getDenyScriptedAgents()     const { return getFlag(REGION_FLAGS_DENY_BOTS); }
 
 void LLEstateInfoModel::setUseFixedSun(bool val)			{ setFlag(REGION_FLAGS_SUN_FIXED, 				val);	}
 void LLEstateInfoModel::setIsExternallyVisible(bool val)	{ setFlag(REGION_FLAGS_EXTERNALLY_VISIBLE,		val);	}
@@ -83,6 +84,7 @@ void LLEstateInfoModel::setDenyAgeUnverified(bool val)		{ setFlag(REGION_FLAGS_D
 void LLEstateInfoModel::setAllowVoiceChat(bool val)		    { setFlag(REGION_FLAGS_ALLOW_VOICE,				val);	}
 void LLEstateInfoModel::setAllowAccessOverride(bool val)    { setFlag(REGION_FLAGS_ALLOW_ACCESS_OVERRIDE,   val);   }
 void LLEstateInfoModel::setAllowEnvironmentOverride(bool val) { setFlag(REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE, val); }
+void LLEstateInfoModel::setDenyScriptedAgents(bool val)     { setFlag(REGION_FLAGS_DENY_BOTS, val); }
 
 void LLEstateInfoModel::update(const strings_t& strings)
 {
@@ -148,6 +150,7 @@ void LLEstateInfoModel::commitEstateInfoCapsCoro(std::string url)
     body["allow_direct_teleport"] = getAllowDirectTeleport();
     body["deny_anonymous"] = getDenyAnonymous();
     body["deny_age_unverified"] = getDenyAgeUnverified();
+    body["block_bots"] = getDenyScriptedAgents();
     body["allow_voice_chat"] = getAllowVoiceChat();
     body["override_public_access"] = getAllowAccessOverride();
 
@@ -223,6 +226,7 @@ std::string LLEstateInfoModel::getInfoDump()
 	dump["allow_direct_teleport"] = getAllowDirectTeleport();
 	dump["deny_anonymous"       ] = getDenyAnonymous();
 	dump["deny_age_unverified"  ] = getDenyAgeUnverified();
+    dump["block_bots"           ] = getDenyScriptedAgents();
 	dump["allow_voice_chat"     ] = getAllowVoiceChat();
     dump["override_public_access"] = getAllowAccessOverride();
     dump["override_environment"] = getAllowEnvironmentOverride();
diff --git a/indra/newview/llestateinfomodel.h b/indra/newview/llestateinfomodel.h
index 8e644ea15d785d65af31156acaaeda893a290633..107a4042835311f01907d399071fb37781b96a3f 100644
--- a/indra/newview/llestateinfomodel.h
+++ b/indra/newview/llestateinfomodel.h
@@ -57,6 +57,7 @@ class LLEstateInfoModel final : public LLSingleton<LLEstateInfoModel>
 	bool				getAllowVoiceChat()			const;
     bool                getAllowAccessOverride()    const;
     bool                getAllowEnvironmentOverride() const;
+    bool                getDenyScriptedAgents()     const;
 
 	const std::string&	getName()					const { return mName; }
 	const LLUUID&		getOwnerID()				const { return mOwnerID; }
@@ -72,6 +73,7 @@ class LLEstateInfoModel final : public LLSingleton<LLEstateInfoModel>
 	void setAllowVoiceChat(bool val);
     void setAllowAccessOverride(bool val);
     void setAllowEnvironmentOverride(bool val);
+    void setDenyScriptedAgents(bool val);
 
 	void setSunHour(F32 sun_hour) { mSunHour = sun_hour; }
 
diff --git a/indra/newview/llfavoritesbar.cpp b/indra/newview/llfavoritesbar.cpp
index 815db449cf9fa31ae0ece17611ebdcc543bd89a6..adc2f7b4e78646ac367b4674797b6b90196344f3 100644
--- a/indra/newview/llfavoritesbar.cpp
+++ b/indra/newview/llfavoritesbar.cpp
@@ -878,7 +878,11 @@ void LLFavoritesBarCtrl::updateButtons(bool force_update)
 		if (getChildList()->size() > 0)
 		{
 			//find last visible child to get the rightest button offset
-			child_list_const_reverse_iter_t last_visible_it = std::find_if(childs->rbegin(), childs->rend(), [](const LLView* viewp) { return viewp->getVisible(); });
+			child_list_const_reverse_iter_t last_visible_it =
+				std::find_if(
+					childs->rbegin(), childs->rend(), 
+					[](const child_list_t::value_type& child)
+					{ return child->getVisible(); });
 			if(last_visible_it != childs->rend())
 			{
 				last_right_edge = (*last_visible_it)->getRect().mRight;
diff --git a/indra/newview/llfilepicker.cpp b/indra/newview/llfilepicker.cpp
index 41108e51c78d4b58446ac35af35ed9a1e1cf0b19..9ef8c67f44b6ff3afcac85e948b4cc4552b2c36f 100644
--- a/indra/newview/llfilepicker.cpp
+++ b/indra/newview/llfilepicker.cpp
@@ -1438,7 +1438,7 @@ BOOL LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
 // Hacky stubs designed to facilitate fake getSaveFile and getOpenFile with
 // static results, when we don't have a real filepicker.
 
-BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename )
+BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
 {
 	// if local file browsing is turned off, return without opening dialog
 	// (Even though this is a stub, I think we still should not return anything at all)
diff --git a/indra/newview/llfloater360capture.cpp b/indra/newview/llfloater360capture.cpp
index a4f0ae95a8a8cc60d48d6dbbb799995f4eeb9466..1359030362b581e98463c9069a3ae17c41721ebb 100644
--- a/indra/newview/llfloater360capture.cpp
+++ b/indra/newview/llfloater360capture.cpp
@@ -898,8 +898,10 @@ const std::string LLFloater360Capture::generate_proposed_filename()
         // this looks complex but it's straightforward - removes all non-alpha chars from a string
         // which in this case is the SL region name - we use it as a proposed filename but the user is free to change
         std::string region_name = region->getName();
-        std::replace_if(region_name.begin(), region_name.end(), [](int c) { return !std::isalnum(c); }, '_');
-        if (region_name.length() > 0)
+        std::replace_if(region_name.begin(), region_name.end(),
+                        [](char c){ return ! std::isalnum(c); },
+                        '_');
+        if (! region_name.empty())
         {
             filename << region_name;
             filename << "_";
diff --git a/indra/newview/llfloateravatarpicker.cpp b/indra/newview/llfloateravatarpicker.cpp
index 136a4b197b3f0f30f4d05deb6b26d6aa9e9154be..c53fe6cb4535aa280ed5bf7830cb0ccea2eda3ee 100644
--- a/indra/newview/llfloateravatarpicker.cpp
+++ b/indra/newview/llfloateravatarpicker.cpp
@@ -457,13 +457,18 @@ void LLFloaterAvatarPicker::findCoro(std::string url, LLUUID queryID, std::strin
 
     if (status || (status == LLCore::HttpStatus(HTTP_BAD_REQUEST)))
     {
-        LLFloaterAvatarPicker* floater =
-            LLFloaterReg::findTypedInstance<LLFloaterAvatarPicker>("avatar_picker", name);
-        if (floater)
-        {
-            result.erase(LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS);
-            floater->processResponse(queryID, result);
-        }
+        result.erase(LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS);
+    }
+    else
+    {
+        result["failure_reason"] = status.toString();
+    }
+
+    LLFloaterAvatarPicker* floater =
+        LLFloaterReg::findTypedInstance<LLFloaterAvatarPicker>("avatar_picker", name);
+    if (floater)
+    {
+        floater->processResponse(queryID, result);
     }
 }
 
@@ -741,59 +746,67 @@ void LLFloaterAvatarPicker::processResponse(const LLUUID& query_id, const LLSD&
 	{
 		LLScrollListCtrl* search_results = getChild<LLScrollListCtrl>("SearchResults");
 
-		LLSD agents = content["agents"];
-
-		// clear "Searching" label on first results
-		search_results->deleteAllItems();
-
-		LLSD item;
-		LLSD::array_const_iterator it = agents.beginArray();
-		for ( ; it != agents.endArray(); ++it)
-		{
-			const LLSD& row = *it;
-			if (row["id"].asUUID() != gAgent.getID() || !mExcludeAgentFromSearchResults)
-			{
-				item["id"] = row["id"];
-				LLSD& columns = item["columns"];
-				columns[0]["column"] = "name";
-				columns[0]["value"] = row["display_name"];
-				columns[1]["column"] = "username";
-				columns[1]["value"] = row["username"];
-				search_results->addElement(item);
-
-				// add the avatar name to our list
-				LLAvatarName avatar_name;
-				avatar_name.fromLLSD(row);
-				sAvatarNameMap[row["id"].asUUID()] = avatar_name;
-			}
-		}
+        // clear "Searching" label on first results
+        search_results->deleteAllItems();
 
-		if (search_results->isEmpty())
-		{
-			std::string name = "'" + getChild<LLUICtrl>("Edit")->getValue().asString() + "'";
-			LLSD item;
-			item["id"] = LLUUID::null;
-			item["columns"][0]["column"] = "name";
-			item["columns"][0]["value"] = name;
-			item["columns"][1]["column"] = "username";
-			item["columns"][1]["value"] = getString("not_found_text");
-			search_results->addElement(item);
-			search_results->setEnabled(false);
-			getChildView("ok_btn")->setEnabled(false);
-		}
-		else
-		{
-			getChildView("ok_btn")->setEnabled(true);
-			search_results->setEnabled(true);
-			search_results->sortByColumnIndex(1, TRUE);
-			std::string text = getChild<LLUICtrl>("Edit")->getValue().asString();
-			if (!search_results->selectItemByLabel(text, TRUE, 1))
-			{
-				search_results->selectFirstItem();
-			}			
-			onList();
-			search_results->setFocus(TRUE);
-		}
+        if (content.has("failure_reason"))
+        {
+            getChild<LLScrollListCtrl>("SearchResults")->setCommentText(content["failure_reason"].asString());
+            getChildView("ok_btn")->setEnabled(false);
+        }
+        else
+        {
+            LLSD agents = content["agents"];
+
+            LLSD item;
+            LLSD::array_const_iterator it = agents.beginArray();
+            for (; it != agents.endArray(); ++it)
+            {
+                const LLSD& row = *it;
+                if (row["id"].asUUID() != gAgent.getID() || !mExcludeAgentFromSearchResults)
+                {
+                    item["id"] = row["id"];
+                    LLSD& columns = item["columns"];
+                    columns[0]["column"] = "name";
+                    columns[0]["value"] = row["display_name"];
+                    columns[1]["column"] = "username";
+                    columns[1]["value"] = row["username"];
+                    search_results->addElement(item);
+
+                    // add the avatar name to our list
+                    LLAvatarName avatar_name;
+                    avatar_name.fromLLSD(row);
+                    sAvatarNameMap[row["id"].asUUID()] = avatar_name;
+                }
+            }
+
+            if (search_results->isEmpty())
+            {
+                std::string name = "'" + getChild<LLUICtrl>("Edit")->getValue().asString() + "'";
+                LLSD item;
+                item["id"] = LLUUID::null;
+                item["columns"][0]["column"] = "name";
+                item["columns"][0]["value"] = name;
+                item["columns"][1]["column"] = "username";
+                item["columns"][1]["value"] = getString("not_found_text");
+                search_results->addElement(item);
+                search_results->setEnabled(false);
+                getChildView("ok_btn")->setEnabled(false);
+            }
+            else
+            {
+                getChildView("ok_btn")->setEnabled(true);
+                search_results->setEnabled(true);
+                search_results->sortByColumnIndex(1, TRUE);
+                std::string text = getChild<LLUICtrl>("Edit")->getValue().asString();
+                if (!search_results->selectItemByLabel(text, TRUE, 1))
+                {
+                    search_results->selectFirstItem();
+                }
+                onList();
+                search_results->setFocus(TRUE);
+            }
+        }
 	}
 }
 
diff --git a/indra/newview/llfloateravatarrendersettings.cpp b/indra/newview/llfloateravatarrendersettings.cpp
index f09d034d0498490079ef7acb59b98d1bb8359cd6..34a574d0af18e34fdf2e9d10b9299803fdf14810 100644
--- a/indra/newview/llfloateravatarrendersettings.cpp
+++ b/indra/newview/llfloateravatarrendersettings.cpp
@@ -89,6 +89,7 @@ BOOL LLFloaterAvatarRenderSettings::postBuild()
     LLFloater::postBuild();
     mAvatarSettingsList = getChild<LLNameListCtrl>("render_settings_list");
     mAvatarSettingsList->setRightMouseDownCallback(boost::bind(&LLFloaterAvatarRenderSettings::onAvatarListRightClick, this, _1, _2, _3));
+    mAvatarSettingsList->setAlternateSort();
     getChild<LLFilterEditor>("people_filter_input")->setCommitCallback(boost::bind(&LLFloaterAvatarRenderSettings::onFilterEdit, this, _2));
 
 	return TRUE;
@@ -138,8 +139,8 @@ void LLFloaterAvatarRenderSettings::updateList()
             item_params.columns.add().value(av_name.getCompleteName()).column("name");
             std::string setting = getString(iter->second == 1 ? "av_never_render" : "av_always_render");
             item_params.columns.add().value(setting).column("setting");
-            std::string timestamp = createTimestamp(LLRenderMuteList::getInstance()->getVisualMuteDate(iter->first));
-            item_params.columns.add().value(timestamp).column("timestamp");
+            S32 mute_date = LLRenderMuteList::getInstance()->getVisualMuteDate(iter->first);
+            item_params.columns.add().value(createTimestamp(mute_date)).column("timestamp").alt_value(std::to_string(mute_date));
             mAvatarSettingsList->addNameItemRow(item_params);
         }
     }
diff --git a/indra/newview/llfloaterdisplayname.cpp b/indra/newview/llfloaterdisplayname.cpp
index bddaba18d64fce00f355826b8feb1cb65e560cca..226ec673536690d911d353e2328c0072f92cf2a8 100644
--- a/indra/newview/llfloaterdisplayname.cpp
+++ b/indra/newview/llfloaterdisplayname.cpp
@@ -47,6 +47,7 @@ class LLFloaterDisplayName final : public LLFloater
 	virtual ~LLFloaterDisplayName() { }
 	/*virtual*/	BOOL	postBuild();
 	void onSave();
+	void onReset();
 	void onCancel();
 	/*virtual*/ void onOpen(const LLSD& key);
 	
@@ -101,6 +102,7 @@ void LLFloaterDisplayName::onOpen(const LLSD& key)
 
 BOOL LLFloaterDisplayName::postBuild()
 {
+	getChild<LLUICtrl>("reset_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onReset, this));	
 	getChild<LLUICtrl>("cancel_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onCancel, this));	
 	getChild<LLUICtrl>("save_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onSave, this));	
 	
@@ -156,6 +158,20 @@ void LLFloaterDisplayName::onCancel()
 	setVisible(false);
 }
 
+void LLFloaterDisplayName::onReset()
+{
+    LLAvatarName av_name;
+    if (!LLAvatarNameCache::get(gAgent.getID(), &av_name))
+    {
+        return;
+    }
+    getChild<LLUICtrl>("display_name_editor")->setValue(av_name.getCompleteName());
+
+    getChild<LLUICtrl>("display_name_confirm")->clear();
+    getChild<LLUICtrl>("display_name_confirm")->setFocus(TRUE);
+}
+
+
 void LLFloaterDisplayName::onSave()
 {
 	std::string display_name_utf8 = getChild<LLUICtrl>("display_name_editor")->getValue().asString();
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index 4222cf039904da7a0b56631522fa1e243711c9d6..cbdab11ca72daa930569f74d168d9fd9349a782c 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -656,11 +656,11 @@ void LLFloaterRegionInfo::refreshFromRegion(LLViewerRegion* region)
 	}
 
 	// call refresh from region on all panels
-	std::for_each(
-		mInfoPanels.begin(),
-		mInfoPanels.end(),
-		[region](LLPanelRegionInfo* panelp) { panelp->refreshFromRegion(region); });
-    mEnvironmentPanel->refreshFromRegion(region);
+	for (const auto& infoPanel : mInfoPanels)
+	{
+		infoPanel->refreshFromRegion(region);
+	}
+	mEnvironmentPanel->refreshFromRegion(region);
 }
 
 // public
@@ -1882,6 +1882,7 @@ BOOL LLPanelEstateInfo::postBuild()
 	initCtrl("allow_direct_teleport");
 	initCtrl("limit_payment");
 	initCtrl("limit_age_verified");
+    initCtrl("limit_bots");
 	initCtrl("voice_chat_check");
     initCtrl("parcel_access_override");
 
@@ -1905,12 +1906,14 @@ void LLPanelEstateInfo::refresh()
 	getChildView("Only Allow")->setEnabled(public_access);
 	getChildView("limit_payment")->setEnabled(public_access);
 	getChildView("limit_age_verified")->setEnabled(public_access);
+    getChildView("limit_bots")->setEnabled(public_access);
 
 	// if this is set to false, then the limit fields are meaningless and should be turned off
 	if (public_access == false)
 	{
 		getChild<LLUICtrl>("limit_payment")->setValue(false);
 		getChild<LLUICtrl>("limit_age_verified")->setValue(false);
+        getChild<LLUICtrl>("limit_bots")->setValue(false);
 	}
 }
 
@@ -1927,6 +1930,7 @@ void LLPanelEstateInfo::refreshFromEstate()
 	getChild<LLUICtrl>("limit_payment")->setValue(estate_info.getDenyAnonymous());
 	getChild<LLUICtrl>("limit_age_verified")->setValue(estate_info.getDenyAgeUnverified());
     getChild<LLUICtrl>("parcel_access_override")->setValue(estate_info.getAllowAccessOverride());
+    getChild<LLUICtrl>("limit_bots")->setValue(estate_info.getDenyScriptedAgents());
 
 	// Ensure appriopriate state of the management UI
 	updateControls(gAgent.getRegion());
@@ -1970,6 +1974,7 @@ bool LLPanelEstateInfo::callbackChangeLindenEstate(const LLSD& notification, con
 			estate_info.setDenyAgeUnverified(getChild<LLUICtrl>("limit_age_verified")->getValue().asBoolean());
 			estate_info.setAllowVoiceChat(getChild<LLUICtrl>("voice_chat_check")->getValue().asBoolean());
             estate_info.setAllowAccessOverride(getChild<LLUICtrl>("parcel_access_override")->getValue().asBoolean());
+            estate_info.setDenyScriptedAgents(getChild<LLUICtrl>("limit_bots")->getValue().asBoolean());
             // JIGGLYPUFF
             //estate_info.setAllowAccessOverride(getChild<LLUICtrl>("")->getValue().asBoolean());
 			// send the update to sim
diff --git a/indra/newview/llgesturemgr.cpp b/indra/newview/llgesturemgr.cpp
index 40cf34acc7f4307ff1807f0d5b4d637ce7be9af5..9683a3b9ae361dae241c12e9047e66ae8fece7d3 100644
--- a/indra/newview/llgesturemgr.cpp
+++ b/indra/newview/llgesturemgr.cpp
@@ -771,7 +771,7 @@ struct IsGesturePlaying
 {
 	bool operator()(const LLMultiGesture* gesture) const
 	{
-		return gesture->mPlaying ? true : false;
+		return bool(gesture->mPlaying);
 	}
 };
 
diff --git a/indra/newview/llhudnametag.cpp b/indra/newview/llhudnametag.cpp
index dd20b7caa9c768d5f968efcca013a78cb3d37167..fed04aa5ffc31bfdc482e54a2f055b8e54a88bed 100644
--- a/indra/newview/llhudnametag.cpp
+++ b/indra/newview/llhudnametag.cpp
@@ -56,7 +56,6 @@ const F32 HORIZONTAL_PADDING = 16.f;
 const F32 VERTICAL_PADDING = 12.f;
 const F32 LINE_PADDING = 3.f;			// aka "leading"
 const F32 BUFFER_SIZE = 2.f;
-const F32 HUD_TEXT_MAX_WIDTH = 190.f;
 const S32 NUM_OVERLAP_ITERATIONS = 10;
 const F32 POSITION_DAMPING_TC = 0.2f;
 const F32 MAX_STABLE_CAMERA_VELOCITY = 0.1f;
@@ -67,6 +66,8 @@ const F32 LOD_2_SCREEN_COVERAGE = 0.40f;
 std::set<LLPointer<LLHUDNameTag> > LLHUDNameTag::sTextObjects;
 std::vector<LLPointer<LLHUDNameTag> > LLHUDNameTag::sVisibleTextObjects;
 BOOL LLHUDNameTag::sDisplayText = TRUE ;
+const F32 LLHUDNameTag::NAMETAG_MAX_WIDTH = 298.f;
+const F32 LLHUDNameTag::HUD_TEXT_MAX_WIDTH = 190.f;
 
 bool llhudnametag_further_away::operator()(const LLPointer<LLHUDNameTag>& lhs, const LLPointer<LLHUDNameTag>& rhs) const
 {
@@ -418,7 +419,8 @@ void LLHUDNameTag::addLine(const std::string &text_utf8,
 						const LLColor4& color,
 						const LLFontGL::StyleFlags style,
 						const LLFontGL* font,
-						const bool use_ellipses)
+						const bool use_ellipses,
+						F32 max_pixels)
 {
 	LLWString wline = utf8str_to_wstring(text_utf8);
 	if (!wline.empty())
@@ -435,7 +437,7 @@ void LLHUDNameTag::addLine(const std::string &text_utf8,
 		tokenizer tokens(wline, sep);
 		tokenizer::iterator iter = tokens.begin();
 
-        const F32 max_pixels = HUD_TEXT_MAX_WIDTH;
+        max_pixels = llmin(max_pixels, NAMETAG_MAX_WIDTH);
         while (iter != tokens.end())
         {
             U32 line_length = 0;
@@ -492,7 +494,7 @@ void LLHUDNameTag::setLabel(const std::string &label_utf8)
 	addLabel(label_utf8);
 }
 
-void LLHUDNameTag::addLabel(const std::string& label_utf8)
+void LLHUDNameTag::addLabel(const std::string& label_utf8, F32 max_pixels)
 {
 	LLWString wstr = utf8string_to_wstring(label_utf8);
 	if (!wstr.empty())
@@ -506,13 +508,15 @@ void LLHUDNameTag::addLabel(const std::string& label_utf8)
 		tokenizer tokens(wstr, sep);
 		tokenizer::iterator iter = tokens.begin();
 
+        max_pixels = llmin(max_pixels, NAMETAG_MAX_WIDTH);
+
 		while (iter != tokens.end())
 		{
 			U32 line_length = 0;
 			do	
 			{
 				S32 segment_length = mFontp->maxDrawableChars(iter->substr(line_length).c_str(), 
-					HUD_TEXT_MAX_WIDTH, wstr.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+                    max_pixels, wstr.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
 				LLHUDTextSegment segment(iter->substr(line_length, segment_length), LLFontGL::NORMAL, mColor, mFontp);
 				mLabelSegments.push_back(segment);
 				line_length += segment_length;
@@ -703,7 +707,7 @@ void LLHUDNameTag::updateSize()
 		const LLFontGL* fontp = iter->mFont;
 		height += fontp->getLineHeight();
 		height += LINE_PADDING;
-		width = llmax(width, llmin(iter->getWidth(fontp), HUD_TEXT_MAX_WIDTH));
+		width = llmax(width, llmin(iter->getWidth(fontp), NAMETAG_MAX_WIDTH));
 		++iter;
 	}
 
@@ -717,7 +721,7 @@ void LLHUDNameTag::updateSize()
 	while (iter != mLabelSegments.end())
 	{
 		height += mFontp->getLineHeight();
-		width = llmax(width, llmin(iter->getWidth(mFontp), HUD_TEXT_MAX_WIDTH));
+		width = llmax(width, llmin(iter->getWidth(mFontp), NAMETAG_MAX_WIDTH));
 		++iter;
 	}
 	
diff --git a/indra/newview/llhudnametag.h b/indra/newview/llhudnametag.h
index 4e5dd26d38ee9da1a04b94e3b5f4ae2d9a8dd721..f825099fa192d690b13333495bdd9da3be7d0f35 100644
--- a/indra/newview/llhudnametag.h
+++ b/indra/newview/llhudnametag.h
@@ -85,6 +85,9 @@ class LLHUDNameTag final : public LLHUDObject
 		ALIGN_VERT_CENTER
 	} EVertAlignment;
 
+    static const F32 NAMETAG_MAX_WIDTH; // 298px, made to fit 31 M's
+    static const F32 HUD_TEXT_MAX_WIDTH; // 190px
+
 public:
 	// Set entire string, eliminating existing lines
 	void setString(const std::string& text_utf8);
@@ -92,11 +95,17 @@ class LLHUDNameTag final : public LLHUDObject
 	void clearString();
 
 	// Add text a line at a time, allowing custom formatting
-	void addLine(const std::string &text_utf8, const LLColor4& color, const LLFontGL::StyleFlags style = LLFontGL::NORMAL, const LLFontGL* font = NULL, const bool use_ellipses = false);
+	void addLine(
+        const std::string &text_utf8,
+        const LLColor4& color,
+        const LLFontGL::StyleFlags style = LLFontGL::NORMAL,
+        const LLFontGL* font = NULL,
+        const bool use_ellipses = false,
+        F32 max_pixels = HUD_TEXT_MAX_WIDTH);
 
 	// For bubble chat, set the part above the chat text
 	void setLabel(const std::string& label_utf8);
-	void addLabel(const std::string& label_utf8);
+	void addLabel(const std::string& label_utf8, F32 max_pixels = HUD_TEXT_MAX_WIDTH);
 
 	// Sets the default font for lines with no font specified
 	void setFont(const LLFontGL* font);
diff --git a/indra/newview/llimprocessing.cpp b/indra/newview/llimprocessing.cpp
index e112293165180c14432cddf4800200f761a13816..80cc6e0814c931b29d358c181196ffff94f7742b 100644
--- a/indra/newview/llimprocessing.cpp
+++ b/indra/newview/llimprocessing.cpp
@@ -606,7 +606,9 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                     dialog,
                     parent_estate_id,
                     region_id,
-                    position);
+                    position,
+                    false,      // is_region_msg
+                    timestamp);
 
                 if (!gIMMgr->isDNDMessageSend(session_id))
                 {
@@ -688,7 +690,8 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                         parent_estate_id,
                         region_id,
                         position,
-                        region_message);
+                        region_message,
+                        timestamp);
                 }
                 else
                 {
@@ -1273,7 +1276,9 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                     IM_SESSION_INVITE,
                     parent_estate_id,
                     region_id,
-                    position);
+                    position,
+                    false,      // is_region_msg
+                    timestamp);
             }
             else
             {
@@ -1293,12 +1298,14 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                     from_id,
                     name,
                     buffer,
-                    IM_OFFLINE == offline,
-                    ll_safe_string((char*)binary_bucket),
+                    (IM_OFFLINE == offline),
+                    ll_safe_string((char*)binary_bucket),   // session name
                     IM_SESSION_INVITE,
                     parent_estate_id,
                     region_id,
-                    position);
+                    position,
+                    false,      // is_region_msg
+                    timestamp);
             }
             break;
 
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index f002098653d435241dd3d6470bf329072675100f..4bf0afab15157d48b0841ce9c7bcc484687f0069 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file LLIMMgr.cpp
  * @brief Container for Instant Messaging
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -41,6 +41,7 @@
 #include "llstring.h"
 #include "lltextutil.h"
 #include "lltrans.h"
+#include "lltranslate.h"
 #include "lluictrlfactory.h"
 #include "llfloaterimsessiontab.h"
 #include "llagent.h"
@@ -82,11 +83,17 @@ const static std::string ADHOC_NAME_SUFFIX(" Conference");
 const static std::string NEARBY_P2P_BY_OTHER("nearby_P2P_by_other");
 const static std::string NEARBY_P2P_BY_AGENT("nearby_P2P_by_agent");
 
+// Markers inserted around translated part of chat text
+const static std::string XL8_START_TAG(" (");
+const static std::string XL8_END_TAG(")");
+const S32 XL8_PADDING = 3;  // XL8_START_TAG.size() + XL8_END_TAG.size()
+
 /** Timeout of outgoing session initialization (in seconds) */
 const static U32 SESSION_INITIALIZATION_TIMEOUT = 30;
 
 void startConfrenceCoro(std::string url, LLUUID tempSessionId, LLUUID creatorId, LLUUID otherParticipantId, LLSD agents);
 void chatterBoxInvitationCoro(std::string url, LLUUID sessionId, LLIMMgr::EInvitationType invitationType);
+void chatterBoxHistoryCoro(std::string url, LLUUID sessionId, std::string from, std::string message, U32 timestamp);
 void start_deprecated_conference_chat(const LLUUID& temp_session_id, const LLUUID& creator_id, const LLUUID& other_participant_id, const LLSD& agents_to_invite);
 
 const LLUUID LLOutgoingCallDialog::OCD_KEY = LLUUID("7CF78E11-0CFE-498D-ADB9-1417BF03DDB4");
@@ -117,7 +124,7 @@ void process_dnd_im(const LLSD& notification)
     LLUUID sessionID = data["SESSION_ID"].asUUID();
     LLUUID fromID = data["FROM_ID"].asUUID();
 
-    //re-create the IM session if needed 
+    //re-create the IM session if needed
     //(when coming out of DND mode upon app restart)
     if(!gIMMgr->hasSession(sessionID))
     {
@@ -128,13 +135,13 @@ void process_dnd_im(const LLSD& notification)
         {
             name = av_name.getDisplayName();
         }
-		
-        
-        LLIMModel::getInstance()->newSession(sessionID, 
-            name, 
-            IM_NOTHING_SPECIAL, 
-            fromID, 
-            false, 
+
+
+        LLIMModel::getInstance()->newSession(sessionID,
+            name,
+            IM_NOTHING_SPECIAL,
+            fromID,
+            false,
             false); //will need slight refactor to retrieve whether offline message or not (assume online for now)
     }
 
@@ -319,8 +326,8 @@ void notify_of_message(const LLSD& msg, bool is_dnd_msg)
 			}
 			else
 			{
-				if (is_dnd_msg && (ON_TOP == conversations_floater_status || 
-									NOT_ON_TOP == conversations_floater_status || 
+				if (is_dnd_msg && (ON_TOP == conversations_floater_status ||
+									NOT_ON_TOP == conversations_floater_status ||
 									CLOSED == conversations_floater_status))
 				{
 					im_box->highlightConversationItemWidget(session_id, true);
@@ -379,7 +386,7 @@ void notify_of_message(const LLSD& msg, bool is_dnd_msg)
 	}
 	if (store_dnd_message)
 	{
-		// If in DND mode, allow notification to be stored so upon DND exit 
+		// If in DND mode, allow notification to be stored so upon DND exit
 		// the user will be notified with some limitations (see 'is_dnd_msg' flag checks)
 		if(session_id.notNull()
 			&& participant_id.notNull()
@@ -400,7 +407,7 @@ void startConfrenceCoro(std::string url,
 {
     LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
     LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
-        httpAdapter(std::make_shared<LLCoreHttpUtil::HttpCoroutineAdapter>("TwitterConnect", httpPolicy));
+        httpAdapter(std::make_shared<LLCoreHttpUtil::HttpCoroutineAdapter>("ConferenceChatStart", httpPolicy));
     LLCore::HttpRequest::ptr_t httpRequest(std::make_shared<LLCore::HttpRequest>());
 
     LLSD postData;
@@ -440,7 +447,7 @@ void chatterBoxInvitationCoro(std::string url, LLUUID sessionId, LLIMMgr::EInvit
 {
     LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
     LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
-        httpAdapter(std::make_shared<LLCoreHttpUtil::HttpCoroutineAdapter>("TwitterConnect", httpPolicy));
+        httpAdapter(std::make_shared<LLCoreHttpUtil::HttpCoroutineAdapter>("ConferenceInviteStart", httpPolicy));
     LLCore::HttpRequest::ptr_t httpRequest(std::make_shared<LLCore::HttpRequest>());
 
     LLSD postData;
@@ -518,8 +525,124 @@ void chatterBoxInvitationCoro(std::string url, LLUUID sessionId, LLIMMgr::EInvit
 
 }
 
+void translateSuccess(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, const std::string& utf8_text,
+                        U64 time_n_flags, std::string originalMsg, std::string expectLang, std::string translation, const std::string detected_language)
+{
+    std::string message_txt(utf8_text);
+    // filter out non-interesting responses
+    if (!translation.empty()
+        && ((detected_language.empty()) || (expectLang != detected_language))
+        && (LLStringUtil::compareInsensitive(translation, originalMsg) != 0))
+    {   // Note - if this format changes, also fix code in addMessagesFromServerHistory()
+        message_txt += XL8_START_TAG + LLTranslate::removeNoTranslateTags(translation) + XL8_END_TAG;
+    }
+
+    // Extract info packed in time_n_flags
+    bool log2file =      (bool)(time_n_flags & (1LL << 32));
+    bool is_region_msg = (bool)(time_n_flags & (1LL << 33));
+    U32 time_stamp = (U32)(time_n_flags & 0x00000000ffffffff);
+
+    LLIMModel::getInstance()->processAddingMessage(session_id, from, from_id, message_txt, log2file, is_region_msg, time_stamp);
+}
 
-LLIMModel::LLIMModel() 
+void translateFailure(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, const std::string& utf8_text,
+                        U64 time_n_flags, int status, const std::string err_msg)
+{
+    std::string message_txt(utf8_text);
+    std::string msg = LLTrans::getString("TranslationFailed", LLSD().with("[REASON]", err_msg));
+    LLStringUtil::replaceString(msg, "\n", " "); // we want one-line error messages
+    message_txt += XL8_START_TAG + msg + XL8_END_TAG;
+
+    // Extract info packed in time_n_flags
+    bool log2file = (bool)(time_n_flags & (1LL << 32));
+    bool is_region_msg = (bool)(time_n_flags & (1LL << 33));
+    U32 time_stamp = (U32)(time_n_flags & 0x00000000ffffffff);
+
+    LLIMModel::getInstance()->processAddingMessage(session_id, from, from_id, message_txt, log2file, is_region_msg, time_stamp);
+}
+
+void chatterBoxHistoryCoro(std::string url, LLUUID sessionId, std::string from, std::string message, U32 timestamp)
+{   // if parameters from, message and timestamp have values, they are a message that opened chat
+    LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
+    LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
+        httpAdapter(new LLCoreHttpUtil::HttpCoroutineAdapter("ChatHistory", httpPolicy));
+    LLCore::HttpRequest::ptr_t httpRequest(new LLCore::HttpRequest);
+
+    LLSD postData;
+    postData["method"] = "fetch history";
+    postData["session-id"] = sessionId;
+
+    LL_DEBUGS("ChatHistory") << sessionId << ": Chat history posting " << postData << " to " << url
+        << ", from " << from << ", message " << message << ", timestamp " << (S32)timestamp << LL_ENDL;
+
+    LLSD result = httpAdapter->postAndSuspend(httpRequest, url, postData);
+
+    LLSD httpResults = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS];
+    LLCore::HttpStatus status = LLCoreHttpUtil::HttpCoroutineAdapter::getStatusFromLLSD(httpResults);
+
+    if (!status)
+    {
+        LL_WARNS("ChatHistory") << sessionId << ": Bad HTTP response in chatterBoxHistoryCoro"
+            << ", results: " << httpResults << LL_ENDL;
+        return;
+    }
+
+    // Add history to IM session
+    LLSD history = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS_CONTENT];
+
+    LL_DEBUGS("ChatHistory") << sessionId << ": Chat server history fetch returned " << history << LL_ENDL;
+
+    try
+    {
+        LLIMModel::LLIMSession* session = LLIMModel::getInstance()->findIMSession(sessionId);
+        if (session && history.isArray())
+        {   // Result array is sorted oldest to newest
+            if (history.size() > 0)
+            {   // History from the chat server has an integer 'time' value timestamp.   Create 'datetime' string which will match
+                // what we have from the local history cache
+                for (LLSD::array_iterator cur_server_hist = history.beginArray(), endLists = history.endArray();
+                    cur_server_hist != endLists;
+                    cur_server_hist++)
+                {
+                    if ((*cur_server_hist).isMap())
+                    {   // Take the 'time' value from the server and make the date-time string that will be in local cache log files
+                        //   {'from_id':u7aa8c222-8a81-450e-b3d1-9c28491ef717,'message':'Can you hear me now?','from':'Chat Tester','num':i86,'time':r1.66501e+09}
+                        U32 timestamp = (U32)((*cur_server_hist)[LL_IM_TIME].asInteger());
+                        (*cur_server_hist)[LL_IM_DATE_TIME] = LLLogChat::timestamp2LogString(timestamp, true);
+                    }
+                }
+
+                session->addMessagesFromServerHistory(history, from, message, timestamp);
+
+                // Display the newly added messages
+                LLFloaterIMSession* floater = LLFloaterReg::findTypedInstance<LLFloaterIMSession>("impanel", sessionId);
+                if (floater && floater->isInVisibleChain())
+                {
+                    floater->updateMessages();
+                }
+            }
+            else
+            {
+                LL_DEBUGS("ChatHistory") << sessionId << ": Empty history from chat server, nothing to add" << LL_ENDL;
+            }
+        }
+        else if (session && !history.isArray())
+        {
+            LL_WARNS("ChatHistory") << sessionId << ": Bad array data fetching chat history" << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS("ChatHistory") << sessionId << ": Unable to find session fetching chat history" << LL_ENDL;
+        }
+    }
+    catch (...)
+    {
+        LOG_UNHANDLED_EXCEPTION("chatterBoxHistoryCoro");
+        LL_WARNS("ChatHistory") << "chatterBoxHistoryCoro unhandled exception while processing data for session " << sessionId << LL_ENDL;
+    }
+}
+
+LLIMModel::LLIMModel()
 {
 	addNewMsgCallback(boost::bind(&LLFloaterIMSession::newIMCallback, _1));
 	addNewMsgCallback(boost::bind(&on_new_message, _1));
@@ -564,25 +687,25 @@ LLIMModel::LLIMSession::LLIMSession(const LLUUID& session_id, const std::string&
 		else
 		{
 			mSessionType = ADHOC_SESSION;
-		} 
+		}
 	}
 
 	if(mVoiceChannel)
 	{
 		mVoiceChannelStateChangeConnection = mVoiceChannel->setStateChangedCallback(boost::bind(&LLIMSession::onVoiceChannelStateChanged, this, _1, _2, _3));
 	}
-		
+
 	mSpeakers = new LLIMSpeakerMgr(mVoiceChannel);
 
 	// All participants will be added to the list of people we've recently interacted with.
 
-	// we need to add only _active_ speakers...so comment this. 
+	// we need to add only _active_ speakers...so comment this.
 	// may delete this later on cleanup
 	//mSpeakers->addListener(&LLRecentPeople::instance(), "add");
 
 	//we need to wait for session initialization for outgoing ad-hoc and group chat session
 	//correct session id for initiated ad-hoc chat will be received from the server
-	if (!LLIMModel::getInstance()->sendStartSession(mSessionID, mOtherParticipantID, 
+	if (!LLIMModel::getInstance()->sendStartSession(mSessionID, mOtherParticipantID,
 		mInitialTargetIDs, mType))
 	{
 		//we don't need to wait for any responses
@@ -664,7 +787,7 @@ void LLIMModel::LLIMSession::onVoiceChannelStateChanged(const LLVoiceChannel::ES
 					LLStringUtil::format_map_t string_args;
 					string_args["[NAME]"] = other_avatar_name;
 					message = LLTrans::getString("name_started_call", string_args);
-					LLIMModel::getInstance()->addMessage(mSessionID, SYSTEM_FROM, LLUUID::null, message);				
+					LLIMModel::getInstance()->addMessage(mSessionID, SYSTEM_FROM, LLUUID::null, message);
 					break;
 				}
 			case LLVoiceChannel::STATE_CONNECTED :
@@ -768,20 +891,27 @@ void LLIMModel::LLIMSession::sessionInitReplyReceived(const LLUUID& new_session_
 	}
 }
 
-void LLIMModel::LLIMSession::addMessage(const std::string& from, const LLUUID& from_id, const std::string& utf8_text, 
-	const std::string& time, const bool is_history, bool is_region_msg, const LLSD& bonus)
+void LLIMModel::LLIMSession::addMessage(const std::string& from,
+                                        const LLUUID& from_id,
+                                        const std::string& utf8_text,
+                                        const std::string& time,
+                                        const bool is_history,  // comes from a history file or chat server
+                                        const bool is_region_msg,
+                                        const U32 timestamp, // may be zero
+										const LLSD& bonus)   
 {
 	LLSD message;
 	message["from"] = from;
 	message["from_id"] = from_id;
 	message["message"] = utf8_text;
-	message["time"] = time; 
-	message["index"] = (LLSD::Integer)mMsgs.size(); 
+	message["time"] = time;         // string used in display, may be full data YYYY/MM/DD HH:MM or just HH:MM
+    message["timestamp"] = (S32)timestamp;          // use string? LLLogChat::timestamp2LogString(timestamp, true);
+	message["index"] = (LLSD::Integer)mMsgs.size();
 	message["is_history"] = is_history;
 	message["is_region_msg"] = is_region_msg;
     message["is_announcement"] = bonus.has("announcement");
 
-	mMsgs.push_front(message); 
+	mMsgs.push_front(message);          // Add most recent messages to the front of mMsgs
 
 	if (mSpeakers && from_id.notNull())
 	{
@@ -790,35 +920,281 @@ void LLIMModel::LLIMSession::addMessage(const std::string& from, const LLUUID& f
 	}
 }
 
-void LLIMModel::LLIMSession::addMessagesFromHistory(const std::list<LLSD>& history)
+void LLIMModel::LLIMSession::addMessagesFromHistoryCache(const chat_message_list_t& history)
 {
-	std::list<LLSD>::const_iterator it = history.begin();
-	while (it != history.end())
-	{
-		const LLSD& msg = *it;
+    // Add the messages from the local cached chat history to the session window
+    for (const auto& msg : history)
+    {
+        std::string from = msg[LL_IM_FROM];
+        LLUUID from_id;
+        if (msg[LL_IM_FROM_ID].isDefined())
+        {
+            from_id = msg[LL_IM_FROM_ID].asUUID();
+        }
+        else
+        {   // convert it to a legacy name if we have a complete name
+            std::string legacy_name = gCacheName->buildLegacyName(from);
+            from_id = LLAvatarNameCache::getInstance()->findIdByName(legacy_name);
+        }
 
-		std::string from = msg[LL_IM_FROM];
-		LLUUID from_id;
-		if (msg[LL_IM_FROM_ID].isDefined())
-		{
-			from_id = msg[LL_IM_FROM_ID].asUUID();
-		}
-		else
-		{
-			// convert it to a legacy name if we have a complete name
-			std::string legacy_name = gCacheName->buildLegacyName(from);
-			from_id = LLAvatarNameCache::getInstance()->findIdByName(legacy_name);
-		}
+        // Save the last minute of messages so we can merge with the chat server history.
+        // Really would be nice to have a numeric timestamp in the local cached chat file
+        const std::string & msg_time_str = msg[LL_IM_DATE_TIME].asString();
+        if (mLastHistoryCacheDateTime != msg_time_str)
+        {
+            mLastHistoryCacheDateTime = msg_time_str;   // Reset to the new time
+            mLastHistoryCacheMsgs.clear();
+        }
+        mLastHistoryCacheMsgs.push_front(msg);
+        LL_DEBUGS("ChatHistory") << mSessionID << ": Adding history cache message: " << msg << LL_ENDL;
+
+        // Add message from history cache to the display
+        addMessage(from, from_id, msg[LL_IM_TEXT], msg[LL_IM_TIME], true, false, 0);   // from history data, not region message, no timestamp
+    }
+}
+
+void LLIMModel::LLIMSession::addMessagesFromServerHistory(const LLSD& history,             // Array of chat messages from chat server
+                                                        const std::string& target_from,    // Sender of message that opened chat
+                                                        const std::string& target_message, // Message text that opened chat
+                                                        U32 timestamp)                     // timestamp of message that opened chat
+{   // Add messages from history returned by the chat server.
+
+    // The session mMsgs may contain chat messages from the local history cache file, and possibly one or more newly
+    // arrived chat messages.   If the chat window was manually opened, these will be empty and history can
+    // more easily merged.    The history from the server, however, may overlap what is in the file and those must also be merged.
+
+    // At this point, the session mMsgs can have
+    //   no messages
+    //   nothing from history file cache, but one or more very recently arrived messages,
+    //   messages from history file cache, no recent chat
+    //   messages from history file cache, one or more very recent messages
+    //
+    // The chat history from server can possibly contain:
+    //   no messages
+    //   messages that start back before anything in the local file (obscure case, but possible)
+    //   messages that match messages from the history file cache
+    //   messages from the last hour, new to the viewer
+    //   one or more messages that match most recently received chat (the one that opened the window)
+    // In other words:
+    //   messages from chat server may or may not match what we already have in mMsgs
+    //   We can drop anything that is during the time span covered by the local cache file
+    //   To keep things simple, drop any chat data older than the local cache file
+
+    if (!history.isArray())
+    {
+        LL_WARNS("ChatHistory") << mSessionID << ": Unexpected history data not array, type " << (S32)history.type() << LL_ENDL;
+        return;
+    }
 
-		std::string timestamp = msg[LL_IM_TIME];
-		std::string text = msg[LL_IM_TEXT];
+    if (history.size() == 0)
+    {   // If history is empty
+        LL_DEBUGS("ChatHistory") << mSessionID << ": addMessagesFromServerHistory() has empty history, nothing to merge" << LL_ENDL;
+        return;
+    }
 
-		addMessage(from, from_id, text, timestamp, true);
+    if (history.size() == 1 &&          // Server chat history has one entry,
+        target_from.length() > 0 &&     // and we have a chat message that just arrived
+        mMsgs.size() > 0)               // and we have some data in the window - assume the history message is there.
+    {   // This is the common case where a group chat is silent for a while, and then one message is sent.
+        LL_DEBUGS("ChatHistory") << mSessionID << ": addMessagesFromServerHistory() only has chat message just received." << LL_ENDL;
+        return;
+    }
 
-		it++;
-	}
+    LL_DEBUGS("ChatHistory") << mSessionID << ": addMessagesFromServerHistory() starting with mMsg.size() " << mMsgs.size()
+        << " adding history with " << history.size() << " messages"
+        << ", target_from: " << target_from
+        << ", target_message: " << target_message
+        << ", timestamp: " << (S32)timestamp << LL_ENDL;
+
+    // At start of merging, mMsgs is either empty, has some chat messages read from a local cache file, and may have
+    // one or more messages that just arrived from the server.
+    U32 match_timestamp = 0;
+    chat_message_list_t shift_msgs;
+    if (mMsgs.size() > 0 &&
+        target_from.length() > 0
+        && target_message.length() > 0)
+    {   // Find where to insert the history messages by popping off a few in the session.
+        // The most common case is one duplciate message, the one that opens a chat session
+        while (mMsgs.size() > 0)
+        {
+            // The "time" value from mMsgs is a string, either just time HH:MM or a full date and time
+            LLSD cur_msg = mMsgs.front();       // Get most recent message from the chat display (front of mMsgs list)
+
+            if (cur_msg.isMap())
+            {
+                LL_DEBUGS("ChatHistoryCompare") << mSessionID << ": Finding insertion point, looking at cur_msg: " << cur_msg << LL_ENDL;
+
+                match_timestamp = cur_msg["timestamp"].asInteger();  // get timestamp of message in the session, may be zero
+                if ((S32)timestamp > match_timestamp)
+                {
+                    LL_DEBUGS("ChatHistory") << mSessionID << ": found older chat message: " << cur_msg
+                        << ", timestamp " << (S32)timestamp
+                        << " vs. match_timestamp " << match_timestamp
+                        << ", shift_msgs size is " << shift_msgs.size() << LL_ENDL;
+                    break;
+                }
+                // Have the matching message or one more recent: these need to be at the end
+                shift_msgs.push_front(cur_msg);     // Move chat message to temp list.
+                mMsgs.pop_front();                  // Normally this is just one message
+                LL_DEBUGS("ChatHistory") << mSessionID << ": shifting chat message " << cur_msg
+                    << " to be inserted at end, shift_msgs size is " << shift_msgs.size()
+                    << ", match_timestamp " << match_timestamp
+                    << ", timestamp " << (S32)timestamp << LL_ENDL;
+            }
+            else
+            {
+                LL_DEBUGS("ChatHistory") << mSessionID << ": Unexpected non-map entry in session messages: " << cur_msg << LL_ENDL;
+                return;
+            }
+        }
+    }
+
+    // Now merge messages from server history data into the session display.   The history data
+    // from the local file may overlap with the chat messages from the server.
+    // Drop any messages from the chat server history that are before the latest one from the local history file.
+    // Unfortunately, messages from the local file don't have timestamps - just datetime strings
+    LLSD::array_const_iterator cur_history_iter = history.beginArray();
+    while (cur_history_iter != history.endArray())
+    {
+        const LLSD &cur_server_hist = *cur_history_iter;
+        cur_history_iter++;
+
+        if (cur_server_hist.isMap())
+        {   // Each server history entry looks like
+            //   { 'from':'Laggy Avatar', 'from_id' : u72345678 - 744f - 43b9 - 98af - b06f1c76ddda, 'index' : i24, 'is_history' : 1, 'message' : 'That was slow', 'time' : '02/13/2023 10:03', 'timestamp' : i1676311419 }
+
+            // If we reach the message that opened our window, stop adding messages
+            U32 history_msg_timestamp = (U32)cur_server_hist[LL_IM_TIME].asInteger();
+            if ((match_timestamp > 0 && match_timestamp <= history_msg_timestamp) ||
+                (timestamp > 0 && timestamp <= history_msg_timestamp))
+            {   // we found the message we matched, so stop inserting from chat server history
+                LL_DEBUGS("ChatHistoryCompare") << "Found end of chat history insertion with match_timestamp " << (S32)match_timestamp
+                    << " vs. history_msg_timestamp " << (S32)history_msg_timestamp
+                    << " vs. timestamp " << (S32)timestamp
+                    << LL_ENDL;
+                break;
+            }
+            LL_DEBUGS("ChatHistoryCompare") << "Compared match_timestamp " << (S32)match_timestamp
+                << " vs. history_msg_timestamp " << (S32)history_msg_timestamp << LL_ENDL;
+
+            bool add_chat_to_conversation = true;
+            if (!mLastHistoryCacheDateTime.empty())
+            {   // Skip past the any from server that are older than what we already read from the history file.
+                std::string history_datetime = cur_server_hist[LL_IM_DATE_TIME].asString();
+                if (history_datetime.empty())
+                {
+                    history_datetime = cur_server_hist[LL_IM_TIME].asString();
+                }
+
+                if (history_datetime < mLastHistoryCacheDateTime)
+                {
+                    LL_DEBUGS("ChatHistoryCompare") << "Skipping message from chat server history since it's older than messages the session already has."
+                        << history_datetime << " vs  " << mLastHistoryCacheDateTime << LL_ENDL;
+                    add_chat_to_conversation = false;
+                }
+                else if (history_datetime > mLastHistoryCacheDateTime)
+                {   // The message from the chat server is more recent than the last one from the local cache file.   Add it
+                    LL_DEBUGS("ChatHistoryCompare") << "Found message dated "
+                        << history_datetime << " vs " << mLastHistoryCacheDateTime
+                        << ", adding new message from chat server history " << cur_server_hist << LL_ENDL;
+                }
+                else   // (history_datetime == mLastHistoryCacheDateTime)
+                {      // Messages are in the same minute as the last from the cache log file.
+                    const std::string & history_msg_text = cur_server_hist[LL_IM_TEXT];
+
+                    // Look in the saved messages from the history file that have the same time
+                    for (const auto& scan_msg : mLastHistoryCacheMsgs)
+                    {
+                        LL_DEBUGS("ChatHistoryCompare") << "comparing messages " << scan_msg[LL_IM_TEXT]
+                            << " with " << cur_server_hist << LL_ENDL;
+                        if (scan_msg.size() > 0)
+                        {   // Extra work ... the history_msg_text value may have been translated, i.e. "I am confused (je suis confus)"
+                            //  while the server history will only have the first part "I am confused"
+                            std::string target_compare(scan_msg[LL_IM_TEXT]);
+                            if (target_compare.size() > history_msg_text.size() + XL8_PADDING &&
+                                target_compare.substr(history_msg_text.size(), XL8_START_TAG.size()) == XL8_START_TAG &&
+                                target_compare.substr(target_compare.size() - XL8_END_TAG.size()) == XL8_END_TAG)
+                            {   // This really looks like a "translated string (cadena traducida)" so just compare the source part
+                                LL_DEBUGS("ChatHistory") << mSessionID << ": Found translated chat " << target_compare
+                                    << " when comparing to history " << history_msg_text
+                                    << ", will truncate" << LL_ENDL;
+                                target_compare = target_compare.substr(0, history_msg_text.size());
+                            }
+                            if (history_msg_text == target_compare)
+                            {   // Found a match, so don't add a duplicate chat message to the window
+                                LL_DEBUGS("ChatHistory") << mSessionID << ": Found duplicate message text " << history_msg_text
+                                    << " : " << (S32)history_msg_timestamp << ", matching datetime " << history_datetime << LL_ENDL;
+                                add_chat_to_conversation = false;
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+
+            LLUUID sender_id = cur_server_hist[LL_IM_FROM_ID].asUUID();
+            if (add_chat_to_conversation)
+            {   // Check if they're muted
+                if (LLMuteList::getInstance()->isMuted(sender_id, LLMute::flagTextChat))
+                {
+                    add_chat_to_conversation = false;
+                    LL_DEBUGS("ChatHistory") << mSessionID << ": Skipped adding chat from " << sender_id
+                        << " as muted, message: " << cur_server_hist
+                        << LL_ENDL;
+                }
+            }
+
+            if (add_chat_to_conversation)
+            {   // Finally add message to the chat session
+                std::string chat_time_str = LLConversation::createTimestamp((U64Seconds)history_msg_timestamp);
+                std::string sender_name = cur_server_hist[LL_IM_FROM].asString();
+
+                std::string history_msg_text = cur_server_hist[LL_IM_TEXT].asString();
+                LLSD message;
+                message["from"] = sender_name;
+                message["from_id"] = sender_id;
+                message["message"] = history_msg_text;
+                message["time"] = chat_time_str;
+                message["timestamp"] = (S32)history_msg_timestamp;
+                message["index"] = (LLSD::Integer)mMsgs.size();
+                message["is_history"] = true;
+                mMsgs.push_front(message);
+
+                LL_DEBUGS("ChatHistory") << mSessionID << ": push_front() adding group chat history message " << message << LL_ENDL;
+
+                // Add chat history messages to the local cache file, only in the case where we opened the chat window
+                // Need to solve the logic around messages that arrive and open chat - at this point, they've already been added to the
+                //   local history cache file.   If we append messages here, it will be out of order.
+                if (target_from.empty() && target_message.empty())
+                {
+                    LLIMModel::getInstance()->logToFile(LLIMModel::getInstance()->getHistoryFileName(mSessionID),
+                        sender_name, sender_id, history_msg_text);
+                }
+            }
+        }
+    }
+
+    S32 shifted_size = shift_msgs.size();
+    while (shift_msgs.size() > 0)
+    {   // Finally add back any new messages, and tweak the index value to be correct.
+        LLSD newer_message = shift_msgs.front();
+        shift_msgs.pop_front();
+        S32 old_index = newer_message["index"];
+        newer_message["index"] = (LLSD::Integer)mMsgs.size();   // Update the index to match the new position in the conversation
+        LL_DEBUGS("ChatHistory") << mSessionID << ": Re-adding newest group chat history messages from " << newer_message["from"]
+            << ", text: " << newer_message["message"]
+            << " old index " << old_index << ", new index " << newer_message["index"] << LL_ENDL;
+        mMsgs.push_front(newer_message);
+    }
+
+    LL_DEBUGS("ChatHistory") << mSessionID << ": addMessagesFromServerHistory() exiting with mMsg.size() " << mMsgs.size()
+        << ", shifted " << shifted_size << " messages" << LL_ENDL;
+
+    mLastHistoryCacheDateTime.clear();  // Don't need this data
+    mLastHistoryCacheMsgs.clear();
 }
 
+
 void LLIMModel::LLIMSession::chatFromLogFile(LLLogChat::ELogLineType type, const LLSD& msg, void* userdata)
 {
 	if (!userdata) return;
@@ -827,26 +1203,29 @@ void LLIMModel::LLIMSession::chatFromLogFile(LLLogChat::ELogLineType type, const
 
 	if (type == LLLogChat::LOG_LINE)
 	{
-		self->addMessage("", LLSD(), msg["message"].asString(), "", true);
+        LL_DEBUGS("ChatHistory") << "chatFromLogFile() adding LOG_LINE message from " << msg << LL_ENDL;
+        self->addMessage("", LLSD(), msg["message"].asString(), "", true, false, 0);        // from history data, not region message, no timestamp
 	}
 	else if (type == LLLogChat::LOG_LLSD)
 	{
-		self->addMessage(msg["from"].asString(), msg["from_id"].asUUID(), msg["message"].asString(), msg["time"].asString(), true);
+        LL_DEBUGS("ChatHistory") << "chatFromLogFile() adding LOG_LLSD message from " << msg << LL_ENDL;
+        self->addMessage(msg["from"].asString(), msg["from_id"].asUUID(), msg["message"].asString(), msg["time"].asString(), true, false, 0);  // from history data, not region message, no timestamp
 	}
 }
 
 void LLIMModel::LLIMSession::loadHistory()
 {
 	mMsgs.clear();
+    mLastHistoryCacheMsgs.clear();
+    mLastHistoryCacheDateTime.clear();
 
 	if ( gSavedPerAccountSettings.getBOOL("LogShowHistory") )
 	{
-		std::list<LLSD> chat_history;
-
-		//involves parsing of a chat history
+        // read and parse chat history from local file
+        chat_message_list_t chat_history;
 		LLLogChat::loadChatHistory(mHistoryFileName, chat_history, LLSD(), isGroupChat());
-		addMessagesFromHistory(chat_history);
-	}
+        addMessagesFromHistoryCache(chat_history);
+    }
 }
 
 LLIMModel::LLIMSession* LLIMModel::findIMSession(const LLUUID& session_id) const
@@ -866,7 +1245,7 @@ LLIMModel::LLIMSession* LLIMModel::findAdHocIMSession(const uuid_vec_t& ids)
 	for (; it != mId2SessionMap.end(); ++it)
 	{
 		LLIMSession* session = (*it).second;
-	
+
 		if (!session->isAdHoc()) continue;
 		if (session->mInitialTargetIDs.size() != num) continue;
 
@@ -877,8 +1256,8 @@ LLIMModel::LLIMSession* LLIMModel::findAdHocIMSession(const uuid_vec_t& ids)
 		{
 			tmp_list.remove(*iter);
 			++iter;
-			
-			if (tmp_list.empty()) 
+
+			if (tmp_list.empty())
 			{
 				break;
 			}
@@ -934,7 +1313,7 @@ void LLIMModel::LLIMSession::buildHistoryFileName()
 	if (isAdHoc())
 	{
 		/* in case of outgoing ad-hoc sessions we need to make specilized names
-		* if this naming system is ever changed then the filtering definitions in 
+		* if this naming system is ever changed then the filtering definitions in
 		* lllogchat.cpp need to be change acordingly so that the filtering for the
 		* date stamp code introduced in STORM-102 will work properly and not add
 		* a date stamp to the Ad-hoc conferences.
@@ -947,7 +1326,7 @@ void LLIMModel::LLIMSession::buildHistoryFileName()
 		else
 		{
 			//in case of incoming ad-hoc sessions
-			mHistoryFileName = mName + " " + LLLogChat::timestamp(true) + " " + mSessionID.asString().substr(0, 4);
+			mHistoryFileName = mName + " " + LLLogChat::timestamp2LogString(0, true) + " " + mSessionID.asString().substr(0, 4);
 		}
 	}
 	else if (isP2P()) // look up username to use as the log name
@@ -978,7 +1357,7 @@ void LLIMModel::LLIMSession::buildHistoryFileName()
 LLUUID LLIMModel::LLIMSession::generateHash(const std::set<LLUUID>& sorted_uuids)
 {
 	LLMD5 md5_uuid;
-	
+
 	std::set<LLUUID>::const_iterator it = sorted_uuids.begin();
 	while (it != sorted_uuids.end())
 	{
@@ -1040,7 +1419,7 @@ void LLIMModel::testMessages()
 
 	S32 rand1 = ll_rand(sizeof firstname)/(sizeof firstname[0]);
 	S32 rand2 = ll_rand(sizeof lastname)/(sizeof lastname[0]);
-	
+
 	from = firstname[rand1] + " " + lastname[rand2];
 	bot2_id.generate(from);
 	LLUUID bot2_session_id = LLIMMgr::computeSessionID(IM_NOTHING_SPECIAL, bot2_id);
@@ -1050,7 +1429,7 @@ void LLIMModel::testMessages()
 }
 
 //session name should not be empty
-bool LLIMModel::newSession(const LLUUID& session_id, const std::string& name, const EInstantMessage& type, 
+bool LLIMModel::newSession(const LLUUID& session_id, const std::string& name, const EInstantMessage& type,
 						   const LLUUID& other_participant_id, const uuid_vec_t& ids, bool voice, bool has_offline_msg)
 {
 	if (name.empty())
@@ -1093,7 +1472,7 @@ bool LLIMModel::clearSession(const LLUUID& session_id)
 	return true;
 }
 
-void LLIMModel::getMessages(const LLUUID& session_id, std::list<LLSD>& messages, int start_index, const bool sendNoUnreadMsgs)
+void LLIMModel::getMessages(const LLUUID& session_id, chat_message_list_t& messages, int start_index, const bool sendNoUnreadMsgs)
 {
 	getMessagesSilently(session_id, messages, start_index);
 
@@ -1103,7 +1482,7 @@ void LLIMModel::getMessages(const LLUUID& session_id, std::list<LLSD>& messages,
 	}
 }
 
-void LLIMModel::getMessagesSilently(const LLUUID& session_id, std::list<LLSD>& messages, int start_index)
+void LLIMModel::getMessagesSilently(const LLUUID& session_id, chat_message_list_t& messages, int start_index)
 {
 	LLIMSession* session = findIMSession(session_id);
 	if (!session)
@@ -1114,7 +1493,7 @@ void LLIMModel::getMessagesSilently(const LLUUID& session_id, std::list<LLSD>& m
 
 	int i = session->mMsgs.size() - start_index;
 
-	for (std::list<LLSD>::iterator iter = session->mMsgs.begin();
+	for (chat_message_list_t::iterator iter = session->mMsgs.begin();
 		iter != session->mMsgs.end() && i > 0;
 		iter++)
 	{
@@ -1136,7 +1515,7 @@ void LLIMModel::sendNoUnreadMessages(const LLUUID& session_id)
 
 	session->mNumUnread = 0;
 	session->mParticipantUnreadMessageCount = 0;
-	
+
 	LLSD arg;
 	arg["session_id"] = session_id;
 	arg["num_unread"] = 0;
@@ -1144,17 +1523,24 @@ void LLIMModel::sendNoUnreadMessages(const LLUUID& session_id)
 	mNoUnreadMsgsSignal(arg);
 }
 
-bool LLIMModel::addToHistory(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, const std::string& utf8_text, bool is_region_msg, const LLSD& bonus) {
-	
+bool LLIMModel::addToHistory(const LLUUID& session_id,
+                             const std::string& from,
+                             const LLUUID& from_id,
+                             const std::string& utf8_text,
+                             bool is_region_msg,
+                             U32 timestamp,
+							 const LLSD& bonus)
+{
 	LLIMSession* session = findIMSession(session_id);
 
-	if (!session) 
+	if (!session)
 	{
 		LL_WARNS() << "session " << session_id << "does not exist " << LL_ENDL;
 		return false;
 	}
 
-	session->addMessage(from, from_id, utf8_text, LLLogChat::timestamp(false), false, is_region_msg, bonus); //might want to add date separately
+    // This is where a normal arriving message is added to the session.   Note that the time string created here is without the full date
+	session->addMessage(from, from_id, utf8_text, LLLogChat::timestamp2LogString(timestamp, false), false, is_region_msg, timestamp, bonus);
 
 	return true;
 }
@@ -1162,14 +1548,14 @@ bool LLIMModel::addToHistory(const LLUUID& session_id, const std::string& from,
 bool LLIMModel::logToFile(const std::string& file_name, const std::string& from, const LLUUID& from_id, const std::string& utf8_text)
 {
 	if (gSavedPerAccountSettings.getS32("KeepConversationLogTranscripts") > 1)
-	{	
+	{
 		std::string from_name = from;
 
 		LLAvatarName av_name;
-		if (!from_id.isNull() && 
+		if (!from_id.isNull() &&
 			LLAvatarNameCache::get(from_id, &av_name) &&
 			!av_name.isDisplayNameDefault())
-		{	
+		{
 			from_name = av_name.getCompleteName();
 		}
 
@@ -1183,43 +1569,63 @@ bool LLIMModel::logToFile(const std::string& file_name, const std::string& from,
 	}
 }
 
-bool LLIMModel::proccessOnlineOfflineNotification(
-	const LLUUID& session_id, 
-	const std::string& utf8_text)
+void LLIMModel::proccessOnlineOfflineNotification(
+	const LLUUID& session_id,
+    const std::string& utf8_text)
 {
 	// Add system message to history
-	return addMessage(session_id, SYSTEM_FROM, LLUUID::null, utf8_text);
+	addMessage(session_id, SYSTEM_FROM, LLUUID::null, utf8_text);
 }
 
-bool LLIMModel::addMessage(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, 
-						   const std::string& utf8_text, bool log2file, bool is_region_msg, const LLSD& bonus) { 
+void LLIMModel::addMessage(const LLUUID& session_id, const std::string& from, const LLUUID& from_id,
+						   const std::string& utf8_text, bool log2file /* = true */, bool is_region_msg, /* = false */ U32 time_stamp /* = 0 */, const LLSD& bonus)
+{
+    if (gSavedSettings.getBOOL("TranslateChat") && (from != SYSTEM_FROM))
+    {
+        const std::string from_lang = ""; // leave empty to trigger autodetect
+        const std::string to_lang = LLTranslate::getTranslateLanguage();
+        U64 time_n_flags = ((U64) time_stamp) | (log2file ? (1LL << 32) : 0) | (is_region_msg ? (1LL << 33) : 0);   // boost::bind has limited parameters
+        LLTranslate::translateMessage(from_lang, to_lang, utf8_text,
+            boost::bind(&translateSuccess, session_id, from, from_id, utf8_text, time_n_flags, utf8_text, from_lang, _1, _2),
+            boost::bind(&translateFailure, session_id, from, from_id, utf8_text, time_n_flags, _1, _2));
+    }
+    else
+    {
+        processAddingMessage(session_id, from, from_id, utf8_text, log2file, is_region_msg, time_stamp, bonus);
+    }
+}
 
-	LLIMSession* session = addMessageSilently(session_id, from, from_id, utf8_text, log2file, is_region_msg, bonus);
-	if (!session) return false;
+void LLIMModel::processAddingMessage(const LLUUID& session_id, const std::string& from, const LLUUID& from_id,
+    const std::string& utf8_text, bool log2file, bool is_region_msg, U32 time_stamp, const LLSD& bonus)
+{
+    LLIMSession* session = addMessageSilently(session_id, from, from_id, utf8_text, log2file, is_region_msg, time_stamp, bonus);
+    if (!session)
+        return;
 
-	//good place to add some1 to recent list
-	//other places may be called from message history.
-	if( !from_id.isNull() &&
-		( session->isP2PSessionType() || session->isAdHocSessionType() ) )
-		LLRecentPeople::instance().add(from_id);
+    //good place to add some1 to recent list
+    //other places may be called from message history.
+    if( !from_id.isNull() &&
+        ( session->isP2PSessionType() || session->isAdHocSessionType() ) )
+        LLRecentPeople::instance().add(from_id);
 
-	// notify listeners
-	LLSD arg;
-	arg["session_id"] = session_id;
-	arg["num_unread"] = session->mNumUnread;
-	arg["participant_unread"] = session->mParticipantUnreadMessageCount;
-	arg["message"] = utf8_text;
-	arg["from"] = from;
-	arg["from_id"] = from_id;
-	arg["time"] = LLLogChat::timestamp(false);
-	arg["session_type"] = session->mSessionType;
-	mNewMsgSignal(arg);
+    // notify listeners
+    LLSD arg;
+    arg["session_id"] = session_id;
+    arg["num_unread"] = session->mNumUnread;
+    arg["participant_unread"] = session->mParticipantUnreadMessageCount;
+    arg["message"] = utf8_text;
+    arg["from"] = from;
+    arg["from_id"] = from_id;
+    arg["time"] = LLLogChat::timestamp2LogString(time_stamp, true);
+    arg["session_type"] = session->mSessionType;
+    arg["is_region_msg"] = is_region_msg;
 
-	return true;
+    mNewMsgSignal(arg);
 }
 
-LLIMModel::LLIMSession* LLIMModel::addMessageSilently(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, 
-													 const std::string& utf8_text, bool log2file, bool is_region_msg, const LLSD& bonus)
+LLIMModel::LLIMSession* LLIMModel::addMessageSilently(const LLUUID& session_id, const std::string& from, const LLUUID& from_id,
+													  const std::string& utf8_text, bool log2file /* = true */, bool is_region_msg, /* false */
+                                                      U32 timestamp /* = 0 */, const LLSD& bonus)
 {
 	LLIMSession* session = findIMSession(session_id);
 
@@ -1235,12 +1641,12 @@ LLIMModel::LLIMSession* LLIMModel::addMessageSilently(const LLUUID& session_id,
 		from_name = SYSTEM_FROM;
 	}
 
-	addToHistory(session_id, from_name, from_id, utf8_text, is_region_msg, bonus);
+	addToHistory(session_id, from_name, from_id, utf8_text, is_region_msg, timestamp, bonus);
 	if (log2file)
 	{
 		logToFile(getHistoryFileName(session_id), from_name, from_id, utf8_text);
 	}
-	
+
 	session->mNumUnread++;
 
 	//update count of unread messages from real participant
@@ -1345,7 +1751,7 @@ const std::string& LLIMModel::getHistoryFileName(const LLUUID& session_id) const
 
 
 // TODO get rid of other participant ID
-void LLIMModel::sendTypingState(LLUUID session_id, LLUUID other_participant_id, BOOL typing) 
+void LLIMModel::sendTypingState(LLUUID session_id, LLUUID other_participant_id, BOOL typing)
 {
 	std::string name;
 	LLAgentUI::buildFullname(name);
@@ -1376,7 +1782,7 @@ void LLIMModel::sendLeaveSession(const LLUUID& session_id, const LLUUID& other_p
 			FALSE,
 			gAgent.getSessionID(),
 			other_participant_id,
-			name, 
+			name,
 			LLStringUtil::null,
 			IM_ONLINE,
 			IM_SESSION_LEAVE,
@@ -1397,7 +1803,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
 
 	const LLRelationship* info = NULL;
 	info = LLAvatarTracker::instance().getBuddyInfo(other_participant_id);
-	
+
 	U8 offline = (!info || info->isOnline()) ? IM_ONLINE : IM_OFFLINE;
 	// Old call to send messages to SLim client,  no longer supported.
 	//if((offline == IM_OFFLINE) && (LLVoiceClient::getInstance()->isOnlineSIP(other_participant_id)))
@@ -1405,7 +1811,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
 	//	// User is online through the OOW connector, but not with a regular viewer.  Try to send the message via SLVoice.
 	//	sent = LLVoiceClient::getInstance()->sendTextMessage(other_participant_id, utf8_text);
 	//}
-	
+
 	if(!sent)
 	{
 		// Send message normally.
@@ -1500,7 +1906,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
 		}
 	}
 
-	if((dialog == IM_NOTHING_SPECIAL) && 
+	if((dialog == IM_NOTHING_SPECIAL) &&
 	   (other_participant_id.notNull()))
 	{
 		// Do we have to replace the /me's here?
@@ -1538,7 +1944,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
 		// to Recent People to prevent showing of an item with (?? ?)(?? ?), sans the spaces. See EXT-8246.
 		// Concrete participants will be added into this list once they sent message in chat.
 		if (IM_SESSION_INVITE == dialog) return;
-			
+
 		if (IM_SESSION_CONFERENCE_START == dialog) // outgoing ad-hoc session
 		{
 			// Add only online members of conference to recent list (EXT-8658)
@@ -1620,7 +2026,7 @@ void start_deprecated_conference_chat(
 	for(S32 i = 0; i < count; ++i)
 	{
 		LLUUID agent_id = agents_to_invite[i].asUUID();
-		
+
 		memcpy(pos, &agent_id, UUID_BYTES);
 		pos += UUID_BYTES;
 	}
@@ -1636,7 +2042,7 @@ void start_deprecated_conference_chat(
 		bucket_size);
 
 	gAgent.sendReliableMessage();
- 
+
 	delete[] bucket;
 }
 
@@ -1857,7 +2263,7 @@ void LLCallDialogManager::onVoiceChannelChangedInt(const LLUUID &session_id)
 {
 	LLIMModel::LLIMSession* session = LLIMModel::getInstance()->findIMSession(session_id);
 	if(!session)
-	{		
+	{
 		mPreviousSessionlName = mCurrentSessionlName;
 		mCurrentSessionlName = ""; // Empty string results in "Nearby Voice Chat" after substitution
 		return;
@@ -1880,7 +2286,7 @@ void LLCallDialogManager::onVoiceChannelChangedInt(const LLUUID &session_id)
 	if (LLVoiceChannel::getCurrentVoiceChannel()->getState() == LLVoiceChannel::STATE_CALL_STARTED &&
 		LLVoiceChannel::getCurrentVoiceChannel()->getCallDirection() == LLVoiceChannel::OUTGOING_CALL)
 	{
-		
+
 		//*TODO get rid of duplicated code
 		LLSD mCallDialogPayload;
 		mCallDialogPayload["session_id"] = mSession->mSessionID;
@@ -1895,7 +2301,7 @@ void LLCallDialogManager::onVoiceChannelChangedInt(const LLUUID &session_id)
 		if(ocd)
 		{
 			ocd->show(mCallDialogPayload);
-		}	
+		}
 	}
 
 }
@@ -1928,7 +2334,7 @@ void LLCallDialogManager::onVoiceChannelStateChangedInt(const LLVoiceChannel::ES
 	mCallDialogPayload["ended_by_agent"] = ended_by_agent;
 
 	switch(new_state)
-	{			
+	{
 	case LLVoiceChannel::STATE_CALL_STARTED :
 		// do not show "Calling to..." if it is incoming call
 		if(direction == LLVoiceChannel::INCOMING_CALL)
@@ -1957,7 +2363,7 @@ void LLCallDialogManager::onVoiceChannelStateChangedInt(const LLVoiceChannel::ES
 	if(ocd)
 	{
 		ocd->show(mCallDialogPayload);
-	}	
+	}
 }
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -1983,9 +2389,9 @@ BOOL LLCallDialog::postBuild()
 {
 	if (!LLDockableFloater::postBuild() || !gToolBarView)
 		return FALSE;
-	
+
 	dockToToolbarButton("speak");
-	
+
 	return TRUE;
 }
 
@@ -2003,15 +2409,15 @@ LLDockControl::DocAt LLCallDialog::getDockControlPos(const std::string& toolbarB
 {
 	LLCommandId command_id(toolbarButtonName);
 	S32 toolbar_loc = gToolBarView->hasCommand(command_id);
-	
+
 	LLDockControl::DocAt doc_at = LLDockControl::TOP;
-	
+
 	switch (toolbar_loc)
 	{
 		case LLToolBarEnums::TOOLBAR_LEFT:
 			doc_at = LLDockControl::RIGHT;
 			break;
-			
+
 		case LLToolBarEnums::TOOLBAR_RIGHT:
 			doc_at = LLDockControl::LEFT;
 			break;
@@ -2020,7 +2426,7 @@ LLDockControl::DocAt LLCallDialog::getDockControlPos(const std::string& toolbarB
 			doc_at = LLDockControl::BOTTOM;
 			break;
 	}
-	
+
 	return doc_at;
 }
 
@@ -2035,7 +2441,7 @@ LLCallDialog(payload)
 	if(instance && instance->getVisible())
 	{
 		instance->onCancel(instance);
-	}	
+	}
 }
 
 void LLCallDialog::draw()
@@ -2092,7 +2498,7 @@ bool LLCallDialog::lifetimeHasExpired()
 	if (mLifetimeTimer.getStarted())
 	{
 		F32 elapsed_time = mLifetimeTimer.getElapsedTimeF32();
-		if (elapsed_time > mLifetime) 
+		if (elapsed_time > mLifetime)
 		{
 			return true;
 		}
@@ -2133,7 +2539,7 @@ void LLOutgoingCallDialog::show(const LLSD& key)
 	}
 	else
 	{
-		getChild<LLUICtrl>("leaving")->setTextArg("[CURRENT_CHAT]", getString("localchat"));		
+		getChild<LLUICtrl>("leaving")->setTextArg("[CURRENT_CHAT]", getString("localchat"));
 	}
 
 	if (!mPayload["disconnected_channel_name"].asString().empty())
@@ -2156,7 +2562,7 @@ void LLOutgoingCallDialog::show(const LLSD& key)
 	{
 		callee_name = getString("anonymous");
 	}
-	
+
 	LLSD callee_id = mPayload["other_user_id"];
 	// Beautification:  Since you know who you called, just show display name
 	std::string title = callee_name;
@@ -2212,7 +2618,7 @@ void LLOutgoingCallDialog::show(const LLSD& key)
 		{
 			const std::string& nearby_str = mPayload["ended_by_agent"] ? NEARBY_P2P_BY_AGENT : NEARBY_P2P_BY_OTHER;
 			getChild<LLTextBox>(nearby_str)->setVisible(true);
-		} 
+		}
 		else
 		{
 			getChild<LLTextBox>("nearby")->setVisible(true);
@@ -2246,7 +2652,7 @@ void LLOutgoingCallDialog::onCancel(void* user_data)
 
 	LLUUID session_id = self->mPayload["session_id"].asUUID();
 	gIMMgr->endCall(session_id);
-	
+
 	self->closeFloater();
 }
 
@@ -2331,7 +2737,7 @@ BOOL LLIncomingCallDialog::postBuild()
         LL_INFOS("IMVIEW") << "IncomingCall: notify_box_type was not provided" << LL_ENDL;
         return TRUE;
     }
-	
+
 	// init notification's lifetime
 	std::istringstream ss( getString("lifetime") );
 	if (!(ss >> mLifetime))
@@ -2506,7 +2912,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
 			if (session_name.empty())
 			{
 				LL_WARNS() << "Received an empty session name from a server" << LL_ENDL;
-				
+
 				switch(type){
 				case IM_SESSION_CONFERENCE_START:
 				case IM_SESSION_GROUP_START:
@@ -2524,17 +2930,17 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
 						if (LLAvatarNameCache::get(caller_id, &av_name))
 						{
 							correct_session_name = av_name.getCompleteName();
-							correct_session_name.append(ADHOC_NAME_SUFFIX); 
+							correct_session_name.append(ADHOC_NAME_SUFFIX);
 						}
 					}
 					LL_INFOS("IMVIEW") << "Corrected session name is " << correct_session_name << LL_ENDL;
 					break;
-				default: 
+				default:
 					LL_WARNS("IMVIEW") << "Received an empty session name from a server and failed to generate a new proper session name" << LL_ENDL;
 					break;
 				}
 			}
-			
+
 			gIMMgr->addSession(correct_session_name, type, session_id, true);
 
 			std::string url = gAgent.getRegion()->getCapability(
@@ -2546,7 +2952,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
                     boost::bind(&chatterBoxInvitationCoro, url,
                     session_id, inv_type));
 
-				// send notification message to the corresponding chat 
+				// send notification message to the corresponding chat
 				if (payload["notify_box_type"].asString() == "VoiceInviteGroup" || payload["notify_box_type"].asString() == "VoiceInviteAdHoc")
 				{
 					LLStringUtil::format_map_t string_args;
@@ -2581,7 +2987,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
 			data["session-id"] = session_id;
 
             LLCoreHttpUtil::HttpCoroutineAdapter::messageHttpPost(url, data,
-                "Invitation declined", 
+                "Invitation declined",
                 "Invitation decline failed.");
 		}
 	}
@@ -2646,7 +3052,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
 //		}
 //	}
 //	/* FALLTHROUGH */
-//	
+	
 //	case 1: // decline
 //	{
 //		if (type == IM_SESSION_P2P_INVITE)
@@ -2672,7 +3078,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
 //	gIMMgr->clearPendingInvitation(session_id);
 //	break;
 //	}
-//	
+	
 //	return false;
 //}
 // [/AL:SE]
@@ -2687,9 +3093,11 @@ LLIMMgr::LLIMMgr()
 	mPendingAgentListUpdates = LLSD::emptyMap();
 
 	LLIMModel::getInstance()->addNewMsgCallback(boost::bind(&LLFloaterIMSession::sRemoveTypingIndicator, _1));
+
+	gSavedPerAccountSettings.declareBOOL("FetchGroupChatHistory", TRUE, "Fetch recent messages from group chat servers when a group window opens", LLControlVariable::PERSIST_ALWAYS);
 }
 
-// Add a message to a session. 
+// Add a message to a session.
 void LLIMMgr::addMessage(
 	const LLUUID& session_id,
 	const LLUUID& target_id,
@@ -2701,8 +3109,9 @@ void LLIMMgr::addMessage(
 	U32 parent_estate_id,
 	const LLUUID& region_id,
 	const LLVector3& position,
-	bool is_region_msg,
-	const LLSD& bonus)
+    bool is_region_msg,
+    U32 timestamp,
+	const LLSD& bonus)      // May be zero
 {
 	LLUUID other_participant_id = target_id;
 
@@ -2722,7 +3131,7 @@ void LLIMMgr::addMessage(
 		name_is_setted = true;
 	}
 	bool skip_message = false;
-	bool from_linden = LLMuteList::getInstance()->isLinden(from);
+	bool from_linden = LLMuteList::isLinden(from);
     if (gSavedPerAccountSettings.getBOOL("VoiceCallsFriendsOnly") && !from_linden)
 	{
 		// Evaluate if we need to skip this message when that setting is true (default is false)
@@ -2790,6 +3199,14 @@ void LLIMMgr::addMessage(
 				return;
 			}
 
+            // Fetch group chat history, enabled by default.
+            if (gSavedPerAccountSettings.getBOOL("FetchGroupChatHistory"))
+            {
+                std::string chat_url = gAgent.getRegion()->getCapability("ChatSessionRequest");
+                LLCoros::instance().launch("chatterBoxHistoryCoro",
+                    boost::bind(&chatterBoxHistoryCoro, chat_url, session_id, from, msg, timestamp));
+            }
+
 			//Play sound for new conversations
 			if (!skip_message & !gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNewConversation") == TRUE))
 			{
@@ -2805,7 +3222,7 @@ void LLIMMgr::addMessage(
 
 	if (!LLMuteList::getInstance()->isMuted(other_participant_id, LLMute::flagTextChat) && !skip_message)
 	{
-		LLIMModel::instance().addMessage(new_session_id, from, other_participant_id, msg, true, is_region_msg, bonus);
+		LLIMModel::instance().addMessage(new_session_id, from, other_participant_id, msg, true, is_region_msg, timestamp, bonus);
 	}
 
 	// Open conversation floater if offline messages are present
@@ -2820,7 +3237,7 @@ void LLIMMgr::addMessage(
 void LLIMMgr::addSystemMessage(const LLUUID& session_id, const std::string& message_name, const LLSD& args)
 {
 	LLUIString message;
-	
+
 	// null session id means near me (chat history)
 	if (session_id.isNull())
 	{
@@ -2883,7 +3300,7 @@ void LLIMMgr::autoStartCallOnStartup(const LLUUID& session_id)
 {
 	LLIMModel::LLIMSession *session = LLIMModel::getInstance()->findIMSession(session_id);
 	if (!session) return;
-	
+
 	if (session->mSessionInitialized)
 	{
 		startCall(session_id);
@@ -2891,7 +3308,7 @@ void LLIMMgr::autoStartCallOnStartup(const LLUUID& session_id)
 	else
 	{
 		session->mStartCallOnInitialize = true;
-	}	
+	}
 }
 
 LLUUID LLIMMgr::addP2PSession(const std::string& name,
@@ -2928,7 +3345,7 @@ LLUUID LLIMMgr::addSession(
 	return session_id;
 }
 
-// Adds a session using the given session_id.  If the session already exists 
+// Adds a session using the given session_id.  If the session already exists
 // the dialog type is assumed correct. Returns the uuid of the session.
 LLUUID LLIMMgr::addSession(
 	const std::string& name,
@@ -2991,9 +3408,9 @@ LLUUID LLIMMgr::addSession(
 
 	//we don't need to show notes about online/offline, mute/unmute users' statuses for existing sessions
 	if (!new_session) return session_id;
-	
+
     LL_INFOS("IMVIEW") << "LLIMMgr::addSession, new session added, name = " << name << ", session id = " << session_id << LL_ENDL;
-    
+
 	//Per Plan's suggestion commented "explicit offline status warning" out to make Dessie happier (see EXT-3609)
 	//*TODO After February 2010 remove this commented out line if no one will be missing that warning
 	//noteOfflineUsers(session_id, floater, ids);
@@ -3064,7 +3481,7 @@ bool LLIMMgr::leaveSession(const LLUUID& session_id)
 void LLIMMgr::removeSession(const LLUUID& session_id)
 {
 	llassert_always(hasSession(session_id));
-	
+
 	clearPendingInvitation(session_id);
 	clearPendingAgentListUpdates(session_id);
 
@@ -3076,9 +3493,9 @@ void LLIMMgr::removeSession(const LLUUID& session_id)
 }
 
 void LLIMMgr::inviteToSession(
-	const LLUUID& session_id, 
-	const std::string& session_name, 
-	const LLUUID& caller_id, 
+	const LLUUID& session_id,
+	const std::string& session_name,
+	const LLUUID& caller_id,
 	const std::string& caller_name,
 	EInstantMessage type,
 	EInvitationType inv_type,
@@ -3195,22 +3612,22 @@ void LLIMMgr::inviteToSession(
 	{
 		if (caller_name.empty())
 		{
-			LLAvatarNameCache::get(caller_id, 
+			LLAvatarNameCache::get(caller_id,
 				boost::bind(&LLIMMgr::onInviteNameLookup, payload, _1, _2));
 		}
 		else
 		{
 			LLFloaterReg::showInstance("incoming_call", payload, FALSE);
 		}
-		
-		// Add the caller to the Recent List here (at this point 
+
+		// Add the caller to the Recent List here (at this point
 		// "incoming_call" floater is shown and the recipient can
 		// reject the call), because even if a recipient will reject
 		// the call, the caller should be added to the recent list
 		// anyway. STORM-507.
 		if(type == IM_SESSION_P2P_INVITE)
 			LLRecentPeople::instance().add(caller_id);
-		
+
 		mPendingInvitations[session_id.asString()] = LLSD();
 	}
 }
@@ -3431,7 +3848,7 @@ bool LLIMMgr::startCall(const LLUUID& session_id, LLVoiceChannel::EDirection dir
 {
 	LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(session_id);
 	if (!voice_channel) return false;
-	
+
 	voice_channel->setCallDirection(direction);
 	voice_channel->activate();
 	return true;
@@ -3549,7 +3966,7 @@ void LLIMMgr::noteMutedUsers(const LLUUID& session_id,
 	if(count > 0)
 	{
 		LLIMModel* im_model = LLIMModel::getInstance();
-		
+
 		for(S32 i = 0; i < count; ++i)
 		{
 			if( ml->isMuted(ids.at(i)) )
@@ -3627,7 +4044,15 @@ class LLViewerChatterBoxSessionStartReply : public LLHTTPNode
 				if ( body.has("session_info") )
 				{
 					im_floater->processSessionUpdate(body["session_info"]);
-				}
+
+                    // Send request for chat history, if enabled.
+                    if (gSavedPerAccountSettings.getBOOL("FetchGroupChatHistory"))
+                    {
+                        std::string url = gAgent.getRegion()->getCapability("ChatSessionRequest");
+                        LLCoros::instance().launch("chatterBoxHistoryCoro",
+                            boost::bind(&chatterBoxHistoryCoro, url, session_id, "", "", 0));
+                    }
+                }
 			}
 
 			gIMMgr->clearPendingAgentListUpdates(session_id);
@@ -3756,7 +4181,7 @@ class LLViewerChatterBoxInvitation : public LLHTTPNode
 			LLUUID session_id = message_params["id"].asUUID();
 			std::vector<U8> bin_bucket = message_params["data"]["binary_bucket"].asBinary();
 			U8 offline = (U8)message_params["offline"].asInteger();
-			
+
 			time_t timestamp =
 				(time_t) message_params["timestamp"].asInteger();
 
@@ -3826,7 +4251,9 @@ class LLViewerChatterBoxInvitation : public LLHTTPNode
 				IM_SESSION_INVITE,
 				message_params["parent_estate_id"].asInteger(),
 				message_params["region_id"].asUUID(),
-				ll_vector3_from_sd(message_params["position"]));
+				ll_vector3_from_sd(message_params["position"]),
+                false,      // is_region_message
+                timestamp);
 
 			if (LLMuteList::getInstance()->isMuted(from_id, name, LLMute::flagTextChat))
 			{
@@ -3852,8 +4279,8 @@ class LLViewerChatterBoxInvitation : public LLHTTPNode
 			}
 
 			gIMMgr->inviteToSession(
-				input["body"]["session_id"].asUUID(), 
-				input["body"]["session_name"].asString(), 
+				input["body"]["session_id"].asUUID(),
+				input["body"]["session_name"].asString(),
 				input["body"]["from_id"].asUUID(),
 				input["body"]["from_name"].asString(),
 				IM_SESSION_INVITE,
@@ -3862,8 +4289,8 @@ class LLViewerChatterBoxInvitation : public LLHTTPNode
 		else if ( input["body"].has("immediate") )
 		{
 			gIMMgr->inviteToSession(
-				input["body"]["session_id"].asUUID(), 
-				input["body"]["session_name"].asString(), 
+				input["body"]["session_id"].asUUID(),
+				input["body"]["session_name"].asString(),
 				input["body"]["from_id"].asUUID(),
 				input["body"]["from_name"].asString(),
 				IM_SESSION_INVITE,
diff --git a/indra/newview/llimview.h b/indra/newview/llimview.h
index 20b30ce57edc8916f47e375fbc6a39a6ac5bb302..531c4fc9a378683d07753cb89dba5f2d8b0da28b 100644
--- a/indra/newview/llimview.h
+++ b/indra/newview/llimview.h
@@ -43,6 +43,7 @@ class LLAvatarName;
 class LLFriendObserver;
 class LLCallDialogManager;	
 class LLIMSpeakerMgr;
+
 /**
  * Timeout Timer for outgoing Ad-Hoc/Group IM sessions which being initialized by the server
  */
@@ -64,11 +65,14 @@ class LLSessionTimeoutTimer : public LLEventTimer
 class LLIMModel final :  public LLSingleton<LLIMModel>
 {
 	LLSINGLETON(LLIMModel);
+
 public:
 
-	struct LLIMSession : public boost::signals2::trackable
+    typedef std::list<LLSD> chat_message_list_t;
+
+    struct LLIMSession : public boost::signals2::trackable
 	{
-		typedef enum e_session_type
+        typedef enum e_session_type
 		{   // for now we have 4 predefined types for a session
 			P2P_SESSION,
 			GROUP_SESSION,
@@ -85,15 +89,24 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 		};
 // [/SL:KB]
 
-		LLIMSession(const LLUUID& session_id, const std::string& name, 
+		LLIMSession(const LLUUID& session_id, const std::string& name,
 			const EInstantMessage& type, const LLUUID& other_participant_id, const uuid_vec_t& ids, bool voice, bool has_offline_msg);
 		virtual ~LLIMSession();
 
 		void sessionInitReplyReceived(const LLUUID& new_session_id);
-		void addMessagesFromHistory(const std::list<LLSD>& history);
-		void addMessage(const std::string& from, const LLUUID& from_id, const std::string& utf8_text, const std::string& time, const bool is_history = false, bool is_region_msg = false, const LLSD& bonus = LLSD());
-		void onVoiceChannelStateChanged(const LLVoiceChannel::EState& old_state, const LLVoiceChannel::EState& new_state, const LLVoiceChannel::EDirection& direction);
-		
+		void addMessagesFromHistoryCache(const std::list<LLSD>& history);        // From local file
+        void addMessagesFromServerHistory(const LLSD& history, const std::string& target_from, const std::string& target_message, U32 timestamp);  // From chat server
+		void addMessage(const std::string& from,
+                        const LLUUID& from_id,
+                        const std::string& utf8_text,
+                        const std::string& time,
+                        const bool is_history,
+                        const bool is_region_msg,
+                        U32 timestamp,
+						const LLSD& bonus);
+
+        void onVoiceChannelStateChanged(const LLVoiceChannel::EState& old_state, const LLVoiceChannel::EState& new_state, const LLVoiceChannel::EDirection& direction);
+
 		/** @deprecated */
 		static void chatFromLogFile(LLLogChat::ELogLineType type, const LLSD& msg, void* userdata);
 
@@ -126,6 +139,10 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 		uuid_vec_t mInitialTargetIDs;
 		std::string mHistoryFileName;
 
+        // Saved messages from the last minute of history read from the local group chat cache file
+        std::string mLastHistoryCacheDateTime;
+        chat_message_list_t mLastHistoryCacheMsgs;
+
 		// connection to voice channel state change signal
 		boost::signals2::connection mVoiceChannelStateChangeConnection;
 
@@ -139,7 +156,7 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 		// does include all incoming messages
 		S32 mNumUnread;
 
-		std::list<LLSD> mMsgs;
+        chat_message_list_t mMsgs;
 
 		LLVoiceChannel* mVoiceChannel;
 		LLIMSpeakerMgr* mSpeakers;
@@ -226,29 +243,45 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 	 * and also saved into a file if log2file is specified.
 	 * It sends new message signal for each added message.
 	 */
-	bool addMessage(const LLUUID& session_id, const std::string& from, const LLUUID& other_participant_id, const std::string& utf8_text, bool log2file = true, bool is_region_msg = false, const LLSD& bonus = LLSD());
+	void addMessage(const LLUUID& session_id,
+                    const std::string& from,
+                    const LLUUID& other_participant_id,
+                    const std::string& utf8_text,
+                    bool log2file = true,
+                    bool is_region_msg = false,
+                    U32 time_stamp = 0,
+					const LLSD& bonus = LLSD());
+
+    void processAddingMessage(const LLUUID& session_id,
+                    const std::string& from,
+                    const LLUUID& from_id,
+                    const std::string& utf8_text,
+                    bool log2file,
+                    bool is_region_msg,
+                    U32 time_stamp,
+					const LLSD& bonus);
 
 	/**
 	 * Similar to addMessage(...) above but won't send a signal about a new message added
 	 */
-	LLIMModel::LLIMSession* addMessageSilently(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, 
-		const std::string& utf8_text, bool log2file = true, bool is_region_msg = false, const LLSD& bonus = LLSD());
+	LLIMModel::LLIMSession* addMessageSilently(const LLUUID& session_id, const std::string& from, const LLUUID& from_id,
+		const std::string& utf8_text, bool log2file = true, bool is_region_msg = false, U32 timestamp = 0, const LLSD& bonus = LLSD());
 
 	/**
 	 * Add a system message to an IM Model
 	 */
-	bool proccessOnlineOfflineNotification(const LLUUID& session_id, const std::string& utf8_text);
+	void proccessOnlineOfflineNotification(const LLUUID& session_id, const std::string& utf8_text);
 
 	/**
-	 * Get a session's name. 
-	 * For a P2P chat - it's an avatar's name, 
+	 * Get a session's name.
+	 * For a P2P chat - it's an avatar's name,
 	 * For a group chat - it's a group's name
 	 * For an incoming ad-hoc chat - is received from the server and is in a from of "<Avatar's name> Conference"
 	 *	It is updated in LLIMModel::LLIMSession's constructor to localize the "Conference".
 	 */
 	const std::string getName(const LLUUID& session_id) const;
 
-	/** 
+	/**
 	 * Get number of unread messages in a session with session_id
 	 * Returns -1 if the session with session_id doesn't exist
 	 */
@@ -300,7 +333,7 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 	bool logToFile(const std::string& file_name, const std::string& from, const LLUUID& from_id, const std::string& utf8_text);
 
 private:
-	
+
 	/**
 	 * Populate supplied std::list with messages starting from index specified by start_index without
 	 * emitting no unread messages signal.
@@ -310,7 +343,7 @@ class LLIMModel final :  public LLSingleton<LLIMModel>
 	/**
 	 * Add message to a list of message associated with session specified by session_id
 	 */
-	bool addToHistory(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, const std::string& utf8_text, bool is_region_msg = false, const LLSD& bonus = LLSD());
+	bool addToHistory(const LLUUID& session_id, const std::string& from, const LLUUID& from_id, const std::string& utf8_text, bool is_region_msg, U32 timestamp, const LLSD& bonus);
 
 };
 
@@ -352,7 +385,8 @@ class LLIMMgr final : public LLSingleton<LLIMMgr>
 					U32 parent_estate_id = 0,
 					const LLUUID& region_id = LLUUID::null,
 					const LLVector3& position = LLVector3::zero,
-					bool is_region_msg = false,
+                    bool is_region_msg = false,
+                    U32 timestamp = 0,
 					const LLSD& bonus = LLSD());
 
 	void addSystemMessage(const LLUUID& session_id, const std::string& message_name, const LLSD& args);
diff --git a/indra/newview/llinventoryfunctions.cpp b/indra/newview/llinventoryfunctions.cpp
index 7dc41850a1b79013625a1d10322429a8589ae64b..0c0d9c2fcc5b5b5554fae234c5cd46f5901a9a2a 100644
--- a/indra/newview/llinventoryfunctions.cpp
+++ b/indra/newview/llinventoryfunctions.cpp
@@ -537,7 +537,11 @@ BOOL get_is_item_worn(const LLUUID& id)
 	const LLViewerInventoryItem* item = gInventory.getItem(id);
 	if (!item)
 		return FALSE;
-
+    
+    if (item->getIsLinkType() && !gInventory.getItem(item->getLinkedUUID()))
+    {
+        return FALSE;
+    }
 	// Consider the item as worn if it has links in COF.
 // [SL:KB] - The code below causes problems across the board so it really just needs to go
 //	if (LLAppearanceMgr::instance().isLinkedInCOF(id))
@@ -858,7 +862,7 @@ void show_item_original(const LLUUID& item_uuid)
         LLPanelMainInventory* main_inventory = sidepanel_inventory->getMainInventoryPanel();
         if (main_inventory)
         {
-            main_inventory->resetFilters();
+            main_inventory->resetAllItemsFilters();
         }
         reset_inventory_filter();
 
@@ -866,6 +870,7 @@ void show_item_original(const LLUUID& item_uuid)
         {
             LLFloaterReg::toggleInstanceOrBringToFront("inventory");
         }
+        sidepanel_inventory->showInventoryPanel();
 
         const LLUUID inbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_INBOX);
         if (gInventory.isObjectDescendentOf(gInventory.getLinkedItemID(item_uuid), inbox_id))
@@ -2721,7 +2726,12 @@ void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root
     }
     else
     {
-        std::copy(selected_uuid_set.begin(), selected_uuid_set.end(), std::back_inserter(ids));
+        for (std::set<LLFolderViewItem*>::iterator it = selected_items.begin(), end_it = selected_items.end();
+            it != end_it;
+            ++it)
+        {
+            ids.push_back(static_cast<LLFolderViewModelItemInventory*>((*it)->getViewModelItem())->getUUID());
+        }
     }
 
     // Check for actions that get handled in bulk
@@ -2782,7 +2792,7 @@ void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root
     }
     else if ("ungroup_folder_items" == action)
     {
-        if (selected_uuid_set.size() == 1)
+        if (ids.size() == 1)
         {
             LLInventoryCategory* inv_cat = gInventory.getCategory(*ids.begin());
             if (!inv_cat || LLFolderType::lookupIsProtectedType(inv_cat->getPreferredType()))
diff --git a/indra/newview/llinventorymodel.cpp b/indra/newview/llinventorymodel.cpp
index 79603f75d4166c43a98390a123aee87dcdd14bf6..5d664fa1a64faf1a07dfa1e8875cf4026212aa5a 100644
--- a/indra/newview/llinventorymodel.cpp
+++ b/indra/newview/llinventorymodel.cpp
@@ -1781,6 +1781,9 @@ void LLInventoryModel::deleteObject(const LLUUID& id, bool fix_broken_links, boo
 		LL_WARNS(LOG_INV) << "Deleting non-existent object [ id: " << id << " ] " << LL_ENDL;
 		return;
 	}
+
+    //collect the links before removing the item from mItemMap
+    LLInventoryModel::item_array_t links = collectLinksTo(id);
 	
 	LL_DEBUGS(LOG_INV) << "Deleting inventory object " << id << LL_ENDL;
 	mLastItem = NULL;
@@ -1838,7 +1841,7 @@ void LLInventoryModel::deleteObject(const LLUUID& id, bool fix_broken_links, boo
 	// update is getting broken link info separately.
 	if (fix_broken_links && !is_link_type)
 	{
-		updateLinkedObjectsFromPurge(id);
+        rebuildLinkItems(links);
 	}
 	obj = nullptr; // delete obj
 	if (do_notify_observers)
@@ -1847,26 +1850,25 @@ void LLInventoryModel::deleteObject(const LLUUID& id, bool fix_broken_links, boo
 	}
 }
 
-void LLInventoryModel::updateLinkedObjectsFromPurge(const LLUUID &baseobj_id)
+void LLInventoryModel::rebuildLinkItems(LLInventoryModel::item_array_t& items)
 {
-	LLInventoryModel::item_array_t item_array = collectLinksTo(baseobj_id);
-
-	// REBUILD is expensive, so clear the current change list first else
-	// everything else on the changelist will also get rebuilt.
-	if (item_array.size() > 0)
-	{
-		notifyObservers();
-		for (LLInventoryModel::item_array_t::const_iterator iter = item_array.begin();
-			iter != item_array.end();
-			iter++)
-		{
-			const LLViewerInventoryItem *linked_item = (*iter);
-			const LLUUID &item_id = linked_item->getUUID();
-			if (item_id == baseobj_id) continue;
-			addChangedMask(LLInventoryObserver::REBUILD, item_id);
-		}
-		notifyObservers();
-	}
+    // REBUILD is expensive, so clear the current change list first else
+    // everything else on the changelist will also get rebuilt.
+    if (items.size() > 0)
+    {
+        notifyObservers();
+        for (LLInventoryModel::item_array_t::const_iterator iter = items.begin();
+            iter != items.end();
+            iter++)
+        {
+            const LLViewerInventoryItem *linked_item = (*iter);
+            if (linked_item)
+            {
+                addChangedMask(LLInventoryObserver::REBUILD, linked_item->getUUID());
+            }
+        }
+        notifyObservers();
+    }
 }
 
 // Add/remove an observer. If the observer is destroyed, be sure to
@@ -2105,18 +2107,20 @@ void LLInventoryModel::cache(
 		items,
 		INCLUDE_TRASH,
 		can_cache);
-	std::string inventory_filename = getInvCacheAddres(agent_id);
-	saveToFile(inventory_filename, categories, items);
-	std::string gzip_filename(inventory_filename);
+    // Use temporary file to avoid potential conflicts with other
+    // instances (even a 'read only' instance unzips into a file)
+    std::string temp_file = gDirUtilp->getTempFilename();
+	saveToFile(temp_file, categories, items);
+    std::string gzip_filename = getInvCacheAddres(agent_id);
 	gzip_filename.append(".gz");
-	if(gzip_file(inventory_filename, gzip_filename))
+	if(gzip_file(temp_file, gzip_filename))
 	{
-		LL_DEBUGS(LOG_INV) << "Successfully compressed " << inventory_filename << LL_ENDL;
-		LLFile::remove(inventory_filename);
+		LL_DEBUGS(LOG_INV) << "Successfully compressed " << temp_file << " to " << gzip_filename << LL_ENDL;
+		LLFile::remove(temp_file);
 	}
 	else
 	{
-		LL_WARNS(LOG_INV) << "Unable to compress " << inventory_filename << LL_ENDL;
+		LL_WARNS(LOG_INV) << "Unable to compress " << temp_file << " into " << gzip_filename << LL_ENDL;
 	}
 }
 
@@ -3197,6 +3201,7 @@ bool LLInventoryModel::saveToFile(const std::string& filename,
                 return false;
             }
         }
+        fileXML.flush();
 
         fileXML.close();
 
@@ -4877,7 +4882,6 @@ void LLInventoryModel::FetchItemHttpHandler::processData(LLSD & content, LLCore:
 	{
 		gInventory.updateItem(*it);
 	}
-	
 	gInventory.notifyObservers();
 	gViewerWindow->getWindow()->decBusyCount();
 }
diff --git a/indra/newview/llinventorymodel.h b/indra/newview/llinventorymodel.h
index eb6480938997bee6f44039955543ccf5daacb1a7..aa7e946e9dbad0bf1c05bb9987512596a955bbd2 100644
--- a/indra/newview/llinventorymodel.h
+++ b/indra/newview/llinventorymodel.h
@@ -465,7 +465,7 @@ class LLInventoryModel
 	void checkTrashOverflow();
 
 protected:
-	void updateLinkedObjectsFromPurge(const LLUUID& baseobj_id);
+    void rebuildLinkItems(LLInventoryModel::item_array_t& items);
 	
 	//--------------------------------------------------------------------
 	// Reorder
diff --git a/indra/newview/llinventorymodelbackgroundfetch.cpp b/indra/newview/llinventorymodelbackgroundfetch.cpp
index a2c15077b7587c6cb3b25429a0641d0c67af0649..c9b4cbfa743461c38ad6abe797526a13188b89c3 100644
--- a/indra/newview/llinventorymodelbackgroundfetch.cpp
+++ b/indra/newview/llinventorymodelbackgroundfetch.cpp
@@ -526,7 +526,7 @@ void LLInventoryModelBackgroundFetch::bulkFetch()
 	//If there are items in mFetchQueue, we want to check the time since the last bulkFetch was 
 	//sent.  If it exceeds our retry time, go ahead and fire off another batch.  
 	LLViewerRegion * region(gAgent.getRegion());
-	if (! region || gDisconnected)
+	if (! region || gDisconnected || LLApp::isExiting())
 	{
 		return;
 	}
diff --git a/indra/newview/llinventorypanel.cpp b/indra/newview/llinventorypanel.cpp
index c64c50e3f00eb161d8c973d09b89e528e5a13726..b79a0f209804670067abf1fc76a90136afb4df37 100644
--- a/indra/newview/llinventorypanel.cpp
+++ b/indra/newview/llinventorypanel.cpp
@@ -1667,6 +1667,7 @@ void LLInventoryPanel::purgeSelectedItems()
     if (inventory_selected.empty()) return;
     LLSD args;
     S32 count = inventory_selected.size();
+    std::vector<LLUUID> selected_items;
     for (std::set<LLFolderViewItem*>::const_iterator it = inventory_selected.begin(), end_it = inventory_selected.end();
         it != end_it;
         ++it)
@@ -1676,27 +1677,23 @@ void LLInventoryPanel::purgeSelectedItems()
         LLInventoryModel::item_array_t items;
         gInventory.collectDescendents(item_id, cats, items, LLInventoryModel::INCLUDE_TRASH);
         count += items.size() + cats.size();
+        selected_items.push_back(item_id);
     }
     args["COUNT"] = count;
-    LLNotificationsUtil::add("PurgeSelectedItems", args, LLSD(), boost::bind(&LLInventoryPanel::callbackPurgeSelectedItems, this, _1, _2));
+    LLNotificationsUtil::add("PurgeSelectedItems", args, LLSD(), boost::bind(callbackPurgeSelectedItems, _1, _2, selected_items));
 }
 
-void LLInventoryPanel::callbackPurgeSelectedItems(const LLSD& notification, const LLSD& response)
+// static
+void LLInventoryPanel::callbackPurgeSelectedItems(const LLSD& notification, const LLSD& response, const std::vector<LLUUID> inventory_selected)
 {
-    if (!mFolderRoot.get()) return;
-
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option == 0)
     {
-        const std::set<LLFolderViewItem*> inventory_selected = mFolderRoot.get()->getSelectionList();
         if (inventory_selected.empty()) return;
 
-        std::set<LLFolderViewItem*>::const_iterator it = inventory_selected.begin();
-        const std::set<LLFolderViewItem*>::const_iterator it_end = inventory_selected.end();
-        for (; it != it_end; ++it)
+        for (auto it : inventory_selected)
         {
-            LLUUID item_id = static_cast<LLFolderViewModelItemInventory*>((*it)->getViewModelItem())->getUUID();
-            remove_inventory_object(item_id, NULL);
+            remove_inventory_object(it, NULL);
         }
     }
 }
diff --git a/indra/newview/llinventorypanel.h b/indra/newview/llinventorypanel.h
index b45f0a3f10086096165801d2ea219cfb2f3a43ef..8fd9761c52626bd6db98bcd8c1a277795895d023 100644
--- a/indra/newview/llinventorypanel.h
+++ b/indra/newview/llinventorypanel.h
@@ -262,7 +262,7 @@ class LLInventoryPanel : public LLPanel
     // Clean up stuff when the folder root gets deleted
     void clearFolderRoot();
 
-    void callbackPurgeSelectedItems(const LLSD& notification, const LLSD& response);
+    static void callbackPurgeSelectedItems(const LLSD& notification, const LLSD& response, const std::vector<LLUUID> inventory_selected);
 
 protected:
 	void openStartFolderOrMyInventory(); // open the first level of inventory
diff --git a/indra/newview/lllegacyatmospherics.cpp b/indra/newview/lllegacyatmospherics.cpp
index f2bb983bc43668d71af5dc2f809a62f689b14d5f..b3be4eb70d5668954df295688cc5d6991535eb0b 100644
--- a/indra/newview/lllegacyatmospherics.cpp
+++ b/indra/newview/lllegacyatmospherics.cpp
@@ -483,7 +483,6 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 	{
         const LLSettingsWater::ptr_t& pwater = env.getCurrentWater();
 		F32 depth = water_height - camera_height;
-
 		LLColor4 water_fog_color(pwater->getWaterFogColor());
 
 		// adjust the color based on depth.  We're doing linear approximations
diff --git a/indra/newview/lllogchat.cpp b/indra/newview/lllogchat.cpp
index 20b76db862246c4f929aa493e6489a2645d9fe53..c90ce91fde1f73965b7c17adf415e11358767544 100644
--- a/indra/newview/lllogchat.cpp
+++ b/indra/newview/lllogchat.cpp
@@ -48,6 +48,7 @@
 const S32 LOG_RECALL_SIZE = 2048;
 
 const std::string LL_IM_TIME("time");
+const std::string LL_IM_DATE_TIME("datetime");
 const std::string LL_IM_TEXT("message");
 const std::string LL_IM_FROM("from");
 const std::string LL_IM_FROM_ID("from_id");
@@ -119,14 +120,14 @@ void append_to_last_message(std::list<LLSD>& messages, const std::string& line)
 	messages.back()[LL_IM_TEXT] = im_text;
 }
 
-std::string remove_utf8_bom(const char* buf)
+const char* remove_utf8_bom(const char* buf)
 {
-	std::string res(buf);
-	if (res[0] == (char)0xEF && res[1] == (char)0xBB && res[2] == (char)0xBF)
-	{
-		res.erase(0, 3);
+    const char* start = buf;
+	if (start[0] == (char)0xEF && start[1] == (char)0xBB && start[2] == (char)0xBF)
+	{   // If string starts with the magic bytes, return pointer after it.
+        start += 3;
 	}
-	return res;
+	return start;
 }
 
 class LLLogChatTimeScanner final : public LLSingleton<LLLogChatTimeScanner>
@@ -297,7 +298,7 @@ std::string LLLogChat::cleanFileName(std::string filename)
 	return filename;
 }
 
-std::string LLLogChat::timestamp(bool withdate)
+std::string LLLogChat::timestamp2LogString(U32 timestamp, bool withdate)
 {
 	std::string timeStr;
 	if (withdate)
@@ -316,7 +317,14 @@ std::string LLLogChat::timestamp(bool withdate)
 	}
 
 	LLSD substitution;
-	substitution["datetime"] = (S32)time_corrected();
+    if (timestamp == 0)
+    {
+        substitution["datetime"] = (S32)time_corrected();
+    }
+    else
+    {   // timestamp is correct utc already
+        substitution["datetime"] = (S32)timestamp;
+    }
 
 	LLStringUtil::format (timeStr, substitution);
 	return timeStr;
@@ -338,7 +346,7 @@ void LLLogChat::saveHistory(const std::string& filename,
 		llassert(tmp_filename.size());
 		return;
 	}
-	
+
 	llofstream file(LLLogChat::makeLogFileName(filename).c_str(), std::ios_base::app);
 	if (!file.is_open())
 	{
@@ -349,7 +357,7 @@ void LLLogChat::saveHistory(const std::string& filename,
 	LLSD item;
 
 	if (gSavedPerAccountSettings.getBOOL("LogTimestamp"))
-		 item["time"] = LLLogChat::timestamp(gSavedPerAccountSettings.getBOOL("LogTimestampDate"));
+		 item["time"] = LLLogChat::timestamp2LogString(0, gSavedPerAccountSettings.getBOOL("LogTimestampDate"));
 
 	item["from_id"]	= from_id;
 	item["message"]	= line;
@@ -357,7 +365,7 @@ void LLLogChat::saveHistory(const std::string& filename,
 	//adding "Second Life:" for all system messages to make chat log history parsing more reliable
 	if (from.empty() && from_id.isNull())
 	{
-		item["from"] = SYSTEM_FROM; 
+		item["from"] = SYSTEM_FROM;
 	}
 	else
 	{
@@ -376,37 +384,60 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
 {
 	if (file_name.empty())
 	{
-		LL_WARNS("LLLogChat::loadChatHistory") << "Session name is Empty!" << LL_ENDL;
+		LL_WARNS("LLLogChat::loadChatHistory") << "Local history file name is empty!" << LL_ENDL;
 		return ;
 	}
 
 	bool load_all_history = load_params.has("load_all_history") ? load_params["load_all_history"].asBoolean() : false;
 
-	LLFILE* fptr = LLFile::fopen(LLLogChat::makeLogFileName(file_name), "r");/*Flawfinder: ignore*/
+    // Stat the file to find it and get the last history entry time
+    llstat stat_data;
+
+    std::string log_file_name = LLLogChat::makeLogFileName(file_name);
+    LL_DEBUGS("ChatHistory") << "First attempt to stat chat history file " << log_file_name << LL_ENDL;
+
+    S32 no_stat = LLFile::stat(log_file_name, &stat_data);
+
+    if (no_stat)
+    {
+        if (is_group)
+        {
+            std::string old_name(file_name);
+            old_name.erase(old_name.size() - GROUP_CHAT_SUFFIX.size());     // trim off " (group)"
+            log_file_name = LLLogChat::makeLogFileName(old_name);
+            LL_DEBUGS("ChatHistory") << "Attempting to stat adjusted chat history file " << log_file_name << LL_ENDL;
+            no_stat = LLFile::stat(log_file_name, &stat_data);
+            if (!no_stat)
+            {   // Found it without "(group)", copy to new naming style.  We already have the mod time in stat_data
+                log_file_name = LLLogChat::makeLogFileName(file_name);
+                LL_DEBUGS("ChatHistory") << "Attempt to stat copied history file " << log_file_name << LL_ENDL;
+                LLFile::copy(LLLogChat::makeLogFileName(old_name), log_file_name);
+            }
+        }
+        if (no_stat)
+        {
+            log_file_name = LLLogChat::oldLogFileName(file_name);
+            LL_DEBUGS("ChatHistory") << "Attempt to stat old history file name " << log_file_name << LL_ENDL;
+            no_stat = LLFile::stat(log_file_name, &stat_data);
+            if (no_stat)
+            {
+                LL_DEBUGS("ChatHistory") << "No previous conversation log file found for " << file_name << LL_ENDL;
+                return;						//No previous conversation with this name.
+            }
+        }
+    }
+
+    // If we got here, we managed to stat the file.
+    // Open the file to read
+    LLFILE* fptr = LLFile::fopen(log_file_name, "r");       /*Flawfinder: ignore*/
 	if (!fptr)
-	{
-		if (is_group)
-		{
-			std::string old_name(file_name);
-			old_name.erase(old_name.size() - GROUP_CHAT_SUFFIX.size());
-			fptr = LLFile::fopen(LLLogChat::makeLogFileName(old_name), "r");
-			if (fptr)
-			{
-				fclose(fptr);
-				LLFile::copy(LLLogChat::makeLogFileName(old_name), LLLogChat::makeLogFileName(file_name));
-			}
-			fptr = LLFile::fopen(LLLogChat::makeLogFileName(file_name), "r");
-		}
-		if (!fptr)
-		{
-			fptr = LLFile::fopen(LLLogChat::oldLogFileName(file_name), "r");/*Flawfinder: ignore*/
-			if (!fptr)
-			{
-				return;						//No previous conversation with this name.
-			}
-		}
+	{   // Ok, this is strange but not really tragic in the big picture of things
+        LL_WARNS("ChatHistory") << "Unable to read file " << log_file_name << " after stat was successful" << LL_ENDL;
+        return;
 	}
 
+    S32 save_num_messages = messages.size();
+
 	char buffer[LOG_RECALL_SIZE];		/*Flawfinder: ignore*/
 	char *bptr;
 	S32 len;
@@ -424,6 +455,7 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
 	while (fgets(buffer, LOG_RECALL_SIZE, fptr)  && !feof(fptr))
 	{
 		len = strlen(buffer) - 1;		/*Flawfinder: ignore*/
+        // backfill any end of line characters with nulls
 		for (bptr = (buffer + len); (*bptr == '\n' || *bptr == '\r') && bptr>buffer; bptr--)	*bptr='\0';
 
 		if (firstline)
@@ -456,6 +488,10 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
 		}
 	}
 	fclose(fptr);
+
+    LL_DEBUGS("ChatHistory") << "Read " << (messages.size() - save_num_messages)
+        << " messages of chat history from " << log_file_name
+        << " file mod time " << (F64)stat_data.st_mtime << LL_ENDL;
 }
 
 bool LLLogChat::historyThreadsFinished(LLUUID session_id)
@@ -820,7 +856,8 @@ bool LLLogChat::isTranscriptFileFound(std::string fullname)
 		{
 			//matching a timestamp
 			boost::match_results<std::string::const_iterator> matches;
-			if (ll_regex_match(remove_utf8_bom(buffer), matches, TIMESTAMP))
+            std::string line(remove_utf8_bom(buffer));
+			if (ll_regex_match(line, matches, TIMESTAMP))
 			{
 				result = true;
 			}
@@ -830,7 +867,7 @@ bool LLLogChat::isTranscriptFileFound(std::string fullname)
 	return result;
 }
 
-//*TODO mark object's names in a special way so that they will be distinguishable form avatar name 
+//*TODO mark object's names in a special way so that they will be distinguishable form avatar name
 //which are more strict by its nature (only firstname and secondname)
 //Example, an object's name can be written like "Object <actual_object's_name>"
 void LLChatLogFormatter::format(const LLSD& im, std::ostream& ostr) const
@@ -848,7 +885,7 @@ void LLChatLogFormatter::format(const LLSD& im, std::ostream& ostr) const
 		ostr << '[' << timestamp << ']' << TWO_SPACES;
 	}
 	
-	//*TODO mark object's names in a special way so that they will be distinguishable form avatar name 
+	//*TODO mark object's names in a special way so that they will be distinguishable from avatar name 
 	//which are more strict by its nature (only firstname and secondname)
 	//Example, an object's name can be written like "Object <actual_object's_name>"
 	if (im[LL_IM_FROM].isDefined())
@@ -911,7 +948,9 @@ bool LLChatLogParser::parse(std::string& raw, LLSD& im, const LLSD& parse_params
 		timestamp.erase(0, 1);
 		timestamp.erase(timestamp.length()-1, 1);
 
-		if (cut_off_todays_date)
+        im[LL_IM_DATE_TIME] = timestamp;    // Retain full date-time for merging chat histories
+
+        if (cut_off_todays_date)
 		{
 			LLLogChatTimeScanner::instance().checkAndCutOffDate(timestamp);
 		}
@@ -919,9 +958,9 @@ bool LLChatLogParser::parse(std::string& raw, LLSD& im, const LLSD& parse_params
 		im[LL_IM_TIME] = timestamp;
 	}
 	else
-	{
-		//timestamp is optional
-		im[LL_IM_TIME] = "";
+	{   //timestamp is optional
+        im[LL_IM_DATE_TIME] = "";
+        im[LL_IM_TIME] = "";
 	}
 
 	bool has_stuff = matches[IDX_STUFF].matched;
diff --git a/indra/newview/lllogchat.h b/indra/newview/lllogchat.h
index 496ed570815dfdd75035900accbb71f16e65d94e..802034ac8556338c304bd050e1e539cc84f6057a 100644
--- a/indra/newview/lllogchat.h
+++ b/indra/newview/lllogchat.h
@@ -92,7 +92,7 @@ class LLLogChat final : public LLSingleton<LLLogChat>
 		LOG_END
 	};
 
-	static std::string timestamp(bool withdate = false);
+	static std::string timestamp2LogString(U32 timestamp, bool withdate);
 	static std::string makeLogFileName(std::string(filename));
 	static void renameLogFile(const std::string& old_filename, const std::string& new_filename);
 	/**
@@ -201,6 +201,7 @@ extern const std::string GROUP_CHAT_SUFFIX;
 
 // LLSD map lookup constants
 extern const std::string LL_IM_TIME; //("time");
+extern const std::string LL_IM_DATE_TIME; //("datetime");
 extern const std::string LL_IM_TEXT; //("message");
 extern const std::string LL_IM_FROM; //("from");
 extern const std::string LL_IM_FROM_ID; //("from_id");
diff --git a/indra/newview/llmutelist.cpp b/indra/newview/llmutelist.cpp
index d0d0554dd22f7df362fbe0628e1944e723bae90b..d3f30b86253db3be5b928f8ebe57246127240804 100644
--- a/indra/newview/llmutelist.cpp
+++ b/indra/newview/llmutelist.cpp
@@ -196,7 +196,7 @@ void LLMuteList::cleanupSingleton()
 }
 
 // static
-BOOL LLMuteList::isLinden(const LLUUID& id)
+bool LLMuteList::isLinden(const LLUUID& id)
 {
 	std::string name;
 	gCacheName->getFullName(id, name);
@@ -204,7 +204,7 @@ BOOL LLMuteList::isLinden(const LLUUID& id)
 }
 
 // static
-BOOL LLMuteList::isLinden(const std::string& name)
+bool LLMuteList::isLinden(const std::string& name)
 {
 	std::string username = boost::replace_all_copy(name, ".", " ");
 	typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
@@ -212,9 +212,9 @@ BOOL LLMuteList::isLinden(const std::string& name)
 	tokenizer tokens(username, sep);
 	tokenizer::iterator token_iter = tokens.begin();
 	
-	if (token_iter == tokens.end()) return FALSE;
-	++token_iter;
-	if (token_iter == tokens.end()) return FALSE;
+	if (token_iter == tokens.end()) return false;
+	token_iter++;
+	if (token_iter == tokens.end()) return false;
 	
 	std::string last_name = *token_iter;
 	if (LLGridManager::getInstance()->isInSecondlife())
@@ -225,13 +225,13 @@ BOOL LLMuteList::isLinden(const std::string& name)
 	else if (LLGridManager::getInstance()->isInOpenSim())
 	{
 		LLViewerRegion* region = gAgent.getRegion();
-		if (!region) return FALSE;
+		if (!region) return false;
 		const auto& gods = region->getGods();
-		if (gods.empty()) return FALSE;
+		if (gods.empty()) return false;
 		
 		return (gods.find(name) != gods.cend() || gods.find(last_name) != gods.cend());
 	}
-	return FALSE;
+	return false;
 }
 
 static LLVOAvatar* find_avatar(const LLUUID& id)
diff --git a/indra/newview/llmutelist.h b/indra/newview/llmutelist.h
index 34ae0201b5d1f34bf91e1e501b462ec3d6677f6b..115f773c52845267c381c3300b24fd20579c8500 100644
--- a/indra/newview/llmutelist.h
+++ b/indra/newview/llmutelist.h
@@ -104,8 +104,8 @@ class LLMuteList final : public LLSingleton<LLMuteList>
 	// Alternate (convenience) form for places we don't need to pass the name, but do need flags
 	BOOL isMuted(const LLUUID& id, U32 flags) const { return isMuted(id, LLStringUtil::null, flags); };
 	
-	static BOOL isLinden(const LLUUID& id);
-	static BOOL isLinden(const std::string& name);
+	static bool isLinden(const LLUUID& id);
+	static bool isLinden(const std::string& name);
 	
 	BOOL isLoaded() const { return mIsLoaded; }
 
diff --git a/indra/newview/llnotificationhandlerutil.cpp b/indra/newview/llnotificationhandlerutil.cpp
index cb3086ee702af589fc8947d7202b50c93f7ed18f..a35082f7eb48be336ab509f92cc5c64a3c803c06 100644
--- a/indra/newview/llnotificationhandlerutil.cpp
+++ b/indra/newview/llnotificationhandlerutil.cpp
@@ -275,7 +275,7 @@ void LLHandlerUtil::addNotifPanelToIM(const LLNotificationPtr& notification)
 	LLSD offer;
 	offer["notification_id"] = notification->getID();
 	offer["from"] = SYSTEM_FROM;
-	offer["time"] = LLLogChat::timestamp(false);
+	offer["time"] = LLLogChat::timestamp2LogString(0, false);   // Use current time
 	offer["index"] = (LLSD::Integer)session->mMsgs.size();
 	session->mMsgs.push_front(offer);
 
diff --git a/indra/newview/llpanellogin.cpp b/indra/newview/llpanellogin.cpp
index 5ec51c6cc30aadd3d523ac78ed45f9c3212ee937..3b62137c7529ee4cff7c6644ce9779e361dc9682 100644
--- a/indra/newview/llpanellogin.cpp
+++ b/indra/newview/llpanellogin.cpp
@@ -1092,6 +1092,18 @@ void LLPanelLogin::onRememberPasswordCheck(void*)
     if (sInstance)
     {
         gSavedSettings.setBOOL("UpdateRememberPasswordSetting", TRUE);
+
+        LLPointer<LLCredential> cred;
+        bool remember_user, remember_password;
+        getFields(cred, remember_user, remember_password);
+
+        std::string grid(LLGridManager::getInstance()->getGridId());
+        std::string user_id(cred->userID());
+        if (!remember_password)
+        {
+            gSecAPIHandler->removeFromProtectedMap("mfa_hash", grid, user_id);
+            gSecAPIHandler->syncProtectedMap();
+        }
     }
 }
 
diff --git a/indra/newview/llpanelmaininventory.cpp b/indra/newview/llpanelmaininventory.cpp
index cfd451908b28e2b35328ff2172e4fc3d284017a5..be669c0c685693fce74f5eaa5eff80e010292a54 100644
--- a/indra/newview/llpanelmaininventory.cpp
+++ b/indra/newview/llpanelmaininventory.cpp
@@ -416,6 +416,18 @@ void LLPanelMainInventory::resetFilters()
 	setFilterTextFromFilter();
 }
 
+void LLPanelMainInventory::resetAllItemsFilters()
+{
+    LLFloaterInventoryFinder *finder = getFinder();
+    getAllItemsPanel()->getFilter().resetDefault();
+    if (finder)
+    {
+        finder->updateElementsFromFilter();
+    }
+
+    setFilterTextFromFilter();
+}
+
 void LLPanelMainInventory::setSortBy(const LLSD& userdata)
 {
 	U32 sort_order_mask = getActivePanel()->getSortOrder();
diff --git a/indra/newview/llpanelmaininventory.h b/indra/newview/llpanelmaininventory.h
index 473a5fcd11f1eca3a9b172404f56b3f93f7d39ac..1e9a7941fa434f202299c4853416bfe229164aaa 100644
--- a/indra/newview/llpanelmaininventory.h
+++ b/indra/newview/llpanelmaininventory.h
@@ -96,6 +96,7 @@ class LLPanelMainInventory : public LLPanel, LLInventoryObserver
 	void toggleFindOptions();
 
     void resetFilters();
+    void resetAllItemsFilters();
 
 protected:
 	//
diff --git a/indra/newview/llpanelmediasettingsgeneral.cpp b/indra/newview/llpanelmediasettingsgeneral.cpp
index 416857bd305f2b22567a03381c30065d14c2a65f..8380394f2cc2c4b2f5d8bd0b459d142d31974932 100644
--- a/indra/newview/llpanelmediasettingsgeneral.cpp
+++ b/indra/newview/llpanelmediasettingsgeneral.cpp
@@ -39,6 +39,7 @@
 #include "llagent.h"
 #include "llviewerwindow.h"
 #include "llviewermedia.h"
+#include "llvovolume.h"
 #include "llsdutil.h"
 #include "llselectmgr.h"
 #include "llbutton.h"
@@ -452,10 +453,17 @@ bool LLPanelMediaSettingsGeneral::navigateHomeSelectedFace(bool only_if_current_
 					{
 						viewer_media_t media_impl =
 							LLViewerMedia::getInstance()->getMediaImplFromTextureID(object->getTE(face)->getMediaData()->getMediaID());
-						if(media_impl)
-						{
+                        if (media_impl)
+                        {
                             media_impl->setPriority(LLPluginClassMedia::PRIORITY_NORMAL);
                             media_impl->navigateHome();
+
+                            if (!only_if_current_is_empty)
+                            {
+                                LLSD media_data;
+                                media_data[LLMediaEntry::CURRENT_URL_KEY] = std::string();
+                                object->getTE(face)->mergeIntoMediaData(media_data);
+                            }
 							return true;
 						}
 					}
@@ -471,6 +479,23 @@ bool LLPanelMediaSettingsGeneral::navigateHomeSelectedFace(bool only_if_current_
 	LLObjectSelectionHandle selected_objects =LLSelectMgr::getInstance()->getSelection();
 	selected_objects->getSelectedTEValue( &functor_navigate_media, all_face_media_navigated );
 	
+    if (all_face_media_navigated)
+    {
+        struct functor_sync_to_server : public LLSelectedObjectFunctor
+        {
+            virtual bool apply(LLViewerObject* object)
+            {
+                LLVOVolume *volume = dynamic_cast<LLVOVolume*>(object);
+                if (volume)
+                {
+                    volume->sendMediaDataUpdate();
+                }
+                return true;
+            }
+        } sendfunc;
+        selected_objects->applyToObjects(&sendfunc);
+    }
+
 	// Note: we don't update the 'current URL' field until the media data itself changes
 
 	return all_face_media_navigated;
diff --git a/indra/newview/llsceneview.cpp b/indra/newview/llsceneview.cpp
index e250f9bc7a998730c056b98cc448ad670f229f06..5e339a52bf1da57f3c522456fa88c1747c573bc5 100644
--- a/indra/newview/llsceneview.cpp
+++ b/indra/newview/llsceneview.cpp
@@ -207,7 +207,7 @@ void LLSceneView::draw()
 			for (U32 i = 0; i < count; ++i)
 			{
 				F32 rad = size[idx][i];
-				total += rad;	
+				total += rad;
 				F32 y = (rad-size_domain[0])/size_range*size_rect.getHeight()+size_rect.mBottom;
 				F32 x = (F32) i / count * size_rect.getWidth() + size_rect.mLeft;
 
diff --git a/indra/newview/llskinningutil.cpp b/indra/newview/llskinningutil.cpp
index 0e14e55bf900dcd38bc40197e94455fe971f10cc..92d9b65e9d8b910f2d0990c9077e4c034f8a8ad5 100644
--- a/indra/newview/llskinningutil.cpp
+++ b/indra/newview/llskinningutil.cpp
@@ -231,6 +231,8 @@ void LLSkinningUtil::getPerVertexSkinMatrix(
     // possible to hit the bad scale case.
     llassert(valid_weights);
 #endif
+    // variable-set-but-unused error.
+    (void)valid_weights;
 }
 
 void LLSkinningUtil::initJointNums(LLMeshSkinInfo* skin, LLVOAvatar *avatar)
diff --git a/indra/newview/lltoast.h b/indra/newview/lltoast.h
index 2b1fedf74d1a5dbf48bb79d3dd4b2d844fdcd900..ab559f1e6f3279a584dc4ba33e6538874e7a47cd 100644
--- a/indra/newview/lltoast.h
+++ b/indra/newview/lltoast.h
@@ -35,6 +35,7 @@
 
 #include "llviewercontrol.h"
 #include "lltexteditor.h"
+#include <memory>
 
 #define MOUSE_LEAVE false
 #define MOUSE_ENTER true
diff --git a/indra/newview/lltoolfocus.cpp b/indra/newview/lltoolfocus.cpp
index 97e5ba0943ff50dfc515c7a4b4129896e996d17d..704006b26355cb218be0e4d0ef3aaac87c98cebc 100644
--- a/indra/newview/lltoolfocus.cpp
+++ b/indra/newview/lltoolfocus.cpp
@@ -78,6 +78,7 @@ LLToolCamera::LLToolCamera()
 	mOutsideSlopX(FALSE),
 	mOutsideSlopY(FALSE),
 	mValidClickPoint(FALSE),
+    mClickPickPending(false),
 	mValidSelection(FALSE),
 	mMouseSteering(FALSE),
 	mMouseUpX(0),
@@ -130,6 +131,11 @@ BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
 
 	mValidClickPoint = FALSE;
 
+    // Sometimes Windows issues down and up events near simultaneously
+    // without giving async pick a chance to trigged
+    // Ex: mouse from numlock emulation
+    mClickPickPending = true;
+
 	// If mouse capture gets ripped away, claim we moused up
 	// at the point we moused down. JC
 	mMouseUpX = x;
@@ -145,13 +151,15 @@ BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
 
 void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
 {
-	if (!LLToolCamera::getInstance()->hasMouseCapture())
+    LLToolCamera* camera = LLToolCamera::getInstance();
+	if (!camera->mClickPickPending)
 	{
 		return;
 	}
+    camera->mClickPickPending = false;
 
-	LLToolCamera::getInstance()->mMouseDownX = pick_info.mMousePt.mX;
-	LLToolCamera::getInstance()->mMouseDownY = pick_info.mMousePt.mY;
+    camera->mMouseDownX = pick_info.mMousePt.mX;
+    camera->mMouseDownY = pick_info.mMousePt.mY;
 
 	gViewerWindow->moveCursorToCenter();
 
@@ -161,7 +169,7 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
 	// Check for hit the sky, or some other invalid point
 	if (!hit_obj && pick_info.mPosGlobal.isExactlyZero())
 	{
-		LLToolCamera::getInstance()->mValidClickPoint = FALSE;
+        camera->mValidClickPoint = FALSE;
 		return;
 	}
 
@@ -171,7 +179,7 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
 		LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
 		if (!selection->getObjectCount() || selection->getSelectType() != SELECT_TYPE_HUD)
 		{
-			LLToolCamera::getInstance()->mValidClickPoint = FALSE;
+            camera->mValidClickPoint = FALSE;
 			return;
 		}
 	}
@@ -195,7 +203,7 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
 
 		if( !good_customize_avatar_hit )
 		{
-			LLToolCamera::getInstance()->mValidClickPoint = FALSE;
+            camera->mValidClickPoint = FALSE;
 			return;
 		}
 
@@ -240,7 +248,7 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
 
 	}
 
-	LLToolCamera::getInstance()->mValidClickPoint = TRUE;
+    camera->mValidClickPoint = TRUE;
 
 	if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgentCamera.getCameraMode() )
 	{
@@ -287,32 +295,36 @@ BOOL LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
 
 	if (hasMouseCapture())
 	{
-		if (mValidClickPoint)
-		{
-			if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgentCamera.getCameraMode() )
-			{
-				LLCoordGL mouse_pos;
-				LLVector3 focus_pos = gAgent.getPosAgentFromGlobal(gAgentCamera.getFocusGlobal());
-				BOOL success = LLViewerCamera::getInstance()->projectPosAgentToScreen(focus_pos, mouse_pos);
-				if (success)
-				{
-					LLUI::setMousePositionScreen(mouse_pos.mX, mouse_pos.mY);
-				}
-			}
-			else if (mMouseSteering)
-			{
+        // Do not move camera if we haven't gotten a pick
+        if (!mClickPickPending)
+        {
+            if (mValidClickPoint)
+            {
+                if (CAMERA_MODE_CUSTOMIZE_AVATAR == gAgentCamera.getCameraMode())
+                {
+                    LLCoordGL mouse_pos;
+                    LLVector3 focus_pos = gAgent.getPosAgentFromGlobal(gAgentCamera.getFocusGlobal());
+                    BOOL success = LLViewerCamera::getInstance()->projectPosAgentToScreen(focus_pos, mouse_pos);
+                    if (success)
+                    {
+						LLUI::setMousePositionScreen(mouse_pos.mX, mouse_pos.mY);
+                    }
+                }
+                else if (mMouseSteering)
+                {
+					LLUI::setMousePositionScreen(mMouseDownX, mMouseDownY);
+                }
+                else
+                {
+                    gViewerWindow->moveCursorToCenter();
+                }
+            }
+            else
+            {
+                // not a valid zoomable object
 				LLUI::setMousePositionScreen(mMouseDownX, mMouseDownY);
-			}
-			else
-			{
-				gViewerWindow->moveCursorToCenter();
-			}
-		}
-		else
-		{
-			// not a valid zoomable object
-			LLUI::setMousePositionScreen(mMouseDownX, mMouseDownY);
-		}
+            }
+        }
 
 		// calls releaseMouse() internally
 		setMouseCapture(FALSE);
diff --git a/indra/newview/lltoolfocus.h b/indra/newview/lltoolfocus.h
index 9e70b184bdba85c55331a47814af5fb66894e82d..bd0b10616d7c81ef89ffaa5d039d3ff9bc8aa3d8 100644
--- a/indra/newview/lltoolfocus.h
+++ b/indra/newview/lltoolfocus.h
@@ -51,6 +51,7 @@ class LLToolCamera final
 
 	virtual LLTool*	getOverrideTool(MASK mask) override { return NULL; }
 
+    void setClickPickPending() { mClickPickPending = true; }
 	static void pickCallback(const LLPickInfo& pick_info);
 	BOOL mouseSteerMode() { return mMouseSteering; }
 
@@ -67,6 +68,7 @@ class LLToolCamera final
 	BOOL	mOutsideSlopX;
 	BOOL	mOutsideSlopY;
 	BOOL	mValidClickPoint;
+    bool	mClickPickPending;
 	BOOL	mValidSelection;
 	BOOL	mMouseSteering;
 	S32		mMouseUpX;	// needed for releaseMouse()
diff --git a/indra/newview/lltoolpie.cpp b/indra/newview/lltoolpie.cpp
index 541cdd75ca02db1c3db4f838e646ab1e2ca75354..741b9d4689945f7f6d5d51ba4d1b780586f985b6 100644
--- a/indra/newview/lltoolpie.cpp
+++ b/indra/newview/lltoolpie.cpp
@@ -492,6 +492,7 @@ BOOL LLToolPie::handleLeftClickPick()
 		LLToolMgr::getInstance()->setTransientTool(LLToolCamera::getInstance());
 		gViewerWindow->hideCursor();
 		LLToolCamera::getInstance()->setMouseCapture(TRUE);
+        LLToolCamera::getInstance()->setClickPickPending();
 		LLToolCamera::getInstance()->pickCallback(mPick);
 		gAgentCamera.setFocusOnAvatar(TRUE, TRUE);
 
diff --git a/indra/newview/lltranslate.cpp b/indra/newview/lltranslate.cpp
index bb3eebbe5f3d53270dd3ce70ea2cb575764c1d34..84601da4c1d1d37176fb5482ead58352f4991355 100644
--- a/indra/newview/lltranslate.cpp
+++ b/indra/newview/lltranslate.cpp
@@ -549,6 +549,18 @@ void LLBingTranslationHandler::verifyKey(const std::string &key, LLTranslate::Ke
 }
 
 //=========================================================================
+LLTranslate::LLTranslate():
+	mCharsSeen(0),
+	mCharsSent(0),
+	mFailureCount(0),
+	mSuccessCount(0)
+{
+}
+
+LLTranslate::~LLTranslate()
+{
+}
+
 /*static*/
 void LLTranslate::translateMessage(const std::string &from_lang, const std::string &to_lang,
     const std::string &mesg, TranslationSuccess_fn success, TranslationFailure_fn failure)
@@ -637,6 +649,43 @@ bool LLTranslate::isTranslationConfigured()
 	return getPreferredHandler().isConfigured();
 }
 
+void LLTranslate::logCharsSeen(size_t count)
+{
+	mCharsSeen += count;
+}
+
+void LLTranslate::logCharsSent(size_t count)
+{
+	mCharsSent += count;
+}
+
+void LLTranslate::logSuccess(S32 count)
+{
+	mSuccessCount += count;
+}
+
+void LLTranslate::logFailure(S32 count)
+{
+	mFailureCount += count;
+}
+
+LLSD LLTranslate::asLLSD() const
+{
+	LLSD res;
+	bool on = gSavedSettings.getBOOL("TranslateChat");
+	res["on"] = on;
+	res["chars_seen"] = (S32) mCharsSeen;
+	if (on)
+	{
+		res["chars_sent"] = (S32) mCharsSent;
+		res["success_count"] = mSuccessCount;
+		res["failure_count"] = mFailureCount;
+		res["language"] = getTranslateLanguage();  
+		res["service"] = gSavedSettings.getString("TranslationService");
+	}
+	return res;
+}
+
 // static
 LLTranslationAPIHandler& LLTranslate::getPreferredHandler()
 {
diff --git a/indra/newview/lltranslate.h b/indra/newview/lltranslate.h
index e0722fbd83f92dce9b41c58012e19875893d6621..58707e2d3620e1c0f8b59d24be16f2f7a546b9b3 100644
--- a/indra/newview/lltranslate.h
+++ b/indra/newview/lltranslate.h
@@ -30,6 +30,8 @@
 #include "llbufferstream.h"
 #include <boost/function.hpp>
 
+#include "llsingleton.h"
+
 namespace Json
 {
     class Value;
@@ -48,8 +50,10 @@ class LLTranslationAPIHandler;
  *
  * API keys for translation are taken from saved settings.
  */
-class LLTranslate
+class LLTranslate: public LLSingleton<LLTranslate>
 {
+	LLSINGLETON(LLTranslate);
+	~LLTranslate();
 	LOG_CLASS(LLTranslate);
 
 public :
@@ -94,9 +98,19 @@ public :
     static std::string addNoTranslateTags(std::string mesg);
     static std::string removeNoTranslateTags(std::string mesg);
 
+	void logCharsSeen(size_t count);
+	void logCharsSent(size_t count);
+	void logSuccess(S32 count);
+	void logFailure(S32 count);
+	LLSD asLLSD() const;
 private:
 	static LLTranslationAPIHandler& getPreferredHandler();
 	static LLTranslationAPIHandler& getHandler(EService service);
+
+	size_t mCharsSeen;
+	size_t mCharsSent;
+	S32 mFailureCount;
+	S32 mSuccessCount;
 };
 
 #endif
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 5c749dd8aa9dd141a518f336d98b5634dffcb840..83eb0f7c6b1d9b6af74afd92376a4737fd6d13b0 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -2526,6 +2526,7 @@ void translateSuccess(LLChat chat, LLSD toastArgs, std::string originalMsg, std:
         chat.mText += " (" + LLTranslate::removeNoTranslateTags(translation) + ")";
     }
 
+	LLTranslate::instance().logSuccess(1);
     LLNotificationsUI::LLNotificationManager::instance().onChat(chat, toastArgs);
 }
 
@@ -2535,6 +2536,7 @@ void translateFailure(LLChat chat, LLSD toastArgs, int status, const std::string
     LLStringUtil::replaceString(msg, "\n", " "); // we want one-line error messages
     chat.mText += " (" + msg + ")";
 
+	LLTranslate::instance().logFailure(1);
     LLNotificationsUI::LLNotificationManager::instance().onChat(chat, toastArgs);
 }
 
@@ -2935,6 +2937,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
 		LLSD args;
 		chat.mOwnerID = owner_id;
 
+		LLTranslate::instance().logCharsSeen(mesg.size());
 		if (gSavedSettings.getBOOL("TranslateChat") && chat.mSourceType != CHAT_SOURCE_SYSTEM)
 		{
 			if (chat.mChatStyle == CHAT_STYLE_IRC)
@@ -2944,6 +2947,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
 			const std::string from_lang = ""; // leave empty to trigger autodetect
 			const std::string to_lang = LLTranslate::getTranslateLanguage();
 
+			LLTranslate::instance().logCharsSent(mesg.size());
             LLTranslate::translateMessage(from_lang, to_lang, mesg,
                 boost::bind(&translateSuccess, chat, args, mesg, from_lang, _1, _2),
                 boost::bind(&translateFailure, chat, args, _1, _2));
@@ -6247,8 +6251,12 @@ void process_script_question(LLMessageSystem *msg, void **user_data)
 			{
 				count++;
 				known_questions |= script_perm.permbit;
-				// check whether permission question should cause special caution dialog
-				caution |= (script_perm.caution);
+
+                if (!LLMuteList::isLinden(owner_name))
+                {
+                    // check whether permission question should cause special caution dialog
+                    caution |= (script_perm.caution);
+                }
 
 				if (("ScriptTakeMoney" == script_perm.question) && has_not_only_debit)
 					continue;
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index fc92434cbc5b1f3f3669bbd85f64c984d1efaada..db476dbacc0973806d681a884aa689c4e02a1267 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -858,7 +858,10 @@ void LLViewerObjectList::updateApparentAngles(LLAgent &agent)
 	{
 		virtual bool apply(LLViewerObject* objectp)
 		{
-			objectp->boostTexturePriority();
+            if (objectp)
+            {
+                objectp->boostTexturePriority();
+            }
 			return true;
 		}
 	} func;
diff --git a/indra/newview/llviewerprecompiledheaders.cpp b/indra/newview/llviewerprecompiledheaders.cpp
deleted file mode 100644
index 307e9037269a6c6e4b7de41fcd8d58f4a13cd26a..0000000000000000000000000000000000000000
--- a/indra/newview/llviewerprecompiledheaders.cpp
+++ /dev/null
@@ -1,34 +0,0 @@
-/** 
- * @file llviewerprecompiledheaders.cpp
- * @brief precompiled headers for newview project
- *
- * $LicenseInfo:firstyear=2005&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-// source file that includes just the standard includes
-// newview.pch will be the pre-compiled header
-// llviewerprecompiledheaders.obj will contain the pre-compiled type information
-
-#include "llviewerprecompiledheaders.h"
-
-// TODO: reference any additional headers you need in llviewerprecompiledheaders.h
-// and not in this file
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 9020c371cbc88fe4933b5d6a04329c60d7c77bc0..6bcc0009070195a0fce613bea40503ddafa79548 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -63,6 +63,7 @@
 #include "llcorehttputil.h"
 #include "llvoicevivox.h"
 #include "llinventorymodel.h"
+#include "lltranslate.h"
 
 namespace LLStatViewer
 {
@@ -499,6 +500,7 @@ void send_viewer_stats(bool include_preferences)
 	agent["meters_traveled"] = gAgent.getDistanceTraveled();
 	agent["regions_visited"] = gAgent.getRegionsVisited();
 	agent["mem_use"] = LLMemory::getCurrentRSS() / 1024.0;
+	agent["translation"] = LLTranslate::instance().asLLSD();
 
 	LLSD &system = body["system"];
 	
@@ -508,6 +510,7 @@ void send_viewer_stats(bool include_preferences)
     system["cpu_sse"] = gSysCPU.getSSEVersions();
 	system["address_size"] = ADDRESS_SIZE;
 	system["os_bitness"] = LLOSInfo::instance().getOSBitness();
+	system["hardware_concurrency"] = (LLSD::Integer) std::thread::hardware_concurrency();
 	unsigned char MACAddress[MAC_ADDRESS_BYTES];
 	LLUUID::getNodeID(MACAddress);
 	std::string macAddressString = llformat("%02x-%02x-%02x-%02x-%02x-%02x",
@@ -529,6 +532,7 @@ void send_viewer_stats(bool include_preferences)
 
 	gGLManager.asLLSD(system["gl"]);
 
+
 	S32 shader_level = 0;
 	if (LLPipeline::sRenderDeferred)
 	{
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index fdd5dfdcec70673b98e6b3c8d702f37379f6b17e..ad85c5fac8429c3f1d7d7334841d99088336158b 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -534,6 +534,8 @@ class LLViewerFetchedTexture : public LLViewerTexture
 	LLFrameTimer mStopFetchingTimer;	// Time since mDecodePriority == 0.f.
 
 	BOOL  mInImageList;				// TRUE if image is in list (in which case don't reset priority!)
+	// This needs to be atomic, since it is written both in the main thread
+	// and in the GL image worker thread... HB
 	LLAtomicBool mNeedsCreateTexture;	
 
 	BOOL   mForSculpt ; //a flag if the texture is used as sculpt data.
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index 7a3a905831f9f6bdb12782e8060b280249ed404c..919d89228df202cd9c44d09f98995d475a7ec2c2 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -1199,6 +1199,7 @@ F32 LLViewerTextureList::updateImagesFetchTextures(F32 max_time)
 	{
 		LLViewerFetchedTexture* imagep = *iter3++;
         imagep->updateFetch();
+
 		if (min_count <= min_update_count)
 		{
 			mLastFetchKey = LLTextureKey(imagep->getID(), (ETexListType)imagep->getTextureListType());
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 93bd6468a91e56d415de4edd5e214c9dea56d6bf..abda8cdc0dbd4ffcee5629d596a39d08bce34285 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -3659,14 +3659,15 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
 
 void LLVOAvatar::addNameTagLine(const std::string& line, const LLColor4& color, S32 style, const LLFontGL* font, const bool use_ellipses)
 {
+    // extra width (NAMETAG_MAX_WIDTH) is for names only, not for chat
 	llassert(mNameText);
 	if (mVisibleChat)
 	{
-		mNameText->addLabel(line);
+		mNameText->addLabel(line, LLHUDNameTag::NAMETAG_MAX_WIDTH);
 	}
 	else
 	{
-		mNameText->addLine(line, color, (LLFontGL::StyleFlags)style, font, use_ellipses);
+		mNameText->addLine(line, color, (LLFontGL::StyleFlags)style, font, use_ellipses, LLHUDNameTag::NAMETAG_MAX_WIDTH);
 	}
     mNameIsSet |= !line.empty();
 }
diff --git a/indra/newview/llwatchdog.cpp b/indra/newview/llwatchdog.cpp
index a2044e084d963629d3de06d00a66f193f4ef1bfc..7024753c104db46518f3e0a639d307121576b78d 100644
--- a/indra/newview/llwatchdog.cpp
+++ b/indra/newview/llwatchdog.cpp
@@ -222,18 +222,17 @@ void LLWatchdog::run()
 	if(current_run_delta > (WATCHDOG_SLEEP_TIME_USEC * TIME_ELAPSED_MULTIPLIER))
 	{
 		LL_INFOS() << "Watchdog thread delayed: resetting entries." << LL_ENDL;
-		std::for_each(mSuspects.begin(), 
-			mSuspects.end(), 
-			std::mem_fn(&LLWatchdogEntry::reset)
-			);
+		for (const auto& suspect : mSuspects)
+		{
+			suspect->reset();
+		}
 	}
 	else
 	{
 		SuspectsRegistry::iterator result = 
 			std::find_if(mSuspects.begin(), 
-                mSuspects.end(),
-                [](LLWatchdogEntry* entry){ return !entry->isAlive(); }
-				);
+				mSuspects.end(),
+				[](const LLWatchdogEntry* suspect){ return ! suspect->isAlive(); });
 		if(result != mSuspects.end())
 		{
 			// error!!!
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index aab4bab3316e6e844ece279f157babbccb074f9e..d5120a7d533f429359dec4e946b09855cb46e5b3 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -826,13 +826,10 @@ void LLWorld::updateParticles()
 
 void LLWorld::renderPropertyLines()
 {
-	S32 region_count = 0;
-
 	for (region_list_t::iterator iter = mVisibleRegionList.begin();
 		 iter != mVisibleRegionList.end(); ++iter)
 	{
 		LLViewerRegion* regionp = *iter;
-		region_count++;
 		regionp->renderPropertyLines();
 	}
 }
diff --git a/indra/newview/llxmlrpctransaction.cpp b/indra/newview/llxmlrpctransaction.cpp
index f8e5695079af16501b90adfe4322f8a272def78d..0462ea40a1611d280044eef4a4035ac1b7d5b31d 100644
--- a/indra/newview/llxmlrpctransaction.cpp
+++ b/indra/newview/llxmlrpctransaction.cpp
@@ -44,7 +44,12 @@
 #include "llviewercontrol.h"
 
 // Have to include these last to avoid queue redefinition!
+
+#ifdef LL_USESYSTEMLIBS
+#include <xmlrpc.h>
+#else
 #include <xmlrpc-epi/xmlrpc.h>
+#endif
 
 #include "llappviewer.h"
 #include "lltrans.h"
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 1558ba48856e31a4dc993c3259fe7ce439570a10..781b43913033e4a48620df42d1123f0c60164238 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -1956,20 +1956,17 @@ void LLPipeline::unlinkDrawable(LLDrawable *drawable)
 void LLPipeline::removeMutedAVsLights(LLVOAvatar* muted_avatar)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
-    light_set_t::iterator iter = gPipeline.mNearbyLights.begin();
-
-    while (iter != gPipeline.mNearbyLights.end())
-    {
-        if (iter->drawable->getVObj()->isAttachment() && iter->drawable->getVObj()->getAvatar() == muted_avatar)
-        {
-            gPipeline.mLights.erase(iter->drawable);
-            iter = gPipeline.mNearbyLights.erase(iter);
-        }
-        else
-        {
-            iter++;
-        }
-    }
+	for (light_set_t::iterator iter = gPipeline.mNearbyLights.begin();
+		 iter != gPipeline.mNearbyLights.end(); iter++)
+	{
+        const LLViewerObject *vobj = iter->drawable->getVObj();
+        if (vobj && vobj->getAvatar()
+            && vobj->isAttachment() && vobj->getAvatar() == muted_avatar)
+		{
+			gPipeline.mLights.erase(iter->drawable);
+			gPipeline.mNearbyLights.erase(iter);
+		}
+	}
 }
 
 U32 LLPipeline::addObject(LLViewerObject *vobj)
diff --git a/indra/newview/skins/default/xui/de/floater_tools.xml b/indra/newview/skins/default/xui/de/floater_tools.xml
index a4dfde66bcccd4d942b72d4e9c830eb4ae443cf7..f6208e11a5d956a9e3f0983fa4addba481c7f09a 100644
--- a/indra/newview/skins/default/xui/de/floater_tools.xml
+++ b/indra/newview/skins/default/xui/de/floater_tools.xml
@@ -40,7 +40,7 @@
 		Klicken und ziehen, um Land auszuwählen
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] Objekte ausgewählt, Auswirkung auf Land [LAND_IMPACT]
+		[OBJ_COUNT] Objekte ausgewählt, Auswirkung auf Land [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Verbleibende Kapazität [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/en/floater_display_name.xml b/indra/newview/skins/default/xui/en/floater_display_name.xml
index 3c8f4158605579d383dfa14fdcad8c1e0fc97ecb..f3431da858d78c15e9ccdf10845dde815941c8cf 100644
--- a/indra/newview/skins/default/xui/en/floater_display_name.xml
+++ b/indra/newview/skins/default/xui/en/floater_display_name.xml
@@ -56,7 +56,7 @@
       max_length_chars="31"
       height="20"
       top_pad="5"
-      left="50" />
+      left_delta="0" />
 	<text
        top_pad="15"
        left="25"
@@ -72,23 +72,33 @@
       max_length_chars="31"
       height="20"
       top_pad="5"
-      left="50" />
+      left_delta="0" />
+    <button
+     label="Reset"
+     layout="topleft"
+     font="SansSerif"
+     width="120"
+     height="23"
+     top_pad="40"
+     left_delta="0"
+     name="reset_btn"
+     tool_tip="Use Username as a Display Name" />
     <button
      height="23"
      label="Save"
      layout="topleft"
      font="SansSerif"
-     left="35"
+     left_pad="35"
      name="save_btn"
      tool_tip="Save your new Display Name" 
-     top_pad="40"
+     top_delta="0"
      width="120" />
     <button
      height="23"
      label="Cancel"
      font="SansSerif"
      layout="topleft"
-     left_pad="125"
+     left_pad="5"
      name="cancel_btn"
      width="120" />
 </floater>
diff --git a/indra/newview/skins/default/xui/en/floater_tools.xml b/indra/newview/skins/default/xui/en/floater_tools.xml
index 0e3a5f2e45f7240d5b32d4fc276ffc86b35d30d5..d71026f2179f6e3d46d2765ad876994fe865c4d1 100644
--- a/indra/newview/skins/default/xui/en/floater_tools.xml
+++ b/indra/newview/skins/default/xui/en/floater_tools.xml
@@ -1192,7 +1192,6 @@ even though the user gets a free copy.
       decimal_digits="0"
       increment="1"
       left_pad="0"
-      control_name="Edit Cost"
       name="Edit Cost"
       label="L$"
       label_width="15"
diff --git a/indra/newview/skins/default/xui/en/menu_participant_view.xml b/indra/newview/skins/default/xui/en/menu_participant_view.xml
index 7ea87ee05c442542a9bcc79117d6b710e832c664..b9750284cdf29e61b30b00ada3d99bdc4c788bb4 100644
--- a/indra/newview/skins/default/xui/en/menu_participant_view.xml
+++ b/indra/newview/skins/default/xui/en/menu_participant_view.xml
@@ -90,7 +90,7 @@
          parameter="conversation_log" />
     </menu_item_check>
     <menu_item_separator layout="topleft" />
-    <menu_item_check name="Translate_chat" label="Translate Nearby chat">
+    <menu_item_check name="Translate_chat" label="Translate chat">
         <menu_item_check.on_click
          function="IMFloaterContainer.Action" 
          parameter="Translating.Toggle" />
diff --git a/indra/newview/skins/default/xui/en/panel_media_settings_general.xml b/indra/newview/skins/default/xui/en/panel_media_settings_general.xml
index 2316beeb36c8cef72fe69dbd28852a079081a0b1..4c566dc60a13ce971b51c2f840c132512b713ddc 100644
--- a/indra/newview/skins/default/xui/en/panel_media_settings_general.xml
+++ b/indra/newview/skins/default/xui/en/panel_media_settings_general.xml
@@ -92,10 +92,7 @@
    label="Reset"
    left_delta="233" 
    name="current_url_reset_btn" 
-   width="110" > 
-   <button.commit_callback
-	     function="Media.ResetCurrentUrl"/>
-  </button>
+   width="110"/>
   <check_box 
    bottom_delta="-25" 
    enabled="true" 
diff --git a/indra/newview/skins/default/xui/en/panel_region_estate.xml b/indra/newview/skins/default/xui/en/panel_region_estate.xml
index 9b9c870c49f384ebd8a41ef55652b567df02232a..33e99a46aecf4a62d341ead9666955bb21e76679 100644
--- a/indra/newview/skins/default/xui/en/panel_region_estate.xml
+++ b/indra/newview/skins/default/xui/en/panel_region_estate.xml
@@ -82,7 +82,7 @@
     <view_border
      bevel_style="none"
      follows="top|left"
-     height="185"
+     height="205"
      layout="topleft"
      left="10"
      top_pad="5"
@@ -125,6 +125,16 @@
      tool_tip="Residents must have payment information on file to access this estate.  See the [SUPPORT_SITE] for more information."
      top_pad="2"
      width="278" />
+    <check_box
+     follows="top|left"
+     height="18"
+     label="Must not be a scripted agent"
+     layout="topleft"
+     left_delta="0"
+     name="limit_bots"
+     tool_tip="Residents must not be a scripted agents (bots) to access this estate.  See the [SUPPORT_SITE] for more information."
+     top_pad="2"
+     width="278" />
     <check_box
      height="18"
      label="Parcel owners can be more restrictive"
diff --git a/indra/newview/skins/default/xui/en/sidepanel_item_info.xml b/indra/newview/skins/default/xui/en/sidepanel_item_info.xml
index 5a6252550240d7b9213a084f377ad7f086fe70c8..4d5b7f35e0bf27b49e869d0531e4a44d59a151a5 100644
--- a/indra/newview/skins/default/xui/en/sidepanel_item_info.xml
+++ b/indra/newview/skins/default/xui/en/sidepanel_item_info.xml
@@ -467,7 +467,6 @@
         follows="left|top"
         decimal_digits="0"
         increment="1"
-        control_name="Edit Cost"
         name="Edit Cost"
         label="Price: L$"
         label_width="75"
@@ -478,8 +477,72 @@
         max_val="999999999"
         top_pad="10"
         tool_tip="Object cost." />
-    </panel>
-
+      <text
+        type="string"
+        length="1"
+        follows="left|top"
+        height="10"
+        layout="topleft"
+        left="10"
+        name="BaseMaskDebug"
+        text_color="White"
+        top_pad="30"
+        width="130">
+        B:
+      </text>
+      <text
+        type="string"
+        length="1"
+        follows="left|top"
+        height="10"
+        layout="topleft"
+        left_delta="60"
+        name="OwnerMaskDebug"
+        text_color="White"
+        top_delta="0"
+        width="270">
+        O:
+      </text>
+      <text
+        type="string"
+        length="1"
+        follows="left|top"
+        height="10"
+        layout="topleft"
+        left_delta="60"
+        name="GroupMaskDebug"
+        text_color="White"
+        top_delta="0"
+        width="210">
+        G:
+      </text>
+      <text
+        type="string"
+        length="1"
+        follows="left|top"
+        height="10"
+        layout="topleft"
+        left_delta="60"
+        name="EveryoneMaskDebug"
+        text_color="White"
+        top_delta="0"
+        width="150">
+        E:
+      </text>
+      <text
+       type="string"
+       length="1"
+       follows="left|top"
+       height="10"
+       layout="topleft"
+       left_delta="60"
+       name="NextMaskDebug"
+       text_color="White"
+       top_delta="0"
+       width="90">
+        N:
+      </text>
+    </panel>   
   </scroll_container>
   <panel
     height="30"
diff --git a/indra/newview/skins/default/xui/en/sidepanel_task_info.xml b/indra/newview/skins/default/xui/en/sidepanel_task_info.xml
index 367a194daf23154f59bc1f133c18d665c33c1577..107539ad7ffadf676ebf23acf85d95a8ab8068ac 100644
--- a/indra/newview/skins/default/xui/en/sidepanel_task_info.xml
+++ b/indra/newview/skins/default/xui/en/sidepanel_task_info.xml
@@ -462,7 +462,6 @@
         increment="1"
         top_pad="10"
         left="120"
-        control_name="Edit Cost"
         name="Edit Cost"
         label="Price: L$"
         label_width="73"				
diff --git a/indra/newview/skins/default/xui/en/strings.xml b/indra/newview/skins/default/xui/en/strings.xml
index e1e8972feb83037da9085509d13175739f23faff..713d36e5250a1ef9fde3e52bfb8f7a75655fd827 100644
--- a/indra/newview/skins/default/xui/en/strings.xml
+++ b/indra/newview/skins/default/xui/en/strings.xml
@@ -148,7 +148,7 @@ Voice Server Version: [VOICE_VERSION]
 	<string name="LoginFailedViewerNotPermitted">
     The viewer you are using can no longer access [CURRENT_GRID]. Please visit the following page to download a new viewer:
 https://www.alchemyviewer.org/pages/downloads.html</string>
-	<string name="LoginFailed">Grid emergency login failure.
+	<string name="LoginFailed">"Login process did not complete due to system issues. Try again in a few minutes.
 If you feel this is an error, please contact support.</string>
 	<string name="LoginIntermediateOptionalUpdateAvailable">Optional viewer update available: [VERSION]</string>
 	<string name="LoginFailedRequiredUpdate">Required viewer update: [VERSION]</string>
diff --git a/indra/newview/skins/default/xui/es/floater_tools.xml b/indra/newview/skins/default/xui/es/floater_tools.xml
index 6fce98472d1d5715a76f457dfdd3256e86c2180b..ffa85a2f04221e19cadf85cfddd415502784251b 100644
--- a/indra/newview/skins/default/xui/es/floater_tools.xml
+++ b/indra/newview/skins/default/xui/es/floater_tools.xml
@@ -25,7 +25,7 @@
 		Pulsa y arrastra para seleccionar el terreno.
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] objetos seleccionados, impacto en el terreno [LAND_IMPACT]
+		[OBJ_COUNT] objetos seleccionados, impacto en el terreno [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Capacidad restante [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/fr/floater_tools.xml b/indra/newview/skins/default/xui/fr/floater_tools.xml
index 9597d38dcab206587c333bbc9541d552daea738d..c161f3f5306de68d1a20d0a607a2278abea1e613 100644
--- a/indra/newview/skins/default/xui/fr/floater_tools.xml
+++ b/indra/newview/skins/default/xui/fr/floater_tools.xml
@@ -40,7 +40,7 @@
 		Cliquez et faites glisser pour sélectionner le terrain.
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] objets sélectionnés, impact sur le terrain [LAND_IMPACT]
+		[OBJ_COUNT] objets sélectionnés, impact sur le terrain [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Capacité restante [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/it/floater_tools.xml b/indra/newview/skins/default/xui/it/floater_tools.xml
index a21ae9a485ad110fac397d7888d49c694463c902..f98a2da277cbec7800ecd769f473537064e078f1 100644
--- a/indra/newview/skins/default/xui/it/floater_tools.xml
+++ b/indra/newview/skins/default/xui/it/floater_tools.xml
@@ -40,7 +40,7 @@
 		Clicca e trascina per selezionare il terreno
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] oggetti selezionati, impatto terreno [LAND_IMPACT]
+		[OBJ_COUNT] oggetti selezionati, impatto terreno [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Capacità restante [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/ja/floater_tools.xml b/indra/newview/skins/default/xui/ja/floater_tools.xml
index aec0dbdb555fa9cb77d5564eeba240b5ce7b9bbf..13f766698ebdd9746fa8f8c23dde2a150b6b851f 100644
--- a/indra/newview/skins/default/xui/ja/floater_tools.xml
+++ b/indra/newview/skins/default/xui/ja/floater_tools.xml
@@ -40,7 +40,7 @@
 		土地をクリックし、ドラッグして選択
 	</floater.string>
 	<floater.string name="status_selectcount">
-		選択されているオブジェクトは [OBJ_COUNT] 個、土地の負荷は [LAND_IMPACT]
+		選択されているオブジェクトは [OBJ_COUNT] 個、土地の負荷は [LAND_IMPACT] [secondlife:///app/openfloater/object_weights 詳細]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		残りの許容数 [LAND_CAPACITY]。
diff --git a/indra/newview/skins/default/xui/pl/floater_tools.xml b/indra/newview/skins/default/xui/pl/floater_tools.xml
index 5e2ed4a3510b46a42b5e662bf0b06ef00ef1628e..8932a86fd1c8588eadc0c576252e8411e1da7864 100644
--- a/indra/newview/skins/default/xui/pl/floater_tools.xml
+++ b/indra/newview/skins/default/xui/pl/floater_tools.xml
@@ -40,7 +40,7 @@
 		Kliknij i przeciągnij, aby zaznaczyć teren
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] zaznaczonych obiektów, wpływ na strefę: [LAND_IMPACT]
+		[OBJ_COUNT] zaznaczonych obiektów, wpływ na strefę: [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Pojemność pozostała: [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/pt/floater_tools.xml b/indra/newview/skins/default/xui/pt/floater_tools.xml
index 0882f485a6e652b0911328b5b1dc385430b29b51..c0eab171c8bbdd39928e44f9cc88e64f93a9316f 100644
--- a/indra/newview/skins/default/xui/pt/floater_tools.xml
+++ b/indra/newview/skins/default/xui/pt/floater_tools.xml
@@ -40,7 +40,7 @@
 		Clicar e arrastar para selecionar a terra
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] objetos selecionados, impacto no terreno [LAND_IMPACT]
+		[OBJ_COUNT] objetos selecionados, impacto no terreno [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Capacidade restante [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/ru/floater_tools.xml b/indra/newview/skins/default/xui/ru/floater_tools.xml
index 82ee3c49ae112976ff71d58d94935659a4b0c69c..44f54aabb6dfd00aea2739b67076b5d2fbe15072 100644
--- a/indra/newview/skins/default/xui/ru/floater_tools.xml
+++ b/indra/newview/skins/default/xui/ru/floater_tools.xml
@@ -40,7 +40,7 @@
 		Щелкните и перетащите для выделения земли
 	</floater.string>
 	<floater.string name="status_selectcount">
-		Выбрано объектов: [OBJ_COUNT], влияние на землю [LAND_IMPACT]
+		Выбрано объектов: [OBJ_COUNT], влияние на землю [LAND_IMPACT] [secondlife:///app/openfloater/object_weights ?]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Остаток емкости [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/tr/floater_tools.xml b/indra/newview/skins/default/xui/tr/floater_tools.xml
index d6b9a4a533f79d4cb91b938908ec906dbfaa41c8..d48a617e388f01483405090a9b4b2e281f7cf630 100644
--- a/indra/newview/skins/default/xui/tr/floater_tools.xml
+++ b/indra/newview/skins/default/xui/tr/floater_tools.xml
@@ -40,7 +40,7 @@
 		Araziyi seçmek için tıklayın ve sürükleyin
 	</floater.string>
 	<floater.string name="status_selectcount">
-		[OBJ_COUNT] nesne seçili, [LAND_IMPACT] arazi etkisi
+		[OBJ_COUNT] nesne seçili, [LAND_IMPACT] arazi etkisi [secondlife:///app/openfloater/object_weights Ek bilgi]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		Kalan kapasite [LAND_CAPACITY].
diff --git a/indra/newview/skins/default/xui/zh/floater_tools.xml b/indra/newview/skins/default/xui/zh/floater_tools.xml
index 539c7454f1506453509da5697584e2a3bdceabb0..f83b058ce18b32196f875077a662324397e64d7e 100644
--- a/indra/newview/skins/default/xui/zh/floater_tools.xml
+++ b/indra/newview/skins/default/xui/zh/floater_tools.xml
@@ -40,7 +40,7 @@
 		按住並拖曳,可以選取土地
 	</floater.string>
 	<floater.string name="status_selectcount">
-		選取了 [OBJ_COUNT] 個物件,土地衝擊量 [LAND_IMPACT]
+		選取了 [OBJ_COUNT] 個物件,土地衝擊量 [LAND_IMPACT] [secondlife:///app/openfloater/object_weights 詳情]
 	</floater.string>
 	<floater.string name="status_remaining_capacity">
 		剩餘容納量 [LAND_CAPACITY]。
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index 9f3aae2ee8022ed49322a01378fc4e3f3b703517..98c710c395ad31fc8a6102d5883fbed8cf8eea44 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -83,12 +83,12 @@ def construct(self):
                 # include the entire shaders directory recursively
                 self.path("shaders")
                 # include the extracted list of contributors
-                contributions_path = "../../doc/contributions.txt"
+                contributions_path = os.path.join(self.args['source'], "..", "..", "doc", "contributions.txt")
                 contributor_names = self.extract_names(contributions_path)
                 self.put_in_file(contributor_names, "contributors.txt", src=contributions_path)
 
                 # include the extracted list of supporters
-                supporters_path = "../../doc/supporters.txt"
+                supporters_path = os.path.join(self.args['source'], "..", "..", "doc", "supporters.txt")
                 supporters_names = self.extract_names(supporters_path)
                 self.put_in_file(supporters_names, "supporters.txt", src=supporters_path)
 
@@ -451,7 +451,7 @@ def construct(self):
         
         # Get shared libs from the shared libs staging directory
         with self.prefix(src=os.path.join(self.args['build'], os.pardir,
-                                          'sharedlibs', self.args['configuration'])):
+                                          'sharedlibs', self.args['buildtype'])):
             # For image support
             self.path("openjp2.dll")
 
@@ -463,7 +463,7 @@ def construct(self):
 
             # Get fmodstudio dll for audio engine, continue if missing
             if self.args['fmodstudio'] == 'ON' or self.args['fmodstudio'] == 'TRUE':
-                if self.args['configuration'].lower() == 'debug':
+                if self.args['buildtype'].lower() == 'debug':
                     self.path("fmodL.dll", "fmodL.dll")
                 else:
                     self.path(src="fmod.dll", dst="fmod.dll")
@@ -515,7 +515,7 @@ def construct(self):
             # CEF runtime files - debug
             # CEF runtime files - not debug (release, relwithdebinfo etc.)
             config = 'debug' if self.args['configuration'].lower() == 'debug' else 'release'
-            if self.args['configuration'].lower() != 'debug':
+            if self.args['buildtype'].lower() != 'debug':
                 with self.prefix(src=os.path.join(pkgdir, 'bin', config)):
                     self.path("chrome_elf.dll")
                     self.path("d3dcompiler_47.dll")
diff --git a/indra/test/CMakeLists.txt b/indra/test/CMakeLists.txt
index ca2f0fc967f6689c1dccc057d9bfa0426d7e34cc..a5f28c6a5a1bf208f2e8c3cbed2fc89c73ea1055 100644
--- a/indra/test/CMakeLists.txt
+++ b/indra/test/CMakeLists.txt
@@ -6,32 +6,10 @@ include(00-Common)
 include(Sentry)
 include(LLCommon)
 include(LLCoreHttp)
-include(LLInventory)
-include(LLMath)
-include(LLMessage)
-include(LLFileSystem)
-include(LLXML)
 include(Linking)
 include(Tut)
 include(LLAddBuildTest)
 
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLCOREHTTP_INCLUDE_DIRS}
-    ${LLDATABASE_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLMESSAGE_INCLUDE_DIRS}
-    ${LLINVENTORY_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    ${LSCRIPT_INCLUDE_DIRS}
-    ${TUT_INCLUDE_DIR}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
-
 set(test_SOURCE_FILES
     io.cpp
     llapp_tut.cpp
@@ -73,37 +51,19 @@ if (NOT WINDOWS)
        )
 endif (NOT WINDOWS)
 
-set_source_files_properties(${test_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND test_SOURCE_FILES ${test_HEADER_FILES})
 
 add_executable(lltest ${test_SOURCE_FILES})
 
-if (USE_SENTRY)
-  set_target_properties(lltest PROPERTIES COMPILE_DEFINITIONS "${SENTRY_DEFINE}")
-endif (USE_SENTRY)
-
 target_link_libraries(lltest
-    ${LLDATABASE_LIBRARIES}
-    ${LLINVENTORY_LIBRARIES}
-    ${LLMESSAGE_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${LSCRIPT_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${EXPAT_LIBRARIES}
-    ${PTHREAD_LIBRARY}
-    ${WINDOWS_LIBRARIES}
-    ${BOOST_PROGRAM_OPTIONS_LIBRARY}
-    ${BOOST_REGEX_LIBRARY}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
-    ${DL_LIBRARY}
-    )
+        llinventory
+        llmessage
+        llmath
+        llfilesystem
+        llxml
+        llcommon
+        llcorehttp
+        )
 
 if (WINDOWS)
   set_target_properties(lltest
@@ -115,10 +75,10 @@ endif (WINDOWS)
 
 set(TEST_EXE $<TARGET_FILE:lltest>)
 
-SET_TEST_PATH(DYLD_LIBRARY_PATH)
+SET_TEST_PATH(LD_LIBRARY_PATH)
 
 LL_TEST_COMMAND(command 
-  "${DYLD_LIBRARY_PATH}"
+  "${LD_LIBRARY_PATH}"
   "${TEST_EXE}"
   "--output=${CMAKE_CURRENT_BINARY_DIR}/cpp_test_results.txt" 
   "--touch=${CMAKE_CURRENT_BINARY_DIR}/cpp_tests_ok.txt")
@@ -139,4 +99,13 @@ set(test_results ${CMAKE_CURRENT_BINARY_DIR}/cpp_tests_ok.txt)
 # developers choose to disable LL_TESTS.
 if (LL_TESTS)  
     add_custom_target(tests_ok ALL DEPENDS ${test_results})
+    if(DARWIN)
+      # Support our "@executable_path/../Resources" load path for our test
+      # executable. This SHOULD properly be "$<TARGET_FILE_DIR:lltest>/Resources",
+      # but the CMake $<TARGET_FILE_DIR> generator expression isn't evaluated by
+      # CREATE_LINK, so fudge it.
+      add_custom_command( TARGET lltest POST_BUILD
+              COMMAND cmake -E create_symlink ${SHARED_LIB_STAGING_DIR} ${CMAKE_BINARY_DIR}/test/Resources
+              )
+    endif()
 endif (LL_TESTS)
diff --git a/indra/test/lldoubledispatch_tut.cpp b/indra/test/lldoubledispatch_tut.cpp
index e38d0e92a37df87af763c7f450738f20e9e598a2..dbf55e666f19b3173ea4521c9a7942187462b82f 100644
--- a/indra/test/lldoubledispatch_tut.cpp
+++ b/indra/test/lldoubledispatch_tut.cpp
@@ -35,8 +35,9 @@
 #include "lldoubledispatch.h"
 // STL headers
 // std headers
-#include <string>
 #include <iostream>
+#include <memory>
+#include <string>
 #include <typeinfo>
 // external library headers
 // other Linden headers
diff --git a/indra/viewer_components/login/CMakeLists.txt b/indra/viewer_components/login/CMakeLists.txt
index 23518b791c0a7d78967376b837565b9b86c25858..8381803b03870a8abb3c96da6b21f62776307c22 100644
--- a/indra/viewer_components/login/CMakeLists.txt
+++ b/indra/viewer_components/login/CMakeLists.txt
@@ -7,21 +7,7 @@ if(LL_TESTS)
   include(LLAddBuildTest)
 endif(LL_TESTS)
 include(LLCommon)
-include(LLMath)
-include(LLXML)
-include(Boost)
 include(LLCoreHttp)
-include(LLMessage)
-
-include_directories(
-    ${LLCOMMON_INCLUDE_DIRS}
-    ${LLMATH_INCLUDE_DIRS}
-    ${LLXML_INCLUDE_DIRS}
-    )
-include_directories(SYSTEM
-    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
-    ${LLXML_SYSTEM_INCLUDE_DIRS}
-    )
 
 set(login_SOURCE_FILES
     lllogin.cpp
@@ -31,9 +17,6 @@ set(login_HEADER_FILES
     lllogin.h
     )
 
-set_source_files_properties(${login_HEADER_FILES}
-                            PROPERTIES HEADER_FILE_ONLY TRUE)
-
 list(APPEND 
     login_SOURCE_FILES 
     ${login_HEADER_FILES} 
@@ -42,17 +25,14 @@ list(APPEND
 add_library(lllogin 
             ${login_SOURCE_FILES}
             )
+target_include_directories( lllogin  INTERFACE   ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(lllogin
-    ${LLMESSAGE_LIBRARIES}
-    ${LLCOREHTTP_LIBRARIES}
-    ${LLCOMMON_LIBRARIES}
-    ${LLMATH_LIBRARIES}
-    ${LLXML_LIBRARIES}
-    ${BOOST_THREAD_LIBRARY}
-    ${BOOST_FIBER_LIBRARY}
-    ${BOOST_CONTEXT_LIBRARY}
-    ${BOOST_SYSTEM_LIBRARY}
+        llmessage
+        llcorehttp
+        llcommon
+        llmath
+        llxml
     )
 
 if(LL_TESTS)
@@ -62,7 +42,7 @@ if(LL_TESTS)
   set_source_files_properties(
     lllogin.cpp
     PROPERTIES
-    LL_TEST_ADDITIONAL_LIBRARIES "${LLMESSAGE_LIBRARIES};${LLCOREHTTP_LIBRARIES};${LLCOMMON_LIBRARIES};${BOOST_FIBER_LIBRARY};${BOOST_CONTEXT_LIBRARY};${BOOST_THREAD_LIBRARY};${BOOST_SYSTEM_LIBRARY}"
+    LL_TEST_ADDITIONAL_LIBRARIES llmessage llcorehttp llcommon
     )
 
   LL_ADD_PROJECT_UNIT_TESTS(lllogin "${lllogin_TEST_SOURCE_FILES}")
diff --git a/scripts/packages-formatter.py b/scripts/packages-formatter.py
index dafa0bf53b7bb687ce88c46416ba6d589849cdae..5d31702e7668de95c2cb81b7ce3e47bcea6c2374 100755
--- a/scripts/packages-formatter.py
+++ b/scripts/packages-formatter.py
@@ -34,6 +34,7 @@
 parser = argparse.ArgumentParser(description='Format dependency version and copyright information for the viewer About box content')
 parser.add_argument('channel', help='viewer channel name')
 parser.add_argument('version', help='viewer version number')
+parser.add_argument('install_dir', help="install dir of packages")
 args = parser.parse_args()
 
 _autobuild=os.getenv('AUTOBUILD', 'autobuild')
@@ -74,8 +75,8 @@ def add_info(key, pkg, lines):
     else:
         dups[key].add(pkg)
 
-versions=autobuild('install', '--versions')
-copyrights=autobuild('install', '--copyrights')
+versions=autobuild('install', '--versions', '--install-dir', args.install_dir)
+copyrights=autobuild('install', '--copyrights', '--install-dir', args.install_dir)
 viewer_copyright = copyrights.readline() # first line is the copyright for the viewer itself
 
 # Two different autobuild outputs, but we treat them essentially the same way: