diff --git a/autobuild.xml b/autobuild.xml
index e68c920a499186b59484c3517c13133472be2b8b..9a234b8b6423b2cdfd86a8766a7e17c7abbd3bd8 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -93,40 +93,6 @@
<key>version</key>
<string>2.0.5</string>
</map>
- <key>abseil-cpp</key>
- <map>
- <key>canonical_repo</key>
- <string>https://bitbucket.org/alchemyviewer/3p-abseil-src</string>
- <key>copyright</key>
- <string>Copyright 2018 The Abseil Authors.</string>
- <key>description</key>
- <string>Abseil Common Libraries</string>
- <key>license</key>
- <string>Apache 2.0</string>
- <key>license_file</key>
- <string>LICENSES/abseil-cpp.txt</string>
- <key>name</key>
- <string>abseil-cpp</string>
- <key>platforms</key>
- <map>
- <key>common</key>
- <map>
- <key>archive</key>
- <map>
- <key>hash</key>
- <string>1a593007e526383f15755ff6437f9fe0</string>
- <key>hash_algorithm</key>
- <string>md5</string>
- <key>url</key>
- <string>https://pkg.alchemyviewer.org/repository/autobuild-external/abseil-cpp/common/abseil_cpp-debac94.2-common-2.tar.bz2</string>
- </map>
- <key>name</key>
- <string>common</string>
- </map>
- </map>
- <key>version</key>
- <string>debac94.2</string>
- </map>
<key>apr_suite</key>
<map>
<key>copyright</key>
@@ -869,40 +835,6 @@
<key>version</key>
<string>2.00.03.192211300</string>
</map>
- <key>fmtlib-src</key>
- <map>
- <key>canonical_repo</key>
- <string>https://git.alchemyviewer.org/alchemy/thirdparty/3p-fmtlib-src</string>
- <key>copyright</key>
- <string>Copyright (c) 2012 - present, Victor Zverovich</string>
- <key>description</key>
- <string>A modern formatting library</string>
- <key>license</key>
- <string>MIT</string>
- <key>license_file</key>
- <string>LICENSES/fmtlib.txt</string>
- <key>name</key>
- <string>fmtlib-src</string>
- <key>platforms</key>
- <map>
- <key>common</key>
- <map>
- <key>archive</key>
- <map>
- <key>hash</key>
- <string>ba4c1e2ed2a1640823a932f2c4d88000</string>
- <key>hash_algorithm</key>
- <string>md5</string>
- <key>url</key>
- <string>https://pkg.alchemyviewer.org/repository/autobuild-external/fmtlib-src/common/fmtlib_src-6.0.0.1-common-1.tar.bz2</string>
- </map>
- <key>name</key>
- <string>common</string>
- </map>
- </map>
- <key>version</key>
- <string>6.0.0.1</string>
- </map>
<key>fontconfig</key>
<map>
<key>copyright</key>
diff --git a/indra/CMakeLists.txt b/indra/CMakeLists.txt
index 21201d0a441719c1447557d3551509737c4a632a..55c56759fb79add2390f522021614759f7fe99dd 100644
--- a/indra/CMakeLists.txt
+++ b/indra/CMakeLists.txt
@@ -19,19 +19,11 @@ endif (NOT CMAKE_BUILD_TYPE)
include(Variables)
include(00-Common)
include(BuildVersion)
-include(Abseil-CPP)
-include(FmtLib)
+include(CTest)
-# Dependencies
-add_subdirectory(${ABSEIL_SRC_DIR} ${ABSEIL_BIN_DIR})
-target_compile_options(absl_strings PRIVATE /wd4018)
-target_compile_options(absl_str_format_internal PRIVATE /wd4018)
-target_compile_options(absl_flags_usage_internal PRIVATE /wd4018)
-
-add_subdirectory(${FMT_SRC_DIR} ${FMT_BIN_DIR})
+add_subdirectory(deps)
add_subdirectory(cmake)
-
add_subdirectory(${LIBS_OPEN_PREFIX}llaudio)
add_subdirectory(${LIBS_OPEN_PREFIX}llappearance)
add_subdirectory(${LIBS_OPEN_PREFIX}llcharacter)
diff --git a/indra/cmake/Abseil-CPP.cmake b/indra/cmake/Abseil-CPP.cmake
deleted file mode 100644
index c7bb0f7630014832c8d53f4dba2ca5875bd82a28..0000000000000000000000000000000000000000
--- a/indra/cmake/Abseil-CPP.cmake
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- cmake -*-
-include(Prebuilt)
-
-set(BUILD_TESTING OFF)
-use_prebuilt_binary(abseil-cpp)
-set(ABSEIL_SRC_DIR ${LIBS_PREBUILT_DIR}/abseil-cpp)
-set(ABSEIL_BIN_DIR ${CMAKE_BINARY_DIR}/abseil-cpp)
-
diff --git a/indra/cmake/CMakeLists.txt b/indra/cmake/CMakeLists.txt
index bc077f8362c4d6ccea55ca00c3067276f7e36cb4..0186e75f226c4caa60237a3a161183a752cbc105 100644
--- a/indra/cmake/CMakeLists.txt
+++ b/indra/cmake/CMakeLists.txt
@@ -6,7 +6,6 @@ set(cmake_SOURCE_FILES
CMakeLists.txt
00-Common.cmake
- Abseil-CPP.cmake
APR.cmake
Audio.cmake
Boost.cmake
@@ -33,7 +32,6 @@ set(cmake_SOURCE_FILES
FindXmlRpcEpi.cmake
FindZLIB.cmake
FMODSTUDIO.cmake
- FmtLib.cmake
FreeType.cmake
GeneratePrecompiledHeader.cmake
GLM.cmake
diff --git a/indra/cmake/FmtLib.cmake b/indra/cmake/FmtLib.cmake
deleted file mode 100644
index 39916c9316e6b09b1ffc2debc1c255ac8fde9451..0000000000000000000000000000000000000000
--- a/indra/cmake/FmtLib.cmake
+++ /dev/null
@@ -1,6 +0,0 @@
-# -*- cmake -*-
-include(Prebuilt)
-
-use_prebuilt_binary(fmtlib-src)
-set(FMT_SRC_DIR ${LIBS_PREBUILT_DIR}/fmt)
-set(FMT_BIN_DIR ${CMAKE_BINARY_DIR}/fmt)
diff --git a/indra/cmake/Variables.cmake b/indra/cmake/Variables.cmake
index 41e21a971442b7c33578e69c40b0bba466a37b50..d455d059e55ca9abffa6044cc0e2ee09dcc763cb 100644
--- a/indra/cmake/Variables.cmake
+++ b/indra/cmake/Variables.cmake
@@ -37,6 +37,7 @@ set(VIEWER_PREFIX)
set(INTEGRATION_TESTS_PREFIX)
option(LL_TESTS "Build and run unit and integration tests (disable for build timing runs to reduce variation" OFF)
+option(BUILD_TESTING "Build test suite" OFF)
option(UNATTENDED "Disable use of uneeded tooling for automated builds" OFF)
# Compiler and toolchain options
diff --git a/indra/deps/CMakeLists.txt b/indra/deps/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d5ea5bf9e72e2077f1ac8c82629b57c48a43dd46
--- /dev/null
+++ b/indra/deps/CMakeLists.txt
@@ -0,0 +1,50 @@
+project(deps)
+
+include(FetchContent)
+
+set(CMAKE_FOLDER "Third Party")
+
+FetchContent_Declare(
+ Catch2
+ GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+ GIT_TAG v2.10.0
+ GIT_SHALLOW TRUE
+ GIT_PROGRESS TRUE
+ )
+FetchContent_Declare(
+ fmt
+ GIT_REPOSITORY https://github.com/fmtlib/fmt.git
+ GIT_TAG 7512a55aa3ae309587ca89668ef9ec4074a51a1f
+ GIT_SHALLOW TRUE
+ GIT_PROGRESS TRUE
+ )
+FetchContent_Declare(
+ absl
+ GIT_REPOSITORY https://github.com/abseil/abseil-cpp.git
+ GIT_TAG e9f9000c7c80993cb589d011616b7a8016e42f4a
+ GIT_SHALLOW TRUE
+ GIT_PROGRESS TRUE
+)
+
+# This is a hack because absl has dumb cmake
+set(OLD_BUILD_TEST ${BUILD_TESTING})
+set(BUILD_TESTING OFF)
+FetchContent_MakeAvailable(absl)
+set(BUILD_TESTING ${OLD_BUILD_TEST})
+
+# Supress warnings inside abseil under MSVC
+if(WINDOWS)
+ target_compile_options(absl_strings PRIVATE /wd4018)
+ target_compile_options(absl_str_format_internal PRIVATE /wd4018)
+ target_compile_options(absl_flags_usage_internal PRIVATE /wd4018)
+endif()
+
+
+if (BUILD_TESTING)
+ FetchContent_MakeAvailable(Catch2)
+endif()
+
+#Download the rest of the libraries
+FetchContent_MakeAvailable(fmt)
+
+set(CMAKE_FOLDER "")