diff --git a/indra/cmake/LLAddBuildTest.cmake b/indra/cmake/LLAddBuildTest.cmake
index aa77bbac65d1a9f4470aa15d65f9fb4981c3f8b3..013cc5109f34c958aab39147ac1b4ee79ef9b587 100644
--- a/indra/cmake/LLAddBuildTest.cmake
+++ b/indra/cmake/LLAddBuildTest.cmake
@@ -123,7 +123,7 @@ MACRO(LL_ADD_PROJECT_UNIT_TESTS project sources)
     IF(WINDOWS)
       set(LD_LIBRARY_PATH ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR})
     ELSE(WINDOWS)
-      set(LD_LIBRARY_PATH ${ARCH_PREBUILT_DIRS}:/usr/lib)
+      set(LD_LIBRARY_PATH ${ARCH_PREBUILT_DIRS}:${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}:/usr/lib)
     ENDIF(WINDOWS)
 
     IF(LL_TEST_VERBOSE)
diff --git a/indra/cmake/Linking.cmake b/indra/cmake/Linking.cmake
index 578edf998947a5c54b48c92a2a2ca1b46220a179..30b3cc9994b012808f70ae51abbe025cb9a57338 100644
--- a/indra/cmake/Linking.cmake
+++ b/indra/cmake/Linking.cmake
@@ -14,6 +14,7 @@ if (NOT STANDALONE)
     endif (VIEWER)
     set(ARCH_PREBUILT_DIRS_RELEASE ${ARCH_PREBUILT_DIRS})
     set(ARCH_PREBUILT_DIRS_DEBUG ${ARCH_PREBUILT_DIRS})
+    set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs CACHE FILEPATH "Location of staged .sos")
   elseif (DARWIN)
     set(ARCH_PREBUILT_DIRS_RELEASE ${LIBS_PREBUILT_DIR}/${LL_ARCH_DIR}/lib_release)
     set(ARCH_PREBUILT_DIRS ${ARCH_PREBUILT_DIRS_RELEASE})
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index c46e2583f11e5912ddc8fac4b7a3b254d893e22f..2ecd4ee5d48757f7a181b28f6da98c8fe38bf3df 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -245,6 +245,20 @@ if(LLCOMMON_LINK_SHARED)
         # Also this directory is shared with RunBuildTest.cmake, y'know, for the tests.
         set_target_properties(llcommon PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${SHARED_LIB_STAGING_DIR})
     endif(SHARED_LIB_STAGING_DIR)
+
+    get_target_property(LLCOMMON_PATH llcommon LOCATION)
+    get_filename_component(LLCOMMON_FILE ${LLCOMMON_PATH} NAME)
+    add_custom_command(
+        TARGET llcommon POST_BUILD
+        COMMAND ${CMAKE_COMMAND}
+        ARGS
+          -E
+          copy_if_different
+          ${LLCOMMON_FILE}
+          ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/${LLCOMMON_FILE}
+        COMMENT "Copying llcommon to the staging folder."
+        )
+
 else(LLCOMMON_LINK_SHARED)
     add_library (llcommon ${llcommon_SOURCE_FILES})
 endif(LLCOMMON_LINK_SHARED)
@@ -263,6 +277,7 @@ target_link_libraries(
 
 add_dependencies(llcommon stage_third_party_libs)
 
+
 include(LLAddBuildTest)
 SET(llcommon_TEST_SOURCE_FILES
   # WARNING: Please don't write tests against LLCommon or LLMath until this issue is resolved: https://jira.lindenlab.com/jira/browse/DEV-29456
diff --git a/indra/llcommon/llapp.h b/indra/llcommon/llapp.h
index cc60ba0b80984a6776199f0a7dcb39dabe05fd7f..35f6f7028dd877f9f6ebfe48aec710b3ddcdd3a2 100644
--- a/indra/llcommon/llapp.h
+++ b/indra/llcommon/llapp.h
@@ -61,7 +61,7 @@ class LLChildInfo
 };
 #endif
 
-class LLApp
+class LL_COMMON_API LLApp
 {
 	friend class LLErrorThread;
 public:
diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h
index f968eabc181786096eb6b3baa290de11ae7ec08c..0898aeec470e26e02717b8dddf03352f6e8c2373 100644
--- a/indra/llcommon/llapr.h
+++ b/indra/llcommon/llapr.h
@@ -167,8 +167,8 @@ template <typename Type> class LLAtomic32
 	apr_uint32_t mData;
 };
 
-typedef LL_COMMON_API LLAtomic32<U32> LLAtomicU32;
-typedef LL_COMMON_API LLAtomic32<S32> LLAtomicS32;
+typedef LLAtomic32<U32> LLAtomicU32;
+typedef LLAtomic32<S32> LLAtomicS32;
 
 // File IO convenience functions.
 // Returns NULL if the file fails to openm sets *sizep to file size of not NULL
diff --git a/indra/llcommon/llerror.h b/indra/llcommon/llerror.h
index 6ccdf2174b0e25d27e6697bdd7608070c551f0bc..4f68fb9f769e571f6f30a336422990dd90a19641 100644
--- a/indra/llcommon/llerror.h
+++ b/indra/llcommon/llerror.h
@@ -129,7 +129,7 @@ namespace LLError
 		They are not intended for general use.
 	*/
 	
-	class LL_COMMON_API CallSite;
+	class CallSite;
 	
 	class LL_COMMON_API Log
 	{
diff --git a/indra/llcommon/llevent.h b/indra/llcommon/llevent.h
index 192cb84fea3e648abd533f507d3b83da165f5c1f..0ea7cf4ae83a1a3f07c3be770a8cbf2fda282bb3 100644
--- a/indra/llcommon/llevent.h
+++ b/indra/llcommon/llevent.h
@@ -41,10 +41,10 @@
 namespace LLOldEvents
 {
 
-class LL_COMMON_API LLEventListener;
-class LL_COMMON_API LLEvent;
-class LL_COMMON_API LLEventDispatcher;
-class LL_COMMON_API LLObservable;
+class LLEventListener;
+class LLEvent;
+class LLEventDispatcher;
+class LLObservable;
 
 // Abstract event. All events derive from LLEvent
 class LL_COMMON_API LLEvent : public LLThreadSafeRefCount
@@ -104,7 +104,7 @@ class LL_COMMON_API LLSimpleListener : public LLEventListener
 	std::vector<LLEventDispatcher *> mDispatchers;
 };
 
-class LL_COMMON_API LLObservable; // defined below
+class LLObservable; // defined below
 
 // A structure which stores a Listener and its metadata
 struct LLListenerEntry
diff --git a/indra/llcommon/llevents.h b/indra/llcommon/llevents.h
index 8ebffc008fc75ad50496ef6014dadb98231dd317..6df418fe5a53d6ef66d3445dc5df7553b4e1780f 100644
--- a/indra/llcommon/llevents.h
+++ b/indra/llcommon/llevents.h
@@ -172,7 +172,7 @@ class LL_COMMON_API LLListenerOrPumpName
 /*****************************************************************************
 *   LLEventPumps
 *****************************************************************************/
-class LL_COMMON_API LLEventPump;
+class LLEventPump;
 
 /**
  * LLEventPumps is a Singleton manager through which one typically accesses
diff --git a/indra/llcommon/lllog.h b/indra/llcommon/lllog.h
index b0ec570c01839466045fcdafb7f7fa6941ce09ad..4b6777bb9c7fa2fea2a175a64b0b5e3dbac49af6 100644
--- a/indra/llcommon/lllog.h
+++ b/indra/llcommon/lllog.h
@@ -39,7 +39,7 @@
 
 class LLLogImpl;
 class LLApp;
-class LL_COMMON_API LLSD;
+class LLSD;
 
 class LL_COMMON_API LLLog
 {
diff --git a/indra/llcommon/llmetrics.h b/indra/llcommon/llmetrics.h
index 11e10a5a2e8c17ca38a4627d301f2845f7db0e0d..f6f49eb4562b2f70ced98d14ffd0f9703f86aa34 100644
--- a/indra/llcommon/llmetrics.h
+++ b/indra/llcommon/llmetrics.h
@@ -36,7 +36,7 @@
 #define LL_LLMETRICS_H
 
 class LLMetricsImpl;
-class LL_COMMON_API LLSD;
+class LLSD;
 
 class LL_COMMON_API LLMetrics
 {
diff --git a/indra/llcommon/llpreprocessor.h b/indra/llcommon/llpreprocessor.h
index ed6ca9a25fb433306d205b39cd2a7d5dbf49521f..671e85b16f02cb32f6941dfc138fc80f5175da01 100644
--- a/indra/llcommon/llpreprocessor.h
+++ b/indra/llcommon/llpreprocessor.h
@@ -138,12 +138,14 @@
 #if LL_WINDOWS
 #define LL_DLLEXPORT __declspec(dllexport)
 #define LL_DLLIMPORT __declspec(dllimport)
+#elif LL_LINUX
+#define LL_DLLEXPORT __attribute__ ((visibility("default")))
+#define LL_DLLIMPORT
 #else
 #define LL_DLLEXPORT
 #define LL_DLLIMPORT
 #endif // LL_WINDOWS
 
-
 #if LL_COMMON_LINK_SHARED
 # if LL_COMMON_BUILD
 #   define LL_COMMON_API LL_DLLEXPORT
diff --git a/indra/llcommon/llrun.h b/indra/llcommon/llrun.h
index afe65fd734ebadd375bcdf6c548ed66134232c7b..1fc9925df9ca15c447c9d03bb29b31061d559b00 100644
--- a/indra/llcommon/llrun.h
+++ b/indra/llcommon/llrun.h
@@ -38,7 +38,7 @@
 #include <vector>
 #include <boost/shared_ptr.hpp>
 
-class LL_COMMON_API LLRunnable;
+class LLRunnable;
 
 /** 
  * @class LLRunner
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h
index 8cb459d81b0519b08098017dac5146d69749ef9f..6a6c396687000edcfc7601ff2ff2e7cce7aeb287 100644
--- a/indra/llcommon/llsdutil.h
+++ b/indra/llcommon/llsdutil.h
@@ -35,7 +35,7 @@
 #ifndef LL_LLSDUTIL_H
 #define LL_LLSDUTIL_H
 
-class LL_COMMON_API LLSD;
+class LLSD;
 
 // U32
 LL_COMMON_API LLSD ll_sd_from_U32(const U32);
diff --git a/indra/llcommon/llstat.h b/indra/llcommon/llstat.h
index 5d77215bebbdd2006a6301e36dbff96847043c1d..64ea8e5b40c8e2ee7febd5a682236ac7b1c5bc36 100644
--- a/indra/llcommon/llstat.h
+++ b/indra/llcommon/llstat.h
@@ -40,7 +40,7 @@
 #include "llframetimer.h"
 #include "llfile.h"
 
-class	LL_COMMON_API LLSD;
+class	LLSD;
 
 // Set this if longer stats are needed
 #define ENABLE_LONG_TIME_STATS	0
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index eb36dafee37a2ce44a42b2896c6155052bea10e0..24a8d49a54c2909f0900851ebc5c275e693cca5d 100644
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -345,9 +345,9 @@ class LLStringUtilBase
 template<class T> std::basic_string<T> LLStringUtilBase<T>::null;
 template<class T> std::string LLStringUtilBase<T>::sLocale;
 
-typedef LL_COMMON_API LLStringUtilBase<char> LLStringUtil;
-typedef LL_COMMON_API LLStringUtilBase<llwchar> LLWStringUtil;
-typedef LL_COMMON_API std::basic_string<llwchar> LLWString;
+typedef LLStringUtilBase<char> LLStringUtil;
+typedef LLStringUtilBase<llwchar> LLWStringUtil;
+typedef std::basic_string<llwchar> LLWString;
 
 //@ Use this where we want to disallow input in the form of "foo"
 //  This is used to catch places where english text is embedded in the code
@@ -419,7 +419,7 @@ LL_COMMON_API std::string rawstr_to_utf8(const std::string& raw);
 //
 // We should never use UTF16 except when communicating with Win32!
 //
-typedef LL_COMMON_API std::basic_string<U16> llutf16string;
+typedef std::basic_string<U16> llutf16string;
 
 LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str, S32 len);
 LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str);
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h
index e6bf95aaa962e5155d56042251cda60319668aa6..c3d7650bd9b2d101ddb117c5b1fa679665f17f75 100644
--- a/indra/llcommon/llthread.h
+++ b/indra/llcommon/llthread.h
@@ -38,9 +38,9 @@
 
 #include "apr_thread_cond.h"
 
-class LL_COMMON_API LLThread;
-class LL_COMMON_API LLMutex;
-class LL_COMMON_API LLCondition;
+class LLThread;
+class LLMutex;
+class LLCondition;
 
 class LL_COMMON_API LLThread
 {
diff --git a/indra/llcommon/lluri.h b/indra/llcommon/lluri.h
index 33fd88b4979176a58e3068a31ee326347509aa19..eb5c5203eb6f7c7b55a9e4cf5e669b4f85db9f0d 100644
--- a/indra/llcommon/lluri.h
+++ b/indra/llcommon/lluri.h
@@ -37,9 +37,9 @@
 
 #include <string>
 
-class LL_COMMON_API LLSD;
-class LL_COMMON_API LLUUID;
-class LL_COMMON_API LLApp;
+class LLSD;
+class LLUUID;
+class LLApp;
 
 /** 
  *
diff --git a/indra/llcommon/metaclass.h b/indra/llcommon/metaclass.h
index 8b93e0d6d59e8a112b7a06b3da3451b45482ce04..f38bcd2d57c8058c49668552113b29162c97f889 100644
--- a/indra/llcommon/metaclass.h
+++ b/indra/llcommon/metaclass.h
@@ -40,9 +40,9 @@
 
 #include "stdtypes.h"
 
-class LL_COMMON_API LLReflective;
-class LL_COMMON_API LLMetaProperty;
-class LL_COMMON_API LLMetaMethod;
+class LLReflective;
+class LLMetaProperty;
+class LLMetaMethod;
 class LL_COMMON_API LLMetaClass
 {
 public:
diff --git a/indra/llcommon/metaproperty.h b/indra/llcommon/metaproperty.h
index 96e1b314a4321094eb6ff4507045cf9e4edbc339..6c016c56ddce9ebb8dc803aa63067d7c969893e6 100644
--- a/indra/llcommon/metaproperty.h
+++ b/indra/llcommon/metaproperty.h
@@ -39,8 +39,8 @@
 #include "llsd.h"
 #include "reflective.h"
 
-class LL_COMMON_API LLMetaClass;
-class LL_COMMON_API LLReflective;
+class LLMetaClass;
+class LLReflective;
 class LL_COMMON_API LLMetaProperty
 {
 public:
diff --git a/indra/llcommon/reflective.h b/indra/llcommon/reflective.h
index 541712538bed6687d16709e045f412196818a5da..a13537681d7259adbf27e6bc497569f5fcaea7a6 100644
--- a/indra/llcommon/reflective.h
+++ b/indra/llcommon/reflective.h
@@ -35,7 +35,7 @@
 #ifndef LL_REFLECTIVE_H
 #define LL_REFLECTIVE_H
 
-class LL_COMMON_API LLMetaClass;
+class LLMetaClass;
 class LL_COMMON_API LLReflective
 {
 public: