From Philip Lowman, post 1:

"Here is a collection of changes which should fix issues building the OSG with CMake 2.6.0 (along with some other changes)

CMakeLists.txt:
* Set CMP0003 to supress warning about linking against -lpthread (which is a
  non-absolute library location).  (CMake 2.6.x fix)
* Modified the WIN32_USE_MP and a couple of other Visual Studio specific flags
  to be in an IF(MSVC) block  (minor tweak to reduce exposing this stuff on MinGW builds)
* Includes my second set of glu tesselator autodetection changes that you
seemed to want but haven't committed yet.

src/OpenThreads/pthreads/CMakeLists.txt:
* Eliminates warning when compiling on Linux about spaces in link line (CMake 2.6.x fix)

CMakeModules/OsgMacroUtils.cmake:
* Tweaks to make the macros behave properly under CMake 2.6.0 (doesn't change behavior under CMake 2.4.x)

CMakeModules/Find3rdPartyDependencies.cmake:
* Adds the NO_DEFAULT_PATH option to all of the search options so that things in C:\Program Files\OpenSceneGraph aren't accidently picked up during configure time and instead only things in the "3rdParty" folder are discovered. (general bugfix)
"

post 2:
"Ok, hold the presses.  I just discovered that for some odd reason the osgdb_* plugins under Linux aren't getting put under the osgPlugins-2.5.0 folder.  Not exactly sure why this broke, the folder was there, just empty.  I'll have to look into it this evening."

post 3:

"Fixed, was caused by the switch to CMAKE_LIBRARY_OUTPUT_DIRECTORY and some code in osgPlugins/CMakeLists.txt that effectively overrides LIBRARY_OUTPUT_PATH on non-MSVC compilers to dump the plugins in the plugins folder.  I tweaked it to override CMAKE_LIBRARY_OUTPUT_DIRECTORY as well.  Seems to work fine."

src/OpenThreads/pthreads/CMakeLists.txt

@@ -11,15 +11,15 @@ SET(LIB_PUBLIC_HEADERS ${OpenThreads_PUBLIC_HEADERS})
 ADD_LIBRARY(${LIB_NAME}
     ${OPENTHREADS_USER_DEFINED_DYNAMIC_OR_STATIC}
     ${LIB_PUBLIC_HEADERS}
-	PThread.c++
-	PThreadBarrier.c++
-	PThreadBarrierPrivateData.h
-	PThreadCondition.c++
-	PThreadConditionPrivateData.h
-	PThreadMutex.c++
-	PThreadMutexPrivateData.h
-	PThreadPrivateData.h
-	../common/Version.cpp
+    PThread.c++
+    PThreadBarrier.c++
+    PThreadBarrierPrivateData.h
+    PThreadCondition.c++
+    PThreadConditionPrivateData.h
+    PThreadMutex.c++
+    PThreadMutexPrivateData.h
+    PThreadPrivateData.h
+    ../common/Version.cpp
 )
 
 IF(OPENTHREADS_SONAMES)
@@ -27,7 +27,7 @@ IF(OPENTHREADS_SONAMES)
 ENDIF(OPENTHREADS_SONAMES)
 
 SET(CMAKE_REQUIRED_LIBRARIES_SAFE "${CMAKE_REQUIRED_LIBRARIES}")
-SET(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}")
+SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 
 CHECK_FUNCTION_EXISTS(pthread_yield HAVE_PTHREAD_YIELD)
 IF(HAVE_PTHREAD_YIELD)
@@ -92,25 +92,25 @@ ENDIF(HAVE_PTHREAD_SETAFFINITY_NP)
 SET(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_SAFE}")
 
 TARGET_LINK_LIBRARIES(${LIB_NAME}
-	${CMAKE_THREAD_LIBS_INIT}
+    ${CMAKE_THREAD_LIBS_INIT}
 )
 
 # Since we're building different platforms binaries in 
 # their respective directories, we need to set the 
 # link directory so it can find this location.
 LINK_DIRECTORIES(
-	${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}
 )
 
 INSTALL(
-	TARGETS OpenThreads
-	ARCHIVE DESTINATION lib${LIB_POSTFIX}
-	LIBRARY DESTINATION lib${LIB_POSTFIX}
-	RUNTIME DESTINATION bin
+    TARGETS OpenThreads
+    ARCHIVE DESTINATION lib${LIB_POSTFIX}
+    LIBRARY DESTINATION lib${LIB_POSTFIX}
+    RUNTIME DESTINATION bin
 )
 INSTALL(
-	FILES ${OpenThreads_PUBLIC_HEADERS}
-	DESTINATION include/OpenThreads
+    FILES ${OpenThreads_PUBLIC_HEADERS}
+    DESTINATION include/OpenThreads
 )
 
 #commented out# INCLUDE(ModuleInstall OPTIONAL)

src/osgPlugins/CMakeLists.txt

@@ -9,6 +9,7 @@ PROJECT(OSG_PLUGINS_MASTER)
 
 IF(NOT MSVC)
     SET(LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH}/${OSG_PLUGINS}")
+    SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${OSG_PLUGINS}")
 ENDIF(NOT MSVC)
 
 SET(CMAKE_SHARED_MODULE_PREFIX ${OSG_PLUGIN_PREFIX})