File OpenSceneGraph-2.4.0-new_cmake_rule.patch of Package osg

--- src/OpenThreads/pthreads/CMakeLists.txt
+++ src/OpenThreads/pthreads/CMakeLists.txt
@@ -26,8 +26,8 @@
   SET_TARGET_PROPERTIES(${LIB_NAME} PROPERTIES VERSION ${OPENTHREADS_VERSION} SOVERSION ${OPENTHREADS_SOVERSION})
 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_SAFE ${CMAKE_REQUIRED_LIBRARIES})
+SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 
 CHECK_FUNCTION_EXISTS(pthread_yield HAVE_PTHREAD_YIELD)
 IF(HAVE_PTHREAD_YIELD)
@@ -89,7 +89,7 @@
   ENDIF(HAVE_THREE_PARAM_SCHED_SETAFFINITY)
 ENDIF(HAVE_PTHREAD_SETAFFINITY_NP)
 
-SET(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_SAFE}")
+SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_SAFE})
 
 TARGET_LINK_LIBRARIES(${LIB_NAME}
 	${CMAKE_THREAD_LIBS_INIT}