+CHECK_FUNCTION_EXISTS(mergesort HAVE_MERGESORT)
+
+#Check if __thread is defined
+exec_program("${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/buildtools/Cmake/test_prog/prog_thread_storage.c"
+ OUTPUT_VARIABLE HAVE_thread_storage_run)
+if(HAVE_thread_storage_run)
+ set(HAVE_THREAD_LOCAL_STORAGE 0)
+else(HAVE_thread_storage_run)
+ set(HAVE_THREAD_LOCAL_STORAGE 1)
+endif(HAVE_thread_storage_run)
+
+# Our usage of mmap is Linux-specific (flag MAP_ANONYMOUS), but kFreeBSD uses a GNU libc
+IF(NOT "${CMAKE_SYSTEM}" MATCHES "Linux" AND NOT "${CMAKE_SYSTEM}" MATCHES "kFreeBSD" AND NOT "${CMAKE_SYSTEM}" MATCHES "GNU")
+ SET(HAVE_MMAP 0)
+ message(STATUS "Warning: MMAP is thought as non functional on this architecture (${CMAKE_SYSTEM})")
+ENDIF(NOT "${CMAKE_SYSTEM}" MATCHES "Linux" AND NOT "${CMAKE_SYSTEM}" MATCHES "kFreeBSD" AND NOT "${CMAKE_SYSTEM}" MATCHES "GNU")