Index: compiler-rt/trunk/lib/builtins/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/builtins/CMakeLists.txt
+++ compiler-rt/trunk/lib/builtins/CMakeLists.txt
@@ -154,7 +154,7 @@
     atomic_thread_fence.c)
 endif()
 
-if(NOT WIN32)
+if(NOT WIN32 OR MINGW)
   set(GENERIC_SOURCES
       ${GENERIC_SOURCES}
       emutls.c)