diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -13,7 +13,7 @@
 include(CheckCompilerVersion)
 include(HandleLLVMStdlib)
 
-if( UNIX AND NOT (BEOS OR HAIKU) )
+if( UNIX AND NOT (APPLE OR BEOS OR HAIKU) )
   # Used by check_symbol_exists:
   list(APPEND CMAKE_REQUIRED_LIBRARIES "m")
 endif()