Retain linker flags specified on cmake command line.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183857 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/CMakeLists.txt b/CMakeLists.txt
index faecb0da07addaabb0aaf121299350e5f16eb54b..c5864af945a4ee6c507a1280f46fb7ad2184ced6 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -151,7 +151,7 @@ if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
 endif ()
 
 if (APPLE)
-  set(CMAKE_MODULE_LINKER_FLAGS "-Wl,-flat_namespace -Wl,-undefined -Wl,suppress")
+  set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-flat_namespace -Wl,-undefined -Wl,suppress")
 endif ()
 
 configure_file(