From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Fri, 20 Jan 2012 13:10:10 +0000 (+0000)
Subject: Don't use -fvisibility-inlines-hidden on mingw to try to avoid a lot of
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ace4f2b0d4d542e3a835bcd4fad69205c5a73330;p=oota-llvm.git

Don't use -fvisibility-inlines-hidden on mingw to try to avoid a lot of
warnings from gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148539 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake
index 33d7d9abadd..229127d8320 100644
--- a/cmake/modules/HandleLLVMOptions.cmake
+++ b/cmake/modules/HandleLLVMOptions.cmake
@@ -89,11 +89,15 @@ if( LLVM_ENABLE_PIC )
       message(WARNING "-fPIC not supported.")
     endif()
 
-    check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG)
-    if( SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG )
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden")
-      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility-inlines-hidden")
-    endif()
+    if( WIN32 OR CYGWIN)
+      # MinGW warns if -fvisibility-inlines-hidden is used.
+    else()
+      check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG)
+      if( SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG )
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility-inlines-hidden")
+      endif()
+     endif()
   endif()
 endif()