Symbol visibility is unsupported on cygwin too.

Patch by Jay Foad!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58520 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index 9750579f2c25369522cb42cc751e5e58da1aeb36..7186b22a4038e6c1c5129329e2d346d1d58dfc62 100644 (file)
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -17,7 +17,7 @@
 
 // The VISIBILITY_HIDDEN macro, used for marking classes with the GCC-specific
 // visibility("hidden") attribute.
-#if (__GNUC__ >= 4) && !defined(__MINGW32__)
+#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__)
 #define VISIBILITY_HIDDEN __attribute__ ((visibility("hidden")))
 #else
 #define VISIBILITY_HIDDEN