From 47c424226fce0d2a030b00965249d00528d21f62 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sun, 25 Jul 2010 22:33:04 +0000
Subject: [PATCH] Don't pass -export-dynamic to the linker on Cygwin and MinGW.
 These platforms accept the flag and do nothing but warn about it, cleverly
 bypassing our configure-based detection system. Patch by Takumi Nakamura!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109385 91177308-0d34-0410-b5e6-96231b3b80d8
---
 Makefile.rules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.rules b/Makefile.rules
index 44b8328f422..4b46e1c93ed 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -618,7 +618,7 @@ ifndef KEEP_SYMBOLS
 endif
 
 # Adjust linker flags for building an executable
-ifneq ($(HOST_OS),Darwin)
+ifneq ($(HOST_OS), $(filter $(HOST_OS), Darwin Cygwin MingW))
 ifdef TOOLNAME
   LD.Flags += $(RPATH) -Wl,'$$ORIGIN/../lib'
   ifdef EXAMPLE_TOOL