From 6ccd0da0fe0186380c7ad9aa50128d3d3ab09794 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 17 Aug 2010 15:42:43 +0000
Subject: Fix failure of unittests/ExecutionEngine/JIT/MultiJITTest.cpp on
 cygwin when built with ENABLE_SHARED=1.  Patch by NAKAMURA Takumi!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111231 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/System/DynamicLibrary.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/System/DynamicLibrary.cpp b/lib/System/DynamicLibrary.cpp
index 6f6890c..660db49 100644
--- a/lib/System/DynamicLibrary.cpp
+++ b/lib/System/DynamicLibrary.cpp
@@ -70,6 +70,12 @@ bool DynamicLibrary::LoadLibraryPermanently(const char *Filename,
     if (ErrMsg) *ErrMsg = dlerror();
     return true;
   }
+#ifdef __CYGWIN__
+  // Cygwin searches symbols only in the main
+  // with the handle of dlopen(NULL, RTLD_GLOBAL).
+  if (Filename == NULL)
+    H = RTLD_DEFAULT;
+#endif
   if (OpenedHandles == 0)
     OpenedHandles = new std::vector<void *>();
   OpenedHandles->push_back(H);
-- 
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