From a90d47890ffa4b029d40f6884d9bd6603297322b Mon Sep 17 00:00:00 2001
From: Konstantin Tokarev <annulen@yandex.ru>
Date: Thu, 1 Mar 2012 20:57:34 +0400
Subject: [PATCH] [OSX] Fixed undefined symbol when linking CMakeLib into
 shared library

---
 Source/cmSystemTools.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 15e689bc1..81ee5cea1 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -104,6 +104,9 @@ public:
 private:
   HANDLE handle_;
 };
+#elif defined(__APPLE__)
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
 #endif
 
 bool cmSystemTools::s_RunCommandHideConsole = false;