From 0cf4fa578a62dc411e69c59aaaea2a0cf339d24b Mon Sep 17 00:00:00 2001
From: David Cole <david.cole@kitware.com>
Date: Thu, 25 Aug 2011 18:35:54 -0400
Subject: Xcode4: Requires more quoting of single quote char

Specifically in per-target and per-file compiler definition
string values.

The Preprocessor test now passes on Xcode 4 builds after
this commit.
---
 Source/cmGlobalXCodeGenerator.cxx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index fd9dacd..5f5c1c3 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -3409,7 +3409,14 @@ void cmGlobalXCodeGenerator::AppendFlag(std::string& flags,
     {
     if(*c == '\'')
       {
-      flags += "\\\\'";
+      if (this->XcodeVersion >= 40)
+        {
+        flags += "'\\\\''";
+        }
+      else
+        {
+        flags += "\\\\'";
+        }
       }
     else if(*c == '\\')
       {
-- 
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