From 7220df021be73cba540c72fcac86e59b84797375 Mon Sep 17 00:00:00 2001
From: David Cole <david.cole@kitware.com>
Date: Wed, 5 May 2010 14:30:21 -0400
Subject: [PATCH] Fix generation of .filters files for Visual Studio 2010
 generator.

Only generate .filters files if they are different than the last time
they were generated. This should prevent the unnecessary reloads
being triggered with Visual Studio 2010 builds.
---
 Source/cmVisualStudio10TargetGenerator.cxx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 4a8e161f3..9f6447317 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -441,6 +441,7 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
   path += this->Name;
   path += ".vcxproj.filters";
   cmGeneratedFileStream fout(path.c_str());
+  fout.SetCopyIfDifferent(true);
   char magic[] = {0xEF,0xBB, 0xBF};
   fout.write(magic, 3);
   cmGeneratedFileStream* save = this->BuildFileStream;
@@ -484,9 +485,14 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
   this->WriteString("</Project>\n", 0);
   // restore stream pointer
   this->BuildFileStream = save;
+
+  if (fout.Close())
+    {
+    this->GlobalGenerator->FileReplacedDuringGenerate(path);
+    }
 }
 
-void 
+void
 cmVisualStudio10TargetGenerator::
 WriteGroupSources(const char* name,
                   std::vector<cmSourceFile*> const& sources,