From 2b3e7b6f943d525cd02c13daacd596f17d100fd4 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 4 Jun 2014 15:51:08 -0400
Subject: [PATCH] VS: Fix vcxproj specification of empty output file extension

When a binary output file is to have no extension, the TargetExt
element in the vcxproj cannot be left empty because VS will choose
a default extension.  Instead use "." because the Windows filesystem
will treat that as an empty extension.
---
 Source/cmVisualStudio10TargetGenerator.cxx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 12f60eba0..453e98391 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -1277,6 +1277,12 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions()
 
       std::string ext =
         cmSystemTools::GetFilenameLastExtension(targetNameFull);
+      if(ext.empty())
+        {
+        // An empty TargetExt causes a default extension to be used.
+        // A single "." appears to be treated as an empty extension.
+        ext = ".";
+        }
       this->WritePlatformConfigTag("TargetExt", config->c_str(), 3);
       *this->BuildFileStream << cmVS10EscapeXML(ext) << "</TargetExt>\n";