From dc5535edbd6462ddc24b1eb2f0e93a3e7964cf9f Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Mon, 9 Jul 2012 11:11:53 +0000
Subject: [PATCH] Apply patch from #7056. Fixes #7056.

[SVN r79375]
---
 include/boost/config/compiler/visualc.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/config/compiler/visualc.hpp b/include/boost/config/compiler/visualc.hpp
index a2aea02d..e80deb14 100644
--- a/include/boost/config/compiler/visualc.hpp
+++ b/include/boost/config/compiler/visualc.hpp
@@ -233,6 +233,7 @@
 #  define BOOST_ABI_SUFFIX "boost/config/abi/msvc_suffix.hpp"
 #endif
 
+#ifndef BOOST_COMPILER
 // TODO:
 // these things are mostly bogus. 1200 means version 12.0 of the compiler. The 
 // artificial versions assigned to them only refer to the versions of some IDE
@@ -289,7 +290,8 @@
 #   endif
 # endif
 
-#define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
+#  define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
+#endif
 
 //
 // last known and checked version is 1700 (VC11, aka 2011):