From 47aa363f9f5544ae9bb692ccc31870810cec7342 Mon Sep 17 00:00:00 2001
From: Andrey Semashev <andrey.semashev@gmail.com>
Date: Sun, 1 Sep 2013 19:07:06 +0000
Subject: [PATCH] Added #pragma once in case if it speeds up compilation.

[SVN r85546]
---
 include/boost/config.hpp | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/include/boost/config.hpp b/include/boost/config.hpp
index f37585eb..6ec3645c 100644
--- a/include/boost/config.hpp
+++ b/include/boost/config.hpp
@@ -1,6 +1,6 @@
 //  Boost config.hpp configuration header file  ------------------------------//
 
-//  (C) Copyright John Maddock 2002. 
+//  (C) Copyright John Maddock 2002.
 //  Use, modification and distribution are subject to the 
 //  Boost Software License, Version 1.0. (See accompanying file 
 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -56,15 +56,8 @@
 // get config suffix code:
 #include <boost/config/suffix.hpp>
 
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
 #endif  // BOOST_CONFIG_HPP
-
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