From 7dd63d08d64a3343830eef49e878c4f8fec6e594 Mon Sep 17 00:00:00 2001
From: Antony Polukhin <antoshkka@gmail.com>
Date: Mon, 5 Dec 2011 16:17:09 +0000
Subject: [PATCH] Fixes #6159 (compilation on platforms without cwchar)

[SVN r75812]
---
 include/boost/lexical_cast.hpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/boost/lexical_cast.hpp b/include/boost/lexical_cast.hpp
index 3d65297..4cfa298 100644
--- a/include/boost/lexical_cast.hpp
+++ b/include/boost/lexical_cast.hpp
@@ -17,7 +17,7 @@
 //        enhanced with contributions from Terje Slettebo,
 //        with additional fixes and suggestions from Gennaro Prota,
 //        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
-//        Alexander Nasonov, Antony Polukhin and other Boosters
+//        Alexander Nasonov, Antony Polukhin, Justin Viiret and other Boosters
 // when:  November 2000, March 2003, June 2005, June 2006, March 2011
 
 #include <climits>
@@ -47,8 +47,9 @@
 #include <boost/detail/lcast_precision.hpp>
 #include <boost/detail/workaround.hpp>
 #include <boost/container/container_fwd.hpp>
-#include <cwchar>
-
+#ifndef BOOST_NO_CWCHAR
+#   include <cwchar>
+#endif
 
 #ifndef BOOST_NO_STD_LOCALE
 #   include <locale>