From 09b61ad7f36d88ae31f2b856eb527417e23354eb Mon Sep 17 00:00:00 2001
From: Matthew Hoops <clone2727@gmail.com>
Date: Sun, 20 Jan 2013 13:45:44 -0500
Subject: [PATCH] BUILD: Fix boost detection on MinGW

---
 m4/boost.m4 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/m4/boost.m4 b/m4/boost.m4
index 402b9ec2a8..f8fee15dc7 100644
--- a/m4/boost.m4
+++ b/m4/boost.m4
@@ -954,7 +954,10 @@ AC_LANG_POP([C++])dnl
 # -----------------------------
 # Internal helper for _BOOST_FIND_COMPILER_TAG.
 m4_define([_BOOST_gcc_test],
-["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
+["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC \
+     && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
+         || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw$1$2" \
+"defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
 
 
 # _BOOST_FIND_COMPILER_TAG()