From 79871c8e21f8f50cf4608c8012da48995337154d Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Thu, 10 Nov 2016 14:13:53 +0800
Subject: [PATCH] Update ax_boost_system.m4 to
 d48ec2210047bbf17702700811c3f16a5369e06c

---
 configure             | 2 +-
 m4/ax_boost_system.m4 | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 901f8426f..2c72cb291 100755
--- a/configure
+++ b/configure
@@ -5101,7 +5101,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 int
 main ()
 {
-boost::system::system_category
+boost::system::error_category *a = 0;
   ;
   return 0;
 }
diff --git a/m4/ax_boost_system.m4 b/m4/ax_boost_system.m4
index c4c45559d..43570a513 100644
--- a/m4/ax_boost_system.m4
+++ b/m4/ax_boost_system.m4
@@ -31,7 +31,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 17
+#serial 18
 
 AC_DEFUN([AX_BOOST_SYSTEM],
 [
@@ -68,9 +68,10 @@ AC_DEFUN([AX_BOOST_SYSTEM],
 					   ax_cv_boost_system,
         [AC_LANG_PUSH([C++])
 			 CXXFLAGS_SAVE=$CXXFLAGS
+			 CXXFLAGS=
 
 			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/system/error_code.hpp>]],
-                                   [[boost::system::system_category]])],
+				    [[boost::system::error_category *a = 0;]])],
                    ax_cv_boost_system=yes, ax_cv_boost_system=no)
 			 CXXFLAGS=$CXXFLAGS_SAVE
              AC_LANG_POP([C++])