From a47de028da2f8b259155246159fea9ffb3ff3446 Mon Sep 17 00:00:00 2001
From: Tristan Matthews <tristan.matthews@savoirfairelinux.com>
Date: Wed, 26 Nov 2014 17:09:43 -0500
Subject: [PATCH] configure: don't trash CXXFLAGS from environment

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 4cbebdab..752930f3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ AM_INIT_AUTOMAKE([foreign])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
-CXXFLAGS=-O3
+CXXFLAGS="${CXXFLAGS} -O3"
 
 AC_PROG_CC
 AC_PROG_CXX