From cfa38d82790664fe638a5edf0bdbfba9dfc42bb0 Mon Sep 17 00:00:00 2001
From: Nelson Ferreira <nelson.ferreira@ieee.org>
Date: Mon, 2 Jan 2012 17:45:22 -0500
Subject: [PATCH] Fix detection of MacOS X native provided libpng

	* m4/sxe-mm.m4 (_SXE_MM_CHECK_PNG_VERSION): Use the previously
	detected PNG LDFLAGS, CFLAGS and LIBS when determining version.

Signed-off-by: Nelson Ferreira <nelson.ferreira@ieee.org>
---
 m4/sxe-mm.m4 | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/m4/sxe-mm.m4 b/m4/sxe-mm.m4
index a96b1a9..cc67a7f 100644
--- a/m4/sxe-mm.m4
+++ b/m4/sxe-mm.m4
@@ -186,8 +186,9 @@ AC_DEFUN([_SXE_MM_CHECK_PNG_VERSION], [dnl
 	SXE_MSG_CHECKING([for workable png version information])
 
 	SXE_DUMP_LIBS
-	LDFLAGS="$LDFLAGS $PNG_LDFLAGS"
-	LIBS="$LIBS $PNG_LIBS"
+	CPPFLAGS="$PNG_CPPFLAGS"
+	LDFLAGS="$PNG_LDFLAGS"
+	LIBS="$PNG_LIBS"
 	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #if defined HAVE_PNG_H
 # include <png.h>
-- 
2.25.1