From: Rico Tzschichholz <ricotz@ubuntu.com>
Date: Tue, 1 Sep 2015 10:45:11 +0200
Subject: mesa_dri2: Add missing include of config.h to define _GNU_SOURCE

Fix build with -Wimplicit-function-declaration while secure_getenv() is
guarded by __USE_GNU.

Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Tested-by: Stefan Dirsch <sndirsch@suse.de>
(cherry picked from commit 1cda354bdfd0c9ca107293b84b52f4464fdbedcc)
Signed-off-by: Damien Lanson <damien@kal-host.com>
---
 src/mesa_dri2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mesa_dri2.c b/src/mesa_dri2.c
index 51e8794..420ccee 100644
--- a/src/mesa_dri2.c
+++ b/src/mesa_dri2.c
@@ -33,6 +33,9 @@
  *   and José Hiram Soltren (jsoltren@nvidia.com)
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
 #define NEED_REPLIES
 #include <X11/Xlibint.h>