From a8871e7aea98ec9fd0b148259a2a3543cdd27118 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 26 Aug 2013 13:08:12 +1000
Subject: [PATCH] Use AC_USE_SYSTEM_EXTENSIONS

Defines _GNU_SOURCE for us.
http://www.gnu.org/software/autoconf/manual/autoconf-2.67/html_node/Posix-Variants.html

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 configure.ac                | 1 +
 libevdev/libevdev-uinput.c  | 1 -
 test/test-common-uinput.c   | 1 -
 test/test-libevdev-events.c | 1 -
 test/test-uinput.c          | 1 -
 5 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index f3a0bf8..78ab380 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,7 @@ AC_INIT([libevdev],
 
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
+AC_USE_SYSTEM_EXTENSIONS
 
 AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz])
 
diff --git a/libevdev/libevdev-uinput.c b/libevdev/libevdev-uinput.c
index 45a95fa..c07fe0c 100644
--- a/libevdev/libevdev-uinput.c
+++ b/libevdev/libevdev-uinput.c
@@ -20,7 +20,6 @@
  * OF THIS SOFTWARE.
  */
 
-#define _GNU_SOURCE
 #include <config.h>
 #include <fcntl.h>
 #include <poll.h>
diff --git a/test/test-common-uinput.c b/test/test-common-uinput.c
index 7e14087..167d727 100644
--- a/test/test-common-uinput.c
+++ b/test/test-common-uinput.c
@@ -20,7 +20,6 @@
  * OF THIS SOFTWARE.
  */
 
-#define _GNU_SOURCE
 #include <config.h>
 #include <fcntl.h>
 #include <poll.h>
diff --git a/test/test-libevdev-events.c b/test/test-libevdev-events.c
index 046f957..8b91692 100644
--- a/test/test-libevdev-events.c
+++ b/test/test-libevdev-events.c
@@ -20,7 +20,6 @@
  * OF THIS SOFTWARE.
  */
 
-#define _GNU_SOURCE
 #include <config.h>
 #include <linux/input.h>
 #include <errno.h>
diff --git a/test/test-uinput.c b/test/test-uinput.c
index 79f2229..a8f6cee 100644
--- a/test/test-uinput.c
+++ b/test/test-uinput.c
@@ -20,7 +20,6 @@
  * OF THIS SOFTWARE.
  */
 
-#define _GNU_SOURCE
 #include <config.h>
 #include <linux/input.h>
 #include <errno.h>
-- 
2.7.4