From f5ae2cd969ea4ab88109ece123c1c1f62624e8a2 Mon Sep 17 00:00:00 2001
From: arch3y <arch3y@archstrike.org>
Date: Fri, 15 Apr 2016 20:50:22 -0400
Subject: build: fix compilation warnings with _GNU_SOURCE

Fix the following warnings when building with glibc>=2.20:

proc.c:1:0: warning: "_GNU_SOURCE" redefined

ioops.c:1:0: warning: "_GNU_SOURCE" redefined

xmalloc.c:8:0: warning: "_GNU_SOURCE" redefined

Signed-off-by: Arch3y <arch3y@archstrike.org>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
 ioops.c   | 4 +++-
 proc.c    | 4 +++-
 xmalloc.c | 5 +++--
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/ioops.c b/ioops.c
index e2b9136..c1eeddc 100644
--- a/ioops.c
+++ b/ioops.c
@@ -1,4 +1,6 @@
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/proc.c b/proc.c
index b0c577c..76e3c93 100644
--- a/proc.c
+++ b/proc.c
@@ -1,4 +1,6 @@
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
 #include <sched.h>
 #include <sys/wait.h>
 #include <sys/types.h>
diff --git a/xmalloc.c b/xmalloc.c
index 75319ff..368e18d 100644
--- a/xmalloc.c
+++ b/xmalloc.c
@@ -4,8 +4,9 @@
  * Copyright 2014, 2015 Tobias Klauser
  * Subject to the GPL, version 2.
  */
-
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-- 
cgit v1.2.3-54-g00ecf