From 768b1b433caa266a1a9f642cff482e312c8c6fc2 Mon Sep 17 00:00:00 2001
From: orbea <ovariegata@yahoo.com>
Date: Sun, 26 Nov 2017 20:14:06 -0800
Subject: [PATCH] libretro-common: Silence redefined warning.

---
 libretro-common/file/nbio/nbio_linux.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libretro-common/file/nbio/nbio_linux.c b/libretro-common/file/nbio/nbio_linux.c
index 7b40551194..3395a2cef7 100644
--- a/libretro-common/file/nbio/nbio_linux.c
+++ b/libretro-common/file/nbio/nbio_linux.c
@@ -24,7 +24,9 @@
 
 #if defined(__linux__)
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>