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Diffstat (limited to 'libavcodec/pthread.c')
-rw-r--r--libavcodec/pthread.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index ed6f0e1171..b55cccf200 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -32,7 +32,9 @@
#include "config.h"
#if HAVE_SCHED_GETAFFINITY
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
#include <sched.h>
#endif
#if HAVE_GETPROCESSAFFINITYMASK