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lavc/pthread: do not re-define _GNU_SOURCE if already defined.

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This fixes the following warning with GCC:
    libavcodec/pthread.c:35:0: warning: _GNU_SOURCE redefined [enabled by default]
    <command-line>::0: note: this is the location of the previous definition

The reason of the presence of this flag is:
    % pkg-config --cflags sdl
    -D_GNU_SOURCE=1 -D_REENTRANT -I/usr/include/SDL
This commit is contained in:
Clément Bœsch 2012-12-23 22:50:44 +01:00
parent 00ebac6dfd
commit 98dc25672f
1 changed files with 3 additions and 1 deletions
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4
libavcodec/pthread.c
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@ -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