[FFmpeg-devel] [PATCH] lavc/pthread: do not re-define _GNU_SOURCE if already defined.

Clément Bœsch ubitux at gmail.com
Mon Dec 24 08:14:01 CET 2012

On Mon, Dec 24, 2012 at 08:03:08AM +0100, Reimar Döffinger wrote:
> On 23 Dec 2012, at 22:51, Clément Bœsch <ubitux at gmail.com> wrote:
> > 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
> Nothing against the patch, but:
> I was told SDL fixed that, it is a seriously bad idea for them to have that there.
> If this still happens with recent SDL versions, IMHO it should be reported as a bug.

[/tmp/SDL-1.2.15]☭ grep D_GNU_SOURCE configure.in

Doesn't look like to be fixed…

Clément B.
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