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Fixed bug 3476 - round() needs _GNU_SOURCE on some old systems 

Ozkan Sezer

On systems with old glibc, such mine with glibc-2.8, the following warning
is issued and is fixed easily by defining _GNU_SOURCE:

/home/me/SDL2-2.0.5/src/video/x11/SDL_x11modes.c: In function 'CalculateXRandRRefreshRate':
/home/me/SDL2-2.0.5/src/video/x11/SDL_x11modes.c:263: warning: implicit declaration of function 'round'
/home/me/SDL2-2.0.5/src/video/x11/SDL_x11modes.c:263: warning: incompatible implicit declaration of built-in function 'round'
Sam Lantinga 2016-11-06 09:30:06 -08:00
parent 330e2952d8
commit d780031277
1 changed files with 4 additions and 0 deletions
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4
src/video/x11/SDL_x11modes.c
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@ -18,6 +18,10 @@
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_X11