From d780031277e898710094d1d90afee02e1586c97c Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Sun, 6 Nov 2016 09:30:06 -0800 Subject: [PATCH] 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' --- src/video/x11/SDL_x11modes.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/video/x11/SDL_x11modes.c b/src/video/x11/SDL_x11modes.c index 29307b3a6..b1e3ff478 100644 --- a/src/video/x11/SDL_x11modes.c +++ b/src/video/x11/SDL_x11modes.c @@ -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