* [RGL] src/ports/unix/gl_sdl.c
In file included from /usr/include/SDL/SDL_stdinc.h:28,
                 from /usr/include/SDL/SDL_main.h:26,
                 from /usr/include/SDL/SDL.h:28,
                 from src/ports/unix/../../ref_gl/gl_local.h:49,
                 from src/ports/unix/gl_sdl.c:26:
/usr/include/SDL/SDL_config.h:62:1: warning: "HAVE_STDLIB_H" redefined
In file included from /usr/include/jpeglib.h:28,
                 from src/ports/unix/../../ref_gl/gl_local.h:33,
                 from src/ports/unix/gl_sdl.c:26:
/usr/include/jconfig.h:12:1: warning: this is the location of the previous definition