As per summary, the SDL_FORCE_INLINE macro definition causes a hard error when compiling against the ANSI C standard (GCC -ansi flag).

Here's my test case:


#include <SDL.h>

int main(int argc, char *argv[])
{
    return 0;
}


gcc -ansi sdl2-test.c $(sdl2-config --cflags --libs)
In file included from /usr/include/SDL2/SDL_main.h:25:0,
                 from /usr/include/SDL2/SDL.h:65,
                 from sdl2-test.c:1:
/usr/include/SDL2/SDL_stdinc.h:258:18: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
 SDL_FORCE_INLINE void SDL_memset4(void *dst, int val, size_t dwords)
                  ^