+PKG_CHECK_MODULES([SDL], [sdl >= 1.2])
+PKG_CHECK_MODULES([SDL_IMAGE], [SDL_image >= 1.2],,
+ [SDL_IMAGE_LIBS="-lSDL_image"]) # <-- else
+PKG_CHECK_MODULES([SDL_MIXER], [SDL_mixer >= 1.2],,
+ [SDL_MIXER_LIBS="-lSDL_mixer"]) # <-- else
+# Make sure SDL_image was compiled with png support