[submodule "lib/SDL"] path = lib/SDL url = https://github.com/libsdl-org/SDL.git branch = release-2.28.x [submodule "lib/SDL_image"] path = lib/SDL_image url = https://github.com/libsdl-org/SDL_image.git branch = release-2.8.x [submodule "lib/libpng"] path = lib/libpng url = https://github.com/glennrp/libpng.git branch = libpng16