CMake: Small improvement for MinGW This is currently a small patch we have in our Conan package for SDL https://github.com/bincrafters/community/blob/4dc894cc2c4df43aabf39c212aa0a31047d183e1/recipes/sdl2/all/conanfile.py#L184 Introduced in https://github.com/bincrafters/conan-sdl2/commit/9fb93a60446914da2a0fafc692cbd175c2d5db50