ref: 770f3be74eeade974b9c5ccc36b85eaa8f02bf79
dir: /external/SDL2/README-SDL.txt/
Please distribute this file with the SDL runtime environment: The Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators. The Simple DirectMedia Layer library source code is available from: https://www.libsdl.org/ This library is distributed under the terms of the zlib license: http://www.zlib.net/zlib_license.html