编译中提示Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR) 或Could NOT find SDL2 (missing: SDL2_LIBRARY SDL2_INCLUDE_DIR) debian下操作: libpng, 输入: sudo apt-get install libpng-dev zlib, 输入: sudo apt-get install zlib1g-dev sdl2 sudo apt-get install libsdl2-dev