RetroArch is the reference frontend for the libretro API. Popular examples of implementations for this API includes videogame system emulators and game engines, but also more generalized 3D programs. These programs are instantiated as dynamic libraries. We refer to these as "libretro cores". libretro is an API that exposes generic audio/video/input callbacks. A frontend for libretro (such as RetroArch) handles video output, audio output, input and application lifecycle. A libretro core written in portable C or C++ can run seamlessly on many platforms with very little/no porting effort. While RetroArch is the reference frontend for libretro, several other projects have used the libretro interface to include support for emulators and/or game engines. libretro is completely open and free for anyone to use. RetroArch will require at least one of the libretro cores to play any games. To build debugging symbols for RetroArch use: DEBUG=yes ./RetroArch.SlackBuild If building debugging symbols asan can also be built: DEBUG=yes ASAN=yes ./RetroArch.SlackBuild Optional dependencies: ffmpeg jack-audio-connection-kit libsixel libxkbcommon miniupnpc nvidia-cg-toolkit OpenAL python3 qt5 SDL2 vulkansdk wayland Discord integration can be enabled with: DISCORD=yes Python3 support for shaders will need to be enabled with: PYTHON=yes ./RetroArch.SlackBuild If pulseaudio is installed it can be disabled during the build with: PULSE=no ./RetroArch.SlackBuild Alternatively pulseaudio can be disabled later in RetroArch's configuration. Note: Wayland support requires mesa to be rebuilt with Wayland support, using the following configure parameters. --with-egl-platforms=x11,drm,wayland Retroarch optionally supports using OpenGL ES 2 and OpenGL ES 3 instead of OpenGL which will require video card and driver support. This can be done by building RetroArch with: GLES=yes ./RetroArch.SlackBuild or GLES3=yes ./RetroArch.SlackBuild RetroArch optionally supports using Vulkan instead of OpenGL, this will require the vulkansdk from SBo and support for your video card and driver. For additional notes, please see README.SLACKWARE. For more information on RetroArch or libretro please visit this site. https://docs.libretro.com/