Library sources compiled into doom.wasm (Emscripten 2.0.20 ports).
Download each archive from its URL and check it against the SHA-256 below before putting it into source.zip.

22f599bbe6065ff98fc565f2db6665da548181cf90982b89fdc42d83fbc6370b  ogg.zip
    https://github.com/emscripten-ports/ogg/archive/version_1.zip
b27caa51862008b109cb1375f039d76f622d60ea73ad308e1b5a09874569fe7e  vorbis.zip
    https://github.com/emscripten-ports/vorbis/archive/version_1.zip
2041be5adef5f671ab9d06de28ed60c9c1e8aaf5d4c11e02a6d900180b88a3e3  sdl2.zip
    https://github.com/emscripten-ports/SDL2/archive/version_23.zip
62944ae5509b861b3a995d89ba39629671ca0c5c4d306990d62a4709b5f5a8fe  sdl2_mixer.zip
    https://github.com/emscripten-ports/SDL2_mixer/archive/release-2.0.2.zip
fc8caf8ea278f91bff6eb4ac3074fee8657c428a2767bcebc2cf142f2b3e35bd  sdl2_net.zip
    https://github.com/emscripten-ports/SDL2_net/archive/version_2.zip
