app-id: com.github.lindberghloader
runtime: org.freedesktop.Platform
runtime-version: &runtime-version '24.08'
sdk: org.freedesktop.Sdk

x-gl-versions: &gl-versions '24.08;1.4'
x-gl-merge-dirs: &gl-merge-dirs vulkan/icd.d;glvnd/egl_vendor.d;egl/egl_external_platform.d;OpenCL/vendors;lib/dri;lib/d3d;lib/gbm;vulkan/explicit_layer.d;vulkan/implicit_layer.d # Define GL merge dirs alias
x-i386-build-options: &i386-build-options
  libdir: /app/lib32
  env:
    CC: /usr/lib/sdk/toolchain-i386/bin/i686-unknown-linux-gnu-gcc
    CXX: /usr/lib/sdk/toolchain-i386/bin/i686-unknown-linux-gnu-g++
    LD: /usr/lib/sdk/toolchain-i386/bin/i686-unknown-linux-gnu-ld
    LDFLAGS: "-L/app/lib32"

command: lindbergh

# SDK extensions needed for building 32-bit components
sdk-extensions:
  - org.freedesktop.Sdk.Extension.toolchain-i386
  - org.freedesktop.Sdk.Compat.i386

finish-args:
  - --env=LD_LIBRARY_PATH=/app/lib32:$LD_LIBRARY_PATH
  - --env=PATH=/app/bin:/usr/bin
  - --allow=multiarch
  - --share=ipc
  - --share=network
  - --socket=x11
  - --socket=wayland
  - --device=all
  - --socket=pulseaudio
  - --filesystem=~/Games

# Runtime extensions automatically downloaded and installed with the app (For some reason does not work)
add-extensions:
  org.freedesktop.Platform.Compat.i386:
    directory: lib/i386-linux-gnu
    version: *runtime-version
    
  # 32-bit graphics driver extension
  org.freedesktop.Platform.GL32:
    directory: lib/i386-linux-gnu/GL
    versions: *gl-versions 
    subdirectories: true
    autodelete: false
    add-ld-path: lib
    merge-dirs: *gl-merge-dirs
    download-if: active-gl-driver
    enable-if: active-gl-driver
    autoprune-unless: active-gl-driver

modules:
  # Pre-built 32-bit library (if required)
  - name: libstdcxx5
    buildsystem: simple
    build-commands:
      - mkdir -p /app/lib32
      - install -Dm644 libstdc++.so.5 /app/lib32/libstdc++.so.5
    sources:
      - type: file
        path: ./assets/libstdc++.so.5

  # Build 32-bit libGLU
  - name: libGLU
    buildsystem: autotools
    config-opts:
      - --host=i686-unknown-linux-gnu
      - --prefix=/app
    build-options:
      arch:
        x86_64: *i386-build-options
    sources:
      - type: archive
        url: https://archive.mesa3d.org/glu/glu-9.0.2.tar.xz
        sha256: 6e7280ff585c6a1d9dfcdf2fca489251634b3377bfc33c29e4002466a38d02d4

  # Build 32-bit freeglut
  - name: freeglut
    buildsystem: cmake
    config-opts:
      - -DCMAKE_BUILD_TYPE=Release
      - -DCMAKE_INSTALL_PREFIX=/app
      - -DCMAKE_INSTALL_LIBDIR=/app/lib32
    sources:
      - type: archive
        url: https://downloads.sourceforge.net/freeglut/freeglut-3.2.2.tar.gz
        sha256: c5944a082df0bba96b5756dddb1f75d0cd72ce27b5395c6c1dde85c2ff297a50
    build-options:
      arch:
        x86_64: *i386-build-options

  # Build 32-bit libFAudio (dynamic)
  - name: libFAudio-Dynamic
    buildsystem: cmake-ninja
    config-opts:
      - -DCMAKE_BUILD_TYPE=Release
      - -DCMAKE_INSTALL_PREFIX=/app
      - -DBUILD_SDL3=off
      - -DCMAKE_INSTALL_LIBDIR=/app/lib32
    build-options:
      arch:
        x86_64: *i386-build-options
      env:
        CFLAGS: "-m32 -mstackrealign"
        CXXFLAGS: "-m32 -mstackrealign"
    sources:
      - type: git
        url: https://github.com/FNA-XNA/FAudio.git
        tag: "24.12"

  # Build 32-bit libXmu
  - name: libxmu
    buildsystem: autotools
    config-opts:
      - --prefix=/app
      - --with-shared
    sources:
      - type: archive
        url: https://xorg.freedesktop.org/releases/individual/lib/libXmu-1.2.1.tar.gz
        sha256: bf0902583dd1123856c11e0a5085bd3c6e9886fbbd44954464975fd7d52eb599
    build-options:
      arch:
        x86_64: *i386-build-options

  # Build 32-bit libmd
  - name: libmd
    buildsystem: autotools
    config-opts:
      - --prefix=/app
    sources:
      - type: archive
        url: https://archive.hadrons.org/software/libmd/libmd-1.1.0.tar.xz
        sha256: 1bd6aa42275313af3141c7cf2e5b964e8b1fd488025caf2f971f43b00776b332
    build-options:
      arch:
        x86_64: *i386-build-options

  # Build 32-bit libbsd
  - name: libbsd
    buildsystem: autotools
    config-opts:
      - --prefix=/app
    sources:
      - type: archive
        url: https://libbsd.freedesktop.org/releases/libbsd-0.12.2.tar.xz
        sha256: b88cc9163d0c652aaf39a99991d974ddba1c3a9711db8f1b5838af2a14731014
    build-options:
      arch:
        x86_64: *i386-build-options

  # Build 32-bit ncurses (very old version)
  - name: ncurses
    buildsystem: autotools
    config-opts:
      - --prefix=/app
      - --with-shared
      - --without-debug
    sources:
      - type: archive
        url: https://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.9.tar.gz
        sha256: 9046298fb440324c9d4135ecea7879ffed8546dd1b58e59430ea07a4633f563b
      - type: patch
        path: ./assets/ncurses-5.9.patch
    build-options:
      arch:
        x86_64: *i386-build-options
      env:
        CPPFLAGS: "-P"
        CXXFLAGS: "-std=c++14"

  # Install pre-built 32-bit Nvidia Cg Toolkit (old)
  - name: nvidia-cg-toolkit
    buildsystem: simple
    build-commands:
      - install -Dm755 usr/lib/libCg.so /app/lib32/libCg.so
      - install -Dm755 usr/lib/libCgGL.so /app/lib32/libCgGL.so
    sources:
      - type: archive
        url: http://developer.download.nvidia.com/cg/Cg_3.1/Cg-3.1_April2012_x86.tgz
        sha256: cef3591e436f528852db0e8c145d3842f920e0c89bcfb219c466797cb7b18879

  # Build 32-bit libsndio (dynamic)
  - name: libsndio-dynamic
    buildsystem: autotools
    config-opts:
      - --prefix=/app
      - --enable-dynamic
      - --enable-alsa
    sources:
      - type: archive
        url: https://www.sndio.org/sndio-1.10.0.tar.gz
        sha256: bebd3bfd01c50c9376cf3e7814b9379bed9e17d0393b5113b7eb7a3d0d038c54
    build-options:
      arch:
        x86_64: *i386-build-options

  # Build 32-bit libopenal (old version)
  - name: libopenal
    buildsystem: cmake
    config-opts:
      - -DCMAKE_INSTALL_PREFIX=/app
      - -DCMAKE_INSTALL_LIBDIR=/app/lib32
      - -DALSOFT_BACKEND_PULSEAUDIO=ON
      - -DALSOFT_BACKEND_ALSA=ON
      - -DALSOFT_BACKEND_JACK=OFF
      - -DALSOFT_BACKEND_SNDIO=ON
      - -DSOUNDIO_INCLUDE_DIR=/app/include
      - -DSOUNDIO_LIBRARY=/app/lib32/libsndio.so
    sources:
      - type: archive
        url: https://github.com/kcat/openal-soft/archive/refs/tags/openal-soft-1.17.2.tar.gz
        sha256: 11ea176f6cbf9763dbce0953dd77ab72d032b4ad95f07afffb91844abb174033
    build-options:
      arch:
        x86_64: *i386-build-options
      env:
        CFLAGS: "-m32 -mstackrealign"
        CXXFLAGS: "-m32 -std=c++14 -mstackrealign"

  # Build 32-bit OpenSSL (extremely old and insecure version)
  - name: openssl
    buildsystem: simple
    build-commands:
      - ./Configure --prefix=/app --openssldir=/app/etc/ssl shared 386 no-asm no-krb5 linux-pentium
      - make CC=/usr/lib/sdk/toolchain-i386/bin/i686-unknown-linux-gnu-gcc RANLIB=/usr/lib/sdk/toolchain-i386/bin/i686-unknown-linux-gnu-ranlib
      - install -d /app/lib32
      - mv libcrypto.so* /app/lib32/
      - mv libssl.so* /app/lib32/
    sources:
      - type: archive
        url: https://github.com/openssl/openssl/archive/refs/tags/OpenSSL_0_9_7.tar.gz
        sha256: 14e3a90f75994689e8c1bef098a97021f225a1a1623a7b8012079bd8b2eca1e8

  # Build 32-bit libpcsclite
  - name: libpcsclite
    buildsystem: meson
    config-opts:
      - -Dpolkit=false
      - -Dlibsystemd=false
    build-options:
      arch:
        x86_64: *i386-build-options
      env:
        CFLAGS: "-m32"
        CXXFLAGS: "-m32"
        LDFLAGS: "-m32 -L/app/lib32"
        PKG_CONFIG_PATH: "/app/lib32/pkgconfig:/usr/lib/i386-linux-gnu/pkgconfig:/usr/lib/sdk/toolchain-i386/lib/pkgconfig"
    sources:
      - type: archive
        url: https://pcsclite.apdu.fr/files/pcsc-lite-2.3.1.tar.xz
        sha256: a641d44d57affe1edd8365dd75307afc307e7eefb4e7ad839f6f146baa41ed56

  # Build the main application (lindbergh-loader)
  - name: lindbergh-loader
    buildsystem: simple
    build-commands:
      - export LD_LIBRARY_PATH=/app/lib32:$LD_LIBRARY_PATH
      - make -j$(nproc)
      - mkdir -p /app/lib/i386-linux-gnu
      - mkdir -p /app/lib/i386-linux-gnu/GL
      - install -Dm755 ./build/lindbergh /app/bin/
      - install -Dm755 ./build/lindbergh.so /app/lib32/
      - install -Dm755 ./build/libsegaapi.so /app/lib32/
      - install -Dm755 ./build/libkswapapi.so /app/lib32/
      - install -Dm755 ./build/libposixtime.so /app/lib32/
      - install -Dm755 ./libs/libCg.so /app/lib32/libCg2.so
      - ln -sf libposixtime.so /app/lib32/libposixtime.so.1
      - ln -sf libposixtime.so /app/lib32/libposixtime.so.2.4
      - ln -sf libopenal.so.1 /app/lib32/libopenal.so.0
      - ln -sf libkswapapi.so /app/lib32/libGLcore.so.1
      - ln -sf libkswapapi.so /app/lib32/libnvidia-tls.so.1
      - mv /app/lib/libopenal* /app/lib32/
    build-options:
      arch:
        x86_64: *i386-build-options
    sources:
      - type: dir
        path: ../..

  # Setup dynamic linker configuration
  - name: bundle-setup
    buildsystem: simple
    build-commands:
      - install -Dm644 -t /app/etc ld.so.conf
    sources:
      - type: file
        path: ./assets/ld.so.conf

  # Cleanup unnecessary files to reduce final flatpak size
  - name: cleanup
    buildsystem: simple
    build-commands:
      - find /app/lib32 -name '*.a' -type f -delete
      - find /app/lib32 -name '*.la' -type f -delete
      - find /app/bin -mindepth 1 ! -name "lindbergh" -exec rm -f {} \;
      - rm -rf /app/lib/pkgconfig /app/lib32/pkgconfig /app/share/pkgconfig
      - rm -rf /app/lib32/cmake /app/lib/debug /app/include /app/man /app/share /app/etc/bash_completion.d
      - rm -f /app/lib32/libmenu.so*
      - rm -f /app/lib32/libform.so*
      - rm -f /app/lib32/libpanel.so*
      - rm -f /app/lib32/libXmuu.so*
      - rm -f /app/lib32/libbsd.so*
      - rm -rf /app/lib/terminfo