# Build environment for the Shockolate (System Shock) engine snapshot in
# engine/. Everything the engine build needs from the network - SDL2,
# SDL2_mixer, the fluidsynth-lite MIDI synth, and a General MIDI soundfont -
# is fetched and built once, here, at image-build time. Rebuild with
# ../build-image.sh whenever a version below changes.
#
# The resulting image needs no network access to compile engine/: the
# in-container build script (build-image/build-engine.sh) copies the
# prebuilt pieces below straight into engine/build_ext/, matching the paths
# engine/CMakeLists.txt's BUNDLED dependency mode expects.
FROM ubuntu:22.04

ARG SDL2_VERSION=2.0.9
ARG SDL2_MIXER_VERSION=2.0.4
# EtherTyper/fluidsynth-lite has no releases/tags; pin by commit so the image
# is reproducible instead of silently picking up upstream changes.
ARG FLUIDSYNTH_LITE_REF=c539a8d9270ba5a3f7d6e460606483fc2ab1eb61
# Soundfont used for MIDI music, matching what engine/build_deps.sh itself
# fetches (a free substitute for the Windows default GM soundfont).
ARG SOUNDFONT_URL=http://rancid.kapsi.fi/windows.sf2
# GLEW, for the Windows/MinGW cross-build only (engine/CMakeLists.txt's
# WIN32 branch - Windows' own opengl32.dll only exposes OpenGL 1.1, so
# anything newer needs GLEW's runtime extension loading; Linux instead
# gets modern prototypes straight from Mesa's headers, no loader needed -
# see engine/src/MacSrc/OpenGL.cc). Matches the version engine/'s own
# upstream Windows build script (build_win64.sh) used.
ARG GLEW_VERSION=2.1.0
# Gitea/GitHub Actions' JS-based actions (actions/checkout,
# actions/upload-artifact, ...) need a node binary in the container job's
# PATH - this image is otherwise pure C toolchain, so it isn't pulled in
# by anything else.
ARG NODE_VERSION=20.18.1

# Android layer, for the Quest APK build (Quest 2, 3, 3S, Pro - all
# arm64-v8a, see build-apk.sh). Same SDL2 major version as the desktop
# build above, but SDL2/SDL2_mixer are much newer releases here - unlike
# the desktop autotools build, Android needs their real CMake+NDK build
# support, which only landed in later releases. targetSdkVersion 29 (not
# compileSdk, which can and does stay newer) is deliberate: paired with
# requestLegacyExternalStorage in the manifest, it keeps /sdcard a plain,
# unrestricted shared folder instead of hitting Android 11+ scoped
# storage - this is keyed off the *app's* targetSdkVersion, not the
# device's own Android version, so it keeps working on newer Quest
# hardware/OS updates too, not just whatever's current today.
ARG ANDROID_SDL2_VERSION=2.28.5
ARG ANDROID_SDL2_MIXER_VERSION=2.8.0
ARG ANDROID_CMDLINE_TOOLS_VERSION=11076708
ARG ANDROID_PLATFORM_VERSION=29
# compileSdk in android/app/build.gradle - separate from the app's own
# targetSdkVersion (29, above): compileSdk is just which android.jar the
# app compiles against, and androidx.core needs a newer one than 29.
ARG ANDROID_COMPILE_SDK_VERSION=34
ARG ANDROID_BUILD_TOOLS_VERSION=34.0.0
ARG ANDROID_NDK_VERSION=26.1.10909125
ARG ANDROID_CMAKE_VERSION=3.22.1
# NDK 26 doesn't yet default to 16 KB-aligned ELF LOAD segments (that only
# became automatic in NDK 28+) - Google requires this for Play Store
# submissions targeting Android 15+ as of Nov 2025, and it's cheap/harmless
# to do regardless of Play Store status. Passed to every Android shared-lib
# CMake configure below, and to the engine's own build via
# android/app/build.gradle's externalNativeBuild.cmake.arguments.
ARG ANDROID_16KB_LDFLAGS="-Wl,-z,max-page-size=16384"
# GL4ES (https://github.com/ptitSeb/gl4es) - translates the engine's
# desktop-style immediate-mode OpenGL calls into real GLES/EGL calls, so
# engine/src/MacSrc/OpenGL.cc needs no immediate-mode rewrite on Android.
# Vendored directly into android/gl4es-src/ (currently tag v1.1.6, gl4es's
# latest release) rather than fetched at build time, same rationale as
# engine/: lets android/gl4es-patches/ instrument it directly (this is
# Android/GLES-only, with no desktop build depending on it, so unlike
# engine/ there's no shared tree to protect - see that patch's own comment
# for why this was needed, tracking down the OpenXR menu-quad texture bug).
# Re-vendoring a newer tag later: re-clone into android/gl4es-src/, then
# reapply/update the patches in android/gl4es-patches/.
# Unlike SDL2/SDL2_mixer/fluidsynth-lite/OpenXR below, gl4es is NOT
# prebuilt in this image - it's compiled from a scratch, patched copy as a
# CMake subdirectory of the engine's own native build (see
# build-image/prepare-android-project.sh and
# android/engine-patches/02-android-opengl-es.patch), so gl4es-patches/
# changes only need a normal Android Studio/gradlew rebuild, not a
# build-image rebuild.
# Khronos' own OpenXR loader (https://github.com/KhronosGroup/OpenXR-SDK) -
# the vendor-neutral loader, not Meta's redistributed copy, per this
# project's "favor OpenXR" rule (see README's Design principles). Only the
# loader is built (BUILD_LOADER=ON, everything else off) - the actual XR
# runtime implementation is resolved on-device by Horizon OS at load time,
# nothing else needs bundling. Verify this is still the latest release tag
# at https://github.com/KhronosGroup/OpenXR-SDK/releases when bumping.
ARG ANDROID_OPENXR_VERSION=1.1.42

ENV DEBIAN_FRONTEND=noninteractive

# build-essential/cmake/make: engine/ itself (CMake) and SDL2/SDL2_mixer
# (autotools).
# git: fetches fluidsynth-lite; also used by engine/CMakeLists.txt's own
# `git describe` version string (harmless no-op if engine/ isn't a repo).
# curl/ca-certificates: fetches SDL2/SDL2_mixer tarballs and the soundfont.
# pkg-config: SDL2_mixer's configure and engine/CMakeLists.txt's
# pkg_check_modules() calls.
# gosu: docker-entrypoint.sh drops from root to a HOST_UID/GID user so
# build output isn't left root-owned on the bind-mounted repo.
# libgl1-mesa-dev/libglx-dev/libxext-dev/libx11-dev/libxrandr-dev/libxi-dev/
# libxfixes-dev/libxss-dev/libxinerama-dev/libxcursor-dev: SDL2's video
# backend (X11 + GL).
# libogg-dev/libvorbis-dev: SDL2_mixer's OGG Vorbis music decoder.
# libasound2-dev: engine/CMakeLists.txt's optional native ALSA MIDI output.
# openssh-client: the CI workflow's `sftp` publish step.
# openjdk-17-jdk-headless: Gradle/AGP's own minimum JDK for the APK build.
# unzip: extracts the Android cmdline-tools zip below.
# mingw-w64: the x86_64-w64-mingw32-{gcc,g++,windres,ar,...} cross
# toolchain for the Windows desktop build (see the "Windows cross-compile"
# section below). Ubuntu ships both a win32-thread-model and a
# posix-thread-model variant behind update-alternatives; the default
# (win32) is fine here since nothing in engine/ uses std::thread.
# zip: `make package-win`'s Windows release archive - a CI job's own
# `make package` runs inside this image as its container (see
# .gitea/workflows/build.yml), so it needs to be baked in here, not just
# available on a local dev machine's own host (see README).
#
# All apt installs deliberately live in this one RUN, first, so editing
# anything below it (in particular the Android cross-compile steps, the
# newest and least settled part of this file) never invalidates Docker's
# build cache for this layer - and vice versa, adding a package here only
# ever costs a rebuild of the (slow) layers below it, not a re-download
# of packages that didn't change.
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential cmake make git curl ca-certificates pkg-config gosu \
        libgl1-mesa-dev libglx-dev libxext-dev libx11-dev libxrandr-dev \
        libxi-dev libxfixes-dev libxss-dev libxinerama-dev libxcursor-dev \
        libogg-dev libvorbis-dev libasound2-dev openssh-client \
        openjdk-17-jdk-headless unzip mingw-w64 zip \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /opt/prebuilt

# SDL2, built the same way engine/build_deps.sh builds it (BUNDLED mode),
# just at image-build time instead of every game build.
RUN curl -sSLO "https://www.libsdl.org/release/SDL2-${SDL2_VERSION}.tar.gz" \
    && tar xf "SDL2-${SDL2_VERSION}.tar.gz" \
    && cd "SDL2-${SDL2_VERSION}" \
    && ./configure --prefix=/opt/prebuilt/built_sdl \
    && make -j"$(nproc)" \
    && make install \
    && cd .. && rm -rf "SDL2-${SDL2_VERSION}" "SDL2-${SDL2_VERSION}.tar.gz"

# SDL2_mixer, linked against the SDL2 build above via SDL2_CONFIG - same as
# engine/build_deps.sh's build_sdl_mixer().
RUN curl -sSLO "https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-${SDL2_MIXER_VERSION}.tar.gz" \
    && tar xf "SDL2_mixer-${SDL2_MIXER_VERSION}.tar.gz" \
    && cd "SDL2_mixer-${SDL2_MIXER_VERSION}" \
    && SDL2_CONFIG=/opt/prebuilt/built_sdl/bin/sdl2-config \
        ./configure --prefix=/opt/prebuilt/built_sdl_mixer \
    && make -j"$(nproc)" \
    && make install \
    && cd .. && rm -rf "SDL2_mixer-${SDL2_MIXER_VERSION}" "SDL2_mixer-${SDL2_MIXER_VERSION}.tar.gz"

# fluidsynth-lite: the stripped-down FluidSynth fork engine/CMakeLists.txt's
# BUNDLED FluidSynth mode expects at build_ext/fluidsynth-lite. Built
# in-source (its own CMake setup expects that), forcing a shared library
# the same way engine/build_deps.sh's sed does.
RUN git clone https://github.com/EtherTyper/fluidsynth-lite.git \
    && cd fluidsynth-lite \
    && git checkout "${FLUIDSYNTH_LITE_REF}" \
    && sed -i 's/DLL"\ off/DLL"\ on/' CMakeLists.txt \
    && cmake . \
    && cmake --build . -j"$(nproc)" \
    && rm -rf .git

# General MIDI soundfont for fluidsynth playback - engine/build_deps.sh
# fetches the same file and drops it into engine/res/. Shared by both the
# Linux and Windows builds below.
RUN mkdir -p soundfont \
    && curl -sSL -o soundfont/default.sf2 "${SOUNDFONT_URL}"

# CMake toolchain file for the Windows/MinGW cross-build below, reused at
# container-run time by build-image/build-engine-win.sh (see
# MINGW_TOOLCHAIN_FILE) to cross-compile engine/ itself the same way. GCC's
# runtime (libgcc/libstdc++) is linked statically so only the SDL2/
# SDL2_mixer/GLEW/fluidsynth-lite DLLs (plus libwinpthread, which isn't
# safe to static-link the same way) need shipping alongside systemshock.exe.
ENV MINGW_TOOLCHAIN_FILE=/opt/mingw-toolchain.cmake
RUN printf '%s\n' \
        'set(CMAKE_SYSTEM_NAME Windows)' \
        'set(CMAKE_SYSTEM_PROCESSOR x86_64)' \
        'set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)' \
        'set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)' \
        'set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)' \
        'set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)' \
        '# LIBRARY/INCLUDE/PACKAGE deliberately left at CMake'"'"'s own' \
        '# cross-compiling default (BOTH) - engine/CMakeLists.txt'"'"'s' \
        '# BUNDLED SDL2/SDL2_mixer/FluidSynth find_library() calls point at' \
        '# build_ext/ (outside this sysroot entirely), which ONLY would' \
        '# refuse to search.' \
        'set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)' \
        'set(CMAKE_EXE_LINKER_FLAGS_INIT "-static-libgcc -static-libstdc++")' \
        > "${MINGW_TOOLCHAIN_FILE}"

# SDL2 and SDL2_mixer for Windows: unlike the desktop build above, these
# are libsdl.org's own official prebuilt MinGW devel packages (headers +
# import libs + DLLs for x86_64-w64-mingw32), not built from source here -
# SDL2's autotools setup targets *nix; upstream ships MinGW builds
# pre-made instead, same as engine/'s own upstream Windows build script
# (build_win64.sh) uses. Same version pins as the Linux build above, so
# both desktop builds ship the same SDL2/SDL2_mixer release.
RUN curl -sSLO "https://www.libsdl.org/release/SDL2-devel-${SDL2_VERSION}-mingw.tar.gz" \
    && tar xf "SDL2-devel-${SDL2_VERSION}-mingw.tar.gz" \
    && mkdir -p /opt/prebuilt/win \
    && mv "SDL2-${SDL2_VERSION}/x86_64-w64-mingw32" /opt/prebuilt/win/sdl2 \
    && rm -rf "SDL2-${SDL2_VERSION}" "SDL2-devel-${SDL2_VERSION}-mingw.tar.gz"

RUN curl -sSLO "https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-devel-${SDL2_MIXER_VERSION}-mingw.tar.gz" \
    && tar xf "SDL2_mixer-devel-${SDL2_MIXER_VERSION}-mingw.tar.gz" --exclude=Xcode \
    && mv "SDL2_mixer-${SDL2_MIXER_VERSION}/x86_64-w64-mingw32" /opt/prebuilt/win/sdl2_mixer \
    && rm -rf "SDL2_mixer-${SDL2_MIXER_VERSION}" "SDL2_mixer-devel-${SDL2_MIXER_VERSION}-mingw.tar.gz"

# GLEW for Windows: compiled directly instead of via GLEW's own bundled
# cross-compile Makefile configs (config/Makefile.linux-mingw64 et al) -
# those pass raw `-soname`/`--out-implib` straight to whatever $(LD) is
# set to, which only works if LD is the real `ld` binary, not gcc-as-
# linker-driver (and that config also hardcodes a 32-bit `i686-w64-
# mingw32` host despite the "64" in its name) - simpler and more robust
# to just compile+link GLEW's one source file ourselves. Produces
# glew32.dll (to ship alongside systemshock.exe) and libglew32.dll.a (the
# MinGW import library engine/CMakeLists.txt's WIN32 branch links
# against).
RUN curl -sSL -o "glew-${GLEW_VERSION}.tgz" \
        "https://sourceforge.net/projects/glew/files/glew/${GLEW_VERSION}/glew-${GLEW_VERSION}.tgz/download" \
    && tar xf "glew-${GLEW_VERSION}.tgz" \
    && cd "glew-${GLEW_VERSION}" \
    && mkdir -p /opt/prebuilt/win/glew/include/GL /opt/prebuilt/win/glew/lib \
    && x86_64-w64-mingw32-gcc -DGLEW_NO_GLU -O2 -Iinclude -c src/glew.c -o glew.o \
    && x86_64-w64-mingw32-gcc -shared \
        -Wl,--out-implib,/opt/prebuilt/win/glew/lib/libglew32.dll.a \
        -o /opt/prebuilt/win/glew/lib/glew32.dll \
        glew.o -lopengl32 -lgdi32 -luser32 -lkernel32 \
    && cp include/GL/glew.h include/GL/wglew.h /opt/prebuilt/win/glew/include/GL/ \
    && cd .. && rm -rf "glew-${GLEW_VERSION}" "glew-${GLEW_VERSION}.tgz"

# fluidsynth-lite for Windows: same source/ref/DLL-mode patch as the
# desktop build above, cross-compiled via the MinGW toolchain file. WIN32
# skips fluidsynth-lite's own pthread dependency (see its CMakeLists.txt),
# so no libwinpthread linkage to worry about here.
RUN git clone https://github.com/EtherTyper/fluidsynth-lite.git fluidsynth-lite-win \
    && cd fluidsynth-lite-win \
    && git checkout "${FLUIDSYNTH_LITE_REF}" \
    && sed -i 's/DLL"\ off/DLL"\ on/' CMakeLists.txt \
    && rm -rf .git \
    && cd .. \
    && cmake -S fluidsynth-lite-win -B build-fluidsynth-win \
        -DCMAKE_TOOLCHAIN_FILE="${MINGW_TOOLCHAIN_FILE}" \
    && cmake --build build-fluidsynth-win -j"$(nproc)" \
    && mkdir -p /opt/prebuilt/win/fluidsynth-lite/lib /opt/prebuilt/win/fluidsynth-lite/include \
    && cp build-fluidsynth-win/src/*.dll build-fluidsynth-win/src/*.dll.a \
        /opt/prebuilt/win/fluidsynth-lite/lib/ \
    && cp -a fluidsynth-lite-win/include/. /opt/prebuilt/win/fluidsynth-lite/include/ \
    && cp build-fluidsynth-win/include/fluidsynth/version.h \
        /opt/prebuilt/win/fluidsynth-lite/include/fluidsynth/version.h \
    && rm -rf fluidsynth-lite-win build-fluidsynth-win

# Node.js: needed only so Gitea/GitHub Actions' JS-based actions can run
# when this image is used as a CI job's container - see NODE_VERSION above.
RUN curl -sSL -o /tmp/node.tar.xz \
        "https://nodejs.org/dist/v${NODE_VERSION}/node-v${NODE_VERSION}-linux-x64.tar.xz" \
    && tar -xJf /tmp/node.tar.xz -C /usr/local --strip-components=1 \
    && rm /tmp/node.tar.xz

# Android SDK/NDK: the cmdline-tools' own sdkmanager installs exactly the
# platform/build-tools/NDK/CMake versions the app/build.gradle below pins.
# gradlew (invoked by build-apk.sh) resolves its own pinned Gradle version
# itself - no Gradle binary is baked into this image. Unlike the manually
# cross-compiled SDL2/SDL2_mixer/fluidsynth-lite below, `./gradlew
# assembleDebug` still needs network access at build time for Gradle/AGP's
# own dependency resolution - an accepted, deliberate exception to this
# image's otherwise-offline build philosophy (see build-apk.sh).
ENV ANDROID_HOME=/opt/android-sdk \
    ANDROID_SDK_ROOT=/opt/android-sdk
ENV PATH=${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${PATH}

RUN mkdir -p "${ANDROID_HOME}/cmdline-tools" \
    && curl -sSL -o /tmp/cmdline-tools.zip \
        "https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_CMDLINE_TOOLS_VERSION}_latest.zip" \
    && unzip -q /tmp/cmdline-tools.zip -d "${ANDROID_HOME}/cmdline-tools" \
    && mv "${ANDROID_HOME}/cmdline-tools/cmdline-tools" "${ANDROID_HOME}/cmdline-tools/latest" \
    && rm /tmp/cmdline-tools.zip \
    && yes | sdkmanager --licenses >/dev/null \
    && sdkmanager --install \
        "platform-tools" \
        "platforms;android-${ANDROID_PLATFORM_VERSION}" \
        "platforms;android-${ANDROID_COMPILE_SDK_VERSION}" \
        "build-tools;${ANDROID_BUILD_TOOLS_VERSION}" \
        "ndk;${ANDROID_NDK_VERSION}" \
        "cmake;${ANDROID_CMAKE_VERSION}"

ENV ANDROID_NDK_HOME=${ANDROID_HOME}/ndk/${ANDROID_NDK_VERSION}
ENV ANDROID_NDK_TOOLCHAIN=${ANDROID_NDK_HOME}/build/cmake/android.toolchain.cmake

# SDL2, SDL2_mixer, and fluidsynth-lite, cross-compiled for arm64-v8a (the
# Quest's only ABI, across Quest 2/3/3S/Pro) via the NDK's CMake toolchain file, each installed
# to its own prefix under /opt/prebuilt/android/ - mirrors the desktop
# build_ext/built_sdl / built_sdl_mixer layout, just for Android. Shipped
# in the APK as separate .so's (see build-apk.sh), loaded in that order by
# QuestShockActivity.getLibraries() before the game's own libmain.so.
ARG ANDROID_ABI=arm64-v8a

RUN curl -sSLO "https://www.libsdl.org/release/SDL2-${ANDROID_SDL2_VERSION}.tar.gz" \
    && tar xf "SDL2-${ANDROID_SDL2_VERSION}.tar.gz" \
    && cmake -S "SDL2-${ANDROID_SDL2_VERSION}" -B build-sdl2-android \
        -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_TOOLCHAIN}" \
        -DANDROID_ABI="${ANDROID_ABI}" -DANDROID_PLATFORM="android-${ANDROID_PLATFORM_VERSION}" \
        -DCMAKE_INSTALL_PREFIX=/opt/prebuilt/android/sdl2 -DBUILD_SHARED_LIBS=ON \
        -DSDL_STATIC=OFF \
        -DCMAKE_SHARED_LINKER_FLAGS="${ANDROID_16KB_LDFLAGS}" \
    && cmake --build build-sdl2-android -j"$(nproc)" \
    && cmake --install build-sdl2-android \
    && rm -rf "SDL2-${ANDROID_SDL2_VERSION}" "SDL2-${ANDROID_SDL2_VERSION}.tar.gz" build-sdl2-android

# All optional codecs disabled: Shockolate only ever calls
# Mix_LoadWAV_RW/Mix_HookMusic (confirmed by grep - it feeds fluidsynth's
# own PCM output through Mix_HookMusic, and never loads OGG/MOD/FLAC/MP3
# game data), so plain WAVE support (always built in, no extra
# dependency) is all that's needed - avoiding SDL2_mixer's vendored
# third-party codec libraries entirely.
RUN curl -sSLO "https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-${ANDROID_SDL2_MIXER_VERSION}.tar.gz" \
    && tar xf "SDL2_mixer-${ANDROID_SDL2_MIXER_VERSION}.tar.gz" \
    && cmake -S "SDL2_mixer-${ANDROID_SDL2_MIXER_VERSION}" -B build-sdl2mixer-android \
        -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_TOOLCHAIN}" \
        -DANDROID_ABI="${ANDROID_ABI}" -DANDROID_PLATFORM="android-${ANDROID_PLATFORM_VERSION}" \
        -DCMAKE_PREFIX_PATH=/opt/prebuilt/android/sdl2 \
        -DCMAKE_FIND_ROOT_PATH=/opt/prebuilt/android/sdl2 \
        -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH \
        -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=BOTH \
        -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=BOTH \
        -DCMAKE_INSTALL_PREFIX=/opt/prebuilt/android/sdl2_mixer -DBUILD_SHARED_LIBS=ON \
        -DSDL2MIXER_VENDORED=OFF -DSDL2MIXER_SAMPLES=OFF -DSDL2MIXER_CMD=OFF \
        -DSDL2MIXER_FLAC=OFF -DSDL2MIXER_GME=OFF -DSDL2MIXER_MOD=OFF \
        -DSDL2MIXER_MP3=OFF -DSDL2MIXER_MIDI=OFF -DSDL2MIXER_OPUS=OFF -DSDL2MIXER_VORBIS=OFF \
        -DSDL2MIXER_WAVPACK=OFF \
        -DCMAKE_SHARED_LINKER_FLAGS="${ANDROID_16KB_LDFLAGS}" \
    && cmake --build build-sdl2mixer-android -j"$(nproc)" \
    && cmake --install build-sdl2mixer-android \
    && rm -rf "SDL2_mixer-${ANDROID_SDL2_MIXER_VERSION}" "SDL2_mixer-${ANDROID_SDL2_MIXER_VERSION}.tar.gz" build-sdl2mixer-android

RUN git clone https://github.com/EtherTyper/fluidsynth-lite.git fluidsynth-lite-android \
    && cd fluidsynth-lite-android \
    && git checkout "${FLUIDSYNTH_LITE_REF}" \
    && sed -i 's/DLL"\ off/DLL"\ on/' CMakeLists.txt \
    && sed -i 's/-Wall -Werror -std=gnu11/-Wall -std=gnu11/' CMakeLists.txt \
    && sed -i 's/set ( LIBFLUID_LIBS m pthread )/set ( LIBFLUID_LIBS m )/' CMakeLists.txt \
    && rm -rf .git \
    && cd .. \
    && cmake -S fluidsynth-lite-android -B build-fluidsynth-android \
        -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_TOOLCHAIN}" \
        -DANDROID_ABI="${ANDROID_ABI}" -DANDROID_PLATFORM="android-${ANDROID_PLATFORM_VERSION}" \
        -DCMAKE_SHARED_LINKER_FLAGS="${ANDROID_16KB_LDFLAGS}" \
    && cmake --build build-fluidsynth-android -j"$(nproc)" \
    && mkdir -p /opt/prebuilt/android/fluidsynth-lite/lib /opt/prebuilt/android/fluidsynth-lite/include \
    && cp -a build-fluidsynth-android/src/libfluidsynth.so* /opt/prebuilt/android/fluidsynth-lite/lib/ \
    && cp -a fluidsynth-lite-android/include/. /opt/prebuilt/android/fluidsynth-lite/include/ \
    # version.h is generated from version.h.in at configure time - fine on
    # the desktop build (in-source, so it lands right back in the source
    # tree), but this is an out-of-source build, so it only exists under
    # build-fluidsynth-android/ and must be copied in separately.
    && cp -a build-fluidsynth-android/include/fluidsynth/version.h \
        /opt/prebuilt/android/fluidsynth-lite/include/fluidsynth/version.h \
    && rm -rf fluidsynth-lite-android build-fluidsynth-android

# OpenXR loader, for the immersive VR mode (android/app/src/main/cpp/
# xr_session.c and friends) - see android/engine-patches/
# 11-android-openxr-cmake.patch for how the engine links it.
RUN git clone --branch "release-${ANDROID_OPENXR_VERSION}" --depth 1 \
        https://github.com/KhronosGroup/OpenXR-SDK.git openxr-sdk-android \
    && rm -rf openxr-sdk-android/.git \
    && cmake -S openxr-sdk-android -B build-openxr-android \
        -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK_TOOLCHAIN}" \
        -DANDROID_ABI="${ANDROID_ABI}" -DANDROID_PLATFORM="android-${ANDROID_PLATFORM_VERSION}" \
        -DCMAKE_INSTALL_PREFIX=/opt/prebuilt/android/openxr \
        -DBUILD_LOADER=ON -DBUILD_TESTS=OFF -DBUILD_API_LAYERS=OFF \
        -DBUILD_CONFORMANCE_TESTS=OFF -DBUILD_WITH_SYSTEM_JSONCPP=OFF \
        -DDYNAMIC_LOADER=ON \
        -DCMAKE_SHARED_LINKER_FLAGS="${ANDROID_16KB_LDFLAGS}" \
    && cmake --build build-openxr-android -j"$(nproc)" --target openxr_loader \
    && cmake --install build-openxr-android \
    && mkdir -p /opt/prebuilt/android/openxr/include \
    && cp -a openxr-sdk-android/include/. /opt/prebuilt/android/openxr/include/ \
    && rm -rf openxr-sdk-android build-openxr-android

COPY build-image/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
COPY build-image/build-engine.sh /usr/local/bin/build-engine.sh
# 755, not +x: the entrypoint drops to a `builder` user matching the
# *host's* UID/GID (see docker-entrypoint.sh), which is never in these
# root-owned files' group, so it needs the image's own explicit
# world-read+execute here - `chmod +x` alone only adds execute bits on
# top of whatever "other" permissions the source file happened to have
# (which depends on the host's umask at checkout, e.g. a restrictive
# 0007 umask yields unreadable-by-other files, which then round-trip
# into the image and cause a Permission denied at container run time).
RUN chmod 755 /usr/local/bin/docker-entrypoint.sh /usr/local/bin/build-engine.sh

# Marks a shell as already running inside this image (with every engine
# build dependency prebuilt above) - lets the Makefile's `engine` target
# compile directly instead of shelling out to ./run-image.sh's `docker
# run`, which matters for CI jobs that already run inside this image
# (nested docker-in-docker isn't available there).
ENV QUESTSHOCK_BUILD_IMAGE=1

WORKDIR /workspace
ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
CMD ["/usr/local/bin/build-engine.sh"]