path: root/PKGBUILD

# Maintainer: Caleb Maclennan <caleb@alerque.com>
# Contributor: loqs <bugs-archlinux@entropy-collector.net>

# https://releases.electronjs.org/
# https://github.com/stha09/chromium-patches/releases

pkgver=26.6.4
_chromiumver=116.0.5845.228
_gcc_patchset=116-patchset-2
pkgrel=1
_major_ver=${pkgver%%.*}
pkgname="electron${_major_ver}"
pkgdesc='Build cross platform desktop apps with web technologies'
arch=(x86_64)
url='https://electronjs.org'
license=(MIT custom)
depends=(c-ares
         gtk3
         libevent
         libffi
         nss)
makedepends=(clang
             git
             gn
             gperf
             harfbuzz-icu
             http-parser
             java-runtime-headless
             libnotify
             lld
             llvm
             ninja
             npm
             pciutils
             pipewire
             python
             python-httplib2
             python-pyparsing
             python-requests
             python-six
             qt5-base
             wget
             yarn)
optdepends=('kde-cli-tools: file deletion support (kioclient5)'
            'pipewire: WebRTC desktop sharing under Wayland'
            'qt5-base: enable Qt5 with --enable-features=AllowQt'
            'trash-cli: file deletion support (trash-put)'
            'xdg-utils: open URLs with desktop’s default (xdg-email, xdg-open)')
options=('!lto') # Electron adds its own flags for ThinLTO
source=("git+https://github.com/electron/electron.git#tag=v$pkgver"
        'git+https://chromium.googlesource.com/chromium/tools/depot_tools.git#branch=main'
        "chromium-mirror::git+https://github.com/chromium/chromium.git#tag=$_chromiumver"
        "https://github.com/stha09/chromium-patches/releases/download/chromium-$_gcc_patchset/chromium-$_gcc_patchset.tar.xz"
        REVERT-disable-autoupgrading-debug-info.patch
        default_app-icon.patch
        electron-launcher.sh
        electron.desktop
        icu-74.patch
        jinja-python-3.10.patch
        libxml2-2.12.patch
        std-vector-non-const.patch
        use-system-libraries-in-node.patch)
sha256sums=('SKIP'
            'SKIP'
            'SKIP'
            '25ad7c1a5e0b7332f80ed15ccf07d7e871d8ffb4af64df7c8fef325a527859b0'
            '1b782b0f6d4f645e4e0daa8a4852d63f0c972aa0473319216ff04613a0592a69'
            'dd2d248831dd4944d385ebf008426e66efe61d6fdf66f8932c963a12167947b4'
            'b0ac3422a6ab04859b40d4d7c0fd5f703c893c9ec145c9894c468fbc0a4d457c'
            '4484200d90b76830b69eea3a471c103999a3ce86bb2c29e6c14c945bf4102bae'
            'ff9ebd86b0010e1c604d47303ab209b1d76c3e888c423166779cefbc22de297f'
            '55dbe71dbc1f3ab60bf1fa79f7aea7ef1fe76436b1d7df48728a1f8227d2134e'
            '1808df5ba4d1e2f9efa07ac6b510bec866fa6d60e44505d82aea3f6072105a71'
            '893bc04c7fceba2f0a7195ed48551d55f066bbc530ec934c89c55768e6f3949c'
            'ff588a8a4fd2f79eb8a4f11cf1aa151298ffb895be566c57cc355d47f161f53f')


# Possible replacements are listed in build/linux/unbundle/replace_gn_files.py
# Keys are the names in the above script; values are the dependencies in Arch
declare -gA _system_libs=(
  # [brotli]=brotli
  [dav1d]=dav1d
  [ffmpeg]=ffmpeg
  [flac]=flac
  [fontconfig]=fontconfig
  [freetype]=freetype2
  [harfbuzz-ng]=harfbuzz
  [icu]=icu
  [jsoncpp]=jsoncpp
  #[libaom]=aom      # https://aomedia.googlesource.com/aom/+/706ee36dcc82
  #[libavif]=libavif # https://github.com/AOMediaCodec/libavif/commit/4d2776a3
  [libdrm]=
  [libjpeg]=libjpeg
  [libpng]=libpng
  #[libvpx]=libvpx
  [libwebp]=libwebp
  [libxml]=libxml2
  [libxslt]=libxslt
  [opus]=opus
  [re2]=re2
  [snappy]=snappy
  [woff2]=woff2
  [zlib]=minizip
)
_unwanted_bundled_libs=(
  $(printf "%s\n" ${!_system_libs[@]} | sed 's/^libjpeg$/&_turbo/')
)
depends+=(${_system_libs[@]})

prepare() {
  sed -i "s|@ELECTRON@|${pkgname}|" electron-launcher.sh
  sed -i "s|@ELECTRON@|${pkgname}|" electron.desktop
  sed -i "s|@ELECTRON_NAME@|Electron ${_major_ver}|" electron.desktop

  sed --in-place "/'chromium_version':/{n;s/'[0-9.]\+',/'${_chromiumver}',/}" "${srcdir}/electron/DEPS"

cat >.gclient <<EOF
solutions = [
  {
    "name": "src/electron",
    "url": "file://${srcdir}/electron@v$pkgver",
    "deps_file": "DEPS",
    "managed": False,
    "custom_deps": {
      "src": None,
    },
    "custom_vars": {},
  },
]
EOF

  export PATH+=":$PWD/depot_tools" DEPOT_TOOLS_UPDATE=0
  export VPYTHON_BYPASS='manually managed python not supported by chrome operations'

  echo "Linking chromium from sources..."
  ln -sfn chromium-mirror src

  depot_tools/gclient.py sync -D \
      --nohooks \
      --with_branch_heads \
      --with_tags

  echo "Running hooks..."
  # depot_tools/gclient.py runhooks
  src/build/landmines.py
  src/build/util/lastchange.py -o src/build/util/LASTCHANGE
  src/build/util/lastchange.py -m GPU_LISTS_VERSION \
    --revision-id-only --header src/gpu/config/gpu_lists_version.h
  src/build/util/lastchange.py -m SKIA_COMMIT_HASH \
    -s src/third_party/skia --header src/skia/ext/skia_commit_hash.h
  src/build/util/lastchange.py \
    -s src/third_party/dawn --revision src/gpu/webgpu/DAWN_VERSION
  src/tools/update_pgo_profiles.py --target=linux update \
    --gs-url-base=chromium-optimization-profiles/pgo_profiles
  depot_tools/download_from_google_storage.py --no_resume --extract --no_auth \
    --bucket chromium-nodejs -s src/third_party/node/node_modules.tar.gz.sha1

  patch -Np1 -i "${srcdir}/std-vector-non-const.patch" -d src/electron

  src/electron/script/apply_all_patches.py \
      src/electron/patches/config.json

  pushd src
  pushd electron
  yarn install --frozen-lockfile
  popd

  echo "Applying local patches..."

  # Upstream fixes
  # Fix build with libxml2 2.12
  patch -Np1 -i ../libxml2-2.12.patch

  # Fix build with ICU 74
  patch -Np1 -i ../icu-74.patch

  # Revert addition of compiler flag that needs newer clang
  patch -Rp1 -i ../REVERT-disable-autoupgrading-debug-info.patch

  # Fixes for building with libstdc++ instead of libc++
  patch -Np1 -i ../patches/chromium-114-maldoca-include.patch
  patch -Np1 -i ../patches/chromium-114-ruy-include.patch
  patch -Np1 -i ../patches/chromium-114-vk_mem_alloc-include.patch
  patch -Np1 -i ../patches/chromium-116-object_paint_properties_sparse-include.patch
  patch -Np1 -i ../patches/chromium-116-profile_view_utils-include.patch

  # Link to system tools required by the build
  mkdir -p third_party/node/linux/node-linux-x64/bin
  ln -sfn /usr/bin/node third_party/node/linux/node-linux-x64/bin/
  ln -sfn /usr/bin/java third_party/jdk/current/bin/
  ln -sfn /usr/bin/clang-format buildtools/linux64

  # Electron specific fixes
  patch -Np1 -i "${srcdir}/jinja-python-3.10.patch" -d "third_party/electron_node/tools/inspector_protocol/jinja2"
  patch -Np1 -i "${srcdir}/use-system-libraries-in-node.patch"
  patch -Np1 -i "${srcdir}/default_app-icon.patch"  # Icon from .desktop file

  # Allow building against system libraries in official builds
  echo "Patching Chromium for using system libraries..."
  sed -i 's/OFFICIAL_BUILD/GOOGLE_CHROME_BUILD/' \
    tools/generate_shim_headers/generate_shim_headers.py
  # Remove bundled libraries for which we will use the system copies; this
  # *should* do what the remove_bundled_libraries.py script does, with the
  # added benefit of not having to list all the remaining libraries
  local _lib
  for _lib in ${_unwanted_bundled_libs[@]}; do
    find "third_party/$_lib" -type f \
      \! -path "third_party/$_lib/chromium/*" \
      \! -path "third_party/$_lib/google/*" \
      \! -path "third_party/harfbuzz-ng/utils/hb_scoped.h" \
        \! -regex '.*\.\(gn\|gni\|isolate\)' \
        -delete
  done

  ./build/linux/unbundle/replace_gn_files.py \
    --system-libraries "${!_system_libs[@]}"
}

build() {
  cd src

  export CC=clang
  export CXX=clang++
  export AR=ar
  export NM=nm

  local _flags=(
    'custom_toolchain="//build/toolchain/linux/unbundle:default"'
    'host_toolchain="//build/toolchain/linux/unbundle:default"'
    'clang_base_path="/usr"'
    'clang_use_chrome_plugins=false'
    'symbol_level=0' # sufficient for backtraces on x86(_64)
    'chrome_pgo_phase=0' # needs newer clang to read the bundled PGO profile
    'treat_warnings_as_errors=false'
    'disable_fieldtrial_testing_config=true'
    'blink_enable_generated_code_formatting=false'
    'ffmpeg_branding="Chrome"'
    'proprietary_codecs=true'
    'rtc_use_pipewire=true'
    'link_pulseaudio=true'
    'use_custom_libcxx=false'
    'use_sysroot=false'
    'use_system_libffi=true'
    'enable_hangout_services_extension=true'
    'enable_widevine=false'
    'enable_nacl=false'
    'enable_rust=false'
  )

  if [[ -n ${_system_libs[icu]+set} ]]; then
    _flags+=('icu_use_data_file=false')
  fi

  # Facilitate deterministic builds (taken from build/config/compiler/BUILD.gn)
  CFLAGS+='   -Wno-builtin-macro-redefined'
  CXXFLAGS+=' -Wno-builtin-macro-redefined'
  CPPFLAGS+=' -D__DATE__=  -D__TIME__=  -D__TIMESTAMP__='

  # Do not warn about unknown warning options
  CFLAGS+='   -Wno-unknown-warning-option'
  CXXFLAGS+=' -Wno-unknown-warning-option'

  # Let Chromium set its own symbol level
  CFLAGS=${CFLAGS/-g }
  CXXFLAGS=${CXXFLAGS/-g }

  # https://github.com/ungoogled-software/ungoogled-chromium-archlinux/issues/123
  CFLAGS=${CFLAGS/-fexceptions}
  CFLAGS=${CFLAGS/-fcf-protection}
  CXXFLAGS=${CXXFLAGS/-fexceptions}
  CXXFLAGS=${CXXFLAGS/-fcf-protection}

  # This appears to cause random segfaults when combined with ThinLTO
  # https://bugs.archlinux.org/task/73518
  CFLAGS=${CFLAGS/-fstack-clash-protection}
  CXXFLAGS=${CXXFLAGS/-fstack-clash-protection}

  # https://crbug.com/957519#c122
  CXXFLAGS=${CXXFLAGS/-Wp,-D_GLIBCXX_ASSERTIONS}

  export CHROMIUM_BUILDTOOLS_PATH="${PWD}/buildtools"
  gn gen out/Release \
      --args="import(\"//electron/build/args/release.gn\") ${_flags[*]}"
  ninja -C out/Release electron electron_dist_zip
  # ninja -C out/Release third_party/electron_node:headers
}

package() {
  install -dm755 "${pkgdir:?}/usr/lib/${pkgname}"
  bsdtar -xf src/out/Release/dist.zip -C "${pkgdir}/usr/lib/${pkgname}"

  chmod u+s "${pkgdir}/usr/lib/${pkgname}/chrome-sandbox"

  install -dm755 "${pkgdir}/usr/share/licenses/${pkgname}"
  for l in "${pkgdir}/usr/lib/${pkgname}"/{LICENSE,LICENSES.chromium.html}; do
    ln -s  \
      "$(realpath --relative-to="${pkgdir}/usr/share/licenses/${pkgname}" "${l}")" \
      "${pkgdir}/usr/share/licenses/${pkgname}"
  done

  install -Dm755 "${srcdir}/electron-launcher.sh" \
    "${pkgdir}/usr/bin/${pkgname}"

  # Install .desktop and icon file (see default_app-icon.patch)
  install -Dm644 electron.desktop \
    "${pkgdir}/usr/share/applications/${pkgname}.desktop"
  install -Dm644 src/electron/default_app/icon.png \
          "${pkgdir}/usr/share/pixmaps/${pkgname}.png"  # hicolor has no 1024x1024
}