PKGBUILD

# Maintainer: Evangelos Foutras <[email protected]>
# Contributor: Pierre Schmitz <[email protected]>
# Contributor: Jan "heftig" Steffens <[email protected]>
# Contributor: Daniel J Griffiths <[email protected]>

pkgname=chromium
pkgver=69.0.3497.92
pkgrel=1
_launcher_ver=6
pkgdesc="A web browser built for speed, simplicity, and security"
arch=('x86_64')
url="https://www.chromium.org/Home"
license=('BSD')
depends=('gtk3' 'nss' 'alsa-lib' 'xdg-utils' 'libxss' 'libcups' 'libgcrypt'
         'ttf-font' 'systemd' 'dbus' 'libpulse' 'pciutils' 'json-glib'
         'desktop-file-utils' 'hicolor-icon-theme' 'ncurses5-compat-libs')
makedepends=('python' 'python2' 'gperf' 'yasm' 'mesa' 'ninja' 'nodejs' 'git'
             'clang' 'lld' 'gn')
optdepends=('pepper-flash: support for Flash content'
            'kdialog: needed for file dialogs in KDE'
            'gnome-keyring: for storing passwords in GNOME keyring'
            'kwallet: for storing passwords in KWallet')
options=('!strip')
install=chromium.install
source=(https://commondatastorage.googleapis.com/chromium-browser-official/$pkgname-$pkgver.tar.xz
        chromium-launcher-$_launcher_ver.tar.gz::https://github.com/foutrelis/chromium-launcher/archive/v$_launcher_ver.tar.gz
        fix-cfi-icall-failure-with-use_system_libjpeg-true.patch
        only-disable-cfi-icall-when-use_system_libjpeg-true.patch
        chromium-widevine-r2.patch
        chromium-system-icu.patch
        chromium-skia-harmony.patch)
sha256sums=('3bdda20b49953b025a788c5c992accfa43057310afaa02bce67c8d709eb5a019'
            '04917e3cd4307d8e31bfb0027a5dce6d086edb10ff8a716024fbb8bb0c7dccf1'
            '97b421bc60a4abdf37de2d88a51b973e9f68fb44d1eccd464adfb3d9f5d71478'
            '9cae9ded6497afd15ad72d963897425ab6c7f28941bb3c3948e7996610a0d180'
            '02c69bb3954087db599def7f5b6d65cf8f7cf2ed81dfbdaa4bb7b51863b4df15'
            'c4f2d1bed9034c02b8806f00c2e8165df24de467803855904bff709ceaf11af5'
            'feca54ab09ac0fc9d0626770a6b899a6ac5a12173c7d0c1005bc3964ec83e7b3')

# 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=(
  [ffmpeg]=ffmpeg
  [flac]=flac
  [fontconfig]=fontconfig
  [freetype]=freetype2
  [harfbuzz-ng]=harfbuzz
  #[icu]=icu                  # NACL doesn't like this
  [libdrm]=
  [libjpeg]=libjpeg
  #[libpng]=libpng            # https://crbug.com/752403#c10
  #[libvpx]=libvpx            # needs unreleased libvpx
  [libwebp]=libwebp
  [libxml]=libxml2
  [libxslt]=libxslt
  [opus]=opus
  [re2]=re2
  [snappy]=snappy
  [yasm]=
  [zlib]=minizip
)
_unwanted_bundled_libs=(
  ${!_system_libs[@]}
  ${_system_libs[libjpeg]+libjpeg_turbo}
)
depends+=(${_system_libs[@]})

# Google API keys (see https://www.chromium.org/developers/how-tos/api-keys)
# Note: These are for Arch Linux use ONLY. For your own distribution, please
# get your own set of keys.
_google_api_key=AIzaSyDwr302FpOSkGRpLlUpPThNTDPbXcIn_FM
_google_default_client_id=413772536636.apps.googleusercontent.com
_google_default_client_secret=0ZChLK6AxeA3Isu96MkwqDR4

prepare() {
  cd "$srcdir/$pkgname-$pkgver"

  # Allow building against system libraries in official builds
  sed -i 's/OFFICIAL_BUILD/GOOGLE_CHROME_BUILD/' \
    tools/generate_shim_headers/generate_shim_headers.py

  # https://crbug.com/866290
  patch -Np1 -i ../fix-cfi-icall-failure-with-use_system_libjpeg-true.patch
  patch -Np1 -i ../only-disable-cfi-icall-when-use_system_libjpeg-true.patch

  # https://crbug.com/skia/6663#c10
  patch -Np4 -i ../chromium-skia-harmony.patch

  # Fixes from Gentoo
  patch -Np1 -i ../chromium-widevine-r2.patch

  # https://bugs.gentoo.org/661880#c21
  patch -Np1 -i ../chromium-system-icu.patch

  # Remove compiler flags not supported by our system clang
  sed -i \
    -e '/"-Wno-ignored-pragma-optimize"/d' \
    build/config/compiler/BUILD.gn

  # Force script incompatible with Python 3 to use /usr/bin/python2
  sed -i '1s|python$|&2|' third_party/dom_distiller_js/protoc_plugins/*.py

  mkdir -p third_party/node/linux/node-linux-x64/bin
  ln -s /usr/bin/node third_party/node/linux/node-linux-x64/bin/

  python2 build/download_nacl_toolchains.py \
    --packages nacl_x86_newlib,pnacl_newlib,pnacl_translator \
    sync --extract

  # 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/yasm/run_yasm.py' \
      \! -regex '.*\.\(gn\|gni\|isolate\)' \
      -delete
  done

  python2 build/linux/unbundle/replace_gn_files.py \
    --system-libraries "${!_system_libs[@]}"

  # Needed to build NACL
  mkdir -p third_party/llvm-build/Release+Asserts/bin
  ln -s /usr/bin/clang third_party/llvm-build/Release+Asserts/bin/clang
  ln -s /usr/bin/clang++ third_party/llvm-build/Release+Asserts/bin/clang++
  ln -s /usr/bin/ar third_party/llvm-build/Release+Asserts/bin/ar
  ln -s /usr/bin/ar third_party/llvm-build/Release+Asserts/bin/llvm-ar
  ln -s /usr/bin/nm third_party/llvm-build/Release+Asserts/bin/nm
  ln -s /usr/bin/nm third_party/llvm-build/Release+Asserts/bin/llvm-nm
}

build() {
  make -C chromium-launcher-$_launcher_ver

  cd "$srcdir/$pkgname-$pkgver"

  if check_buildoption ccache y; then
    # Avoid falling back to preprocessor mode when sources contain time macros
    export CCACHE_SLOPPINESS=time_macros
  fi

  export CC=clang
  export CXX=clang++
  export AR=ar
  export NM=nm
  export PNACLPYTHON=python2

  local _flags=(
    'custom_toolchain="//build/toolchain/linux/unbundle:default"'
    'host_toolchain="//build/toolchain/linux/unbundle:default"'
    'clang_use_chrome_plugins=false'
    'is_official_build=true' # implies is_cfi=true on x86_64
    'is_debug=false'
    'treat_warnings_as_errors=false'
    'fieldtrial_testing_like_official_build=true'
    'remove_webcore_debug_symbols=true'
    'ffmpeg_branding="Chrome"'
    'proprietary_codecs=true'
    'link_pulseaudio=true'
    'use_gnome_keyring=false'
    'use_sysroot=false'
    'linux_use_bundled_binutils=false'
    'use_custom_libcxx=false'
    'enable_hangout_services_extension=true'
    'enable_widevine=true'
    'enable_nacl=true'
    'enable_nacl_nonsfi=true'
    'enable_swiftshader=false'
    "google_api_key=\"${_google_api_key}\""
    "google_default_client_id=\"${_google_default_client_id}\""
    "google_default_client_secret=\"${_google_default_client_secret}\""
  )

  # 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__='

  if check_option strip y; then
    _flags+=('symbol_level=0')

    # Mimic exclude_unwind_tables=true
    CFLAGS+='   -fno-unwind-tables -fno-asynchronous-unwind-tables'
    CXXFLAGS+=' -fno-unwind-tables -fno-asynchronous-unwind-tables'
    CPPFLAGS+=' -DNO_UNWIND_TABLES'
  fi

  gn gen out/Release --args="${_flags[*]}" --script-executable=/usr/bin/python2
  ninja -C out/Release chrome chrome_sandbox chromedriver
}

package() {
  cd chromium-launcher-$_launcher_ver
  make PREFIX=/usr DESTDIR="$pkgdir" install
  install -Dm644 LICENSE \
    "$pkgdir/usr/share/licenses/chromium/LICENSE.launcher"

  cd "$srcdir/$pkgname-$pkgver"

  install -D out/Release/chrome "$pkgdir/usr/lib/chromium/chromium"
  install -Dm4755 out/Release/chrome_sandbox "$pkgdir/usr/lib/chromium/chrome-sandbox"
  ln -s /usr/lib/chromium/chromedriver "$pkgdir/usr/bin/chromedriver"

  install -Dm644 chrome/installer/linux/common/desktop.template \
    "$pkgdir/usr/share/applications/chromium.desktop"
  install -Dm644 chrome/app/resources/manpage.1.in \
    "$pkgdir/usr/share/man/man1/chromium.1"
  sed -i \
    -e "s/@@MENUNAME@@/Chromium/g" \
    -e "s/@@PACKAGE@@/chromium/g" \
    -e "s/@@USR_BIN_SYMLINK_NAME@@/chromium/g" \
    "$pkgdir/usr/share/applications/chromium.desktop" \
    "$pkgdir/usr/share/man/man1/chromium.1"

  cp \
    out/Release/{chrome_{100,200}_percent,resources}.pak \
    out/Release/{*.bin,chromedriver} \
    "$pkgdir/usr/lib/chromium/"
  install -Dm644 -t "$pkgdir/usr/lib/chromium/locales" out/Release/locales/*.pak

  if [[ -z ${_system_libs[icu]+set} ]]; then
    cp out/Release/icudtl.dat "$pkgdir/usr/lib/chromium/"
  fi

  # Manually strip binaries so that 'nacl_irt_*.nexe' is left intact
  strip $STRIP_BINARIES "$pkgdir/usr/lib/chromium/"{chromium,chrome-sandbox,chromedriver}

  cp out/Release/nacl_helper{,_bootstrap} out/Release/nacl_irt_*.nexe \
    "$pkgdir/usr/lib/chromium/"
  strip $STRIP_BINARIES "$pkgdir/usr/lib/chromium/"nacl_helper{,_bootstrap}

  for size in 22 24 48 64 128 256; do
    install -Dm644 "chrome/app/theme/chromium/product_logo_$size.png" \
      "$pkgdir/usr/share/icons/hicolor/${size}x${size}/apps/chromium.png"
  done

  for size in 16 32; do
    install -Dm644 "chrome/app/theme/default_100_percent/chromium/product_logo_$size.png" \
      "$pkgdir/usr/share/icons/hicolor/${size}x${size}/apps/chromium.png"
  done

  install -Dm644 LICENSE "$pkgdir/usr/share/licenses/chromium/LICENSE"
}

# vim:set ts=2 sw=2 et: