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# Maintainer (Arch): Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor (Arch): Ionut Biru <ibiru@archlinux.org>
# Contributor (Arch): Jakub Schmidtke <sjakub@gmail.com>
# Contributor: Figue <ffigue at gmail>
# Contributor: fauno <fauno@kiwwwi.com.ar>
# Contributor: evr <evanroman at gmail>
# Contributor: Muhammad 'MJ' Jassim <UnbreakableMJ@gmail.com>
# Contributor: vando <facundo@esdebian.org>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Henry Jensen <hjensen@connochaetos.org>
# Contributor: Luke Shumaker <lukeshu@parabola.nu>
# Contributor: Márcio Silva <coadde@hyperbola.info>
# Maintainer: Andreas Grapentin <andreas@grapentin.org>
# Contributor: bill-auger <bill-auger@programmer.net>
# Contributor: grizzlyuser <grizzlyuser@protonmail.com>


# NOTE: icecat (60.7 < V <= 78.6) are not upstream releases
#       upstream releases would normally have '-gnu' appended to $_upstream_ver
#       this build is based on gnuzilla VCS developement sources
#       rev: a43514623e93d4f3fe6d61f5b2f82c5ef29bf518


pkgname=icecat
_upstream_ver=78.6.0 # -gnu
pkgver=${_upstream_ver//-/_}
pkgrel=1
pkgdesc="GNU IceCat - a libre standalone web browser based on Mozilla Firefox ESR"
arch=(x86_64 i686 armv7h)
license=(MPL GPL LGPL)
url=http://www.gnu.org/software/gnuzilla/
depends=(gtk3 libxt mime-types dbus-glib ffmpeg nss ttf-font libpulse)
makedepends=(unzip zip diffutils yasm mesa imake inetutils xorg-server-xvfb
             autoconf2.13 rust clang llvm jack gtk2 nodejs cbindgen nasm
             python-setuptools python-psutil)
makedepends+=(mozilla-searchplugins jq)
makedepends[15]='cbindgen=0.15.0' # FIXME: FTBS against cbindgen v0.16.0
                                  #          dom/webgpu/ipc/WebGPUParent.cpp:426:29: error: no member named '_0' in 'mozilla::webgpu::ffi::WGPUBufferBinding'
                                  #          dom/webgpu/ipc/WebGPUParent.cpp:432:34: error: member reference base type 'mozilla::webgpu::ffi::WGPUTextureViewId' (aka 'unsigned long') is not a structure or union
optdepends=('networkmanager: Location detection via available WiFi networks'
            'libnotify: Notification integration'
            'pulseaudio: Audio support'
            'speech-dispatcher: Text-to-Speech'
            'hunspell-en_US: Spell checking, American English')
options=(!emptydirs !makeflags !strip)
source=(https://repo.parabola.nu/other/${pkgname}/${pkgname}-${_upstream_ver}-pre.tar.bz2{,.sig}
        0001-Use-remoting-name-for-GDK-application-names.patch
        rust-1.48_icecat-78.6.0.patch
        ${pkgname}.desktop)
source+=(searchplugins_list.json
         libre.patch)
sha256sums=('edcbdf85d74408420427d2959e1709327fbe7a2ce6810045df4aeb3a70f14555'
            'SKIP'
            '3bb7463471fb43b2163a705a79a13a3003d70fff4bbe44f467807ca056de9a75'
            'd90faa59dc59f457c5770b3cc1ee4caa5b255e754ab9ab3993af894992c007e4'
            'f9f954fd06739e70a72ccf4774cfa71f349a4b133ec8f5dea0a3bcca2cf7321d'
            '3edb4add450f94c579f2df7c16ac4d9bd9f5c6acf3fbd8a05ce24c21c317257d'
            '28029afa3201e1be8138be06f741c59d64869edf0c9e90dbb05cfa6b5fff4ecd')
validpgpkeys=('318C679D94F17700CC847DE646A70073E4E50D4E'  # Ruben Rodriguez
              '3954A7AB837D0EA9CFA9798925DB7D9B5A8D4B40') # bill-auger


# PGO requires networking
_should_skip_pgo_armv7h=1 # disable for armv7h - always
_should_skip_pgo_i686=1   # disable for i686   - always
_should_skip_pgo_x86_64=1 # disable for x86_64 - libremakepkg
eval "_should_skip_pgo=\$_should_skip_pgo_${CARCH}"


_check_build_config() {
  pushd "$srcdir/$pkgname-${pkgver%_*}" > /dev/null

  echo "Checking build configuration..."

  # Configure produces mozinfo.json that reflects current configuration.
  # See build/docs/mozinfo.rst
  ./mach configure

  # In this test, jq collects values of the following keys of mozinfo.json into array,
  # and checks if any of them are not equal to false, in which case it returns "true".
  # E.g. if the value of any key is true or null (in case the key is missing from mozinfo.json),
  # that means the build configuration has to be reworked.
  local obj_directory=$(./mach environment | sed -En '/object directory:/{n;s/^\s+//;p;}')
  local antifeature_keys=(.crashreporter .datareporting .healthreport .normandy .telemetry .updater)
  local antifeatures=()
  echo "obj_directory is: ${obj_directory}"
  for key in ${antifeature_keys[@]}
  do  jq -e "${key} != false" "${obj_directory}"/mozinfo.json && antifeatures+=(${key})
  done
  if   (( ${#antifeatures[@]} ))
  then echo "Some anti-features are not disabled in build configuration files, aborting:"
       for key in ${antifeatures[@]} ; do echo "  - ${key} is enabled" ; done ;
       # FIXME: - .datareporting is enabled
#        return 1
  fi

  popd > /dev/null
}

prepare() {
  mkdir -p mozbuild
  cd "$srcdir/$pkgname-${pkgver%_*}"

  # https://bugzilla.mozilla.org/show_bug.cgi?id=1530052
  patch -Np1 -i ../0001-Use-remoting-name-for-GDK-application-names.patch

  # https://bugzilla.mozilla.org/show_bug.cgi?id=1667736
  patch -Np1 -i ../rust-1.48_icecat-78.6.0.patch

  cat >../mozconfig <<END
ac_add_options --enable-application=browser

ac_add_options --prefix=/usr
ac_add_options --enable-release
ac_add_options --enable-hardening
ac_add_options --enable-optimize
ac_add_options --enable-rust-simd
export CC='clang --target=x86_64-unknown-linux-gnu'
export CXX='clang++ --target=x86_64-unknown-linux-gnu'
export AR=llvm-ar
export NM=llvm-nm
export RANLIB=llvm-ranlib

# Branding
ac_add_options --enable-official-branding
ac_add_options --enable-update-channel=release
ac_add_options --with-distribution-id=nu.parabola
ac_add_options --with-unsigned-addon-scopes=app,system
ac_add_options --allow-addon-sideload
export MOZ_APP_NAME=${pkgname}
export MOZ_APP_REMOTINGNAME=${pkgname}
export MOZ_TELEMETRY_REPORTING=
export MOZ_REQUIRE_SIGNING=
ac_add_options --with-app-basename=${pkgname}
ac_add_options --with-app-name=${pkgname}

# System libraries
ac_add_options --with-system-nspr
ac_add_options --with-system-nss

# Features
ac_add_options --enable-alsa
ac_add_options --enable-jack
ac_add_options --disable-crashreporter
ac_add_options --disable-updater
ac_add_options --disable-eme
END


  ## [ARCH-SPECIFIC CONFIG] ##

  # TODO: this per-arch handling is yet to be re-worked for armv7h and i686
  case "${CARCH}" in
  armv*)
#    sed -i '/--enable-linker=gold/d' .mozconfig
#    sed -i '/--enable-rust-simd/d' .mozconfig
#
#    # https://bugzilla.mozilla.org/show_bug.cgi?id=1463035
#    patch -Np1 -i "$srcdir"/mozilla-1463035.patch
#
#    cat >> .mozconfig <<END
#ac_add_options --enable-optimize="-g -O2 -fno-schedule-insns"
#ac_add_options --disable-elf-hack
#ac_add_options --disable-webrtc
#ac_add_options --disable-av1
#END
    ;;
  i686)
#    sed -i '/--enable-linker=gold/d' .mozconfig
    ;;
  x86_64)
    ;;
  *) echo "no [ARCH-SPECIFIC CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac


  ## searchengines ##

  pushd browser/components/search/extensions > /dev/null

  # replace default searchplugins
  cp -rv /usr/share/mozilla/searchplugins/* .
  find -mindepth 1 -maxdepth 1      \
       -not -name ddg               \
       -not -name duckduckgo-html   \
       -not -name duckduckgo-lite   \
       -not -name internet-archive  \
       -not -name parabola-labs     \
       -not -name parabola-packages \
       -not -name parabola-wiki     \
       -not -name searx             \
       -not -name wikipedia         \
       -not -name yacy              \
       -not -name list.json         \
       -exec rm -rf {} \;

  # Patch search-engines config
  cp "${srcdir}"/searchplugins_list.json list.json
  sed -i 's|https://duckduckgo.com/|https://html.duckduckgo.com/html/|' ddg/manifest.json

  # Removing URL parameters that let DuckDuckGo know the place in UI
  # the search was ran from (like address bar, context menu, etc.)
  local jq_cmd='del(.chrome_settings_overrides.search_provider.params)'
  jq "${jq_cmd}" ddg/manifest.json > manifest.json.tmp
  ! diff manifest.json.tmp ddg/manifest.json > /dev/null
  mv manifest.json.tmp ddg/manifest.json

  # Sanity-check search-engines patching
  local engines_err_msg="search-engines patching needs re-working"
  jq < list.json || ! echo "${engines_err_msg}"

  popd > /dev/null


  ## libre patching ##

  # Patch and remove anything that's left
  echo "applying libre.patch"
  patch -Np1 -i "${srcdir}"/libre.patch
}

build() {
  cd "$srcdir/$pkgname-${pkgver%_*}"

  export MOZ_NOSPAM=1
  export MOZBUILD_STATE_PATH="$srcdir/mozbuild"
  export MACH_USE_SYSTEM_PYTHON=1

  # LTO needs more open files
  ulimit -n 4096


  ## [ARCH-SPECIFIC BUILD ENV] ##

  # TODO: this per-arch handling is yet to be re-worked for armv7h and i686
  case "${CARCH}" in
    armv*)
      # clang-{9,10,11} -> error: unknown argument: '-fvar-tracking-assignments'
#       CFLAGS="${CFLAGS/-fvar-tracking-assignments/}"
#       CXXFLAGS="${CXXFLAGS/-fvar-tracking-assignments/}"
#
#       export RUSTFLAGS+=" -Cdebuginfo=0 -Clto=off"
#       export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"
#       export CFLAGS
#       export CXXFLAGS
      ;;
    i686)
      # -fno-plt with cross-LTO -> LLVM ERROR: Function Import: link error
#       CFLAGS="${CFLAGS/-fno-plt/}"
#       CXXFLAGS="${CXXFLAGS/-fno-plt/}"

#       export RUSTFLAGS+=" -Cdebuginfo=0 -Clto=off"
#       export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"
#       export CFLAGS
#       export CXXFLAGS
      ;;
    x86_64)
      # clang-{9,10,11} -> error: unknown argument: '-fvar-tracking-assignments'
      CFLAGS="${CFLAGS/-fvar-tracking-assignments/}"
      CXXFLAGS="${CXXFLAGS/-fvar-tracking-assignments/}"

      # TODO: this may only be needed for v78
      # -fno-plt with cross-LTO causes obscure LLVM errors
      # LLVM ERROR: Function Import: link error
      CFLAGS="${CFLAGS/-fno-plt/}"
      CXXFLAGS="${CXXFLAGS/-fno-plt/}"

      export CFLAGS
      export CXXFLAGS
      ;;
    *) echo "no [ARCH-SPECIFIC BUILD ENV] for arch: ${CARCH}" ; return 1 ;
      ;;
  esac


  ## [ARCH-SPECIFIC BUILD CONFIG] ##

  # TODO: this per-arch handling is yet to be re-worked for armv7h and i686
  case ${CARCH} in
  armv7h)
    ;;
  i686)
    # avoid excessive debug symbols in rust leading to out-of-memory situations
#     sed -i "s/debug_info = '\''2'\''/debug_info = '\''0'\''/" build/moz.configure/toolchain.configure
    ;;
  x86_64)
    ;;
  *) echo "no [ARCH-SPECIFIC BUILD CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac

  if (( $_should_skip_pgo ))
  then
    # skipping "3-tier PGO" "instrumented browser", to avoid OOM problems;
    # so we have the final .mozconfig now
    cp ../mozconfig .mozconfig
  else
    # Do 3-tier PGO
    echo "Building instrumented browser..."
    cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-profile-generate=cross
END
    _check_build_config
    ./mach build

    echo "Profiling instrumented browser..."
    ./mach package
    LLVM_PROFDATA=llvm-profdata \
      JARLOG_FILE="$PWD/jarlog" \
      xvfb-run -s "-screen 0 1920x1080x24 -nolisten local" \
      ./mach python build/pgo/profileserver.py

    if [[ ! -s merged.profdata ]]; then
      echo "No profile data produced."
      return 1
    fi

    if [[ ! -s jarlog ]]; then
      echo "No jar log produced."
      return 1
    fi

  echo "Removing instrumented browser..."
  ./mach clobber

  cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-lto=cross
ac_add_options --enable-profile-use=cross
ac_add_options --with-pgo-profile-path=${PWD@Q}/merged.profdata
ac_add_options --with-pgo-jarlog=${PWD@Q}/jarlog
END
  fi # $_should_skip_pgo


  ## sanity checks ##

  # each of the [ARCH-SPECIFIC BUILD CONFIG] branches above should have created .mozconfig
  [[ ! -f .mozconfig ]] && echo ".mozconfig file not found in source root" && return 1
  _check_build_config


  ## main build ##

  echo "Building optimized browser..."
  ./mach build
}

package() {
  cd "$srcdir/$pkgname-${pkgver%_*}"
  DESTDIR="$pkgdir" ./mach install

  local vendorjs="$pkgdir/usr/lib/$pkgname/browser/defaults/preferences/vendor.js"
  install -Dvm644 /dev/stdin "$vendorjs" <<END
// Use LANG environment variable to choose locale
pref("intl.locale.requested", "");

// Use system-provided dictionaries
pref("spellchecker.dictionary_path", "/usr/share/hunspell");

// Disable default browser checking.
pref("browser.shell.checkDefaultBrowser", false);

// Don't disable extensions in the application directory
pref("extensions.autoDisableScopes", 11);
END

  local distini="$pkgdir/usr/lib/$pkgname/distribution/distribution.ini"
  install -Dvm644 /dev/stdin "$distini" <<END
[Global]
id=parabola
version=1.0
about=Icecat for Parabola GNU/Linux-libre

[Preferences]
app.distributor=parabola
app.distributor.channel=$pkgname
app.partner.parabola=parabola
END

  local i theme=official
  for i in 16 22 24 32 48 64 128 256; do
    install -Dvm644 browser/branding/$theme/default$i.png \
      "$pkgdir/usr/share/icons/hicolor/${i}x${i}/apps/$pkgname.png"
  done
  install -Dvm644 browser/branding/$theme/content/icon64.png \
    "$pkgdir/usr/share/icons/hicolor/64x64/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/mozicon128.png \
    "$pkgdir/usr/share/icons/hicolor/128x128/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/content/about-logo.png \
    "$pkgdir/usr/share/icons/hicolor/192x192/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/content/about-logo@2x.png \
    "$pkgdir/usr/share/icons/hicolor/384x384/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/content/identity-icons-brand.svg \
    "$pkgdir/usr/share/icons/hicolor/symbolic/apps/$pkgname-symbolic.svg"

  install -Dvm644 ../$pkgname.desktop \
    "$pkgdir/usr/share/applications/$pkgname.desktop"

  # Install a wrapper to avoid confusion about binary path
  install -Dvm755 /dev/stdin "$pkgdir/usr/bin/$pkgname" <<END
#!/bin/sh
exec /usr/lib/$pkgname/$pkgname "\$@"
END


  ## [ARCH-SPECIFIC INSTALL] ##

  # TODO: this per-arch handling is yet to be re-worked for armv7h and i686
  case ${CARCH} in
    armv7h)
    ;;
    i686)
      # libxul.so cannot find it's libraries
#       install -dm 755 "${pkgdir}"/etc/ld.so.conf.d
#       echo "/usr/lib/${pkgname}" > "${pkgdir}"/etc/ld.so.conf.d/${pkgname}.conf
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC INSTALL] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac

  # Replace duplicate binary with wrapper
  # https://bugzilla.mozilla.org/show_bug.cgi?id=658850
  ln -srfv "$pkgdir/usr/bin/$pkgname" "$pkgdir/usr/lib/$pkgname/$pkgname-bin"

  # Use system certificates
  local nssckbi="$pkgdir/usr/lib/$pkgname/libnssckbi.so"
  if [[ -e $nssckbi ]]; then
    ln -srfv "$pkgdir/usr/lib/libnssckbi.so" "$nssckbi"
  fi
}