name: llvm-chromium
version: "21"
summary: Clang used by Google's build of the Chromium web browser
source-code: https://code.launchpad.net/~chromium-team/+git/llvm-chromium/+ref/master
description: |
 Chromium and Chromium-ffmpeg snaps build with LLVM, but upstream relies on
 bleeding edge LLVM, in particular Clang. LLVM from the Ubuntu archive often
 cannot keep pace, therefore this snap.

 This snap exposes no commands. To use it, invoke the binaries directly,
 e.g. /snap/llvm-chromium/current/bin/clang or use the environment, i.e.

 * CC=/snap/llvm-chromium/current/bin/clang
 * CXX=/snap/llvm-chromium/current/bin/clang++
 * AR=/snap/llvm-chromium/current/bin/llvm-ar
 * ...
confinement: strict
base: core24

parts:
  llvm:
    plugin: nil
    # Roll when CLANG_REVISION changes.
    source: https://commondatastorage.googleapis.com/chromium-browser-official/chromium-135.0.7023.0.tar.xz
    build-packages:
      - chrpath
      - cmake
      - elfutils
      - g++
      - gperf
      - ninja-build
      - pkg-config
      - python3-pkg-resources
      - quilt
      - wget
      - yasm
    override-build: |
      # Find all patches that don't apply anymore before running Quilt, as it
      # stops at the 1st unappliable and doesn't tells us how the file looks.
      d=$CRAFT_PROJECT_DIR/patches
      while IFS= read -r p; do
        < "$d/$p" patch --dry-run -p1 -o "$d/$p.out" || cat "$d/$p.out"
      done < "$d/series"
      QUILT_PATCHES=$d quilt push -a

      # --pic for building shared library
      python3 tools/clang/scripts/build.py --skip-checkout --bootstrap \
              --disable-asserts --pgo --without-android --without-fuchsia \
              --use-system-cmake --with-ml-inliner-model= --pic --no-tools
      #Restore this when LP:2061075 is fixed
      #version="$(python3 tools/clang/scripts/update.py --print-revision|head -c31)"
      ## Trailing 'e' avoids "invalid snap version: must end with an ASCII
      ## alphanumeric or one of '+' or '~' (and not '-')"
      #craftctl set version="$version"e
      #craftctl set version=llvmorg-19-smth-smth
      arch=$(uname -m)
      # Save space by removing libraries from other architectures
      # XXX: bashism
      shopt -s extglob
      rm -rf third_party/llvm-build/Release+Asserts/lib/clang/*/lib/!(${arch%?}*gnu*)
      mkdir -p $CRAFT_PART_INSTALL
      mv third_party/llvm-build/Release+Asserts/bin $CRAFT_PART_INSTALL
      mv third_party/llvm-build/Release+Asserts/lib $CRAFT_PART_INSTALL