gn.yml

# Workflow to build Dawn using GN
name: GN

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      # Set fail-fast to false to ensure that feedback is delivered for all matrix combinations. Consider changing this to true when your workflow is stable.
      fail-fast: false

      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        gn_args: ['is_debug=true is_component_build=true is_clang=true']

    steps:
    - name: Set reusable strings
      # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
      id: strings
      shell: bash
      run: |
        echo "gclient-cache-dir=${{ github.workspace }}/.gclient_cache" >> "$GITHUB_OUTPUT"

    - name: Install Ubuntu build dependencies
      if: matrix.os == 'ubuntu-latest'
      run: |
        sudo apt update
        sudo apt install libgl-dev libx11-xcb-dev libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libxext-dev wayland-protocols libwayland-dev libxkbcommon-dev

    - name: Install Depot Tools
      uses: newkdev/setup-depot-tools@v1.0.1

    - uses: actions/checkout@v3

    - name: Set up checkout
      run: |
        cp ./scripts/standalone.gclient .gclient
        mkdir -p ${{ steps.strings.outputs.gclient-cache-dir }}

    - name: gclient restore cache
      id: gclient-restore
      uses: actions/cache/restore@v3
      with:
        path: ${{ steps.strings.outputs.gclient-cache-dir }}
        key: ${{ runner.os }}-${{ hashFiles('DEPS') }}
        restore-keys: ${{ runner.os }}-

    - name: gclient sync --no-history --shallow
      run: gclient sync --no-history --shallow
      env:
        GIT_CACHE_PATH: ${{ steps.strings.outputs.gclient-cache-dir }}
        DEPOT_TOOLS_WIN_TOOLCHAIN: 0

    - name: gclient save cache
      id: gclient-save
      uses: actions/cache/save@v3
      with:
        path: ${{ steps.strings.outputs.gclient-cache-dir }}
        key: ${{ steps.gclient-restore.outputs.cache-primary-key }}

    - name: Set up sccache
      uses: mozilla-actions/sccache-action@v0.0.3

    - name: Generate build files
      run: gn gen out/build --args='cc_wrapper=\"sccache\" ${{ matrix.gn_args }}'
      env:
        SCCACHE_GHA_ENABLED: "true"

    - name: Build
      run: autoninja -C out/build
      env:
        SCCACHE_GHA_ENABLED: "true"