.github/workflows/bazel_build.yml

name: Bazel presubmit checks

on:
  push:
  pull_request:

jobs:
  bazel-build-check:
    strategy:
        matrix:
          # TODO: Windows is currently broken.
          os: [ubuntu-latest, macos-latest]
        fail-fast: false
    runs-on: ${{ matrix.os }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Get Bazel
        uses: bazel-contrib/setup-bazel@0.9.0
        with:
          # Avoid downloading Bazel every time.
          bazelisk-cache: true
          # Store build cache per workflow.
          disk-cache: ${{ github.workflow }}
          # Share repository cache between workflows.
          repository-cache: true
      # Only needed to drive the presbumit scripts.
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'
      - name: Fetch latest Picotool
        uses: actions/checkout@v4
        with:
          repository: raspberrypi/picotool
          ref: develop
          fetch-depth: 0
          path: lib/picotool
      - name: Full Bazel build with develop Picotool
        run: python3 tools/run_all_bazel_checks.py --program=build --picotool-dir=lib/picotool
      # Checks that the current BCR-requested version of Picotool builds.
      - name: Bazel Picotool backwards compatibility
        run: bazel build @picotool//:picotool
  other-bazel-checks:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Get Bazel
        uses: bazel-contrib/setup-bazel@0.9.0
        with:
          # Avoid downloading Bazel every time.
          bazelisk-cache: true
          # Store build cache per workflow.
          disk-cache: ${{ github.workflow }}
          # Share repository cache between workflows.
          repository-cache: true
      # Only needed to drive the presbumit scripts.
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'
      - name: Fetch latest Picotool
        uses: actions/checkout@v4
        with:
          repository: raspberrypi/picotool
          ref: develop
          fetch-depth: 0
          path: lib/picotool
      - name: Other Bazel checks
        run: python3 tools/run_all_bazel_checks.py --program=other --picotool-dir=lib/picotool

  bazel-9-build-check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Get Bazel
        uses: bazel-contrib/setup-bazel@0.9.0
        with:
          bazelisk-cache: true
          disk-cache: ${{ github.workflow }}-bazel9
          repository-cache: true
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'
      - name: Fetch latest Picotool
        uses: actions/checkout@v4
        with:
          repository: raspberrypi/picotool
          ref: develop
          fetch-depth: 0
          path: lib/picotool
      - name: Full Bazel build with Bazel 9
        env:
          # Use the latest released 9.x version
          # Ref https://github.com/bazelbuild/bazelisk/blob/master/README.md#how-does-bazelisk-know-which-bazel-version-to-run
          USE_BAZEL_VERSION: '9.x'
        run: python3 tools/run_all_bazel_checks.py --program=build --picotool-dir=lib/picotool