ci-bazel.yml

name: "bazel"

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

# Cancel any preceding run on the pull request.
concurrency:
  group: bazel-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:
  build_direct: # Build p4c directly.
    runs-on: ubuntu-latest
    env:
      BAZEL: bazelisk-linux-amd64
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Mount bazel cache
        uses: actions/cache@v4
        with:
          # See https://docs.bazel.build/versions/master/output_directories.html
          path: "~/.cache/bazel"
          # Create cash entry for every run (by using unique key derived from commit hash).
          # See https://docs.github.com/en/actions/guides/caching-dependencies-to-speed-up-workflows
          key: ${{ runner.os }}-build-direct-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-build-direct-

      - name: Install bazelisk
        run: |
          curl -LO "https://github.com/bazelbuild/bazelisk/releases/download/v1.18.0/$BAZEL"
          chmod +x $BAZEL
          sudo mv $BAZEL /usr/local/bin/bazel

      - name: First, pass the lint test
        run: bazel run //:buildifier_check

      - name: Install Flex and Bison
        run: sudo apt-get update && sudo apt-get install bison flex libfl-dev

      - name: Build p4c
        run: bazel build //... --verbose_failures

  build_indirect: # Build 3rd party Bazel project depending on p4c as a subproject.
    runs-on: ubuntu-latest
    env:
      BAZEL: bazelisk-linux-amd64
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Mount bazel cache
        uses: actions/cache@v4
        with:
          # See https://docs.bazel.build/versions/master/output_directories.html
          path: "~/.cache/bazel"
          # Create cash entry for every run (by using unique key derived from commit hash).
          # See https://docs.github.com/en/actions/guides/caching-dependencies-to-speed-up-workflows
          key: ${{ runner.os }}-build-indirect-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-build-indirect-

      - name: First, pass the lint test
        run: bazel run //:buildifier_check

      - name: Install bazelisk
        run: |
          curl -LO "https://github.com/bazelbuild/bazelisk/releases/download/v1.18.0/$BAZEL"
          chmod +x $BAZEL
          sudo mv $BAZEL /usr/local/bin/bazel

      - name: Install Flex and Bison
        run: sudo apt-get update && sudo apt-get install bison flex libfl-dev

      - name: Build bazel/example
        run: cd ./bazel/example && bazel build //... --verbose_failures