package-build.yml

---
name: Package Build
on:
  pull_request_target:
  merge_group:
    types: [checks_requested]

jobs:
  ccache-build:
    name: CCache Build
    runs-on: ubuntu-latest
    container:
      image: ghcr.io/rpm-software-management/dnf-ci-host
    strategy:
      fail-fast: false  # don't fail all matrix jobs if one of them fails
      matrix:
        compiler: [gcc, clang]  # gcc is the default

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Configure CC CXX env variables
        id: configure_compiler
        run: |
          if [[ "${{matrix.compiler}}" == "clang" ]]; then
            echo "cxx=/usr/lib64/ccache/clang++" >> "$GITHUB_OUTPUT"
            echo "cc=/usr/lib64/ccache/clang" >> "$GITHUB_OUTPUT"
          else
            echo "cxx=/usr/lib64/ccache/g++" >> "$GITHUB_OUTPUT"
            echo "cc=/usr/lib64/ccache/gcc" >> "$GITHUB_OUTPUT"
          fi

      # make sure that for every build the GitHub Actions cache key is unique
      - name: Prepare CCache timestamp
        id: ccache_cache_timestamp
        run:
          echo "timestamp=$(date +%Y-%m-%d-%H:%M:%S)-UTC" >> "$GITHUB_OUTPUT"

      - name: Cache CCache files
        uses: actions/cache@v3
        with:
          path: ~/.cache/ccache
          # cache is saved with this hierarchy
          # dnf5-ccache-gcc-pr-main-111-2023-01-01-00:00:00-UTC
          #          -clang-pr-main-111-2023-01-01-00:00:00-UTC
          key: ${{ github.event.repository.name }}-ccache-${{ matrix.compiler }}-pr-${{ github.base_ref }}-${{ github.event.number }}-${{ steps.ccache_cache_timestamp.outputs.timestamp }}
          # we want to match the latest cache prioritizing the same PR (e.g.
          # 111), then the same branch (e.g. main), and, in all cases, we want
          # to match the project-compiler (gcc,clang) match by date is not
          # needed since caches are always matched by date.
          #
          # Example: dnf5-ccache-clang-pr-devel-111-2023-01-01-00:00:00-UTC will
          # try to fetch cache from the same pr, 111 against devel. if no pr is
          # found it will try to fetch any pr against devel branch.
          restore-keys: |
            ${{ github.event.repository.name }}-ccache-${{ matrix.compiler }}-pr-${{ github.base_ref }}-${{ github.event.number }}-

      - name: Zero CCache statistics
        run: ccache -z

      - name: Configure DNF5 with CMake
        run: CXX=${{ steps.configure_compiler.outputs.cxx }} CC=${{ steps.configure_compiler.outputs.cc }} cmake -S . -B build

      - name: Build DNF5
        id: ccache-build
        run: cmake --build build

      - name: Display CCache statistics
        run: ccache -s