verification.yml

name: Verification
on: [ push, pull_request ]
env:
  LLVM_VERSION: 19
jobs:
  verification:
    runs-on: ubuntu-latest
    # Run on push OR on 3rd-party PR.
    # https://docs.github.com/en/webhooks/webhook-events-and-payloads?actionType=edited#pull_request
    if: >
      (github.event_name == 'push') ||
      github.event.pull_request.head.repo.fork
    strategy:
      matrix:
        # There shall be configurations with assertions enabled (no NDEBUG) and disabled to cover all cases.
        cmake_build_type: [ Debug, Release ]
        toolchain: [ clang, gcc ]
        flags: [ '-m32', '-m64' ]
        include:
          - toolchain: gcc
            cxx_compiler: g++
          - toolchain: clang
            cxx_compiler: clang++
    steps:
      - uses: actions/checkout@v6

      - name: Install dependencies # language=bash
        run: |
          wget -O llvm.sh https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh $LLVM_VERSION
          sudo apt-get -y install gcc-multilib g++-multilib clang-tidy-$LLVM_VERSION
          sudo ln -fs /usr/bin/clang-$LLVM_VERSION         /usr/bin/clang
          sudo ln -fs /usr/bin/clang++-$LLVM_VERSION       /usr/bin/clang++
          sudo ln -fs /usr/bin/clang-tidy-$LLVM_VERSION    /usr/bin/clang-tidy
          clang      --version
          clang++    --version
          clang-tidy --version

      - name: Run CMake # language=bash
        run: >
          cmake
          -B ${{ github.workspace }}/build
          -DCMAKE_BUILD_TYPE=${{          matrix.cmake_build_type }}
          -DCMAKE_CXX_COMPILER=${{        matrix.cxx_compiler }}
          -DCMAKE_CXX_FLAGS=${{           matrix.flags }}
          -DCMAKE_EXE_LINKER_FLAGS=${{    matrix.flags }}

      - name: Build all
        working-directory: ${{github.workspace}}/build
        run: make VERBOSE=1 -j$(nproc)

      - name: Run all tests
        working-directory: ${{github.workspace}}/build
        run: make test ARGS="--verbose"

      - name: Upload artifacts
        uses: actions/upload-artifact@v7
        if: always()
        with:
          # The matrix is shown for convenience but this is fragile because the values may not be string-convertible.
          # Shall it break one day, feel free to remove the matrix from here.
          # The job status is per matrix item, which is super convenient.
          name: ${{github.job}}-#${{strategy.job-index}}-${{job.status}}-${{join(matrix.*, ',')}}
          path: ${{github.workspace}}/
          if-no-files-found: error
          retention-days: 30
          compression-level: 9