name: linux

on: [push, pull_request]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        cxx: [g++-4.8, g++-10, clang++-9]
        build_type: [Debug, Release]
        std: [11]
        include:
          - cxx: g++-4.8
            install: sudo apt install g++-4.8
          - cxx: g++-8
            build_type: Debug
            std: 14
            install: sudo apt install g++-8
          - cxx: g++-8
            build_type: Debug
            std: 17
            install: sudo apt install g++-8
          - cxx: g++-9
            build_type: Debug
            std: 17
          - cxx: g++-10
            build_type: Debug
            std: 17
          - cxx: g++-11
            build_type: Debug
            std: 20
            install: sudo apt install g++-11
          - cxx: clang++-8
            build_type: Debug
            std: 17
            cxxflags: -stdlib=libc++
            install: sudo apt install clang-8 libc++-8-dev libc++abi-8-dev
          - cxx: clang++-9
            install: sudo apt install clang-9
          - cxx: clang++-9
            build_type: Debug
            fuzz: -DFMT_FUZZ=ON -DFMT_FUZZ_LINKMAIN=ON
            std: 17
            install: sudo apt install clang-9
          - cxx: clang++-11
            build_type: Debug
            std: 20
          - cxx: clang++-11
            build_type: Debug
            std: 20
            cxxflags: -stdlib=libc++
            install: sudo apt install libc++-11-dev libc++abi-11-dev
          - shared: -DBUILD_SHARED_LIBS=ON

    steps:
    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0

    - name: Set timezone
      run: sudo timedatectl set-timezone 'Asia/Yekaterinburg'

    - name: Add repositories for older GCC
      run: |
        # Below two repos provide GCC 4.8, 5.5 and 6.4
        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic main'
        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic universe'
        # Below two repos additionally update GCC 6 to 6.5
        # sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic-updates main'
        # sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic-updates universe'
      if: ${{ matrix.cxx == 'g++-4.8' }}

    - name: Add ubuntu mirrors
      run: |
        # Github Actions caching proxy is at times unreliable
        # see https://github.com/actions/runner-images/issues/7048
        printf 'http://azure.archive.ubuntu.com/ubuntu\tpriority:1\n' | sudo tee /etc/apt/mirrors.txt
        curl http://mirrors.ubuntu.com/mirrors.txt | sudo tee --append /etc/apt/mirrors.txt
        sudo sed -i 's~http://azure.archive.ubuntu.com/ubuntu/~mirror+file:/etc/apt/mirrors.txt~' /etc/apt/sources.list

    - name: Create Build Environment
      run: |
        sudo apt update
        ${{matrix.install}}
        sudo apt install locales-all
        cmake -E make_directory ${{runner.workspace}}/build

    - name: Configure
      working-directory: ${{runner.workspace}}/build
      env:
        CXX: ${{matrix.cxx}}
        CXXFLAGS: ${{matrix.cxxflags}}
      run: |
        cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} ${{matrix.fuzz}} ${{matrix.shared}} \
              -DCMAKE_CXX_STANDARD=${{matrix.std}} -DFMT_DOC=OFF \
              -DCMAKE_CXX_VISIBILITY_PRESET=hidden -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON \
              -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE

    - name: Build
      working-directory: ${{runner.workspace}}/build
      run: |
        threads=`nproc`
        cmake --build . --config ${{matrix.build_type}} --parallel $threads

    - name: Test
      working-directory: ${{runner.workspace}}/build
      run: ctest -C ${{matrix.build_type}}
      env:
        CTEST_OUTPUT_ON_FAILURE: True