name: linux

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-18.04
    strategy:
      matrix:
        cxx: [g++-4.8, g++-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
            std: 14
          - cxx: g++-10
            std: 17
          - cxx: g++-10
            std: 20
            cxxflags: -DFMT_COMPILE_TIME_CHECKS=1
          - cxx: clang++-9
            std: 11
          - cxx: clang++-9
            build_type: Debug
            fuzz: -DFMT_FUZZ=ON -DFMT_FUZZ_LINKMAIN=ON
            std: 17

    steps:
    - uses: actions/checkout@v2

    - name: Create Build Environment
      run: |
        ${{matrix.install}}
        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}} ${{matrix.fuzz}} \
              -DCMAKE_CXX_STANDARD=${{matrix.std}} -DFMT_DOC=OFF \
              -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE

    - name: Build
      working-directory: ${{runner.workspace}}/build
      run: cmake --build . --config ${{matrix.build_type}}

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