name: Linux builds (basic) using meson build system

on: [push, pull_request]

jobs:
  build:
    name: meson ${{matrix.cxx}}, C++${{matrix.std}}, ${{matrix.build_type}}
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        cxx:
          - g++-11
          - clang++-11
        build_type: [debug, release]
        std: [14, 17]
        include:
          - cxx: clang++-11
            other_pkgs: clang-11

    steps:
    - uses: actions/checkout@v2

    - name: Prepare environment
      run: sudo apt-get install -y meson ninja-build ${{matrix.other_pkgs}}

    - name: Configure build
      env:
        CXX: ${{matrix.cxx}}
        CXXFLAGS: -std=c++${{matrix.std}} ${{matrix.cxxflags}}
      # Note: $GITHUB_WORKSPACE is distinct from ${{runner.workspace}}.
      #       This is important
      run: |
        meson -Dbuildtype=${{matrix.build_type}} ${{runner.workspace}}/meson-build

    - name: Build tests + lib
      working-directory: ${{runner.workspace}}/meson-build
      run: ninja

    - name: Run tests
      working-directory: ${{runner.workspace}}/meson-build
      # Hardcode 2 cores we know are there
      run: |
        meson test --verbose
