cmake-multi-platform.yml

name: CMake on multiple platforms

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      # Set fail-fast to false to ensure that feedback is delivered for all matrix combinations. Consider changing this to true when your workflow is stable.
      fail-fast: false

      matrix:
        os: [ubuntu-latest, windows-latest]
        build_type: [Release, Debug]
        c_compiler: [gcc, clang, cl]
        include:
          - os: windows-latest
            c_compiler: cl
            cpp_compiler: cl
          - os: ubuntu-latest
            c_compiler: gcc
            cpp_compiler: g++
          - os: ubuntu-latest
            c_compiler: clang
            cpp_compiler: clang++
        exclude:
          - os: windows-latest
            c_compiler: gcc
          - os: windows-latest
            c_compiler: clang
          - os: ubuntu-latest
            c_compiler: cl

    steps:
    - name: Checkout code
      uses: actions/checkout@v3
      with:
        submodules: 'recursive'

    - name: Set reusable strings
      # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
      id: strings
      shell: bash
      run: |
        echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"

    - name: Configure CMake
      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
      shell: bash
      run: |
        if [[ "${{ matrix.c_compiler }}" != "cl" ]]; then
          CFLAGS="-Werror"
          CXXFLAGS="-Werror"
        fi
        cmake -B '${{ steps.strings.outputs.build-output-dir }}' \
        -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} \
        -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} \
        -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
        -DCMAKE_C_FLAGS=${CFLAGS:-} \
        -DCMAKE_CXX_FLAGS=${CXXFLAGS:-} \
        -S '${{ github.workspace }}'

    - name: Build
      # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
      run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}

    - name: Test
      working-directory: ${{ steps.strings.outputs.build-output-dir }}
      # Execute tests defined by the CMake configuration. Note that --build-config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
      run: ctest --build-config ${{ matrix.build_type }} --output-on-failure