cmake-multi-platform.yml

name: CMake Builds

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

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

    strategy:
      fail-fast: false

      matrix:
        os: [ ubuntu-latest, windows-latest, macos-latest ]
        build_type: [ Debug, Release ]
        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++
          - os: macos-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
          - os: macos-latest
            c_compiler: cl
          - os: macos-latest
            c_compiler: gcc

    steps:
      - name: Install Ninja
        # Install Ninja, a build system that can be used as an alternative to make.
        # Ninja is faster and recommended for large projects.
        if: matrix.os == 'ubuntu-latest'
        run: sudo apt-get install ninja-build -y

      - uses: actions/checkout@v4

      - 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: Set the generator
        id: set-generator
        shell: bash
        run: |
          if [[ "${{ runner.os }}" == "Windows" ]]; then
            echo "generator='Visual Studio 17 2022'" >> "$GITHUB_OUTPUT"
          elif [[ "${{ runner.os }}" == "macOS" ]]; then
            echo "generator=Xcode" >> "$GITHUB_OUTPUT"
          else
            echo "generator=Ninja" >> "$GITHUB_OUTPUT"
          fi

      - name: Configure CMake
        run: >
          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 }}
          -S ${{ github.workspace }} -G ${{ steps.set-generator.outputs.generator }}

      - name: Build
        run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }} -j 4

      - name: Test
        working-directory: ${{ steps.strings.outputs.build-output-dir }}
        run: ctest --build-config ${{ matrix.build_type }}