cmake-multi-linux.yml

# This starter workflow is for a CMake project running on multiple platforms. There is a different starter workflow if you just want a single platform.
# See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-single-platform.yml
name: Linux gcc + clang

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

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true
  

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

      # Set up a matrix to run the following 3 configurations:
      # 1. <Linux, Release, latest GCC compiler toolchain on the default runner image, default generator>
      # 2. <Linux, Release, latest Clang compiler toolchain on the default runner image, default generator>
      #
      # To add more build types (Release, Debug, RelWithDebInfo, etc.) customize the build_type list.
      matrix:
        os: [ubuntu-latest]
        build_type: [Release]
        c_compiler: [gcc, clang]
        include:
          - os: ubuntu-latest
            c_compiler: gcc
            cpp_compiler: g++
          - os: ubuntu-latest
            c_compiler: clang
            cpp_compiler: clang++
    

    steps:
    - uses: actions/checkout@v3
    
        
    - 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
      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 }}

    - name: Build
      # Build your program with the given configuration. 
      run: cmake --build ${{ steps.strings.outputs.build-output-dir }}