echo "::endgroup::"

    - name: Install GCC problem matcher

      uses: ammaraskar/gcc-problem-matcher@master

    - name: Build

      run: |

        mkdir build

        cd build

        echo "::group::CMake"

        emcmake cmake .. -DHOST_BINARY_DIR=../build-host

        echo "::endgroup::"

        echo "::group::Build"

        echo "Running on $(nproc) cores"

        emmake make -j$(nproc)

        echo "::endgroup::"

  linux:

    name: Linux

    strategy:

      fail-fast: false

      matrix:

        include:

          - compiler: clang

            cxxcompiler: clang++

          - compiler: gcc

            cxxcompiler: g++

    runs-on: ubuntu-20.04

    env:

      CC: ${{ matrix.compiler }}

      CXX: ${{ matrix.cxxcompiler }}

    steps:

    - name: Checkout

      uses: actions/checkout@v2

    - name: Install dependencies

      run: |

        echo "::group::Update apt"

        sudo apt-get update

        echo "::endgroup::"

        echo "::group::Install dependencies"

        sudo apt-get install -y --no-install-recommends \

          libfontconfig-dev \

          libicu-dev \

          liblzma-dev \

          liblzo2-dev \

          libsdl1.2-dev \

          libsdl2-dev \

          zlib1g-dev \

          # EOF

        echo "::endgroup::"

      env:

        DEBIAN_FRONTEND: noninteractive

    - name: Get OpenGFX

      run: |

        mkdir -p ~/.local/share/openttd/baseset

        cd ~/.local/share/openttd/baseset

        echo "::group::Download OpenGFX"

        curl -L https://cdn.openttd.org/opengfx-releases/0.6.0/opengfx-0.6.0-all.zip -o opengfx-all.zip

        echo "::endgroup::"

        echo "::group::Unpack OpenGFX"

        unzip opengfx-all.zip

        echo "::endgroup::"

        rm -f opengfx-all.zip

    - name: Install GCC problem matcher

      uses: ammaraskar/gcc-problem-matcher@master

    - name: Build

      run: |

        mkdir build

        cd build

        echo "::group::CMake"

        cmake ..

        echo "::endgroup::"

        echo "::group::Build"

        echo "Running on $(nproc) cores"

        make -j$(nproc)

        echo "::endgroup::"

    - name: Test

      run: |

        cd build

        make -j$(nproc) test