name: build-and-test

on:
  push: {}
  pull_request: {}

jobs:
  # TODO: add 32-bit builds (g++ and clang++) for ubuntu
  #   (requires g++-multilib and libc6:i386)
  # TODO: add coverage build (requires lcov)
  # TODO: add clang + libc++ builds for ubuntu
  job:
    name: ${{ matrix.os }}.${{ matrix.build_type }}.${{ matrix.lib }}.${{ matrix.compiler }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, ubuntu-20.04, macos-latest]
        build_type: ['Release', 'Debug']
        compiler: [g++, clang++]
        lib: ['shared', 'static']

    steps:
      - uses: actions/checkout@v2

      - name: create build environment
        run: cmake -E make_directory ${{ runner.workspace }}/_build

      - name: setup cmake initial cache
        run: touch compiler-cache.cmake

      - name: setup lto
        # Workaround for enabling -flto on old GCC versions
        if: matrix.build_type == 'Release' && startsWith(matrix.compiler, 'g++') && matrix.os != 'macos-latest'
        run: >
          echo 'set (CMAKE_CXX_FLAGS -flto CACHE STRING "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_RANLIB /usr/bin/gcc-ranlib CACHE FILEPATH "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_AR /usr/bin/gcc-ar CACHE FILEPATH "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_NM /usr/bin/gcc-nm CACHE FILEPATH "")' >> compiler-cache.cmake;

      - name: configure cmake
        env:
          CXX: ${{ matrix.compiler }}
        shell: bash
        working-directory: ${{ runner.workspace }}/_build
        run: >
          cmake -C ${{ github.workspace }}/compiler-cache.cmake
          $GITHUB_WORKSPACE
          -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
          -DBUILD_SHARED_LIBS=${{ matrix.lib == 'shared' }}
          -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
          -DCMAKE_CXX_VISIBILITY_PRESET=hidden
          -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON

      - name: build
        shell: bash
        working-directory: ${{ runner.workspace }}/_build
        run: cmake --build . --config ${{ matrix.build_type }}

      - name: test
        shell: bash
        working-directory: ${{ runner.workspace }}/_build
        run: ctest -C ${{ matrix.build_type }} -VV

  msvc:
    name: ${{ matrix.os }}.${{ matrix.build_type }}.${{ matrix.lib }}.${{ matrix.msvc }}
    runs-on: ${{ matrix.os }}
    defaults:
        run:
            shell: powershell
    strategy:
      fail-fast: false
      matrix:
        msvc:
          - VS-16-2019
          - VS-17-2022
        arch:
          - x64
        build_type:
          - Debug
          - Release
        lib:
          - shared
          - static
        include:
          - msvc: VS-16-2019
            os: windows-2019
            generator: 'Visual Studio 16 2019'
          - msvc: VS-17-2022
            os: windows-2022
            generator: 'Visual Studio 17 2022'

    steps:
      - uses: actions/checkout@v2

      - name: configure cmake
        run: >
          cmake -S . -B _build/
          -A ${{ matrix.arch }}
          -G "${{ matrix.generator }}"
          -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
          -DBUILD_SHARED_LIBS=${{ matrix.lib == 'shared' }}

      - name: build
        run: cmake --build _build/ --config ${{ matrix.build_type }}

      - name: setup test environment
        # Make sure gmock and benchmark DLLs can be found
        run: >
            echo "$((Get-Item .).FullName)/_build/bin/${{ matrix.build_type }}" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append;
            echo "$((Get-Item .).FullName)/_build/src/${{ matrix.build_type }}" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append;

      - name: test
        run: ctest --test-dir _build/ -C ${{ matrix.build_type }} -VV

  ubuntu-16_04:
    name: ubuntu-16.04.${{ matrix.build_type }}.${{ matrix.compiler }}
    runs-on: [ubuntu-latest]
    strategy:
      fail-fast: false
      matrix:
        build_type: ['Release', 'Debug']
        compiler: [g++, clang++]
    container: ubuntu:16.04
    steps:
      - uses: actions/checkout@v2

      - name: install required bits
        run: |
          apt update
          apt -y install clang cmake g++ git

      - name: create build environment
        run: cmake -E make_directory $GITHUB_WORKSPACE/_build

      - name: setup cmake initial cache
        run: touch compiler-cache.cmake

      - name: setup lto
        # Workaround for enabling -flto on old GCC versions
        # -Wl,--no-as-needed is needed to avoid the following linker error:
        #
        #   /usr/lib/gcc/x86_64-linux-gnu/5/libstdc++.so: undefined reference to `pthread_create'
        #
        if: matrix.build_type == 'Release' && startsWith(matrix.compiler, 'g++')
        run: >
          echo 'set (CMAKE_CXX_FLAGS "-Wl,--no-as-needed -flto" CACHE STRING "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_RANLIB "/usr/bin/gcc-ranlib" CACHE FILEPATH "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_AR "/usr/bin/gcc-ar" CACHE FILEPATH "")' >> compiler-cache.cmake;
          echo 'set (CMAKE_NM "/usr/bin/gcc-nm" CACHE FILEPATH "")' >> compiler-cache.cmake;

      - name: configure cmake
        env:
          CXX: ${{ matrix.compiler }}
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: >
          cmake -C ../compiler-cache.cmake ..
          -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
          -DBUILD_SHARED_LIBS=${{ matrix.lib == 'shared' }}
          -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
          -DCMAKE_CXX_VISIBILITY_PRESET=hidden
          -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON

      - name: build
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: cmake --build . --config ${{ matrix.build_type }}

      - name: test
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: ctest -C ${{ matrix.build_type }} -VV

  ubuntu-14_04:
    name: ubuntu-14.04.${{ matrix.build_type }}.${{ matrix.compiler }}
    runs-on: [ubuntu-latest]
    strategy:
      fail-fast: false
      matrix:
        build_type: ['Release', 'Debug']
        compiler: [g++-4.8, clang++-3.6]
        include:
          - compiler: g++-6
            build_type: 'Debug'
            run_tests: true
          - compiler: g++-6
            build_type: 'Release'
            run_tests: true
    container: ubuntu:14.04
    steps:
      - uses: actions/checkout@v2

      - name: install required bits
        run: |
          sudo apt update
          sudo apt -y install clang-3.6 cmake3 g++-4.8 git

      - name: install other bits
        if: ${{ matrix.compiler }} == g++-6
        run: |
          sudo apt -y install software-properties-common
          sudo add-apt-repository -y "ppa:ubuntu-toolchain-r/test"
          sudo apt update
          sudo apt -y install g++-6

      - name: create build environment
        run: cmake -E make_directory $GITHUB_WORKSPACE/_build

      - name: setup cmake initial cache
        run: touch compiler-cache.cmake

      - name: setup lto
        # Workaround for enabling -flto on old GCC versions
        # -Wl,--no-as-needed is needed to avoid the following linker error:
        #
        #   /usr/lib/gcc/x86_64-linux-gnu/6/libstdc++.so: undefined reference to `pthread_create'
        #
        if: matrix.build_type == 'Release' && startsWith(matrix.compiler, 'g++')
        run: >
          COMPILER=${{ matrix.compiler }};
          VERSION=${COMPILER#g++-};
          PREFIX=/usr/bin/gcc;
          echo "set (CMAKE_CXX_FLAGS \"-Wl,--no-as-needed -flto\" CACHE STRING \"\")" >> compiler-cache.cmake;
          echo "set (CMAKE_RANLIB \"$PREFIX-ranlib-$VERSION\" CACHE FILEPATH \"\")" >> compiler-cache.cmake;
          echo "set (CMAKE_AR \"$PREFIX-ar-$VERSION\" CACHE FILEPATH \"\")" >> compiler-cache.cmake;
          echo "set (CMAKE_NM \"$PREFIX-nm-$VERSION\" CACHE FILEPAT \"\")" >> compiler-cache.cmake;

      - name: configure cmake
        env:
          CXX: ${{ matrix.compiler }}
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: >
          cmake -C ../compiler-cache.cmake ..
          -DBENCHMARK_DOWNLOAD_DEPENDENCIES=${{ matrix.run_tests }}
          -DBENCHMARK_ENABLE_TESTING=${{ matrix.run_tests }}
          -DBUILD_SHARED_LIBS=${{ matrix.lib == 'shared' }}
          -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
          -DCMAKE_CXX_VISIBILITY_PRESET=hidden
          -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON

      - name: build
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: cmake --build . --config ${{ matrix.build_type }}

      - name: test
        if: ${{ matrix.run_tests }}
        shell: bash
        working-directory: ${{ github.workspace }}/_build
        run: ctest -C ${{ matrix.build_type }} -VV