ci.yml

name: Main
on:
  push:
    branches:
      - master
      - tape-push
      - coverity_scan
  pull_request:
    branches:
      - master
      - tape-push
      - coverity_scan

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  build:
    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:

        include:
          - name: osx14-arm-clang-runtime13
            os: macos-14
            compiler: clang
            clang-runtime: '13'

          - name: osx14-arm-clang-runtime14
            os: macos-14
            compiler: clang
            clang-runtime: '14'

          - name: osx14-arm-clang-runtime15
            os: macos-14
            compiler: clang
            clang-runtime: '15'

          - name: osx14-arm-clang-runtime16
            os: macos-14
            compiler: clang
            clang-runtime: '16'

          - name: osx14-arm-clang-runtime17
            os: macos-14
            compiler: clang
            clang-runtime: '17'
          #Turn on once clang-18 available through Homebrew
          #- name: osx14-arm-clang-runtime18
          #  os: macos-14
          #  compiler: clang
          #  clang-runtime: '18'

          - name: osx13-x86-clang-runtime12
            os: macos-13
            compiler: clang
            clang-runtime: '12'

          - name: osx13-x86-clang-runtime13
            os: macos-13
            compiler: clang
            clang-runtime: '13'

          - name: osx13-x86-clang-runtime14
            os: macos-13
            compiler: clang
            clang-runtime: '14'

          - name: osx13-x86-clang-runtime15
            os: macos-13
            compiler: clang
            clang-runtime: '15'

          - name: osx13-x86-clang-runtime16
            os: macos-13
            compiler: clang
            clang-runtime: '16'

          - name: osx13-x86-clang-runtime17
            os: macos-13
            compiler: clang
            clang-runtime: '17'
          #Turn on once clang-18 available through Homebrew
          #- name: osx13-x86-clang-runtime18
          #  os: macos-13
          #  compiler: clang
          #  clang-runtime: '18'

          - name: win2022-msvc-runtime14
            os: windows-2022
            compiler: msvc
            clang-runtime: '14'

          - name: win2022-msvc-runtime15
            os: windows-2022
            compiler: msvc
            clang-runtime: '15'

          - name: win2022-msvc-runtime16
            os: windows-2022
            compiler: msvc
            clang-runtime: '16'

          - name: win2022-msvc-runtime17
            os: windows-2022
            compiler: msvc
            clang-runtime: '17'

          - name: win2022-msvc-runtime18
            os: windows-2022
            compiler: msvc
            clang-runtime: '18'

          - name: ubu22-clang15-runtime16-debug
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '16'
            debug_build: true

          - name: ubu20-gcc7-runtime18-analyzers
            os: ubuntu-20.04
            compiler: gcc-7
            clang-runtime: '18'
            coverage: true
            cuda: true
            #extra_cmake_options: '-DCLAD_ENABLE_ENZYME_BACKEND=On'
            #clang-format: true

          - name: selfh-ubu22-gcc11-runtime18-analyzers
            os: self-hosted #ubuntu-22.04
            compiler: gcc-11
            clang-runtime: '18'
            coverage: true
            cuda: true
            #extra_cmake_options: '-DCLAD_ENABLE_ENZYME_BACKEND=On'
            #clang-format: true

          - name: ubu20-gcc7-runtime11-benchmarks
            os: ubuntu-20.04
            compiler: gcc-7
            clang-runtime: '11'
            extra_cmake_options: '-DCLAD_ENABLE_BENCHMARKS=On -DCLAD_ENABLE_ENZYME_BACKEND=On'
            benchmark: true

          - name: ubu20-gcc8-runtime11-coverity
            os: ubuntu-20.04
            compiler: gcc-8
            clang-runtime: '11'
            coverity: true

          - name: ubu20-gcc9-runtime9
            os: ubuntu-20.04
            compiler: gcc-9
            clang-runtime: '9'

          - name: ubu20-clang8-runtime9
            os: ubuntu-20.04
            compiler: clang-8
            clang-runtime: '9'

          - name: ubu20-clang9-runtime9
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '9'

          - name: ubu20-gcc7-runtime10
            os: ubuntu-20.04
            compiler: gcc-7
            clang-runtime: '10'

          - name: ubu20-gcc8-runtime10
            os: ubuntu-20.04
            compiler: gcc-8
            clang-runtime: '10'

          - name: ubu20-gcc9-runtime10
            os: ubuntu-20.04
            compiler: gcc-9
            clang-runtime: '10'

          - name: ubu20-clang8-runtime10
            os: ubuntu-20.04
            compiler: clang-8
            clang-runtime: '10'

          - name: ubu20-clang9-runtime10
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '10'

          - name: ubu20-gcc7-runtime11
            os: ubuntu-20.04
            compiler: gcc-7
            clang-runtime: '11'

          - name: ubu20-gcc8-runtime11
            os: ubuntu-20.04
            compiler: gcc-8
            clang-runtime: '11'

          - name: ubu20-gcc9-runtime11
            os: ubuntu-20.04
            compiler: gcc-9
            clang-runtime: '11'

          - name: ubu20-clang8-runtime11
            os: ubuntu-20.04
            compiler: clang-8
            clang-runtime: '11'

          - name: ubu20-clang9-runtime11
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '11'

          - name: ubu20-gcc7-runtime12
            os: ubuntu-20.04
            compiler: gcc-7
            clang-runtime: '12'

          - name: ubu20-gcc8-runtime12
            os: ubuntu-20.04
            compiler: gcc-8
            clang-runtime: '12'

          - name: ubu20-gcc9-runtime12
            os: ubuntu-20.04
            compiler: gcc-9
            clang-runtime: '12'

          - name: ubu20-clang8-runtime12
            os: ubuntu-20.04
            compiler: clang-8
            clang-runtime: '12'

          - name: ubu20-clang9-runtime12
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '12'

          - name: ubu20-clang9-runtime10-cuda
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '10'
            cuda: true

          - name: selfh-ubu22-clang16-runtime18-cuda
            os: self-hosted #ubuntu-22.04
            runs-on: cuda
            compiler: clang-16
            clang-runtime: '18'
            cuda: true

          - name: ubu20-clang9-runtime15
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '15'

          - name: ubu20-clang9-runtime16
            os: ubuntu-20.04
            compiler: clang-9
            clang-runtime: '16'

          - name: ubu22-gcc9-runtime11
            os: ubuntu-22.04
            compiler: gcc-9
            clang-runtime: '11'

          - name: ubu22-gcc10-runtime11
            os: ubuntu-22.04
            compiler: gcc-10
            clang-runtime: '11'

          - name: ubu22-gcc11-runtime11
            os: ubuntu-22.04
            compiler: gcc-11
            clang-runtime: '11'

          - name: ubu22-clang11-runtime11
            os: ubuntu-22.04
            compiler: 'clang-11'
            clang-runtime: '11'

          - name: ubu22-clang12-runtime11
            os: ubuntu-22.04
            compiler: clang-12
            clang-runtime: '11'

          - name: ubu22-clang13-runtime11
            os: ubuntu-22.04
            compiler: clang-13
            clang-runtime: '11'

          - name: ubu22-clang14-runtime11
            os: ubuntu-22.04
            compiler: clang-14
            clang-runtime: '11'

          - name: ubu22-clang15-runtime11
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '11'

          - name: ubu22-gcc9-runtime12
            os: ubuntu-22.04
            compiler: gcc-9
            clang-runtime: '12'

          - name: ubu22-gcc10-runtime12
            os: ubuntu-22.04
            compiler: gcc-10
            clang-runtime: '12'

          - name: ubu22-gcc11-runtime12
            os: ubuntu-22.04
            compiler: gcc-11
            clang-runtime: '12'

          - name: ubu22-clang11-runtime12
            os: ubuntu-22.04
            compiler: 'clang-11'
            clang-runtime: '12'

          - name: ubu22-clang12-runtime12
            os: ubuntu-22.04
            compiler: clang-12
            clang-runtime: '12'

          - name: ubu22-clang13-runtime12
            os: ubuntu-22.04
            compiler: clang-13
            clang-runtime: '12'

          - name: ubu22-clang14-runtime12
            os: ubuntu-22.04
            compiler: clang-14
            clang-runtime: '12'

          - name: ubu22-clang15-runtime12
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '12'

          - name: ubu22-gcc10-runtime13
            os: ubuntu-22.04
            compiler: gcc-10
            clang-runtime: '13'

          - name: ubu22-gcc11-runtime13
            os: ubuntu-22.04
            compiler: gcc-11
            clang-runtime: '13'

          - name: ubu22-gcc12-runtime13
            os: ubuntu-22.04
            compiler: gcc-12
            clang-runtime: '13'

          - name: ubu22-clang11-runtime13
            os: ubuntu-22.04
            compiler: clang-11
            clang-runtime: '13'

          - name: ubu22-clang12-runtime13
            os: ubuntu-22.04
            compiler: clang-12
            clang-runtime: '13'

          - name: ubu22-clang13-runtime13
            os: ubuntu-22.04
            compiler: clang-13
            clang-runtime: '13'

          - name: ubu22-clang14-runtime13
            os: ubuntu-22.04
            compiler: clang-14
            clang-runtime: '13'

          - name: ubu22-clang15-runtime13
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '13'

          - name: ubu22-gcc10-runtime14
            os: ubuntu-22.04
            compiler: gcc-10
            clang-runtime: '14'

          - name: ubu22-gcc11-runtime14
            os: ubuntu-22.04
            compiler: gcc-11
            clang-runtime: '14'

          - name: ubu22-gcc12-runtime14
            os: ubuntu-22.04
            compiler: gcc-12
            clang-runtime: '14'

          - name: ubu22-gcc12-runtime15
            os: ubuntu-22.04
            compiler: gcc-12
            clang-runtime: '15'

          - name: ubu22-gcc12-runtime16
            os: ubuntu-22.04
            compiler: gcc-12
            clang-runtime: '16'

          - name: ubu22-clang11-runtime14
            os: ubuntu-22.04
            compiler: clang-11
            clang-runtime: '14'

          - name: ubu22-clang12-runtime14
            os: ubuntu-22.04
            compiler: clang-12
            clang-runtime: '14'

          - name: ubu22-clang13-runtime14
            os: ubuntu-22.04
            compiler: clang-13
            clang-runtime: '14'

          - name: ubu22-clang14-runtime14
            os: ubuntu-22.04
            compiler: clang-14
            clang-runtime: '14'

          - name: ubu22-clang14-runtime15
            os: ubuntu-22.04
            compiler: clang-14
            clang-runtime: '15'

          - name: ubu22-clang15-runtime14
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '14'

          - name: ubu22-clang15-runtime15
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '15'

          - name: ubu22-clang15-runtime16
            os: ubuntu-22.04
            compiler: clang-15
            clang-runtime: '16'

          - name: ubuntu-clang15-runtime16-doc
            os: ubuntu-latest
            compiler: clang-15
            clang-runtime: '16'
            doc_build: true

          - name: ubu22-clang16-runtime17
            os: ubuntu-22.04
            compiler: clang-16
            clang-runtime: '17'

          - name: ubu22-clang16-runtime17-shared-libs
            os: ubuntu-22.04
            compiler: clang-16
            extra_cmake_options: '-DBUILD_SHARED_LIBS=On'
            clang-runtime: '17'

          - name: ubu22-clang16-runtime17-kokkos
            os: ubuntu-22.04
            compiler: clang-16
            clang-runtime: '17'
            extra_packages: 'libtrilinos-kokkos-dev ninja-build'
            extra_cmake_options: '-G Ninja'

          - name: ubu22-clang16-runtime18
            os: ubuntu-22.04
            compiler: clang-16
            clang-runtime: '18'

          # Оld, still supported versions

          - name: ubu20-gcc9-runtime8
            os: ubuntu-20.04
            compiler: gcc-9
            clang-runtime: '8'

    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: 3.11
    - name: Save PR Info
      if: ${{ matrix.coverage == true }}
      run: |
        mkdir -p ./pr
        echo ${{ github.event.number }} > ./pr/NR
        echo ${{ github.repository }} > ./pr/REPO
    - uses: actions/upload-artifact@v4
      if: ${{ matrix.coverage == true }}
      with:
        name: pr
        path: pr/
        overwrite: true
    - uses: nelonoel/branch-name@v1.0.1
    - name: Setup default Build Type on *nux (coverity)
      if: ${{ (matrix.debug_build != true) && (runner.os != 'windows') }}
      run: |
        echo "BUILD_TYPE=Release" >> $GITHUB_ENV
        echo "CLAD_CODE_COVERAGE=0" >> $GITHUB_ENV
    - name: Setup default Build Type on *nux (build_debug & asserts)
      if: ${{ (matrix.debug_build == true) && (runner.os != 'windows') }}
      run: |
        echo "BUILD_TYPE=Debug" >> $GITHUB_ENV
    - name: Setup default Build Type on Windows
      if: runner.os == 'windows'
      run: |
        $env:BUILD_TYPE="Release"
        $env:CLAD_CODE_COVERAGE="0"
        echo "BUILD_TYPE=Release" >> $env:GITHUB_ENV
        echo "CLAD_CODE_COVERAGE=0" >> $env:GITHUB_ENV
    - name: Download Coverity Build Tool - Linux
      if: ${{ (matrix.coverity == true) && (runner.os == 'Linux') }}
      run: |
        # FIXME: Ideally the check should be in the if: block of the action
        if [ "$BRANCH_NAME" == "coverity_scan" ]; then
          # wget -q https://scan.coverity.com/download/cxx/linux64 --post-data "token=$TOKEN&project=vgvassilev/clad" -O cov-analysis-linux64.tar.gz
          mkdir cov-analysis-linux64
          # tar xzf cov-analysis-linux64.tar.gz --strip 1 -C cov-analysis-linux64
          echo "BUILD_TYPE=Debug" >> $GITHUB_ENV
          echo "$GITHUB_WORKSPACE/cov-analysis-linux64/bin" >> $GITHUB_PATH
        fi
      # env:
      #  TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
    - name: Setup Ubuntu apt sources
      if: runner.os == 'Linux'
      run: |
        if ! sudo apt install -y llvm-${{ matrix.clang-runtime }}-dev ; then
          curl https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
          os_codename="`cat /etc/os-release | grep UBUNTU_CODENAME | cut -d = -f 2`"
          echo "deb https://apt.llvm.org/${os_codename}/ llvm-toolchain-${os_codename}-${{ matrix.clang-runtime }} main" | sudo tee -a /etc/apt/sources.list
          sudo apt update
        fi
        sudo apt install -y llvm-${{ matrix.clang-runtime }}-dev \
                         llvm-${{ matrix.clang-runtime }}-tools \
                         clang-${{ matrix.clang-runtime }} \
                         libclang-${{ matrix.clang-runtime }}-dev \
                         ${{ matrix.extra_packages }}

    - name: Setup compiler on Linux
      if: runner.os == 'Linux'
      run: |
        # https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html
        vers="${compiler#*-}"
        os_codename="`cat /etc/os-release | grep UBUNTU_CODENAME | cut -d = -f 2`"
        sudo apt update
        if [[ "${{ matrix.compiler }}" == *"gcc"* ]]; then
          sudo apt install -y gcc-${vers} g++-${vers}
          echo "CC=gcc-${vers}" >> $GITHUB_ENV
          echo "CXX=g++-${vers}" >> $GITHUB_ENV
        else
          if ! sudo apt install -y clang-${vers}; then
            curl https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
            echo "deb https://apt.llvm.org/${os_codename}/ llvm-toolchain-${os_codename}-${vers} main" | sudo tee -a /etc/apt/sources.list
            sudo apt update
            sudo apt install -y clang-${vers}
          fi
          echo "CC=clang-${vers}" >> $GITHUB_ENV
          echo "CXX=clang++-${vers}" >> $GITHUB_ENV
        fi
      env:
        compiler: ${{ matrix.compiler }}
    - name: Setup compiler on macOS
      if: runner.os == 'macOS'
      run: |
        if [[ "${{ matrix.compiler }}" == *"clang"* ]]; then
          echo "CC=clang" >> $GITHUB_ENV
          echo "CXX=clang++" >> $GITHUB_ENV
        else
          echo "Unsupported compiler - fix YAML file"
        fi
    - name: Setup compiler on Windows
      if: runner.os == 'windows'
      run: |
        if ( "${{ matrix.compiler }}" -imatch "clang" )
        {
          $ver="${{ matrix.compiler }}".split("-")[1]
          choco install llvm --version=$ver --no-progress -my
          $env:PATH_TO_LLVM_BUILD="$env:ProgramFiles\LLVM"
          echo "PATH_TO_LLVM_BUILD=$env:PATH_TO_LLVM_BUILD"
          echo "PATH_TO_LLVM_BUILD=$env:PATH_TO_LLVM_BUILD" >> $env:GITHUB_ENV
          clang --version
          #
          $env:CC="clang"
          $env:CXX="clang++"
          echo "CC=clang" >> $env:GITHUB_ENV
          echo "CXX=clang++" >> $env:GITHUB_ENV
        }
        elseif ( "${{ matrix.compiler }}" -imatch "msvc" )
        {
          # MSVC is builtin in container image
        }
        else
        {
          echo "Unsupported compiler - fix YAML file"
        }
    - name: Setup LLVM/Clang on macOS
      if: runner.os == 'macOS'
      run: |
        #brew update
        brew install --ignore-dependencies llvm
        brew install z3
        # Update openssl on osx because the current one is deprecated by python.
        curl -L https://bootstrap.pypa.io/get-pip.py | sudo python3
        echo "/usr/local/opt/ccache/libexec" >> $GITHUB_PATH

        # For now Package llvm@18 is unsuported on brew, llvm <=@11 are deprecated or deleted.
        # Install llvm from github releases.
        if [[ '${{ matrix.clang-runtime }}' == '18' || ${{ matrix.clang-runtime }} -le 11 ]]; then
          PATH_TO_LLVM_BUILD=/usr/local/opt/llvm@${{ matrix.clang-runtime }}/
          pushd /usr/local/opt
          w="0"
          [ '${{ matrix.clang-runtime }}' == '17' ] && w="6"
          sudo curl -L https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.clang-runtime }}.0.$w/clang+llvm-${{ matrix.clang-runtime }}.0.$w-x86_64-apple-darwin.tar.xz | sudo xz -d -c | sudo tar -x
          sudo rm -fr /usr/local/clang*
          sudo mv clang+llvm-${{ matrix.clang-runtime }}.0.$w-x86_64-apple-darwin/ llvm@${{ matrix.clang-runtime }}/
          # Use llvm/llvm@10/llvm@6 Filecheck
          if [[ ! -f $PATH_TO_LLVM_BUILD/bin/FileCheck ]]; then
            if [[ -f /usr/local/opt/llvm/bin/FileCheck ]]; then
              sudo ln -s /usr/local/opt/llvm/bin/FileCheck $PATH_TO_LLVM_BUILD/bin/FileCheck
            elif [[ -f /usr/local/opt/llvm\@10/bin/FileCheck ]]; then
              sudo ln -s /usr/local/opt/llvm\@10/bin/FileCheck $PATH_TO_LLVM_BUILD/bin/FileCheck
            elif [[ -f /usr/local/opt/llvm\@6/bin/FileCheck ]]; then
              sudo ln -s /usr/local/opt/llvm\@6/bin/FileCheck $PATH_TO_LLVM_BUILD/bin/FileCheck
            fi
          fi
          popd
        fi

        if [[ '${{ matrix.clang-runtime }}' != '18' && ${{ matrix.clang-runtime }} -gt 11 ]]; then
          brew install llvm@${{ matrix.clang-runtime }}
        else
          # Remove the c++ headers that come with the llvm package from homebrew
          # allowing clang to work with system's SDK.
          sudo rm -fr /usr/local/opt/llvm*/include/c++
        fi
        
        PATH_TO_LLVM_BUILD=$(brew --prefix llvm@${{ matrix.clang-runtime }})
        
        pip3 install lit # LLVM lit is not part of the llvm releases...

        # We need headers in correct place
        #FIXME: ln solution fails with error message No such file or directory on osx arm, 
        #Copying over files as a temporary solution
        sudo cp -r -n $(xcrun --show-sdk-path)/usr/include/ /usr/local/include/
        #for file in $(xcrun --show-sdk-path)/usr/include/*
        #do
        #  if [ ! -f /usr/local/include/$(basename $file) ]; then
        #    echo ${file}
        #    ln -s ${file} /usr/local/include/$(basename $file)
        #  fi
        #done
        # We need PATH_TO_LLVM_BUILD later
        echo "PATH_TO_LLVM_BUILD=$PATH_TO_LLVM_BUILD" >> $GITHUB_ENV

    - name: Restore Cache LLVM/Clang runtime build directory (debug_build==true)
      if: ${{ (matrix.debug_build == true) && (runner.os != 'windows') }}
      uses: actions/cache/restore@v4
      id: cache
      with:
        path: |
          llvm-project
        key: ${{ matrix.os }}-clang-${{ matrix.clang-runtime }}.x-${{ env.BUILD_TYPE }}
    - name: Build LLVM/Cling on Unix if the cache is invalid (debug_build==true)
      if: ${{ (matrix.debug_build == true) && (runner.os != 'windows') && (steps.cache.outputs.cache-hit != 'true') }}
      run: |
        os="${{ matrix.os }}"
        git clone --depth=1 -b release/${{ matrix.clang-runtime }}.x https://github.com/llvm/llvm-project.git
        cd llvm-project
        # Build
        mkdir build
        cd build
        export CPU_COUNT="$(nproc --all)"
        cmake \
              -DLLVM_ENABLE_PROJECTS="clang"        \
              -DLLVM_TARGETS_TO_BUILD="host;NVPTX"  \
              -DCMAKE_BUILD_TYPE=`[[ -z "$BUILD_TYPE" ]] && echo RelWithDebInfo || echo $BUILD_TYPE` \
              -DLLVM_ENABLE_ASSERTIONS=ON           \
              -DCLANG_ENABLE_STATIC_ANALYZER=OFF    \
              -DCLANG_ENABLE_ARCMT=OFF              \
              -DCLANG_ENABLE_FORMAT=OFF             \
              -DCLANG_ENABLE_BOOTSTRAP=OFF          \
              -DLLVM_ENABLE_TERMINFO=OFF            \
              -DCLANG_INCLUDE_TESTS=OFF             \
              -DCLANG_INCLUDE_DOCS=OFF              \
              -DLLVM_INCLUDE_TESTS=OFF              \
              -DLLVM_INCLUDE_DOCS=OFF               \
              ../llvm
        cmake --build . --target clang FileCheck llvm-config clang-repl --parallel ${CPU_COUNT}
        cd ../../
    - name: Save Cache LLVM/Clang runtime build directory (debug_build==true)
      uses: actions/cache/save@v4
      if: ${{ (matrix.debug_build == true) && (runner.os != 'windows') && (steps.cache.outputs.cache-hit != 'true') }}
      with:
        path: |
          llvm-project
        key: ${{ steps.cache.outputs.cache-primary-key }}
    - name: Set LLVM/Cling build path on Unix (debug_build==true)
      if: ${{ (matrix.debug_build == true) && (runner.os != 'windows') }}
      run: |
        export PATH_TO_LLVM_BUILD="$PWD/llvm-project/build"
        echo "PATH_TO_LLVM_BUILD=$PATH_TO_LLVM_BUILD"
        echo "PATH_TO_LLVM_BUILD=$PATH_TO_LLVM_BUILD" >> $GITHUB_ENV
        pip3 install lit # LLVM lit is not part of the llvm releases...
        vers="${compiler#*-}"
        if [[ ! -f "$PATH_TO_LLVM_BUILD/bin/FileCheck" ]]; then
          ln -s /usr/bin/FileCheck-$vers $PATH_TO_LLVM_BUILD/bin/FileCheck
        fi
      env:
        compiler: ${{ matrix.compiler }}

    - name: Setup LLVM/Clang on Linux
      if: ${{ (runner.os == 'Linux') && (matrix.debug_build != true) }}
      run: |
        UNIX_DISTRO=$(lsb_release -rs)
        PATH_TO_LLVM_BUILD=/usr/lib/llvm-${{ matrix.clang-runtime }}/
        # llvm-8-tools is broken as it depends on python2.7 we use FileCheck from llvm-7-tools
        if [[ '${{ matrix.clang-runtime }}' == '8' ]]; then
          if [[ ! -f $PATH_TO_LLVM_BUILD/bin/FileCheck ]]; then
            sudo apt install -y llvm-9-dev llvm-9-tools
            sudo ln -s /usr/lib/llvm-9/bin/FileCheck $PATH_TO_LLVM_BUILD/bin/FileCheck
          fi
        fi
        # Add -H to silence 'The directory '/home/..../pip/http' or its parent
        # directory is not owned by the current user and the cache has been disabled.
        pip3 install lit # LLVM lit is not part of the llvm releases...
        # We need PATH_TO_LLVM_BUILD later
        echo "PATH_TO_LLVM_BUILD=$PATH_TO_LLVM_BUILD" >> $GITHUB_ENV
    - name: Setup LLVM/Clang on Windows
      if: ${{ runner.os == 'windows' }}
      run: |
        C:\Miniconda\condabin\conda.bat install -y -c conda-forge "clangdev=${{ matrix.clang-runtime }}"
        $env:PATH_TO_LLVM_BUILD="$env:CONDA\Library"
        pip3 install lit # LLVM lit is not part of the llvm releases...
        echo "Runtime LLVM/Clang: $env:PATH_TO_LLVM_BUILD"
        echo "PATH_TO_LLVM_BUILD=$env:PATH_TO_LLVM_BUILD"
        echo "PATH_TO_LLVM_BUILD=$env:PATH_TO_LLVM_BUILD" >> $env:GITHUB_ENV
    - name: Setup CUDA 8 on Linux
      if: ${{ matrix.cuda == true && !matrix.os == 'self-hosted'}}
      run: |
        wget --no-verbose https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda_8.0.61_375.26_linux-run
        wget --no-verbose https://developer.nvidia.com/compute/cuda/8.0/Prod2/patches/2/cuda_8.0.61.2_linux-run
        sh ./cuda_8.0.61_375.26_linux-run --tar mxvf
        sudo cp InstallUtils.pm /usr/lib/x86_64-linux-gnu/perl-base
        export $PERL5LIB
        sudo sh cuda_8.0.61_375.26_linux-run --override --no-opengl-lib --silent --toolkit --kernel-source-path=/lib/modules/4.15.0-1113-azure/build
        sudo sh cuda_8.0.61.2_linux-run --silent --accept-eula
        export PATH=/usr/local/cuda-8.0/bin:${PATH}
        export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/cuda-8.0/lib64
        echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH" >> $GITHUB_ENV
        echo "PATH=$PATH" >> $GITHUB_ENV
    - name: Setup code coverage
      if: ${{ (matrix.coverage == true) }}
      run: |
        sudo apt install -y lcov
        echo "CLAD_CODE_COVERAGE=1" >> $GITHUB_ENV
        echo "BUILD_TYPE=Debug" >> $GITHUB_ENV
    - name: Display config *nix
      if: ${{ runner.os != 'windows' }}
      run: |
        cmake --version
        $CC --version
        $CXX --version
        xz --version
        tar --version
        echo "Use Clang/LLVM in $PATH_TO_LLVM_BUILD"
        echo "Building clad in `[[ -z "$BUILD_TYPE" ]] && echo RelWithDebInfo || echo $BUILD_TYPE`"
        python3 --version
    - name: Display config Windows
      if: ${{ runner.os == 'windows' }}
      run: |
        cmake --version
        echo "CC=$env:CC"
        if ( "$env:CC" -ne "" )
        {
          Start-Process -Wait -FilePath "$env:CC" -Verb RunAs -ArgumentList '--version'
        }
        echo "CXX=$env:CXX"
        if ( "$env:CXX" -ne "" )
        {
          Start-Process -Wait -FilePath "$env:CXX" -Verb RunAs -ArgumentList '--version'
        }
        xz --version
        tar --version
        echo "Use Clang/LLVM in $env:PATH_TO_LLVM_BUILD"
        echo "Building clad in $env:BUILD_TYPE"
        python3 --version
    - name: Build Clad on *nix
      if: ${{ runner.os != 'windows' }}
      run: |
        mkdir obj && cd obj
        cmake -DClang_DIR=${{ env.PATH_TO_LLVM_BUILD }}  \
          -DLLVM_DIR=${{ env.PATH_TO_LLVM_BUILD }}       \
          -DCMAKE_BUILD_TYPE=$([[ -z "$BUILD_TYPE" ]] && echo RelWithDebInfo || echo $BUILD_TYPE) \
          -DCLAD_CODE_COVERAGE=${{ env.CLAD_CODE_COVERAGE }}   \
          -DLLVM_EXTERNAL_LIT="`which lit`" \
          -DLLVM_ENABLE_WERROR=On           \
          $GITHUB_WORKSPACE                 \
          ${{ matrix.extra_cmake_options }}

        cmake --build . -- -j4
    - name: Build Clad on Windows
      if: ${{ matrix.coverity == false && runner.os == 'windows' }}
      run: |
        mkdir obj
        cd obj
        if ( "$env:BUILD_TYPE" -eq "" )
        {
          $env:BUILD_TYPE="RelWithDebInfo"
        }
        if ( "$env:CLAD_CODE_COVERAGE" -eq "" )
        {
          $env:CLAD_CODE_COVERAGE="0"
        }
        ((Get-Content -path C:/Miniconda/Library/lib/cmake/llvm/LLVMConfig.cmake -Raw) -replace 'LLVM_ENABLE_DIA_SDK ON','LLVM_ENABLE_DIA_SDK OFF') | Set-Content -Path C:/Miniconda/Library/lib/cmake/llvm/LLVMConfig.cmake
        $lit = @(which lit)
        cmake -DClang_DIR="$env:PATH_TO_LLVM_BUILD" -DLLVM_DIR="$env:PATH_TO_LLVM_BUILD" -DCMAKE_BUILD_TYPE="$env:BUILD_TYPE" -DCLAD_CODE_COVERAGE="$env:CLAD_CODE_COVERAGE" -DCLAD_BUILD_STATIC_ONLY="ON" -DLLVM_EXTERNAL_LIT="$lit" "$env:GITHUB_WORKSPACE" ${{ matrix.extra_cmake_options }}
        cmake --build . --config Release
    - name: Build Clad for Coverity Scan
      if: ${{ matrix.coverity == true }}
      run: |
        # FIXME: Ideally the check should be in the if: block of the action
        if [ "$BRANCH_NAME" == "coverity_scan" ]; then
          if [[ "${{ matrix.compiler }}" == "gcc-8" ]]; then
            mkdir obj && cd obj
            cmake -DClang_DIR="$PATH_TO_LLVM_BUILD" \
              -DLLVM_DIR="$PATH_TO_LLVM_BUILD" \
              -DCMAKE_BUILD_TYPE=$([[ -z "$BUILD_TYPE" ]] && echo RelWithDebInfo || echo $BUILD_TYPE) \
              $GITHUB_WORKSPACE
            cov-build --dir cov-out cmake --build .  -- -j4
          else
            echo "Coverity Scan can only be triggered for GCC 6. Fix Github Actions YAML"
            exit 1
          fi
        else
          echo "This action only runs on branch coverity_scan"
        fi
    - name: Test Clad on *nix
      if: ${{ matrix.coverity == false && runner.os != 'windows' }}
      run: |
        cd obj
        cmake --build . --target check-clad -- -j4
    - name: Test Clad on Windows
      if: ${{ matrix.coverity == false && runner.os == 'windows' }}
      run: |
        cd obj
        #cmake --build . --target check-clad
    - name: Benchmark Clad
      if: ${{ matrix.benchmark }}
      run: |
        cd obj
        cmake --build . --target benchmark-clad -j4
        cd ..

        # Get the performance for previous version. If it were a PR the master
        # or the previous hash
        hash=$([[ -z "${{ github.event.pull_request }}" ]] && echo ${{ github.event.before }} || echo ${{ github.event.pull_request.base.sha }})
        echo "Running git checkout '$hash'"
        git checkout $hash
        cd obj
        cmake --build . --target clean -- -j4
        cmake --build . --target benchmark-clad -j4

        # Compare:
        pip3 install -r ./googlebenchmark-prefix/src/googlebenchmark/tools/requirements.txt
        COMPARER="$(pwd)/googlebenchmark-prefix/src/googlebenchmark/tools/compare.py"
        cd benchmark
        for baseline in *-$hash.json
        do
          common=${baseline%$hash.json}
          pr_change=$(find . ! -name "*$hash.json" -name "$common*.json")

          echo "Running 'python3 ${COMPARER} benchmarks '${baseline}' '${pr_change}''"
          python3 ${COMPARER} benchmarks ${baseline} ${pr_change}
        done

        cd ..
    - name: Test build sphinx & doxygen documentation
      if: ${{ (matrix.doc_build == true) }}
      run: |
        sudo apt-get install -y doxygen graphviz
        pip install --upgrade pip
        pip install -r requirements.txt
        mkdir -p obj && cd obj
        cmake \
          -DClang_DIR="$PATH_TO_LLVM_BUILD" \
          -DLLVM_DIR="$PATH_TO_LLVM_BUILD"  \
          -DCLAD_INCLUDE_DOCS=ON            \
          -DCLAD_ENABLE_DOXYGEN=ON          \
          -DCLAD_ENABLE_SPHINX=ON           \
          -DCMAKE_INSTALL_PREFIX=../inst    \
          -DCMAKE_BUILD_TYPE=Debug          \
          -DLLVM_EXTERNAL_LIT="`which lit`" \
          ..
        cmake --build . --target sphinx-clad doxygen-clad -- -j4
    - name: Failed job config
      if: ${{ failure() && runner.os != 'windows' }}
      env:
        GITHUB_CONTEXT: ${{ toJson(github) }}
      run: |
        echo "$GITHUB_CONTEXT"
        export
        if [[ "runner.os" == "Linux" ]]; then
          apt-mark showhold
          dpkg-query -L libclang-${{ matrix.clang-runtime }}-dev
          dpkg-query -L clang-${{ matrix.clang-runtime }}
          dpkg-query -L llvm-${{ matrix.clang-runtime }}-dev
          find /usr/lib/llvm-${{ matrix.clang-runtime }}/
        fi
        if [[ "runner.os" == "macOS" ]]; then
          brew search llvm
          find /usr/local/opt/llvm@*/
        fi
        pip show lit
        cat obj/CMakeCache.txt
        cat obj/CMakeFiles/*.log
    - name: Setup tmate session
      if: ${{ runner.debug }}
      uses: mxschmitt/action-tmate@v3
      # When debugging increase to a suitable value!
      timeout-minutes: 30
    - name: Prepare code coverage report
      if: ${{ success() && (matrix.coverage == true) }}
      run: |
        # Create lcov report
        # capture coverage info
        vers="${CC#*-}"
        lcov --directory . --capture --output-file coverage.info --gcov-tool /usr/bin/gcov-${vers}
        # filter out system and extra files.
        # To also not include test code in coverage add them with full path to the patterns: '*/tests/*'
        lcov --remove coverage.info '/usr/*' "${HOME}"'/.cache/*' \
          "$GITHUB_WORKSPACE"'/test/*' "$GITHUB_WORKSPACE"'/unittests/*' \
          --output-file coverage.info
        # output coverage data for debugging (optional)
        lcov --list coverage.info

    - name: Upload to codecov.io
      if: ${{ success() && (matrix.coverage == true) }}
      uses: codecov/codecov-action@v4
      with:
        file: ./coverage.info
        fail_ci_if_error: true
        verbose: true
        token: ${{ secrets.CODECOV_TOKEN }}

    - name: Upload report to coverity_scan
      if: ${{ success() && (matrix.coverity == true) }}
      run: |
        # FIXME: Ideally the check should be in the if: block of the action
        if [ "$BRANCH_NAME" == "coverity_scan" ]; then
          # Upload to coverity
          tar czvf clad.tgz cov-out
          # curl \
          #   --form project=vgvassilev/clad \
          #   --form token=$TOKEN \
          #   --form email=v.g.vassilev@gmail.com \
          #   --form file=@clad.tgz \
          #   --form version=trunk \
          #   --form description=""Clad build submitted via Travis CI"" \
          #   https://scan.coverity.com/builds?project=vgvassilev/clad
        else
          echo "This action only runs on branch coverity_scan"
        fi
      # env:
      #  TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}