build_flang_windows.yml

name: Flang build for Windows (build only)

on:
  push:
    branches: [ master ]
    paths-ignore:
      - '**/.github/workflows/build_flang_arm64.yml'
      - '**/.github/workflows/build_flang.yml'
  pull_request:
    branches: [ master ]
    paths-ignore:
      - '**/.github/workflows/build_flang_arm64.yml'
      - '**/.github/workflows/build_flang.yml'

jobs:
  build-win:
    name: Windows build
    strategy:
      matrix:
        os:
          - windows-latest
          # - self-hosted
        llvm_branch: [release_15x]
        include:
          - os: windows-latest
            arch: amd64
            target: X86
          # Enable Windows on ARM build, when an official
          # self-hosted machine is available.
          #- os: self-hosted
          #  arch: arm64
          #  target: AArch64
    if: github.repository_owner == 'flang-compiler'
    runs-on: ${{ matrix.os }}

    steps:
      - name: Clean Workspace
        run: Remove-Item * -Recurse -Force

      # Checks-out your repository under $GITHUB_WORKSPACE, so the job can access it
      - uses: actions/checkout@v3

      - name: Setup Windows
        uses: llvm/actions/setup-windows@main
        with:
          arch: ${{ matrix.arch }}

      - name: Setup Ninja
        uses: llvm/actions/install-ninja@main

      - name: Setup Graphviz for Doxygen
        if: ${{ matrix.os == 'windows-latest'}}
        run: choco install  graphviz

      - name: Setup Sphinx
        if: ${{ matrix.os == 'windows-latest'}}
        run: pip install sphinx

      - name: Display path
        run: write-output ${env:PATH}

      - name: Check tools
        run: |
          git --version
          cmake --version
          clang --version
          ninja --version

      # Download artifacts for the classic-flang-llvm-project-related builds (all toolchains)
      - name: Download artifact
        run: |
          cd ../..
          Invoke-WebRequest -Uri https://api.github.com/repos/flang-compiler/classic-flang-llvm-project/actions/workflows/pre-compile_llvm.yml/runs -OutFile runs_llvm.json
          Invoke-WebRequest "$(jq -r '.workflow_runs[0].artifacts_url?' runs_llvm.json)" -OutFile artifacts_llvm

          $i=0
          # Keep checking older builds to find the right branch and correct number of artifacts
          while ( ( "$(jq -r '.total_count?' artifacts_llvm)" -ne "5" ) -or `
                  ( "$(jq -r --argjson i $i ".workflow_runs[$i].head_branch" runs_llvm.json)" -ne "${{ matrix.llvm_branch }}") -and `
                  ($i -lt 10)
                )
          {
            write-output "No artifacts or wrong branch in build $i, counting from latest"
            $i += 1
            Invoke-WebRequest -Uri "$(jq -r --argjson i $i ".workflow_runs[$i].artifacts_url" runs_llvm.json)" -OutFile artifacts_llvm
          }
          $url="$(jq -r '.artifacts[] | select(.name==\"llvm_build_win_${{ matrix.arch }}_clangcl_${{ matrix.llvm_branch }}\") | .archive_download_url' artifacts_llvm)"
          write-output "$($url)"
          $artifactPath = "$pwd\llvm_build_win_${{ matrix.arch }}_clangcl_${{ matrix.llvm_branch }}.zip"
          Invoke-RestMethod -Method Get -Uri $url -OutFile $artifactPath -Headers @{ "Authorization" = "Bearer ${{ secrets.GITHUB_TOKEN }}" }
          Expand-Archive -Force -Path llvm_build_win_${{ matrix.arch }}_clangcl_${{ matrix.llvm_branch }}.zip -DestinationPath .
          & 7z x "$pwd\llvm_build.7z" -o"$pwd\classic-flang-llvm-project\" -y
          write-output "$(Get-ChildItem)"

      - name: Build and install flang & libpgmath
        run: |
          $pcount = $($(Get-WmiObject -class Win32_ComputerSystem).numberoflogicalprocessors)
          python .\scripts\build_flang.py -d build -t ${{ matrix.target }} -p "$(pwd)\..\..\classic-flang-llvm-project\classic-flang-llvm-project\build\" -j $pcount -v
        shell: powershell

      - name: Copy llvm-lit
        run: |
          Copy-Item "$(pwd)\..\..\classic-flang-llvm-project\classic-flang-llvm-project\build\" -Destination build\bin\.

      - name: Test flang
        run: |
          echo "Flang tests aren't supported on Windows at the moment."