toolchains/.github/workflows/build_toolchains.yml at main · RealtimeRoboticsGroup/toolchains · GitHub

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name: Build LLVM Toolchains

on:
  workflow_dispatch:
    inputs:
      llvm_version:
        description: 'LLVM version to build (e.g. 21.1.1)'
        required: true
        default: '21.1.1'
      force_rebuild:
        description: 'Force a complete rebuild of Clang'
        type: boolean
        required: false
        default: false
      aos_ref:
        description: 'Branch, tag, or commit ref of RealtimeRoboticsGroup/aos to retrieve the script'
        required: true
        default: 'main'

env:
  CCACHE_DIR: ${{ github.workspace }}/.ccache
  CMAKE_C_COMPILER_LAUNCHER: ccache
  CMAKE_CXX_COMPILER_LAUNCHER: ccache

jobs:
  build:
    name: Build LLVM (${{ matrix.os }} - ${{ matrix.arch }})
    runs-on: ${{ matrix.runner }}
    permissions:
      contents: write
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: linux
            arch: amd64
            runner: ubuntu-22.04
          - os: linux
            arch: arm64
            runner: ubuntu-24.04-arm
          - os: macos
            arch: arm64
            runner: macos-14

    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Checkout AOS repository
        uses: actions/checkout@v6
        with:
          repository: RealtimeRoboticsGroup/aos
          ref: ${{ github.event.inputs.aos_ref }}
          path: aos_repo

      - name: Install dependencies (Linux)
        if: matrix.os == 'linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake ninja-build clang lld zstd ccache zlib1g-dev libzstd-dev

      - name: Install dependencies (macOS)
        if: matrix.os == 'macos'
        run: |
          brew install cmake ninja zstd ccache

      - name: Setup ccache
        uses: actions/cache@v6
        with:
          path: .ccache
          key: ccache-${{ matrix.os }}-${{ matrix.arch }}-${{ github.event.inputs.llvm_version }}-${{ github.run_id }}
          restore-keys: |
            ccache-${{ matrix.os }}-${{ matrix.arch }}-${{ github.event.inputs.llvm_version }}-
            ccache-${{ matrix.os }}-${{ matrix.arch }}-

      - name: Configure ccache
        run: |
          ccache --set-config=max_size=2G
          ccache -z

      - name: Run Build Script
        run: |
          python3 aos_repo/tools/helpers/build_from_llvm.py \
            --llvm-version ${{ github.event.inputs.llvm_version }} \
            --clang \
            --libcxx msan \
            --tempdir /tmp/llvm-build \
            --force-redownload \
            ${{ github.event.inputs.force_rebuild == 'true' && '--clang-force-rebuild' || '' }}

      - name: Show ccache stats
        run: |
          ccache -s

      - name: Publish to GitHub Release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ github.event.inputs.llvm_version }}"

          # Create the release if it doesn't exist, ignore if duplicate/exists
          gh release create "$TAG" \
            --title "$TAG" \
            --notes "Automated LLVM and MSan toolchain builds." 2>/dev/null || true

          # Upload all generated .tar.zst packages directly
          gh release upload "$TAG" /tmp/llvm-build/*.tar.zst --clobber