build.yml

name: Build

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
  workflow_dispatch:

env:
  MM_DEFAULT_CONFIG: >-
    -DMEGAMOL_VCPKG_DOWNLOAD_CACHE=ON
    -DMEGAMOL_WARNING_LEVEL="Off"
    -DMEGAMOL_PLUGIN_MEGAMOL101_GL=ON
    -DMEGAMOL_USE_CGAL=ON
    -DMEGAMOL_USE_PROFILING=ON
    -DMEGAMOL_USE_STACKTRACE=ON
    -DMEGAMOL_USE_TRACY=ON
    -DMEGAMOL_USE_VTKM=ON
  MM_NO_GL_CONFIG: >-
    -DMEGAMOL_VCPKG_DOWNLOAD_CACHE=ON
    -DMEGAMOL_WARNING_LEVEL="Off"
    -DMEGAMOL_USE_OPENGL=OFF

jobs:
  vcpkg_cache:
    # Skip on PR from forked repo as no secrets are available.
    if: ${{ github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository }}
    strategy:
      fail-fast: false
      matrix:
        job:
          - name: 'Windows'
            os: 'windows-2022'
            container: ''
            generator: 'Visual Studio 17 2022'
            cc: ''
            cxx: ''
            ignore_features: 'MPI'
          - name: 'Ubuntu-GCC'
            os: 'ubuntu-24.04'
            container: 'ghcr.io/unistuttgart-visus/megamol_ci_ubuntu:master'
            generator: 'Ninja'
            cc: 'gcc-13'
            cxx: 'g++-13'
            ignore_features: 'CUESDK VR_INTEROP'
          - name: 'Ubuntu-Clang'
            os: 'ubuntu-24.04'
            container: 'ghcr.io/unistuttgart-visus/megamol_ci_ubuntu:master'
            generator: 'Ninja'
            cc: 'clang-18'
            cxx: 'clang++-18'
            ignore_features: 'CUESDK VR_INTEROP'
    name: "Vcpkg-${{ matrix.job.name }}"
    runs-on: ${{ matrix.job.os }}
    container:
      image: ${{ matrix.job.container }}
    steps:
      - uses: actions/checkout@v4
        with:
          show-progress: false
      - name: Download Vcpkg
        # Download vcpkg in advance, to download only once. MegaMol will detect the vcpkg directory in the repo root
        # folder automatically.
        run: |
          version=$(LC_ALL=C.UTF-8 grep -oP 'set\(MEGAMOL_VCPKG_VERSION "\K[^"]+' CMakeLists.txt)
          git clone https://github.com/microsoft/vcpkg.git vcpkg
          cd vcpkg && git reset --hard $version && cd ..
        shell: bash
      - name: Find MegaMol Feature Options
        run: |
          import json
          with open('vcpkg.json') as f:
              features = json.load(f)['features']
          features = [f.upper().replace('-', '_') for f in features if 'dependencies' in features[f]]
          ignored = '${{ matrix.job.ignore_features }}'.split()
          features = [f for f in features if f not in ignored]
          with open('MEGAMOL_FEATURES', 'w') as f:
              f.write(' '.join(features))
        shell: python3 {0}
      - name: Build Vcpkg Ports
        # Vcpkg ports may are required with different feature sets, based on the MegaMol features, e.g., `megamol`
        # requires `a` and `megamol[foo]` requires `a[bar]`. We need to build both `a` and `a[foo]` for the cache. The
        # problem extents to all transitive dependencies. Because we cannot try to build all possible combinations of
        # enabled MegaMol features, we use the following heuristic to hopefully cover most cases: 1. MegaMol with no
        # features, 2. MegaMol with all features, 3. For every feature MegaMol with only this feature enabled.
        run: |
          echo "::group::Build Cache No Features"
          cmake -S . -B "$GITHUB_WORKSPACE/build" -G "${{ matrix.job.generator }}" \
              -DMEGAMOL_STOP_AFTER_VCPKG=ON \
              -DMEGAMOL_DISABLE_ALL_FEATURES=ON
          rm -rf "$GITHUB_WORKSPACE/build"
          echo "::endgroup::"
          echo "::group::Build Cache All Features"
          cmake -S . -B "$GITHUB_WORKSPACE/build" -G "${{ matrix.job.generator }}" \
              -DMEGAMOL_STOP_AFTER_VCPKG=ON \
              -DMEGAMOL_ENABLE_ALL_FEATURES=ON \
              $(echo "${{ matrix.job.ignore_features }}" | sed -e 's/\([^ ]*\)/-DMEGAMOL_USE_\1=OFF/g')
          rm -rf "$GITHUB_WORKSPACE/build"
          echo "::endgroup::"
          features=$(<MEGAMOL_FEATURES)
          for feature in $features; do
            echo "::group::Build Cache Feature $feature"
            cmake -S . -B "$GITHUB_WORKSPACE/build" -G "${{ matrix.job.generator }}" \
                -DMEGAMOL_STOP_AFTER_VCPKG=ON \
                -DMEGAMOL_DISABLE_ALL_FEATURES=ON -DMEGAMOL_USE_$feature=ON
            rm -rf "$GITHUB_WORKSPACE/build"
            echo "::endgroup::"
          done
        shell: bash
        env:
          CC: ${{ matrix.job.cc }}
          CXX: ${{ matrix.job.cxx }}
          VCPKG_BINARY_SOURCES: "clear;http,https://vcpkg-cache.megamol.org/{triplet}-{name}-{sha},readwrite,Authorization: Token ${{ secrets.CACHING_SERVER_SECRET }}"
  build_windows:
    if: ${{ always() }}
    needs: vcpkg_cache
    strategy:
      fail-fast: false
      matrix:
        job:
          - name: 'Release'
            configuration: Release
            no-gl: false
          - name: 'Debug'
            configuration: Debug
            no-gl: false
          - name: 'Release-No-GL'
            configuration: Release
            no-gl: true
    name: "Windows-${{ matrix.job.name }}"
    runs-on: windows-2022
    steps:
      - uses: actions/checkout@v4
        with:
          show-progress: false
      - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
      - uses: seanmiddleditch/gha-setup-ninja@96bed6edff20d1dd61ecff9b75cc519d516e6401 # v5
        with:
          destination: $RUNNER_WORKSPACE/ninja-build
      - name: Configure
        run: >-
          cmake -S . -B $GITHUB_WORKSPACE/build -G "Ninja"
          ${{ matrix.job.no-gl && env.MM_NO_GL_CONFIG || env.MM_DEFAULT_CONFIG }}
      - name: Build
        run: cmake --build $GITHUB_WORKSPACE/build --config ${{ matrix.job.configuration }} --parallel 2
  build_linux:
    if: ${{ always() }}
    needs: vcpkg_cache
    strategy:
      fail-fast: false
      matrix:
        job:
          - name: 'GCC-Debug'
            container: megamol_ci_ubuntu
            cc: gcc-13
            cxx: g++-13
            configuration: Debug
            no-gl: false
          - name: 'Clang-Release'
            container: megamol_ci_ubuntu
            cc: clang-18
            cxx: clang++-18
            configuration: Release
            no-gl: false
          - name: 'GCC-Release-No-GL'
            container: megamol_ci_ubuntu
            cc: gcc-13
            cxx: g++-13
            configuration: Release
            no-gl: true
    name: "Linux-${{ matrix.job.name }}"
    runs-on: ubuntu-24.04
    container:
      image: ghcr.io/unistuttgart-visus/${{ matrix.job.container }}:master
    steps:
      - uses: actions/checkout@v4
        with:
          show-progress: false
      - name: Configure
        run: >-
          cmake -S . -B $GITHUB_WORKSPACE/build -G Ninja -DCMAKE_BUILD_TYPE=${{ matrix.job.configuration }}
          ${{ matrix.job.no-gl && env.MM_NO_GL_CONFIG || env.MM_DEFAULT_CONFIG }}
      - name: Build
        run: cmake --build $GITHUB_WORKSPACE/build
    env:
      CC: ${{ matrix.job.cc }}
      CXX: ${{ matrix.job.cxx }}