build_wheels.yml

# Build on every branch push, tag push, and pull request change:
# From: https://github.com/pypa/cibuildwheel/blob/main/examples/github-deploy.yml
# Also:
# https://github.com/airspeed-velocity/asv/blob/main/.github/workflows/build_wheels.yml
# include [wheel build] in the commit to trigger wheel builds
name: Build wheels
on: [push, pull_request, workflow_dispatch]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read # to fetch code (actions/checkout)

jobs:
  get_commit_message:
    name: Get commit message
    runs-on: ubuntu-latest
    outputs:
      message: ${{ steps.commit_message.outputs.message }}
    steps:
      - name: Checkout pyseldonlib
        uses: actions/checkout@v4
        # Gets the correct commit message for pull request
        with:
          ref: ${{ github.event.pull_request.head.sha }}
      - name: Get commit message
        id: commit_message
        run: |
          set -xe
          COMMIT_MSG=$(git log --no-merges -1 --oneline)
          echo "message=$COMMIT_MSG" >> $GITHUB_OUTPUT
          echo github.ref ${{ github.ref }}
  build_wheels:
    name: Build wheels
    needs: get_commit_message
    if: >-
      contains(needs.get_commit_message.outputs.message, '[wheel build]') ||
      github.event_name == 'schedule' ||
      github.event_name == 'workflow_dispatch' ||
      (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') && ( ! endsWith(github.ref, 'dev0')))
    runs-on: ${{ matrix.os }}
    env: # Needed for C++20 support on MacOS
      MACOSX_DEPLOYMENT_TARGET: '12.6'
    strategy:
      # Ensure that a wheel builder finishes even if another fails
      fail-fast: false
      matrix:
        # macos-13 is an intel runner, macos-14 is apple silicon
        os: [ubuntu-24.04, windows-2022, macos-13, macos-14]

    steps:
      - uses: actions/checkout@v4
      - name: Echo build platform
        run: echo Building wheels for ${{ matrix.os }}
      - name: Build wheels
        uses: pypa/cibuildwheel@v2.20.0
      - uses: actions/upload-artifact@v3
        with:
          path: ./wheelhouse/*.whl

  build_sdist:
    name: Build source distribution
    needs: get_commit_message
    if: >-
      contains(needs.get_commit_message.outputs.message, '[wheel build]') ||
      github.event_name == 'schedule' ||
      github.event_name == 'workflow_dispatch' ||
      (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') && ( ! endsWith(github.ref, 'dev0')))
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Build sdist
        shell: bash -l {0}
        run: pipx run build --sdist

      - uses: actions/upload-artifact@v3
        with:
          path: dist/*.tar.gz