.github/workflows/build_wheels.yml

name: Build Python Wheels

on:
  workflow_dispatch:

env:
  BUILD_TYPE: Release
  MIN_CIBUILDWHEEL_VERSION: 2.16.2
  PYTHON_VERSION: 3.x

jobs:
  build_sdist:
    name: Source distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        name: Install Python
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install build package
        run: python -m pip install build --user

      - name: Build sdist
        run: python -m build --sdist --outdir dist

      - uses: actions/upload-artifact@v4
        with:
          name: sdist
          path: dist/*.tar.gz
          compression-level: 0 # contents are already compressed


  build_wheels:
    name: ${{ matrix.config.name }}
    runs-on: ${{ matrix.config.os }}
    strategy:
      matrix:
        config:
        - {
            name: "MacOS Latest (Intel)",
            os: macos-latest,
            cibw-arch: macosx_x86_64
          }
        - {
            name: "MacOS Latest (Apple Silicon)",
            os: macos-latest,
            cibw-arch: macosx_arm64
          }
        - {
            name: "Ubuntu Latest (x86_64, manylinux)",
            os: ubuntu-latest,
            cibw-arch: manylinux_x86_64,
          }
        - {
            name: "Ubuntu Latest (ARM64, manylinux)",
            os: ubuntu-latest,
            cibw-arch: manylinux_aarch64,
            use-qemu: true
          }
        - {
            name: "Ubuntu Latest (x86_64, musllinux)",
            os: ubuntu-latest,
            cibw-arch: musllinux_x86_64
          }
        - {
            name: "Ubuntu Latest (ARM64, musllinux)",
            os: ubuntu-latest,
            cibw-arch: musllinux_aarch64,
            use-qemu: true
          }
        - {
            name: "Windows Latest",
            os: windows-latest,
            cibw-arch: win_amd64
          }

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Set up QEMU for linux/arm64 builds
        if: runner.os == 'Linux' && matrix.config.use-qemu == true
        uses: docker/setup-qemu-action@v3
        with:
          platforms: arm64

      - name: Install Python dependencies
        run: python -m pip install cibuildwheel~=${{ env.MIN_CIBUILDWHEEL_VERSION }}

      - name: Build wheels
        run: python -m cibuildwheel --output-dir dist
        env:
          CIBW_ENVIRONMENT_MACOS: CMAKE_OSX_ARCHITECTURES=${{ matrix.config.cibw-arch == 'macosx_x86_64' && 'x86_64' || matrix.config.cibw-arch == 'macosx_arm64' && 'arm64' || '' }}
          CIBW_BUILD: "*-${{ matrix.config.cibw-arch }}"
          MACOSX_DEPLOYMENT_TARGET: "10.14" # min supporting c++17

      - uses: actions/upload-artifact@v4
        with:
          name: wheels-${{ matrix.config.os }}-${{ matrix.config.cibw-arch }}
          path: ./dist/*.whl
          compression-level: 0 # contents are already compressed


  aggregate_artifacts:
    name: Aggregate artifacts
    runs-on: ubuntu-latest
    needs: [build_sdist, build_wheels]
    steps:
      - name: Merge Artifacts
        uses: actions/upload-artifact/merge@v4
        with:
          name: python_wheels
          compression-level: 0
          delete-merged: true