build_wheels_macos.yml

name: Build  wheels

on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:
  release:
    types: [published]

permissions:  # Ensure the workflow has permission to push changes
  contents: write  # Allow write access for pushing to the repository

jobs:
  build_wheels:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [macos-latest]
        python-version: ["3.9"]

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

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

      - name: Clean up previous builds (if any)
        run: |
          rm -rf build dist *.egg-info class-sz/python/classy_sz.*so class-sz/python/classy_sz.*egg-info

      - name: Install cibuildwheel
        run: python -m pip install cibuildwheel==2.14.1

      # Build wheels for Linux (with custom build options)
      - name: Build wheels for Linux
        if: matrix.os == 'ubuntu-latest'
        env:
          CIBW_BEFORE_BUILD: "yum install -y gsl-devel fftw-devel"
          CIBW_ARCHS: aarch64
          CIBW_BUILD: cp39-manylinux_aarch64
        run: python -m cibuildwheel --output-dir wheelhouse

      - name: Install dependencies on macOS
        if: matrix.os == 'macos-latest'
        run: |
          brew install gsl fftw libomp
          chmod +x select_makefile.sh
          ./select_makefile.sh
          make clean

            # Check that omp.h is available in the include directory
          if [ -f /opt/homebrew/opt/libomp/include/omp.h ]; then
            echo "omp.h found"
          else
            echo "omp.h not found" && exit 1
          fi


          export LIBRARY_PATH=/opt/homebrew/opt/libomp/lib:$LIBRARY_PATH
          export C_INCLUDE_PATH=/opt/homebrew/opt/libomp/include:$C_INCLUDE_PATH
          export DYLD_LIBRARY_PATH=/opt/homebrew/opt/libomp/lib:$DYLD_LIBRARY_PATH # (Mac M1 users only)
        working-directory: class-sz
          
      # Build wheels for macOS (with Apple Silicon support)
      - name: Build wheels for macOS
        if: matrix.os == 'macos-latest'
        env:
          CIBW_ARCHS: "arm64"
          LDFLAGS: "-L/opt/homebrew/opt/libomp/lib"
          CPPFLAGS: "-I/opt/homebrew/opt/libomp/include"
        run: python -m cibuildwheel --output-dir wheelhouse

      - name: Build source distribution (sdist)
        run: python setup.py sdist bdist_wheel

      - uses: actions/upload-artifact@v4
        with:
          name: wheels-${{ matrix.os }}-${{ matrix.python-version }}
          path: wheelhouse/*.whl