macos.yml

name: CI (macOS)

on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - release
    tags:
      - "v*"
  merge_group:
    branches:
      - main
  workflow_dispatch:

jobs:

  mac-os-build:
    name: macOS Homebrew install and test
    runs-on: macos-26
    env:
      PETSC_ARCH: arch-darwin-c-opt
      PETSC_DIR: ${{ github.workspace }}/petsc
      PETSC_VERSION: 3.24.4
      PYTEST_ADDOPTS: "-W error"

    steps:
      - uses: actions/checkout@v6

      - name: Load environment variables
        run: |
          cat .github/workflows/fenicsx-refs.env >> $GITHUB_ENV
          echo DYLD_LIBRARY_PATH=/usr/local/lib >> $GITHUB_ENV

      - name: Set up Python
        uses: actions/setup-python@v6
        id: cp3
        with:
          python-version: "3.14"

      - name: Install Homebrew dependencies
        run: |
          brew install adios2 boost catch2 hdf5-mpi make ninja open-mpi pkgconf pugixml spdlog # FEniCS
          brew install bison flex gfortran scalapack scotch # PETSc

      - name: Install Python dependencies (petsc4py)
        run: |
          pip install cython setuptools==80 wheel
          pip install mpi4py numpy

      - name: Restore cache PETSc and petsc4py
        id: cache-petsc-restore
        uses: actions/cache/restore@v5
        with:
          path: |
            ${{ env.PETSC_DIR }}
            ~/Library/Python/
          key: ${{ runner.os }}-petsc-${{ env.PETSC_VERSION }}-${{ steps.cp3.outputs.python-version }}

      - name: Install minimal PETSc and petsc4py
        if: steps.cache-petsc-restore.outputs.cache-hit != 'true'
        run: |
          export PATH="$(brew --prefix gfortran)/bin:$(brew --prefix bison)/bin:$PATH"
          export PATH="$(brew --prefix make)/libexec/gnubin:$PATH"
          git clone --depth 1 --branch v${PETSC_VERSION} https://gitlab.com/petsc/petsc.git petsc
          cd petsc
          ./configure \
            --with-64-bit-indices=no \
            --with-debugging=no \
            --with-fortran-bindings=no \
            --with-scalar-type=real \
            --with-shared-libraries \
            --with-scalar-type=real \
            --with-ptscotch-dir=$(brew --prefix scotch) \
            --with-scalapack-dir=$(brew --prefix scalapack) \
            --download-metis \
            --download-mumps \
            --download-mumps-avoid-mpi-in-place \
            --download-parmetis \
            --download-superlu_dist
          make all
          cd src/binding/petsc4py
          arch -arm64 pip -v install --user --no-build-isolation .

      - name: Save cache PETSc and petsc4py
        id: cache-petsc-save
        uses: actions/cache/save@v5
        with:
          path: |
            ${{ env.PETSC_DIR }}
            ~/Library/Python/
          key: ${{ steps.cache-petsc-restore.outputs.cache-primary-key }}

      - name: Install FEniCSx dependencies
        run: |
          pip install git+https://github.com/${{ env.ufl_repository }}.git@${{ env.ufl_ref }}
          pip install --config-settings=cmake.build-type="Developer" git+https://github.com/${{ env.basix_repository }}.git@${{ env.basix_ref }}
          pip install git+https://github.com/${{ env.ffcx_repository }}.git@${{ env.ffcx_ref }}

      - name: Configure (C++)
        working-directory: cpp
        run: >
          cmake -B build -S . -Werror=dev --warn-uninitialized -G Ninja \
            -DCMAKE_BUILD_TYPE=Developer -DBUILD_TESTING=true \
            -DDOLFINX_ENABLE_SCOTCH=true -DDOLFINX_ENABLE_PARMETIS=true \
            -DDOLFINX_ENABLE_PETSC=true -DDOLFINX_ENABLE_SUPERLU_DIST=true

      - name: Build and install (C++)
        working-directory: cpp/build
        run: |
          cmake --build .
          sudo cmake --install .

      - name: Run tests (C++)
        working-directory: cpp/build
        run: |
          ctest -V --output-on-failure -R unittests_np_1
          ctest -V --output-on-failure -R unittests_np_3

      - name: Build and install DOLFINx Python interface
        working-directory: python
        run: |
          pip install pyamg pybind11>=2.8.0 setuptools_scm[toml]==8.3.0
          pip install scikit-build-core
          python -m scikit_build_core.build requires | python -c "import sys, json; print(' '.join(json.load(sys.stdin)))" | xargs pip install
          pip install --check-build-dependencies --no-build-isolation --config-settings=cmake.build-type="Developer" './[test]'

      - name: Basic test
        run: |
          mpiexec -np 1 python -c "from mpi4py import MPI; import dolfinx; assert dolfinx.has_parmetis and dolfinx.has_petsc and dolfinx.has_superlu_dist and dolfinx.has_ptscotch"
          mpiexec -np 1 python -c "from mpi4py import MPI; import dolfinx; dolfinx.mesh.create_rectangle(comm=MPI.COMM_WORLD, points=((0, 0), (2, 1)), n=(32, 16))"
          mpiexec -np 2 python -c "from mpi4py import MPI; import dolfinx; dolfinx.mesh.create_rectangle(comm=MPI.COMM_WORLD, points=((0, 0), (2, 1)), n=(32, 16))"

      - name: Run tests (Python)
        run: |
          pip install pytest-xdist
          mkdir -p ~/.config/dolfinx
          echo '{ "cffi_extra_compile_args": ["-g0", "-O0" ] }' > ~/.config/dolfinx/dolfinx_jit_options.json
          mpiexec -np 1 python -m pytest -n=auto --durations=50 python/test/unit/
          mpiexec -np 3 python -m pytest python/test/unit/