python-wheels.yml

# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) Contributors to the OpenEXR Project.
#

name: Python Wheels

on:
  push:
    branches-ignore:
      - RB-2.*
    tags-ignore:
      - v1.*
      - v2.*
    paths:
      - '**'
      - '!**.md'
      - '!website/**'
      - 'website/src/**'
      - '!bazel/**'
  pull_request:
    branches-ignore:
      - RB-2.*
    tags-ignore:
      - v1.*
      - v2.*
    paths:
      - '**'
      - '!**.md'
      - '!website/**'
      - 'website/src/**'
      - '!bazel/**'

permissions:
  contents: read

jobs:
  build_openexr_libraries:
    name: Build OpenEXR Libraries
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
###        os: [ubuntu-22.04, windows-latest, macOS-latest]
        os: [ubuntu-22.04]

    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Create build directories
        run: |
          mkdir _build
          mkdir _install
      - name: Configure
        run: |
          cmake .. \
                -DCMAKE_INSTALL_PREFIX=../_install \
                -DCMAKE_VERBOSE_MAKEFILE:BOOL='ON' \
                -DBUILD_TESTING='OFF' \
                -DOPENEXR_BUILD_TOOLS='OFF' \
                -DOPENEXR_INSTALL_TOOLS='OFF' \
                -DOPENEXR_INSTALL_DOCS='OFF' \
                -DOPENEXR_INSTALL_EXAMPLES='OFF'
        working-directory: _build
      - name: Build & Install
        run: |
          cmake --build . \
                --target install
        working-directory: _build

      - uses: actions/cache@v3
        id: restore-build
        with:
          path: |
            _install/*
            src/wrappers/python/*
          key: ${{ runner.os }}-install-${{ github.sha }}
          restore-keys: ${{ runner.os }}-install-

  build_wheels:
    name: Build Python wheels
    needs: build_openexr_libraries
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
###        os: [ubuntu-22.04, windows-latest, macOS-latest]
        os: [ubuntu-22.04]

    env:
      # On macOS we build both x86 and arm to support Intel and Apple Silicon.
      CIBW_ARCHS_MACOS: x86_64 arm64 

      # Skip 32-bit wheels builds on Windows.
      # Also skip the PyPy builds, since they fail the unittests
      CIBW_SKIP: "*-win32 *_i686 pp*"

      # The CI platform is Intel based so we are doing cross compilation
      # for arm64. It is not currently possible to test arm64 when cross
      # compiling. 
      CIBW_TEST_SKIP: "*_arm64"
      CIBW_TEST_REQUIRES: pytest
      CIBW_TEST_COMMAND: pytest {project}/src/wrappers/python/tests/

      XXX_CMAKE_PREFIX_PATH: ${{github.workspace}}/_install

    steps:
      - uses: actions/cache@v3
        id: restore-build
        with:
          path: |
            _install/*
            src/wrappers/python/*
          key: ${{ runner.os }}-install-${{ github.sha }}
          restore-keys: ${{ runner.os }}-install-

      - uses: actions/setup-python@v4
        with:
            python-version: '3.x'

      - name: Install cibuildwheel
        run: python -m pip install cibuildwheel==2.16.2

      - name: Build wheels
        run: |
          find .
          cd src/wrappers/python
          env CMAKE_PREFIX_PATH=${{github.workspace}}/_install python -m cibuildwheel --output-dir wheelhouse

      - uses: actions/upload-artifact@v3
        with:
          name: "Python wheels"
          path: ./wheelhouse/*.whl