Add new workflow for building Python wheels

.github/workflows/build-wheels.yml

@@ -0,0 +1,92 @@
+name: Build Python wheels and make PyPI release
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - '.github/workflows/build-wheels.yml'
+      - 'python/**'
+      - 'src/**'
+      - 'CMakeLists.txt'
+      - 'setup.py'
+      - 'pyproject.toml'
+    branches: [master]
+  release:
+    types: [published]
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-22.04, macos-11, windows-2019]
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Set up QEMU
+        if: runner.os == 'Linux'
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: all
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.15.0
+        env:
+          # Configure cibuildwheel to build native archs, and some emulated ones
+          CIBW_ARCHS_LINUX: x86_64 aarch64
+          CIBW_ARCHS_MACOS: x86_64
+          CIBW_ARCHS_WINDOWS: x86_64
+          CIBW_BUILD_VERBOSITY: 3
+          CIBW_REPAIR_WHEEL_COMMAND_LINUX: >
+            auditwheel show {wheel} && auditwheel repair -w {dest_dir} {wheel}
+
+      - name: Report built wheels
+        run: |
+          ls -l ./wheelhouse/*.whl
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          path: ./wheelhouse/*.whl
+
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Build sdist
+        run: pipx run build --sdist
+
+      - name: Upload sdist
+        uses: actions/upload-artifact@v3
+        with:
+          path: dist/*.tar.gz
+
+  upload_pypi:
+    name: Upload to PyPI
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    environment: pypi
+    permissions:
+      id-token: write
+    if: github.event_name == 'release' && github.event.action == 'published'
+    steps:
+      - name: Download all dists
+        uses: actions/download-artifact@v3
+        with:
+          # Unpacks default artifact into dist/
+          # If `name: artifact` is omitted, the action will create extra parent dir
+          name: artifact
+          path: dist
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}

.github/workflows/cpp-build.yml → .github/workflows/cpp-test-build.yml

@@ -3,7 +3,7 @@ name: C++ build
 on:
   push:
     paths:
-      - '.github/workflows/cpp-build.yml'
+      - '.github/workflows/cpp-test-build.yml'
       - 'src/**'
       - 'CMakeLists.txt'
 

.github/workflows/python-build.yml → .github/workflows/python-test-build.yml

@@ -3,7 +3,7 @@ name: Python build
 on:
   push:
     paths:
-      - '.github/workflows/python-build.yml'
+      - '.github/workflows/python-test-build.yml'
       - 'python/**'
       - 'src/**'
       - 'CMakeLists.txt'

pyproject.toml

@@ -1,2 +1,24 @@
 [build-system]
-requires = ["cmake>=3.13.0", "cmaketools", "setuptools", "wheel"]
+requires = ["cmake>=3.13.0", "cmaketools", "setuptools", "wheel"]
+
+[tool.cibuildwheel]
+# We need to build for the following Python versions:
+build = "cp{38,39,310,311,312}-*"
+
+[tool.cibuildwheel.linux]
+# Only manylinux is supported (no musl)
+build = "cp{38,39,310,311,312}-manylinux*"
+
+# For manylinux2014 we need to install the following dependencies using yum:
+before-all = "yum install -y cmake"
+
+# Only build for x86_64 and aarch64 are officially supported
+archs = "x86_64 aarch64"
+manylinux-x86_64-image = "manylinux2014"
+manylinux-aarch64-image = "manylinux2014"
+
+[tool.cibuildwheel.macos]
+before-all = "brew install cmake"
+
+[tool.cibuildwheel.windows]
+before-all = "choco install -y cmake"