Fix dependency typo and unpin cibuildwheel version in wheel building … (#1263)

* Fix dependency typo and unpin cibuildwheel version in wheel building action

* Move to monolithic build jobs, restrict to x64 architectures

As of this commit, all wheel building jobs complete on GitHub Actions. Since some platform-specific options had to be set to fix different types of build problems underway, the build job matrix was unrolled.

Still left TODO:
* Wheel testing after build (running the Python bindings test)
* Emulating bazel on other architectures to build aarch64/i686/ppc64le
* Enabling Win32 (this fails due to linker errors).

* Add binding test commands for all wheels, set macOSX deployment target to 10.9

* Add instructions for updating Python __version__ variable before release creation

.github/workflows/wheels.yml

@@ -2,6 +2,9 @@ name: Build and upload Python wheels
 
 on:
   workflow_dispatch:
+  release:
+    types:
+      - published
 
 jobs:
   build_sdist:
@@ -19,21 +22,15 @@ jobs:
       - name: Build and check sdist
         run: |
           python setup.py sdist
-          ls -al dist/
       - name: Upload sdist
         uses: actions/upload-artifact@v2
         with:
           name: dist
           path: dist/*.tar.gz
 
-  build_wheels:
-    name: Build google-benchmark wheels on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      # let runner finish even if there is a failure
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+  build_linux:
+    name: Build google-benchmark manylinux wheels
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out Google Benchmark
@@ -44,15 +41,93 @@ jobs:
         with:
           python-version: 3.9
 
-      - name: Build Python wheels on ${{ matrix.os }}
+      # TODO: Bazel does not seem to work in an emulated Docker environment, see
+      # https://github.com/bazelbuild/bazel/issues/11379
+#      - name: Set up QEMU
+#        uses: docker/setup-qemu-action@v1
+#        with:
+#          platforms: all
+
+      - name: Build Python wheels on ubuntu-latest
         env:
-          CIBW_BUILD: 'cp36-* cp37-* cp38-* cp39-*'
+          CIBW_BUILD: 'cp37-* cp38-* cp39-* cp310-*'
+          CIBW_SKIP: "*-musllinux_*"
+          # Bazel repo only exists on CentOS 7 for x86 and ppc, so no manylinux2010
+          # TODO: Build ppc64le, aarch64 using some other trick
+          CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
+          CIBW_ARCHS_LINUX: x86_64
+          CIBW_BEFORE_ALL: >
+            curl -O --retry-delay 5 --retry 5 https://copr.fedorainfracloud.org/coprs/vbatts/bazel/repo/epel-7/vbatts-bazel-epel-7.repo &&
+            cp vbatts-bazel-epel-7.repo /etc/yum.repos.d/bazel.repo &&
+            yum install -y bazel4
+          CIBW_TEST_COMMAND: python {project}/bindings/python/google_benchmark/example.py
         run: |
-          pip install cibuildwheelcibuildwheel==2.0.0a2
+          pip install cibuildwheel
+          python -m cibuildwheel --output-dir wheelhouse
+
+      - name: Upload Linux wheels
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: wheelhouse/*.whl
+
+  build_macos:
+    name: Build google-benchmark macOS wheels
+    runs-on: macos-latest
+
+    steps:
+      - name: Check out Google Benchmark
+        uses: actions/checkout@v2
+
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Build Python wheels on macOS
+        env:
+          CIBW_ARCHS_MACOS: "x86_64 arm64"
+          CIBW_BUILD: 'cp37-* cp38-* cp39-* cp310-*'
+          # ARM64 requires Python 3.8 minimum
+          CIBW_SKIP: 'cp37-*-arm64'
+          CIBW_TEST_COMMAND: python {project}/bindings/python/google_benchmark/example.py
+          CIBW_TEST_SKIP: "*_arm64"
+        run: |
+          pip install cibuildwheel
+          python -m cibuildwheel --output-dir wheelhouse
+
+      - name: Upload macOS wheels
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: wheelhouse/*.whl
+
+  build_windows:
+    name: Build google-benchmark wheels on Windows
+    runs-on: windows-latest
+
+    steps:
+      - name: Check out Google Benchmark
+        uses: actions/checkout@v2
+
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+
+      - name: Build Python wheels on Windows
+        env:
+          CIBW_BUILD: 'cp37-* cp38-* cp39-* cp310-*'
+          CIBW_ARCHS_WINDOWS: AMD64
+          # otherwise, pip crashes the job by trying to remove an in-use bazel DLL
+          PIP_NO_CLEAN: true
+          CIBW_TEST_COMMAND: python {project}/bindings/python/google_benchmark/example.py
+        run: |
+          pip install cibuildwheel
           python -m cibuildwheel --output-dir wheelhouse
 
       - name: Upload wheels
         uses: actions/upload-artifact@v2
         with:
           name: dist
-          path: ./wheelhouse/*.whl
+          path: wheelhouse/*.whl

docs/releasing.md

@@ -8,10 +8,23 @@
     * `git log $(git describe --abbrev=0 --tags)..HEAD` gives you the list of
       commits between the last annotated tag and HEAD
     * Pick the most interesting.
-* Create one last commit that updates the version saved in `CMakeLists.txt` to the release version you're creating. (This version will be used if benchmark is installed from the archive you'll be creating in the next step.)
+* Create one last commit that updates the version saved in `CMakeLists.txt` and the
+  `__version__` variable in `bindings/python/google_benchmark/__init__.py`to the release
+  version you're creating. (This version will be used if benchmark is installed from the
+  archive you'll be creating in the next step.)
 
 ```
-project (benchmark VERSION 1.5.3 LANGUAGES CXX)
+project (benchmark VERSION 1.6.0 LANGUAGES CXX)
+```
+
+```python
+# bindings/python/google_benchmark/__init__.py
+
+# ...
+
+__version__ = "1.6.0"  # <-- change this to the release version you are creating
+
+# ...
 ```
 
 * Create a release through github's interface

setup.py

@@ -1,5 +1,6 @@
 import os
 import posixpath
+import platform
 import re
 import shutil
 import sys
@@ -89,6 +90,8 @@ class BuildBazelExtension(build_ext.build_ext):
             # Link with python*.lib.
             for library_dir in self.library_dirs:
                 bazel_argv.append("--linkopt=/LIBPATH:" + library_dir)
+        elif sys.platform == "darwin" and platform.machine() == "x86_64":
+            bazel_argv.append("--macos_minimum_os=10.9")
 
         self.spawn(bazel_argv)