Add cibuildwheel configuration

To allow us to automatically build wheels for the project, add
`cibuildwheel` configuration files that run automatically with GitHub
actions.

.github/workflows/build_wheels.yml

@@ -0,0 +1,48 @@
+name: Build and upload to PyPI
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  build_wheels:
+    name: Build wheels on Linux
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.4.0
+
+      - uses: actions/upload-artifact@v2
+        with:
+          path: ./wheelhouse/*.whl
+
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build sdist
+        run: pipx run build --sdist
+
+      - uses: actions/upload-artifact@v2
+        with:
+          path: dist/*.tar.gz
+
+  upload_pypi:
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: artifact
+          path: dist
+
+      - uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}

pyproject.toml

@@ -45,3 +45,15 @@ ignore = [
 
 [tool.mypy]
 exclude="tests/integration/(native_extension|multithreaded_extension)/"
+
+[tool.cibuildwheel]
+build = ["cp37-*", "cp38-*", "cp39-*", "cp310-*"]
+skip = "*musllinux*"
+
+[tool.cibuildwheel.linux]
+before-all = "yum install -y libunwind-devel"
+manylinux-x86_64-image = "manylinux2010"
+manylinux-i686-image = "manylinux2010"
+manylinux-aarch64-image = "manylinux2010"
+manylinux-ppc64le-image = "manylinux2010"
+manylinux-s390x-image = "manylinux2010"

setup.py

@@ -196,7 +196,7 @@ def build_js_files(self):
     library_dirs=[str(LIBBACKTRACE_LIBDIR)],
     include_dirs=["src", str(LIBBACKTRACE_INCLUDEDIRS)],
     language="c++",
-    extra_compile_args=["-std=c++17", "-Wall", "-Werror", *EXTRA_COMPILE_ARGS],
+    extra_compile_args=["-std=c++17", "-Wall", *EXTRA_COMPILE_ARGS],
     extra_link_args=["-std=c++17", "-l:libbacktrace.a"],
     define_macros=DEFINE_MACROS,
 )