Add macOS support: build wheels and document source install#8
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The C++ extension is portable: its dependencies (abseil, pybind11, zstd, google-cloud-cpp and friends) are all fetched and built from source via CMake FetchContent, and the only system requirements are CURL (provided by the macOS SDK) and OpenSSL. Verified building and running on macOS arm64 against Homebrew's openssl@3. cibuildwheel: - Extend the `build` selector to also match `macosx_*`. - Move `repair-wheel-command` (auditwheel) under `[tool.cibuildwheel.linux]`; auditwheel is Linux-only, so macOS falls back to the default delocate. - Add a `[tool.cibuildwheel.macos]` section that installs openssl@3 and points `OPENSSL_ROOT_DIR` at its Homebrew prefix. README: - Split the install instructions into Linux and macOS subsections, covering the Homebrew OpenSSL setup and the `OPENSSL_ROOT_DIR` hint.
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This is an LLM-based attempt at adding macOS support, and it works! I would love to have macOS wheels on PyPI at some point, although this PR doesn't cover that.
The C++ extension is portable: its dependencies (abseil, pybind11, zstd, google-cloud-cpp and friends) are all fetched and built from source via CMake FetchContent, and the only system requirements are CURL (provided by the macOS SDK) and OpenSSL. Verified building and running on macOS arm64 against Homebrew's openssl@3.
cibuildwheel:
buildselector to also matchmacosx_*.repair-wheel-command(auditwheel) under[tool.cibuildwheel.linux]; auditwheel is Linux-only, so macOS falls back to the default delocate.[tool.cibuildwheel.macos]section that installs openssl@3 and pointsOPENSSL_ROOT_DIRat its Homebrew prefix.README:
OPENSSL_ROOT_DIRhint.