bpo-41100: ctypes fixes for arm64 Mac OS by lawrence-danna-apple · Pull Request #21249 · python/cpython
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This updates setup.py to default to the system libffi on Mac OS 10.15 and forward. It also updates detect_ctypes to prefer finding libffi in the Xcode SDK, rather than /usr/include
On arm64 the calling convention for variardic functions is different than the convention for fixed-arg functions of the same arg types. ctypes needs to use ffi_prep_cif_var to tell libffi which calling convention to use.
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SMillerDev pushed a commit to Homebrew/homebrew-core that referenced this pull request
This set of patches includes the following upstream pull requests: - python/cpython#21114 "Support `arm64` in Mac/Tools/pythonw" - python/cpython#21224 "allow python to build for macosx-11.0-arm64" - python/cpython#21249 "ctypes fixes for arm64 Mac OS" Adding the patches before upstream has released them is warranted here because `python@3.8` is widely used as a dependency, and the patch is needed to enable testing dependent formulae on arm64. CC: Sean Molenaar <1484494+SMillerDev@users.noreply.github.com>
Co-authored-by: Arch Oversight <archoversight@gmail.com>
claui added a commit to Homebrew/formula-patches that referenced this pull request
This set of patches includes the following upstream pull requests, in this order: - PR 20171, "Fix _tkinter use" python/cpython#20171 (prerequisite for patch #21249 to apply) - PR 21114, "Support `arm64` in Mac/Tools/pythonw" python/cpython#21114 - PR 21224, "allow python to build for macosx-11.0-arm64" python/cpython#21224 - PR 21249, "ctypes fixes for arm64 Mac OS" python/cpython#21249 The patches for 20171 and 21249 have been minimally modified in order to backport them to 3.8.3. Note that these have been successfully tested for `python@3.8` but not for `python@3.7`. The patch directive should be surrounded by an `if Hardware::CPU.arm?` block.
BrewTestBot pushed a commit to Homebrew/homebrew-core that referenced this pull request
ronaldoussoren added a commit to ronaldoussoren/cpython that referenced this pull request
This is support for ctypes on macOS/arm64 based on PR 21249 by Lawrence D'Anna (Apple). Changes: - changed __builtin_available tests from 11.0 to 10.15 - added test to setup.py for ffi_closure_alloc and use that in malloc_closure.c - Minor change in the code path for ffi_prep_closure_var (coding style change)
