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[3.8] bpo-41100: Support macOS 11 and Apple Silicon by maxbelanger · Pull Request #25274 · python/cpython · GitHub
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[3.8] bpo-41100: Support macOS 11 and Apple Silicon#25274

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maxbelanger wants to merge 3 commits into
python:3.8from
maxbelanger:mac-arm64-py38
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[3.8] bpo-41100: Support macOS 11 and Apple Silicon#25274
maxbelanger wants to merge 3 commits into
python:3.8from
maxbelanger:mac-arm64-py38

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maxbelanger commented Apr 8, 2021 •
edited by bedevere-bot
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This is a partial backport of bpo-41100 changes e8b1c038b14b5fc8120aab62c9bf5fb840274cb6 and 96d906b144e6e6aa96c5ffebecbcc5d38034bbda for Python 3.8. We introduce the ability to build Python from source for arm64 on macOS, but we do not make a promise of support. This allows us to omit support for weak-linking of symbols from the macOS SDK based on the deployment target, which are larger changes much more difficult to merge.

This also includes a backport of subsequent bpo-42688 change 7e729978fa08a360cbf936dc215ba7dd25a06a08 to fix build errors with external libffi.

https://bugs.python.org/issue41100

bpo-41100: Support macOS 11 and Apple Silicon on Python 3.8 …
a51aeea
This is a partial backport of bpo-41100 changes `e8b1c038b14b5fc8120aab62c9bf5fb840274cb6` and `96d906b144e6e6aa96c5ffebecbcc5d38034bbda` for Python 3.8. We introduce the ability to build Python from source for `arm64` on macOS, but we do not make a promise of support. This allows us to omit support for Universal2 binaries as well as weak-linking of symbols from the macOS SDK based on the deployment target, which are larger changes much more difficult to merge. This also includes a backport of subsequent bpo-42688 change `7e729978fa08a360cbf936dc215ba7dd25a06a08` to fix build errors with external `libffi`.
maxbelanger requested review from a team and rhettinger as code owners April 8, 2021 07:25
maxbelanger commented Apr 8, 2021
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Comment thread Lib/_osx_support.py
Comment on lines +514 to +515
elif archs == ('arm64', 'x86_64'):
machine = 'universal2'
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maxbelanger Apr 8, 2021

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality Hide comment

@ronaldoussoren I'm uncertain whether I should leave in the changes to allow universal2? I don't believe Homebrew requires this, nor would we (Dropbox).

I also don't think universal2 would be very practical given I am not back porting the weak linking changes.

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ambv commented Apr 26, 2021

We have less than a week to merge this before 3.8 goes into security fixes only mode.

ned-deily self-assigned this Apr 28, 2021
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ned-deily commented May 2, 2021 •
edited by bedevere-bot
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Thanks, @maxbelanger! As noted in bpo-41100, the contents of this PR have been rolled up into #25806. When that PR is resolved, we can close this one.

ambv closed this May 2, 2021
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maxbelanger commented May 2, 2021

Thanks for getting this over the finish line, @ned-deily!

maxbelanger deleted the mac-arm64-py38 branch May 2, 2021 19:13
ronaldoussoren mentioned this pull request Apr 10, 2022
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