[3.8] bpo-41100: Support macOS 11 and Apple Silicon #25274
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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 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
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Apr 8, 2021
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| elif archs == ('arm64', 'x86_64'): | ||
| machine = 'universal2' |
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@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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We have less than a week to merge this before 3.8 goes into security fixes only mode. |
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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. |
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Thanks for getting this over the finish line, @ned-deily! |
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This is a partial backport of bpo-41100 changes
e8b1c038b14b5fc8120aab62c9bf5fb840274cb6and96d906b144e6e6aa96c5ffebecbcc5d38034bbdafor Python 3.8. We introduce the ability to build Python from source forarm64on 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
7e729978fa08a360cbf936dc215ba7dd25a06a08to fix build errors with externallibffi.https://bugs.python.org/issue41100