Support macOS 11 and Apple Silicon Macs

@ronaldoussoren

BPO	41100
Nosy	@ronaldoussoren, @vstinner, @ned-deily, @skrah, @jmroot, @ambv, @jreese, @dirn, @mattip, @indygreg, @maxbelanger, @eamanu, @corona10, @isuruf, @miss-islington, @mistydemeo, @erlend-aasland, @nieder, @lawrence-danna-apple, @benoithudson, @harlantc
PRs	bpo-41100: Support macOS 11 when building #21113 [3.9] bpo-41100: Support macOS 11 when building (GH-21113) #21153 [3.8] bpo-41100: Support macOS 11 when building (GH-21113) #21154 [3.7] bpo-41100: Support macOS 11 when building (GH-21113) #21155 bpo-41100: clarify NEWS item about macOS 11 support #21174 [3.9] bpo-41100: clarify NEWS item about macOS 11 support (GH-21174) #21175 [3.8] bpo-41100: clarify NEWS item about macOS 11 support (GH-21174) #21176 bpo-41100: allow python to build for macosx-11.0-arm64 #21224 bpo-41100: fix _decimal for arm64 Mac OS #21228 bpo-41100: use system libffi for Mac OS 10.15 and up #21239 bpo-41100: ctypes: check _dyld_shared_cache_contains_path in find_library #21241 bpo-41100: ctypes: use the correct ABI for variadic functions #21242 bpo-41100: ctypes fixes for arm64 Mac OS #21249 bpo-41100: test fixes for Mac OS 11 #21266 bpo-41100: pythonw: add arm64 support #21268 BPO-41100: macOS branch #21564 bpo-41100: add runtime checks for MACOSX_DEPLOYMENT_TARGET=10.10 #21576 bpo-41100: add runtime checks for MACOSX_DEPLOYMENT_TARGET=10.10 #21577 bpo-41100: deploy to an earlier version of macOS #21583 bpo-41100: bugfix, arm64 Mac OS, missing #include <AvailabilityMacros.h> #21588 bpo-41100: Support macOS 11 and Apple Silicon #22855 bpo-41101: Support "arm64" in Mac/Tools/pythonw #21114 bpo-41090: Add support for building "Universal 2" binaries on macOS 11. #21115 bpo-41100: add support for "universal2" ie arm64,x86_64 universal build #21246 bpo-41100: Support macOS 11 and Apple Silicon (GH-22855) #23239 bpo-41100: Stripping '-arch arm64' didn't work after all #23280 [3.9] bpo-41100: Support macOS 11 and Apple Silicon (GH-22855) #23295 bpo-42361: Use Tcl/Tk 8.6.10 when building the installer on recent macOS #23293 [3.9] bpo-41100: Update Whatsnew and installer ReadME for 3.9.1 #23472 bpo-41100: minor build installer fixes #23480 [3.9] bpo-41100: minor build installer fixes (GH-23480) #23484 bpo-41100: in test_platform, ignore 10.16 #23485 [3.9] bpo-41100: in test_platform, ignore 10.16 (GH-23485) #23486 [3.6] bpo-41100: Support macOS 11 when building (GH-21113) #21155 #25014 [3.8] bpo-41100: Support macOS 11 and Apple Silicon #25274 [3.8] bpo-41100: Support macOS 11 Big Sur and Apple Silicon Macs #25806 bpo-41100: Update Misc/ACKS #25808 [3.9] bpo-41100: Update Misc/ACKS (GH-25808) #25809 [3.8] bpo-41100: Support building with new macOS SDK (GH-22855) #26474
Files	build.log: build log for ARM M1 Big Sur

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ronaldoussoren'
closed_at = <Date 2021-05-02.21:13:19.655>
created_at = <Date 2020-06-24.11:51:07.053>
labels = ['OS-mac', 'build', '3.8', '3.9', '3.10']
title = 'Support macOS 11 and Apple Silicon Macs'
updated_at = <Date 2021-05-31.18:07:58.057>
user = 'https://github.com/ronaldoussoren'

bugs.python.org fields:

activity = <Date 2021-05-31.18:07:58.057>
actor = 'isuruf'
assignee = 'ronaldoussoren'
closed = True
closed_date = <Date 2021-05-02.21:13:19.655>
closer = 'ned.deily'
components = ['Build', 'macOS']
creation = <Date 2020-06-24.11:51:07.053>
creator = 'ronaldoussoren'
dependencies = []
files = ['49962']
hgrepos = []
issue_num = 41100
keywords = ['patch']
message_count = 43.0
messages = ['372245', '372371', '372374', '372375', '372376', '372456', '372457', '372458', '372652', '372672', '372680', '372716', '374315', '375532', '375572', '379230', '380538', '381091', '381097', '381585', '381608', '381640', '381701', '381702', '381708', '381709', '382932', '382939', '386664', '386740', '387526', '390505', '390561', '390562', '391138', '391141', '391142', '391146', '392675', '392680', '392682', '392683', '392734']
nosy_count = 24.0
nosy_names = ['ronaldoussoren', 'vstinner', 'ned.deily', 'skrah', 'jmr', 'lukasz.langa', 'jreese', 'python-dev', 'dirn', 'mattip', 'indygreg', 'Maxime Belanger', 'maxbelanger', 'eamanu', 'corona10', 'isuruf', 'miss-islington', 'mistydemeo', 'erlendaasland', 'nieder', 'lawrence-danna-apple', 'Mika_Hawkins', 'benoithudson', 'harlantc']
pr_nums = ['21113', '21153', '21154', '21155', '21174', '21175', '21176', '21224', '21228', '21239', '21241', '21242', '21249', '21266', '21268', '21564', '21576', '21577', '21583', '21588', '22855', '21114', '21115', '21246', '23239', '23280', '23295', '23293', '23472', '23480', '23484', '23485', '23486', '25014', '25274', '25806', '25808', '25809', '26474']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue41100'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

macOS 11 is darwin 20.0.0. This confuses the configure script, resulting in defining _POSIX_C_SOURCE and friends.

New changeset 8ea6353 by Ronald Oussoren in branch 'master':
BPO-41100: Support macOS 11 when building (GH-21113)
8ea6353

New changeset ad7a667 by Miss Islington (bot) in branch '3.9':
BPO-41100: Support macOS 11 when building (GH-21113)
ad7a667

@ned.deily sorry about that, will do that in the future. Thanks for replying.

in regard to the extra args, those were all added in an attempt to make things work, I should probably have shown an earlier log that excluded them. I wasn't sure setup.py would be the right place to look for more, I'll take a look there.

Thanks

No problem. Also you should not need to specify sysroot if you are; the Apple compiler front-end takes care of that for you (see man xcrun for more details).

Thanks, Max, for doing the backport to 3.8 hard work! While PR 25274 covered most of the changes needed, there were some additional fixes and changes needed and I felt it was easier to cherry-pick all of the changes into a new PR. I have done extensive building and testing on Big Sur on both Apple Silicon and Intel Macs and regression building and testing on some older macOS versions including macOS 10.9 and python.org macOS installers. So far, it looks good to me. Assuming the 3.8 release manager has no objections, I will merge this in time for 3.8.10 and we can finally close this issue.

New changeset b29d0a5 by Ned Deily in branch '3.8':
[3.8] bpo-41100: Support macOS 11 Big Sur and Apple Silicon Macs (bpo-25806)
b29d0a5

New changeset 518f8b5 by Ned Deily in branch 'master':
bpo-41100: Update Misc/ACKS (GH-25808)
518f8b5

New changeset bb3ec9c by Miss Islington (bot) in branch '3.9':
bpo-41100: Update Misc/ACKS (GH-25808) (GH-25809)
bb3ec9c

Thank you to everyone who contributed to this major undertaking! A particular thank you to Lawrence for doing much of the initial work and paving the way. Now that 3.8 also supports Big Sur and Apple Silicon Macs as of the imminent 3.8.10 release, it's time to close this issue. If new concerns arise, pleasa open or use other issues.

On Python < v3.8 see

python3.7-arm64 is not available actions/setup-python#856 (comment)

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Support macOS 11 and Apple Silicon Macs #85272

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Support macOS 11 and Apple Silicon Macs #85272

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ronaldoussoren commented on Jun 24, 2020

ned-deily commented on Jun 25, 2020

miss-islington commented on Jun 25, 2020

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