Support "arm64" in Mac/Tools/pythonw

[ronaldoussoren]

BPO	41101
Nosy	@ronaldoussoren, @ned-deily
PRs	bpo-41101: Support "arm64" in Mac/Tools/pythonw #21114
Superseder	bpo-41100: Support macOS 11 and Apple Silicon Macs

^{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 = None
closed_at = <Date 2020-10-23.19:50:48.364>
created_at = <Date 2020-06-24.12:16:28.451>
labels = ['OS-mac', 'build', '3.8', '3.9', '3.10', 'type-feature']
title = 'Support "arm64" in Mac/Tools/pythonw'
updated_at = <Date 2020-10-23.19:50:48.363>
user = 'https://github.com/ronaldoussoren'

bugs.python.org fields:

activity = <Date 2020-10-23.19:50:48.363>
actor = 'ronaldoussoren'
assignee = 'none'
closed = True
closed_date = <Date 2020-10-23.19:50:48.364>
closer = 'ronaldoussoren'
components = ['Build', 'macOS']
creation = <Date 2020-06-24.12:16:28.451>
creator = 'ronaldoussoren'
dependencies = []
files = []
hgrepos = []
issue_num = 41101
keywords = ['patch']
message_count = 2.0
messages = ['372246', '379471']
nosy_count = 2.0
nosy_names = ['ronaldoussoren', 'ned.deily']
pr_nums = ['21114']
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = '41100'
type = 'enhancement'
url = 'https://bugs.python.org/issue41101'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

[ronaldoussoren]

Apple introduced a new CPU architecture for macOS at WWDC, which is arm64.

Mac/Tools/pythonw.c launches the real python interpreter in a framework build is and is careful to launch that using the same architecture as it is running (to make it possible to use "arch -x86_64 pythonw" to launch the x86_64 variant when available.

The current code does not support ARM64.

[ronaldoussoren]

This change is part of the active PR in bpo-41100. Therefore closing this issue.