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[3.9] bpo-41100: Support macOS 11 and Apple Silicon (GH-22855) (GH-23295)

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* [3.9] bpo-41100: Support macOS 11 and Apple Silicon (GH-22855)

Co-authored-by:  Lawrence D’Anna <lawrence_danna@apple.com>

* Add support for macOS 11 and Apple Silicon (aka arm64)

  As a side effect of this work use the system copy of libffi on macOS, and remove the vendored copy

* Support building on recent versions of macOS while deploying to older versions

  This allows building installers on macOS 11 while still supporting macOS 10.9..
(cherry picked from commit 41761933c1)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>

* Back port of changes to _decimal to support arm64

* temp_dir is in test.support in 3.9
This commit is contained in:
Ronald Oussoren 2020-11-22 11:18:40 +01:00 • committed by GitHub
parent 0aab3522b2
commit e8b1c038b1
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28 changed files with 1659 additions and 413 deletions
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Lib/distutils/tests/test_build_ext.py
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@ -492,7 +492,7 @@ def _try_compile_deployment_target(self, operator, target):
# format the target value as defined in the Apple
# Availability Macros. We can't use the macro names since
# at least one value we test with will not exist yet.
if target[1] < 10:
if target[:2] < (10, 10):
# for 10.1 through 10.9.x -> "10n0"
target = '%02d%01d0' % target
else: