Build macOS version with thin lto option

[corona10]

BPO	44726
Nosy	@ronaldoussoren, @ned-deily, @corona10
PRs	bpo-44726: Update macOS build-installer script to use thin-lto option #27307

^{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/ned-deily'
closed_at = None
created_at = <Date 2021-07-23.14:39:15.401>
labels = ['OS-mac', 'type-feature', 'build', '3.11']
title = 'Build macOS version with thin lto option'
updated_at = <Date 2021-07-23.15:23:29.470>
user = 'https://github.com/corona10'

bugs.python.org fields:

activity = <Date 2021-07-23.15:23:29.470>
actor = 'corona10'
assignee = 'ned.deily'
closed = False
closed_date = None
closer = None
components = ['Build', 'macOS']
creation = <Date 2021-07-23.14:39:15.401>
creator = 'corona10'
dependencies = []
files = []
hgrepos = []
issue_num = 44726
keywords = ['patch']
message_count = 5.0
messages = ['398058', '398060', '398062', '398064', '398066']
nosy_count = 3.0
nosy_names = ['ronaldoussoren', 'ned.deily', 'corona10']
pr_nums = ['27307']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue44726'
versions = ['Python 3.11']

[corona10]

Since the thin-lto option is available for macOS distribution.
We can consider using the thin-lto option for the next macOS Python distribution?

[corona10]

see bpo-44340

[corona10]

However, to use thin-lto, build-installer.py should use clang compiler.
We need to check this issue.

[ned-deily]

Thanks for the suggestion. I will do some testing and, if warranted, make the necessary changes.

[corona10]

Thanks for the suggestion. I will do some testing and, if warranted, make the necessary changes.

Thanks Ned!

[corona10]

This PR solved the issue: #96766