[New-bugs-announce] [issue40861] On Windows, liblzma is always built without optimization

[Nikita Nemkin]

New submission from Nikita Nemkin <nikita at nemkin.ru>:

Windows build system always builds liblzma with optimizations disabled (/Od), even in Release configuration.

Compared to optimized build (/O2), compression speed is 2-2.5x slower and module size is 30% larger.

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components: Build
messages: 370702
nosy: nnemkin
priority: normal
severity: normal
status: open
title: On Windows, liblzma is always built without optimization
type: performance
versions: Python 3.10, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40861>
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