[issue45373] ./configure --enable-optimizations should enable LTO

[Ned Deily]

Ned Deily <nad at python.org> added the comment:

> IIRC activating lto is specially annoying on MacOS due to the need of some llvm components that are a bit hard to get

Can you say more? We are currently using --with-lto with a vanilla Apple Command Line Tools (or Xcode) for macOS installer builds when building on macOS 10.15 High Sierra or higher.  Perhaps this was just an issue on older versions.

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nosy: +ned.deily

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<https://bugs.python.org/issue45373>
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