jade
24057dcb6a
We realized that there's really no good place to put these dev facing
bulletins, and the user-facing release notes aren't really the worst
place to put them, I guess, and we do kind of hope that it converts
users to devs.
Change-Id: Id9387b2964fe291cb5a3f74ad6344157f19b540c
23 lines
762 B
Markdown
23 lines
762 B
Markdown
---
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synopsis: Clang build timing analysis
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cls: 587
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category: Development
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---
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We now have Clang build profiling available, which generates Chrome
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tracing files for each compilation unit. To enable it, run `meson configure
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build -Dprofile-build=enabled` in a Clang stdenv (`nix develop
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.#native-clangStdenvPackages`) then rerun the compilation.
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If you want to make the build go faster, do a clang build with meson, then run
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`maintainers/buildtime_report.sh build`, then contemplate how to improve the
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build time.
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You can also look at individual object files' traces in
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<https://ui.perfetto.dev>.
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See [the wiki page][improving-build-times-wiki] for more details on how to do
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this.
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[improving-build-times-wiki]: https://wiki.lix.systems/link/8#bkmrk-page-title
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