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lix/doc/manual/rl-next-dev/build-timing-analysis.md
jade 663d20e6d5 Enable clang build timing analysis 
I didn't enable this by default for clang due to making the build time
10% worse or so. Unfortunate, but tbh devs for whom 10% of build time is
not *that* bad should probably simply enable this.

Change-Id: I8d1e5b6f3f76c649a4e2f115f534f7f97cee46e6
2024-03-27 03:52:57 +00:00

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synopsis cls
Clang build timing analysis 587

We now have Clang build profiling available, which generates Chrome tracing files for each compilation unit. To enable it, run meson configure build -Dprofile-build=enabled then rerun the compilation.

If you want to make the build go faster, do a clang build with meson, then run maintainers/buildtime_report.sh build, then contemplate how to improve the build time.

You can also look at individual object files' traces in https://ui.perfetto.dev.