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Differential D53693

depend-cleanup.sh: Remove everything before the last build epoch.
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Authored by imp on Nov 11 2025, 6:51 PM.
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emaste
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rG07e6bfeae5a1: depend-cleanup.sh: Remove everything before the last build epoch.
Summary

We were deleting the .a files for llvm when it was build in bootstrap,
but this caused us to rebuild all the bootstrap things since the
bootstrap compiler changed, making the build time 25 minutes instead of
77 seconds on one of my systems. Items before the last rebuild from
scratch epoch are no longer relevant because you have to rebuild
entirely, so the incremental conditions that lead up to them being
needed are no longer true.

Sponsored by: Netflix

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rG FreeBSD src repository
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Event Timeline

imp created this revision.Nov 11 2025, 6:51 PM
Herald added a subscriber: jrtc27. · View Herald TranscriptNov 11 2025, 6:51 PM
imp requested review of this revision.Nov 11 2025, 6:51 PM
Harbormaster completed remote builds in B68551: Diff 166257.Nov 11 2025, 6:51 PM
jrtc27 accepted this revision.Nov 11 2025, 6:59 PM
jrtc27 added inline comments.
tools/build/depend-cleanup.sh
472

Technically this can go too because the build epoch didn't land until the 14th (probably the stamp should have been updated to correspond to the commit date); see git diff 0090096e52738383d6bf48ed5d27dffc850c8a01 <remote>/main tools/build/depend-cleanup.sh.

This revision is now accepted and ready to land.Nov 11 2025, 6:59 PM
emaste accepted this revision.Nov 11 2025, 7:35 PM
emaste added a subscriber: emaste.
emaste added inline comments.
tools/build/depend-cleanup.sh
268–274

This perhaps should be a new example in the comment at the top of this file

Closed by commit rG07e6bfeae5a1: depend-cleanup.sh: Remove everything before the last build epoch. (authored by imp). · Explain WhySun, Nov 16, 4:11 AM
This revision was automatically updated to reflect the committed changes.
imp added a commit: rG07e6bfeae5a1: depend-cleanup.sh: Remove everything before the last build epoch..
imp added inline comments.Sun, Nov 16, 4:25 AM
tools/build/depend-cleanup.sh
268–274

Ok. I'll do it

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tools/
build/
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tools/build/depend-cleanup.sh

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