stand: Use SOURCE_DATE_EPOCH in newvers.sh
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Authored by cperciva on Mon, Feb 3, 4:12 AM.

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Reviewers

manu
imp
emaste

Commits

rG44a768e1a80d: stand: Use SOURCE_DATE_EPOCH in newvers.sh

Summary

The newvers.sh script is used to generate vers.c for 10 programs (at
latest count on amd64): 4 EFI loaders, 3 x86 loaders, two userboots,
and one kboot. When building without MK_REPRODUCIBLE_BUILD this
resulted in 10 different timestamps being compiled into various files.

If SOURCE_DATE_EPOCH is set, use that value rather than the current
date and time.

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Repository

rG FreeBSD src repository

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Event Timeline

cperciva created this revision.Mon, Feb 3, 4:12 AM

Herald added a reviewer: manu. · View Herald TranscriptMon, Feb 3, 4:12 AM

Herald added subscribers: dab, imp. · View Herald Transcript

cperciva requested review of this revision.Mon, Feb 3, 4:12 AM

Harbormaster completed remote builds in B62214: Diff 150386.Mon, Feb 3, 4:12 AM

cperciva added reviewers: imp, emaste.Mon, Feb 3, 4:13 AM

imp accepted this revision.Mon, Feb 3, 4:15 AM

This revision is now accepted and ready to land.Mon, Feb 3, 4:15 AM

Context which probably doesn't need to be in the commit message: I'd like to make builds on HEAD *reproducible* even if they're not *deterministic*, i.e. given a build I want to be able to extract environment settings which will allow the same build to be reproduced. This will be easier if I can SOURCE_DATE_EPOCH?= a single SOURCE_DATE_EPOCH value and have it apply to all of the loader binaries.