The rebuild of protobuf no longer has lto information according to
objdump, but the reported version certainly does. The "bad" version was
built during hirsute devel, so I took a current hirsute system and
systematically downgraded build-deps to the versions in the log of the
"bad" build. Turns out, the relevant difference is a couple libs from
elfutils: libdw1 and libelf1. If I build protobuf w/ the 0.183-6
versions, I can reproduce the problem. 0.183-8 does not (0.183-7 FTBFS,
so could not be tested).
Strangely the delta between elfutils 0.183-6 and 0.183-8 appears
innocuous - it all looks like packaging cleanup, no changes to upstream
source.
** Also affects: elfutils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1939413
Title:
/usr/lib/aarch64-linux-gnu/libprotobuf.a’ generated with LTO version
9.2 instead of the expected 11.0
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