[Bug 1939413] Re: /usr/lib/aarch64-linux-gnu/libprotobuf.a’ generated with LTO version 9.2 instead of the expected 11.0

[Alexandre Erwin Ittner]

I was running a few test builds with different combinations of gcc,
elfutils and protobuf and trying to make the build fail... but it
continues working despite the older elfutils compiled with the newer
gcc.

Last check was with protobuf-3.12.4-1ubuntu3 (from jammy, 4 days ago) in
an impish 0.185-1build1 and then downgraded to a 0.183-8 built with
11.2.0-7ubuntu2 (from impish), but it still does not trigger the issue
despite the mismatches.

I still could not find the reason.

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Title:
  /usr/lib/aarch64-linux-gnu/libprotobuf.a’ generated with LTO version
  9.2 instead of the expected 11.0

Status in elfutils package in Ubuntu:
  New
Status in mozc package in Ubuntu:
  Invalid
Status in protobuf package in Ubuntu:
  Triaged

Bug description:
  When trying to build package mozc for arm64 the following error popped
  up:

  lto1: fatal error: bytecode stream in file ‘/usr/lib/aarch64-linux-
  gnu/libprotobuf.a’ generated with LTO version 9.2 instead of the
  expected 11.0

  Why does the library contain LTO information at all?

  Best regards

  Heinrich

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