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Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities

From Paul Gevers <elbrus@debian.org>
Newsgroups linux.debian.bugs.rc
Subject Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities
Date 2025-04-06 16:10 +0200
Message-ID <KyyRb-byxv-9@gated-at.bofh.it> (permalink)
References <K2g6e-6p3k-3@gated-at.bofh.it> <KakZ3-cTEl-3@gated-at.bofh.it> <KakZ3-cTEl-1@gated-at.bofh.it> <JwtEt-WHE-5@gated-at.bofh.it> <KakZ3-cTEl-1@gated-at.bofh.it>
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Hi h01ger,

On 29-01-2025 19:19, Holger Levsen wrote:
> On Thu, Jan 09, 2025 at 10:38:54AM +0100, Paul Gevers wrote:
>> I did that for both the armel and armhf architectures (see the
>> arm32-defaults.diff patch), but this is unchecked for any other release
>> architectures, and obviously wrong for some architectures.
>>
>> Please could you run (at least on amd64)
>> /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 --help
>> and look for the last lines like
>>
>> Subdirectories of glibc-hwcaps directories, in priority order:
>>    x86-64-v4 (supported, searched)
>>    x86-64-v3 (supported, searched)
>>    x86-64-v2 (supported, searched)
>>
>> on the machines where you saw that?
> 
> shall I (still) run this on all our amd64 build nodes (which are 4) and just
> attach the results to this bug report?


I assume it is still valid to do this. At least without information this 
bug might remain RC and I understand is hardly actionable. I guess you 
only need to inspect the two nodes that were used for one of the failing 
llvm-toolchain-18|19 runs e.g. ionos1-amd64 vs ionos15-amd64

Paul

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Thread

Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities Holger Levsen <holger@layer-acht.org> - 2025-01-29 19:30 +0100
  Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities Paul Gevers <elbrus@debian.org> - 2025-04-06 16:10 +0200
    Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities Holger Levsen <holger@layer-acht.org> - 2025-04-07 16:50 +0200
      Bug#1084955: Bug#1084954: Fwd: llvm-toolchain-*: assembly code seems to depend on build cpu capabilities Chris Hofstaedtler <zeha@debian.org> - 2025-04-13 12:00 +0200

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