On Tue, 2 Jan 2024 at 10:24, Vít Ondruch <vondr...@redhat.com> wrote:
>
> Dne 02. 01. 24 v 13:42 Stephen Smoogen napsal(a):
>
>
>
> On Tue, 2 Jan 2024 at 06:21, Vít Ondruch <vondr...@redhat.com> wrote:
>
>>
>> Dne 28. 12. 23 v 17:12 Aoife Moloney napsal(a):
>>
>> The dynamic linker already has the `glibc-hwcaps` mechanism to load
>> optimized implementations of ''shared objects'' [3]. This means that
>> packages can provide optimized libraries and they linker will be
>> automatically load them from separate directories if appropriate.
>> (For AMD64, this is `/usr/lib64/glibc-hwcaps/x86-64-v{2,3,4}/`.)
>>
>>
>>
>> Is this something specific to x86_64 that the libs needs to be nested in
>> a place such as `/usr/lib64/glibc-hwcaps/x86-64-v{2,3,4}/`? Why not use
>> e.g. `/usr/x86-64-v{2,3,4}/lib` directories instead? Or something more
>> universal.
>>
>>
> Adding directories to the /usr sub-space generally gets bogged down into
> 'You are polluting my name-space' arguments which get no-where because some
> of the people getting angry is having to live with some 3rd party rules and
> regulations which stipulated how things look and will only get updated once
> a decade or so. [The same goes with subdirectories in /usr/bin etc where it
> causes similar problems.] There tends to be no 'general' case which works
> unless it gets 'agreed' upon by some outside of the distro body that
> publishes 'versioned' standards.
>
>
> Checking what Debian does, they have paths such as
> `/usr/lib/x86_64-linux-gnu/`. So we would not be alone.
>
Do they have /usr/bin/{arch} directories also? I thought they did the
/usr/lib/{arch-os-type}/ for libraries to deal with multiarch (aka x86_32,
x86_64, etc) libs . the main item will be if we are following
https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch04s04.html or if there
is enough variation in
https://www.freedesktop.org/software/systemd/man/latest/file-hierarchy.html
to allow subdirectories in /usr/bin.
It would seem that in the freedesktop version /usr/lib/{arch-id} is
acceptable and I think in the FHS-3.0, then /usr/lib{qualifier} is ok.
--
Stephen Smoogen, Red Hat Automotive
Let us be kind to one another, for most of us are fighting a hard battle.
-- Ian MacClaren
--
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