Re: F40 Change Proposal: Optimized Binaries for the AMD64 Architecture (System-Wide)

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* Vít Ondruch:

> 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.

The path layout was chosen so that ldconfig can auto-detect the
directories and process their contents, without having to know which
subdirectories are recognized by the dynamic loader (and in fact,
arbitrary directories can be added using ld.so --glibc-hwcaps-prepend).

Thanks,
Florian
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