On Sunday, January 12, 2025, Vitaly Zaitsev via devel <devel@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
On 10/01/2025 20:28, Aoife Moloney via devel-announce wrote:
Individual packages can provide already optimized libraries via the
glibc-hwcaps mechanism. This approach will be extended to executables.
The package provides an optimized variant of a binary in a different
directory.
So all Fedora packages will take 2x (x86_64-v1, x86_64-v2) disk space? Am I right?
No, the proposal is not to do that for all packages, it's opt in for the ones that benefit.
A symlink to small program which replaces the binary in
`/usr/bin`.
What will happen if the system was installed on x86_64-v2 and then copy-pasted to another machine with x86_64-v1? The symbolic link will point to x86_64-v2 binary, which will cause a segmentation fault, resulting in the system not being able to boot.
How realistic is that case? If anything it goes in the other direction i.e people upgrade their hardware.
--
Sincerely,
Vitaly Zaitsev (vitaly@xxxxxxxxxxxxxx)
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