While we're talking about RPM dependencies ...

[drago01]

On Thu, Apr 5, 2012 at 8:03 PM, Richard W.M. Jones <rjones at redhat.com> wrote:
> Today when using F17 Alpha, I ran qemu and got an error which was
> something like:
>
>  qemu-kvm: undefined symbol usbredirhost_foo
>
> (I don't recall the precise symbol).  This was just because that
> version of qemu was compiled against a later version of
> libusbredirhost.so (but one with the same soname), and updating
> libusbredirhost.so fixed the problem.
>
> The 'qemu' package has a bug, of sorts: the maintainer should have
> added a specific Requires line:
>
>  Requires: usbredir >= <some version>
>
> However, instead of pushing this problem on packagers, maybe RPM
> should resolve this by encoding the (admittedly long) list of symbols
> used by a binary?

Well the bug here is that usbredir changed ABI without bumping the soname.