On Thu, Apr 05, 2012 at 08:21:15PM +0200, drago01 wrote:
On Thu, Apr 5, 2012 at 8:03 PM, Richard W.M. Jones
<rjones(a)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.
AIUI you don't need to bump the soname when you add a new function,
only if you incompatibly change an existing function or struct.
(Larger questions about the meaning of "ABI" omitted from this message ...)
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
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