libbind vs. libc & libresolv problems

Adam Tkac atkac at
Wed Apr 23 08:43:20 UTC 2008

On Mon, Apr 21, 2008 at 11:36:40AM -0500, Callum Lerwick wrote:
> On Mon, 2008-04-21 at 12:25 +0200, Adam Tkac wrote:
> > with this problem
> > became serious. We have two DNS resolver related libraries - libbind
> > from ISC on the one side and on the other side libc + libresolv from
> > GNU libc. Both libraries contains same symbols, does same work but
> > GNU libc implementation hides some symbols whose are sometimes needed
> > and this is reason why people linking against libbind (GNU libc is
> > stripped libbind source). Bug written above is one example that this
> > situation has to be solved.
> slviewer solved this by using c-ares instead.

Yes, there are many resolver libraries but interface used in libbind
and libresolv is well known and vast majority of programs uses it.
Also using of c-ares (for example) doesn't solve problem that glibc
symbols conflict with libbind symbols.


Adam Tkac, Red Hat, Inc.

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