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Date: Wed, 19 Jul 2006 15:51:35 -0500
From: Guy Helmer <ghelmer@palisadesys.com>
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To: Scott Long <scottl@samsco.org>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Can't run newly-compiled RELENG_6 programs under RELENG_6_1:
 missing __res_state
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Scott Long wrote:
> Guy Helmer wrote:
>> We just tried running programs under RELENG_6_1 that were compiled 
>> under RELENG_6 checked out 2006-07-19, and couldn't because of the 
>> undefined symbol "__res_state"l, which I would assume is a result of 
>> the recent MFC of the BIND 9 resolver library.    Is this to be 
>> expected?  It will cause a bit of a hassle...
>>
>> Guy
>>
>
> No, it shouldn't be that way.  I heavily advocated that the STABLE 
> branches should be free from exactly these kinds of problems.  Hopefully
> this gets resolved.
>
> Scott
After looking more deeply, I've found it is because our own software 
plays with the semi-public _res structure to reduce the timeout and 
retries in the DNS resolver routines.  I found the changes in 
/usr/include/resolv.h - references to _res.xxx are being changed via 
macros into function calls to make the operations thread-aware.  Now 
that I know, I can work around it..

Guy

-- 
Guy Helmer, Ph.D.
Principal System Architect
Palisade Systems, Inc.