Can't run newly-compiled RELENG_6 programs under RELENG_6_1:
missing __res_state
Guy Helmer
ghelmer at palisadesys.com
Wed Jul 19 20:51:41 UTC 2006
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.
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