From: Joshua D. Drake <jd@commandprompt.com>
To: Craig James <craig_james@emolecules.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: 8.3 to 8.4 - Can't load dynamic shared library
Date: Thu, 15 Jul 2010 11:58:00 -0700
Message-ID: <1279220280.30528.56.camel@jd-desktop.unknown.charter.com> (raw)
In-Reply-To: <4C3F583C.50208@emolecules.com>
References: <4C3F583C.50208@emolecules.com>
On Thu, 2010-07-15 at 11:49 -0700, Craig James wrote:
> I'm migrating from Postgres 8.3.10 to 8.4.4, and also from Fedora 9 to Ubuntu 10.04.
>
> On 8.3.10, I have a C extension that worked on 8.3, but now refuses to load on 8.4:
>
> CREATE OR REPLACE FUNCTION chmoogle_session_id() RETURNS integer
> AS '/usr/local/pgsql/lib/libchmoogle.so', 'chmoogle_session_id'
> LANGUAGE 'C' VOLATILE;
> ERROR: could not load library "/usr/local/pgsql/lib/libchmoogle.so": /usr/local/pgsql/lib/libchmoogle.so: undefined symbol: _ZN9OpenBabel4etabE
>
> So it finds the first shared library, libchmoogle.so. But the symbol _ZN9OpenBabel4etabE is from a second library, the OpenBabel (chemistry) shared library, which is also located in
>
> /usr/local/pgsql/lib/libopenbabel.so
>
> On the Postgres 8.3 system, I simply put libopenbabel.so into the /usr/local/pgsql/lib directory, and everything worked well. On 8.4, I can't seem to get it to load libopenbabel.so. Other programs that use this library have no trouble finding it.
>
> What (if anything) has changed from 8.3 to 8.4 regarding how it finds and links dynamic libraries? What else should I look for? I'm stumped on this one.
>
Studid question, but did you recompile the library against 8.4 first?
> Thanks,
> Craig
>
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To: pgsql-admin@postgresql.org
Cc: jd@commandprompt.com, craig_james@emolecules.com
Subject: Re: 8.3 to 8.4 - Can't load dynamic shared library
In-Reply-To: <1279220280.30528.56.camel@jd-desktop.unknown.charter.com>
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