There is a FAQ entry for this:
http://linuxfinances.info/info/faq.html#AEN41935

Sebastian K?hner wrote:

>Hi!
>
>Thanks for your answer. I downloaded the source code of postgresql ... it's
>the same version like in the package.
>
>I made a ./configure, make, make install and make install-all-headers and I
>was able to configure and install slony.
>
>The problem that I have now is, that I can't run my setup_cluster.sh script
>anymore. There appears the following error:
>
>ERROR:  could not access file "$libdir/xxid": No such file or directory
><stdin>:4: PGRES_FATAL_ERROR load '$libdir/xxid';  - ERROR:  could not
>access file "$libdir/xxid": No such file or directory
><stdin>:4: Error: the extension for the xxid data type cannot be loaded in
>database 'dbname=contactdb host=localhost user=postgres'
><stdin>:4: ERROR: no admin conninfo for node 134583256
>
>Does anybody know what that means??
>
>Many thanks!
>
>Sebastian
>
>
>
>
>----- Original Message ----- 
>From: "Tim Goodaire" <tgoodair at ca.afilias.info>
>To: <slony1-general at gborg.postgresql.org>
>Sent: Wednesday, September 07, 2005 12:13 PM
>Subject: Re: [Slony1-general] Compile
>
>
>  
>
>>_______________________________________________
>>Slony1-general mailing list
>>Slony1-general at gborg.postgresql.org
>>http://gborg.postgresql.org/mailman/listinfo/slony1-general
>>
>>    
>>
>
>_______________________________________________
>Slony1-general mailing list
>Slony1-general at gborg.postgresql.org
>http://gborg.postgresql.org/mailman/listinfo/slony1-general
>  
>


-- 
Brad Nicholson  416-673-4106    bnichols at ca.afilias.info
Database Administrator, Afilias Canada Corp.