Question on libpq.so

We are in the process of upgrading our postgres database from 7.4 to 8.2 on Redhat ES4 server.  Postgresql uses libpq.so.5.0, while libpq.so.3 was initially installed and is needed by php.  I did the postgresql 8.2.10 installation without dependency:

rpm -Uvh --nodeps postgresql-*.rpm

Then I try to recompile PHP 4.3.9 rpm, hoping that it will point to the new postgres so.  The compilation failed with the error:

Unable to load dynamic library '/usr/lib/php4/pgsql.so' - libpq.so.3: cannot open shared object file: No such file or directory in Unknown on line 0

 

Can PHP 4.3 work with postgresql 8.2, and how can I point PHP rpm to use libpq.so.5?  Thanks.

 

 

Lawrence