I've searched high and low and haven't found anything. Perhaps I don't know what to search for.

Environment is Ubuntu Lucid (10.4) with PHP 5.2.4 & PostgreSQL 9.2. 

PHP is "held" at 5.2.4 with `dpkg --set-selections`. I can only find a 5.2.6 version of php5-pgsql, and when I try to install using dpkg, it complains that PHP is at 5.2.4. 

Trial run with `aptitude install php5-pgsql` tells me that it wants to upgrade to PHP 5.3.

Edit: Upgrading PHP is not currently an option.

I should add: I tried building PHP 5.2.4 from source using `--with-pgsql --with-pdo-pgsql`. Did not get any extensions as a result. Both libpq and libpq-dev are installed.