You can enable this module by creating a symbolic
link from /var/www/conf/php5.sample/pdo_pgsql.ini to
/var/www/conf/php5/pdo_pgsql.ini.

ln -fs /var/www/conf/php5.sample/pdo_pgsql.ini \
	/var/www/conf/php5/pdo_pgsql.ini

