pkgtool-installpkg and the with-pgsql=/path doesnt exist in slackware

Hi, I have slackware and my problem is con add "with-psql=path". In
slackware i installen php and postgresql with pkgtool and installpkg and
that tools doesn't have the prefix configuration or I don't know how to type
on them.

SO, I cant communitate my PHP and my Postgres and apache.
Thxz.