I mean i will make the links my self.

Well, sorry then. But really, many slackware packages contain a postintallation script which should be run to complete package installation. Even if you don't want to use instalpkg to install them, you can still run it manually.:
cd /
tar xvf package-name
. install/doinst.sh
Some of the scripts contain dozens of link-creation lines -waiting till you bump into non-existant links and then fixing them manually is not too great -especially when they are library links. Plus, installpkg runs ldconfig after installing packages, so unless you also do that you may be missing still other links. And, many of these installation scripts contain other code which performs other actions which may be essential to the functioning of the package. Why not just install and use the proper tools?

That's enough sniping at each other---Since OP says problem is solved, this is closed.