This is a slackbuild to build a package for kernel and modules. There are
a few things you need to do for this:

First thing is to edit the script for version (or you can pass version
to it on command line: VERSION=x.x.x.x ./*.SlackBuild)

Set a local name in your .config

Second if this is for a kernel to be installed on another box then you must
have the source on the target box as applications will need to use it.
I.E: /usr/src/linux-$VERSION-$LOCALNAME is used in the script but you
could customise this for building in other places.