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.