Actually, there is a much faster and better (IMO) way to take care of that. requiredbuilder takes kind of long to determine deps and asks too many questions..
Method 1: Use checkinstall to after make to create the package
Method 2: In case metho1 fails or in case you're building an odd application or if you just chose to do things this way, here is how you do it
makeslapt --tlz/--tgz <packagename-Version_arch_build.tlz/tgz>
Both ways will get you the slack-required built into the package