kmk and its helper tools are an extension to GNU make to ease writing portable Makefile. There is not a lot of documentation though. A starting point is <http://svn.netlabs.org/kbuild>.
On Debian systems the kBuild binaries can be found in /usr/bin, its data files in /usr/share/kBuild and its documentation in /usr/share/doc/kbuild.
Torsten Werner <firstname.lastname@example.org>