This is a fair point. :) That said, it works on more that what is advertised. At the time of writing it also worked on the current branch of NetBSD, and OpenB

This is a fair point. :) That said, it works on more that what is advertised. At the time of writing it also worked on the current branch of NetBSD, and OpenBSD provided you install manually a modern version of bmake. It also used to work on Cygwin, but I am not sure of the current status.