Is there a GNU Make-type program for the D programming language?

Question

Or on Windows I guess I could use a batch script?

Answer 1

Make is language agnostic: it works equally well (or bad depending on your point of view) with any programming language.

Answer 2

I suggest you check the rdmd utility, which is part of the standard dmd distribution. rdmd takes your main module and infers all transitive dependencies from it.