If you did dmd -c -o- *.d
that'd be as close as you can get (I think). -c means compile only, don't link, and -o- means don't write the object file, so it will skip the final part of building.
and *.d of course is the files in your project. Compiling them all at once by putting them all on the command line generally works best and fastest with compiling D.
