dvi2bitmap is packaged in two slightly different ways, one which respects the bundling conventions of the Starlink Project, and one which is more usual for network-distributed software.
When you unpack the distribution tarball, you should find at least
the files dvi2bitmap_source.tar, Makefile.starlink and
mk. If you're on a Starlink machine, you can, and should,
build the software the Starlink way, using the mk script (see
Section 3.2); but if you're not, you should unpack the
dvi2bitmap_source.tar file, and build it the conventional way
(see Section 3.1). Since the Starlink mk
script is really just a driver for the Makefile within the tar file,
you should get the same results both ways.