[Groff] pdfroff 1.22 calls groff 1.19 -help

[Anton Shterenlikht]

This is on FreeBSD 10.2-RELEASE-p9,
with base OS groff, /usr/bin/groff at 1.19.2,
and groff-1.22.2_3 istalled via packages
under /usr/local/bin.

When I try to run pdfroff 1.22, it pulls
groff 1.19:

$ /usr/local/bin/pdfroff --version
GNU pdfroff (groff) version 1.22.2

GNU groff version 1.19.2
Copyright (C) 2004 Free Software Foundation, Inc.
GNU groff comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of groff and its subprograms
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.

called subprograms:

GNU grops (groff) version 1.19.2
GNU troff (groff) version 1.19.2
$ 

However, 1.19, the base OS version is drastically
cut down to the bare necessities of building FreeBSD
man pages only, so it does not have spdf or pdfmark
macros, hence the error:

$ /usr/local/bin/groff -Tpdf -mspdf z.1 > z.pdf
$ /usr/local/bin/pdfroff -mspdf z.1 > z.pdf
troff: fatal error: can't find macro file spdf
troff: fatal error: can't find macro file spdf
$ 

I can't see anything relevant in pdfroff man page.

Please help

Thanks

Anton