[Groff] 1.18

[Stephen Putnam]

Pleased to see the new version, but having trouble compiling it.
Platform - SCO Openserver 5.0.5, Using gcc 2.95.2

make proceeds fine until:
----------------
gmake[2]: Entering directory `/tmp/groff-1.18/contrib/mom'
test -d examples || /tmp/groff-1.18/mkinstalldirs examples
test -f penguin.ps || cp /tmp/groff-1.18/contrib/mom/examples/penguin.ps .
GROFF_BIN_PATH=`echo /tmp/groff-1.18/src/roff/groff 
/tmp/groff-1.18/src/roff/troff /tmp/groff-1.18/src/devices/grops | sed -e 's| 
\+|:|g'`; export GROFF_BIN_PATH; /tmp/groff-1.18/src/roff/groff/groff 
-F/tmp/groff-1.18/font -M/tmp/groff-1.18/tmac -M/tmp/groff-1.18/contrib/mom 
-Tps -mom examples/macros.mom >examples/macros.ps
/tmp/groff-1.18/tmac/ps.tmac:38: warning: `fchar' not defined (probable missing 
space after `fc')
/tmp/groff-1.18/tmac/ps.tmac:39: warning: `fchar' not defined (probable missing 
space after `fc')
--------------
/tmp/groff-1.18/tmac/ps.tmac:60: warning: `defcolor' not defined (probable 
missing space after `de')
/tmp/groff-1.18/tmac/ps.tmac:61: warning: `defcolor' not defined (probable 
missing space after `de')
---------------
/tmp/groff-1.18/tmac/latin1.tmac:9: warning: `trin' not defined (probable 
missing space after `tr')
/tmp/groff-1.18/tmac/latin1.tmac:10: warning: `trin' not defined (probable 
missing space after `tr')
---------------
You need GNU troff version 1.18 or higher to run this version of mom!
gmake[2]: *** [examples/macros.ps] Error 1
gmake[2]: Leaving directory `/tmp/groff-1.18/contrib/mom'
gmake[1]: *** [contrib/mom] Error 2
gmake[1]: Leaving directory `/tmp/groff-1.18'
gmake: *** [all] Error 2
------------------

Where am I going wrong? Grateful for any help.

Thanks

-- 
    ==================================================================
    Stephen Putnam, St Ives, Cornwall.       address@hidden
    http://www.st-ives-vet.co.uk