Interdata_v6/usr/source/troff/cmds/make

Find at most related files.
including files from this version of Unix. 
echo == making formatters
echo = suffix tables
as suftab.s
ld -s -o nsuftab a.out
rm a.out

echo = nroff
cc -o nroff -DNROFF -n  n[123456789].c n10.c ni.c nii.c ntab.c hytab.c

: echo = troff
: cc -o troff -n n[12345789].c t6.c t10.c ni.c nii.c tab3.c hytab.c