% cd /midas/98NOV/util/ltape
% make
And, as superuser, copy the binary and man-page files to standard system directories (e.g.: /usr/local/bin and /usr/man/manl):
# cp /midas/98NOV/util/exec/ltape.exe /usr/local/bin/ltape
# cp /midas/98NOV/util/ltape/ltape.l /usr/man/manl/ltape.l