cc -S -O -DPDP11 -DDDTLM -DDDTCAT -DDDTNIN $1.c
echo '1,$s/csv/ddtcsv/
1,$s/cret/ddtcret/
w
q
' | ed $1.s
cc -c $1.s
mv $1.o $1.oo
nobss -l $1.oo ../dobj/$1.o
rm $1.s $1.oo