V5/usr/c/trc

Find at most related files.
including files from this version of Unix. 
cvopt $1.s $1.i
/lib/c2 $1.i $1.x
as $1.x
if -r a.out rm $1.i $1.x
mv a.out $1.o
ar r tab.a $1.o
rm $1.o