There's no makefile.  Compile bb.c (or 5bb.c if you've unix V) and put
the output in bb.  fix the shell scripts lcomp, lcc.  good luck. [instr.c is
included in bb.c, so doesn't get compiled.
cc -c nexit.c -o nexit.o; cc -o lprint lprint.c, and that's it]
.
