4 flex -ocalc++-scanner.cc calc++-scanner.ll
5 bison -o calc++-parser.cc calc++-parser.yy
6 $(CC) -o calc++ calc++.cc calc++-driver.cc calc++-parser.cc calc++-scanner.cc
12 rm -f *~ *.o *.tab.* input position.hh location.hh stack.hh \
13 calc++-parser.cc calc++-parser.hh \