- mv Makefile Makefile.tmp
- $(YACC) $(YFLAGS) regexp.y
- sed '/^#Depend/q' <Makefile.tmp >Makefile
- $(CPP) -M $(DEFS) *.c |sed 's/y\.tab\.o/regexp.o/g'|sed 's/y\.tab\.c/regexp.y/g' >>Makefile
- -rm Makefile.tmp
+ sed '/^#Depend/q' <Makefile >Makefile.tmp
+ $(CPP) -M $(DEFS) *.c >>Makefile.tmp
+ mv -f Makefile.tmp Makefile