CFLAGS = -O6 CC = gcc LIBS = -lm perc:perc.o rnglong.o $(CC) $(CFLAGS) -o perc $(LIBS) perc.o rnglong.o perc.o:perc.c rnglong.h Makefile $(CC) $(CFLAGS) -c perc.c rnglong.o:rnglong.c rnglong.h Makefile $(CC) $(CFLAGS) -c rnglong.c