CC=gcc           # The word "CC" can replace "gcc"   PROGS=listener      # For the same reason,"PROGS" can replace "gdserver"CFLAGS=-WallPRJName=listener$(PRJName):$(PRJName).o	$(CC) $(PRJName).o -o $(PRJName)$(PRJName).o:$(PRJName).c	$(CC) -c $(PRJName).c -o $(PRJName).oclean:	rm -f *.o	rm -f *.s	rm -f *.out	rm -f $(PRJName)