CC = gcc CFLAGS = -Wall -O2 -std=c99 -DSAFE EXE = xxtea FILES = main.c xxtea.c OBJS = main.o xxtea.o TESTFILE= test.out all: $(FILES) $(CC) $(CFLAGS) $(FILES) -o $(EXE) clean: rm -f $(EXE) $(OBJS)