1CFLAGS = -O2 -Wall -D_FILE_OFFSET_BITS=64 -D _GNU_SOURCE 2TARGET = disktest 3 4 5all: $(TARGET) 6 7 8$(TARGET): disktest.c 9 $(CC) $(CFLAGS) $^ -o $@ 10 11 12clean: 13 $(RM) $(TARGET) 14