thank you.

But the Makefile is so simple and Not use "cc".

#################################

obj-m   := task_01.o

 CFLAGS_task_01.o := -DDEBUG

KDIR:=/lib/modules/`uname -r`/build

PWD:=$(shell pwd)

default:

    echo $KDIR

    $(MAKE) -C $(KDIR) M=$(PWD) modules

#################################

So, how to add "CFLAGS"?