obj-m += cdc-acm.o

all:
	make ARCH=arm CROSS_COMPILE=/path/to/arm/compiler/compiler_name- -C /path/to/kernel/source/ M=$(PWD) modules
	
clean:
	make ARCH=arm CROSS_COMPILE=/path/to/arm/compiler/compiler_name- -C /path/to/kernel/source/ M=$(PWD) clean