Android下独立编译.ko文件

在Android环境下独立编译.ko文件，这和在Linux下模块化编译驱动程序相同，Makefile文件写法如下：

ifneq ($(KERNELRELEASE),)

obj-m += KmemleakTest.o
KmemleakTest-objs := kmemleak_test.o
else

    KERNELDIR ?= <源码目录>/out/target/product/poplar/obj/KERNEL_OBJ
    PWD ?= $(shell pwd)
    ARCH = arm64
    CROSS_COMPILE=<源码目录>/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-

.PHONY: modules clean

modules:
    $(MAKE) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C $(KERNELDIR) M=$(PWD) modules
    
clean:
    @rm -rf *.o *.order *.symvers *.mod.* .*.o.cmd .*.mod.o.cmd .*.ko.cmd .tmp_versions *.ko

endif