1 # To build modules outside of the kernel tree, we run "make"
2 # in the kernel source tree; the Makefile these then includes this
3 # Makefile once again.
4 # This conditional selects whether we are being included from the
5 # kernel Makefile or not.
6 ifeq ($(KERNELRELEASE),)
7
8 # Assume the source tree is where the running kernel was built
9 # You should set KERNELDIR in the environment if it's elsewhere
10 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
11 # The current directory is passed to sub-makes as argument
12 PWD := $(shell pwd)
13
14 modules:
15 $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
16
17 modules_install:
18 $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
19
20 clean:
21 rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
22
23 .PHONY: modules modules_install clean
24
25 else
26 # called from kernel build system: just declare what our modules are
27 obj-m := hello.o
28 endif
在lwn.net上可以找到这个例子,你可以把以上两个文件放在你的某个目录下,然后执行make,也许你不一定能成功,因为Linux Kernel 2.6要求你编译模块之前,必须先在内核源代码目录下执行make,换言之,你必须先配置过内核,执行过make,然后才能make你自己的模块。原因就不细说了,你按着要求的这么去做就行了。在内核顶层目录make过之后,你就可以在你当前放置Makefile的目录下执行make了。make之后你就应该看到一个叫做hello.ko的文件生成了,恭喜你,这就是你将要测试的模块。
执行命令,