Hi all
       I want to compile a kernel module.The source code file ,written by
native skin, prepared to compile is named "kernel-test.c".The comment of
makefile is described as follows£º
       ifneq ($(KERNELRELEASE),)
obj-m :=kernel-test.o
else
KSRC ?=/usr/src/xenomai/linux-2.6.31.8
PWD     :=$(shell pwd)
default:
$(MAKE) -C  $(KSRC)    M=$(PWD)        modules
endif
        I tried to compile kernel module.Then I got:
make -I/usr/xenomai/include/  ARCH=arm CROSS_COMPILE=arm-linux-
make -C  /usr/src/xenomai/linux-2.6.31.8
 M=/home/zhengyi/xenomai-program/kernel        modules
make[1]: Entering directory `/usr/src/xenomai/linux-2.6.31.8'
  CC [M]  /home/zhengyi/xenomai-program/kernel/kernel-test.o
/home/zhengyi/xenomai-program/kernel/kernel-test.c:1:25: native/task.h: No
such file or directory
/home/zhengyi/xenomai-program/kernel/kernel-test.c:5: error: parse error
before "task_desc"
/home/zhengyi/xenomai-program/kernel/kernel-test.c:5: warning: type defaults
to `int' in declaration of `task_desc'
/home/zhengyi/xenomai-program/kernel/kernel-test.c:5: warning: data
definition has no type or storage class
/home/zhengyi/xenomai-program/kernel/kernel-test.c: In function `task_body':
/home/zhengyi/xenomai-program/kernel/kernel-test.c:9: error: implicit
declaration of function `printk'
/home/zhengyi/xenomai-program/kernel/kernel-test.c: In function
`init_module':
/home/zhengyi/xenomai-program/kernel/kernel-test.c:17: error: implicit
declaration of function `rt_task_create'
/home/zhengyi/xenomai-program/kernel/kernel-test.c:21: error: `T_FPU'
undeclared (first use in this function)
/home/zhengyi/xenomai-program/kernel/kernel-test.c:21: error: (Each
undeclared identifier is reported only once
/home/zhengyi/xenomai-program/kernel/kernel-test.c:21: error: for each
function it appears in.)
/home/zhengyi/xenomai-program/kernel/kernel-test.c:21: error: implicit
declaration of function `T_CPU'
/home/zhengyi/xenomai-program/kernel/kernel-test.c:23: error: implicit
declaration of function `rt_task_start'
/home/zhengyi/xenomai-program/kernel/kernel-test.c:23: error: `NULL'
undeclared (first use in this function)
/home/zhengyi/xenomai-program/kernel/kernel-test.c:24: error: implicit
declaration of function `pause'
/home/zhengyi/xenomai-program/kernel/kernel-test.c: In function
`cleanup_module':
/home/zhengyi/xenomai-program/kernel/kernel-test.c:29: error: implicit
declaration of function `rt_task_delete'
make[2]: *** [/home/zhengyi/xenomai-program/kernel/kernel-test.o] error 1
make[1]: *** [_module_/home/zhengyi/xenomai-program/kernel] error 2
make[1]: Leaving directory `/usr/src/xenomai/linux-2.6.31.8'
make: *** [default] error 2

It seems that my problem is caused by  Xenomai head file directory.How to
solve my proble?Thank you.
regards
yizheng