building "out of the source tree" kernel module - linux

Question

I'm building a sample kernel module under linux . The module sources are "out of the kernel tree". I've got kernel source tree from git. But it takes time to configure the kernel. So at this moment i'm just trying to build the module against kernel headers provided by my Distribution.
My Makefile :
KVERSION=$(shell uname -r)
PWD := $(shell pwd)
all:
make -C /lib/modules/$(KVERSION)/build/ M=$(PWD) modules
clean:
make -C /lib/modules/$(KVERSION)/build M=$(PWD) clean
$(info Building with KERNELRELEASE = ${KERNELRELEASE})
obj-m := hello.o
But make stops with reporting that i could not find etc, that means it could not find the headers.
but the files are there :
$ls /lib/modules/$(uname -r)/build
$arch block crypto drivers firmware fs include init ipc kernel lib Makefile Makefile.common mm Module.symvers net samples scripts security sound System.map tools usr virt
I guess its a trivial problem. But still i could not find the solution.
Thanks in advance.
EDIT: Errors :
Building with KERNELRELEASE =
make -C /lib/modules/2.6.32-220.el6.x86_64/build/ M=/usr/local/src/kernel_mods
make[1]: Entering directory `/usr/src/kernels/2.6.32-220.el6.x86_64'
Building with KERNELRELEASE = 2.6.32-220.el6.x86_64
LD /usr/local/src/kernel_mods/built-in.o
CC [M] /usr/local/src/kernel_mods/hello.o
/usr/local/src/kernel_mods/hello.c:2:27: error: linux/modules.h: No such file or directory
/usr/local/src/kernel_mods/hello.c:21: error: expected declaration specifiers or â...â before string constant
/usr/local/src/kernel_mods/hello.c:21: warning: data definition has no type or storage class
/usr/local/src/kernel_mods/hello.c:21: warning: type defaults to âintâ in declaration of âMODULE_LICENSEâ
/usr/local/src/kernel_mods/hello.c:21: warning: function declaration isnât a prototype
/usr/local/src/kernel_mods/hello.c:22: error: expected declaration specifiers or â...â before string constant
/usr/local/src/kernel_mods/hello.c:22: warning: data definition has no type or storage class
/usr/local/src/kernel_mods/hello.c:22: warning: type defaults to âintâ in declaration of âMODULE_AUTHORâ
/usr/local/src/kernel_mods/hello.c:22: warning: function declaration isnât a prototype
/usr/local/src/kernel_mods/hello.c:23: error: expected declaration specifiers or â...â before string constant
/usr/local/src/kernel_mods/hello.c:23: warning: data definition has no type or storage class
/usr/local/src/kernel_mods/hello.c:23: warning: type defaults to âintâ in declaration of âMODULE_DESCRIPTIONâ
/usr/local/src/kernel_mods/hello.c:23: warning: function declaration isnât a prototype
make[2]: *** [/usr/local/src/kernel_mods/hello.o] Error 1
make[1]: *** [_module_/usr/local/src/kernel_mods] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.32-220.el6.x86_64'
make: *** [all] Error 2

Answer 1

I think you meant to do
#include <linux/module.h>
rather than
#include <linux/modules.h>