Issue compiling Kernel Module

I have recently started with Device Drivers in Linux and have made a simple Hello world module.

My code is this //--------------------------------------------------------- /* My first kernel Module */

#include <linux/init.h>
#include <linux/module.h>

static init my_init(void){
         printk(KERN_ALERT "Hello World\n");
         return 0;
}

static void my_exit(void){
         printk(KERN_ALERT "asta la vista baby\n");
}

MODULE_LICENSE("GPL");
module_init(my_init);
module_exit(my_exit); //-------------------------------------------------------------

and the makefile i am using is like this... //------------------------------------------------------------- all:
make -C /home/arun/Linux_Source M=pwd

clean:
make -C /home/arun/Linux_Source M=pwd clean

obj-m := Hello_World.o //---------------------------------------------------------------------

I receive the following error on running "$make"

//--------------------------------------------------------- make -C /home/arun/Linux_Source M=pwd
make[1]: Entering directory `/home/arun/Linux_Source'

ERROR: Kernel configuration is invalid.
include/generated/autoconf.h or include/config/auto.conf are
missing.

          Run 'make oldconfig && make prepare' on kernel src to fix it.

make[1]: *** No rule to make target Device'. Stop. make[1]: Leaving directory /home/arun/Linux_Source'
make: *** [all] Error 2 //----------------------------------------------------------

PS:
The kernel Source i am using is a Copy of my Git Repository and is a copy of the branch 3.10.25.

my system details are:
Linux linux-nwya.site 3.10.25-2.10-desktop #2 SMP PREEMPT Tue Jan 7 00:25:03 IST 2014 i686 i686 i386 GNU/Linux

Hi,

You need to have a kernel configuration in your source tree. Run make defconfig (resulting in a default configuration file for your architecture) into your kernel tree.

Valentina

The directory the -C parameter points at has to be a Linux source tree that has had at least a 'make prepare' run inside it.

In addition, to actually *use* the module, you'll need to modprobe it into a kernel built in that directory (in other words, you need to build against the source tree of the kernel you plan to be running). So you'll need to do a 'make <something>config', then a 'make' and then install and boot that kernel in order to actually test your module.

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