LinuxQuestions.org - kernel module makefile problem

- Linux - Newbie (https://www.linuxquestions.org/questions/linux-newbie-8/)

- - kernel module makefile problem (https://www.linuxquestions.org/questions/linux-newbie-8/kernel-module-makefile-problem-4175479846/)

kernel module makefile problem

sir i was trying to make a makefile
but i was not able to do that
module was simple a hello world program

#include<linux/init.h>
#include<linux/module.h>
MODULE_LISENCE("DUAL bSD/GPL");

static int hello_init(void )
{
printk(KERN_ALERT "HELLO WORLD");
return 0;
}

static int hello_exit(void)
{
printk( KERN_ALERT "thankyou cruel sworld");
}

module_init(hello_init);
module_exi(hello_exit);

its name was demo.c

i made a Makefile

obj-m = foo.o

KVERSION = $(shell uname -r)

all:
make -C /lib/modules/$(KVERSION)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(KVERSION)/build M=$(PWD) clean

but i ended up on an eror

make -C /lib/modules/3.5.0-23-generic/build M=/home/shiv/Desktop/module modules
make[1]: Entering directory `/usr/src/linux-headers-3.5.0-23-generic'
make[2]: *** No rule to make target `/home/shiv/Desktop/module/foo.c', needed by `/home/shiv/Desktop/module/foo.o'. Stop.
make[1]: *** [_module_/home/shiv/Desktop/module] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.5.0-23-generic'
make: *** [all] Error 2

kindly help

As far as I see the name of your test is demo.c you would try:
obj-m = demo.o # instead of foo.o

sir i have tried with demo.o but problem persists

please use [code]here comes your code[/code] blocks to keep your formatting and post your new makefile and the complete error message(s)

The simple module Makefile looks like this

Code:

obj-m    := demo.o



KDIR    := /lib/modules/$(shell uname -r)/build

PWD    := $(shell pwd)



default:

        $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules

sir i have succeeded in compiling the make file sucessfully.. and i have loaded the kernal sucessfully ... but pls tell me that where to look for output...
means hello world is not printed on terminal after loading it on the kernal

see man syslog about how printk handled

also, isnt that a typo?

Code:

MODULE_LISENCE("DUAL bSD/GPL");

should be MODULE_LICENSE, right?