Device Driver. Make file,External module

Question

I'm trying to cross compile a helloworld kernel (2.6.x) module for ARM architecture on my intel x86 host.

The tool chain for ARM is located at: /home/vivek/ti-sdk-am335x-evm-05.07.00.00/linux-devkit/bin

The kernel source is located at: /home/vivek/Arago

The hellow.c and Makefile are located on Desktop on /home/vivek/Desktop/hellodriver

I have given the path for cross compiler as /home/vivek/ti-sdk-am335x-evm-05.07.00.00/linux-devkit/bin

My Makefile is follows:-

export ARCH=arm

export CROSS_COMPILE=arm-arago-linux-gnueabi-

obj-m  =Hello.o

KDIR =/home/vivek/Arago

PWD = $(shell pwd)

default:
      $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
clean:
      $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) clean

On executing make I am getting

vivek@ubuntu:~/Desktop/hellodriver$ make

               make: Nothing to be done for `default'.

What am I doing wrong?

Answer 1

There is mistake in your Makefile. As your source code name is hellow.c, But in your Makefile its Hello.o.

So change your obj-m =Hello.o to obj-m =hellow.o

And one more thing Etan Reisner said above make sure you using Tab for command in Makefile.