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[ts-7000] Re: Build kernel module

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Subject: [ts-7000] Re: Build kernel module
From: "Jaan" <>
Date: Tue, 03 May 2011 11:09:01 -0000
Hi,

Your KERNELDIR should be a symbolic link in /lib/modules/--version--/build 
which should point to the kernel source directory, maybe something like 
/home/user/mykernel (usually, when not cross compiling, it is something like 
/usr/src/linux-version) ... I think you should try to ignore this symbolic link 
and write the directory to this Makefile as it is in your system. Something 
like:
  KERNELDIR ?= /home/my-user-name/path-to-kernel-source

And, when you say:
  ...the process fails
then you should write, what is the output of the compile/make process.

Hope some of this helps,
Jaan

--- In  "Blagoj" <> wrote:
>
> Hello,
> I'm new in linux and embedded and i'm stuck on a simple issue..
> I'm using source for kernel 2.6.24 and i'm able to successfully build kernel 
> and start it. I'm using ELDK build tools. But when i try to build a simple 
> load module the process fails. I assume that there's something wrong with the 
> make file but i'm not sure how to fix it... the make file that i'm using is 
> at the end of this message.
> I suspect that i should change the KERNELDIR but i'm not sure what to state 
> there?
> Best regards,
> Blagoj
> 
> # Comment/uncomment the following line to disable/enable debugging
> #DEBUG = y
> 
> # Add your debugging flag (or not) to CFLAGS
> ifeq ($(DEBUG),y)
>   DEBFLAGS = -O -g # "-O" is needed to expand inlines
> else
>   DEBFLAGS = -O2
> endif
> 
> EXTRA_CFLAGS += $(DEBFLAGS) -I$(LDDINCDIR)
> 
> ifneq ($(KERNELRELEASE),)
> # call from kernel build system
> 
> obj-m   := simple.o
> 
> else
> 
> KERNELDIR ?= /lib/modules/$(shell uname -r)/build
> PWD       := $(shell pwd)
> 
> default:
>     $(MAKE) -C $(KERNELDIR) M=$(PWD) LDDINCDIR=$(PWD)/../include modules
> 
> endif
> 
> clean:
>     rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
> 
> depend .depend dep:
>     $(CC) $(CFLAGS) -M *.c > .depend
> 
> ifeq (.depend,$(wildcard .depend))
> include .depend
> endif
>




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