linux-kernel - Re: Problems Compile Misc Module Example

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Message-ID: <AANLkTimkYhwVy3XdMvBb9oqVVOFb9MSjivrMfgM+B7_w@mail.gmail.com>
Date:	Thu, 12 Aug 2010 18:09:38 +0200
From:	Pistis Valentino <vale.pistis@...il.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Problems Compile Misc Module Example

Hello,

to be fair, I write how I solved my problem:

i have 2 files driver_ase.c and driver_ase.h.

Inside a .h file there was some declarations includes for kernel
headers used only by driver_ase.c.
This includes declarations make a problems during compile the service_ase.c.

In other words the problem is not in the kernel, but is my C (header)
kow-how  problem.

Sorry

Ciao
Vale

P.S. Make and Compile the kernel modules it's very hard! lacks a
coherent and updated documentation for non-experts.


2010/8/12 Pistis Valentino <vale.pistis@...il.com>:
> Yes i used this Makefile for compiling a module (and no errors),
> but the problem is in the compiling the service_ase.
>
> The section 2 of Documentation describe the same makefile that i use.
>
> I do not know what else to do
>
> ============== Makefile ================
>
> obj-m := driver_ase.o
>
> KDIR    := /lib/modules/$(shell uname -r)/build
> PWD     := $(shell pwd)
>
> all:
>        $(MAKE) -C $(KDIR) M=$(PWD) modules
>
> clean:
>        $(MAKE) -C $(KDIR) M=$(PWD) clean
> ===========================================
>
>
>
> 2010/8/12 Randy Dunlap <randy.dunlap@...cle.com>:
>> On Thu, 12 Aug 2010 01:46:27 +0200 Pistis Valentino wrote:
>>
>>> Hello everyone,
>>>
>>> I'm studying how to build kernel modules.
>>> Right now I have found some strange errors and nothing solutions in the web.
>>>
>>> I compiled my kernel module "driver_ase" whose files are driver_ase.h,
>>> driver_ase.c.
>>> No errors in compilation, the module is also loaded correctly.
>>>
>>> I wrote a small service "service_ase.c" using the kernel module that I created.
>>> I found a lot of errors.
>>> the only explanation IMO is that the directory has been renamed  from
>>> "/usr/src/linux-2.6.34.2/include/asm" in
>>> "/usr/src/linux-2.6.34.2/include/asm-generic", the errors make me
>>> think that some header file has not yet updated.
>>>
>>> You may like this or something wrong?
>>>
>>> Could you help me please?
>>>
>>> I'm using Debian Sidux with 2.6.34.2 kernel compiled.
>>>
>>> In the bottom of the mail has the source codes, and the error.
>>> It is a bit long error message, sorry!
>>
>> You need a minimal Makefile.
>> Please see Documentation/kbuild/modules.txt, section 2. How to build external modules.
>>
>>
>> ---
>> ~Randy
>> *** Remember to use Documentation/SubmitChecklist when testing your code ***
>>
>
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