RE: RE: Re: [Ltib] how to build a kernel module using ltib? (docu)

[Stuart Hughes]

Hi David,

You'll have to ask the maintainer of videodev how to build it, I'm not
familiar with this.

As far as ltib goes, there is a module example.  If you do:

$ ./ltib hello_mod -m prep

It will unpack a module example.  You can the take a look at the files
in rpm/BUILD/hello_mod-1.2, which include:
COPYING  Makefile  message_mod.c  mod_main.c  README

The README has some explanations and also some links to further
information regarding building modules.

To actually build this example:

$ ./ltib -p hello_mod

If you're still having problems after then, please get back in touch on
the list.  You'll need to say how your building the videodev module.

Regards, Stuart

On Fri, 2007-03-16 at 17:19 -0700, David Warman wrote:
> Hi folks,
> 
> <resend after subscribing to the list - sorry if this is then repeated>
> 
> I am having a related problem: I am setting up to use the ov511  
> camera and the usbvideo usb capture device. Both depend on the  
> videodev module. When I modprobe videodev, I get "Unknown symbol  
> request_module" error and the probe fails. Yet I have verified that  
> kmod.o exports this label.  I am guessing that there is something  
> missing from the link commands for building videodev, but I have not  
> yet been able to find the file that contains that invocation. Forcing  
> as rebuild by deleting kmod.o and videodev.o does not fix the  
> problem. Has anybody any ideas on this?
> 
> update:
> I was getting this response to modprobe:
> 
> 11:59 PM root DavesHybrid ~]$ modprobe videodev
> videodev: Unknown symbol request_module
> insmod: cannot insert `/lib/modules/2.6.13.4/kernel/drivers/media/ 
> video/videodev.ko': Unknown symbol in module (-1): No such file or  
> directory
> modprobe: failed to load module videodev
> 
> 
> then I deleted videodev.o, ran ./ltib -- configure, forgot to check  
> kernel build, then ran it again with kernel build, and now I get this  
> response instead:
> 
> [12:06 AM root DavesHybrid ~]$ modprobe videodev
> modprobe: QM_MODULES: Function not implemented
> 
> modprobe: QM_MODULES: Function not implemented
> 
> modprobe: Can't locate module videodev
> [12:07 AM root DavesHybrid ~]$ find / -name videodev.* -print
> /lib/modules/2.6.13.4/kernel/drivers/media/video/videodev.ko
> 
> [12:08 AM root DavesHybrid ~]$
> 
> 
> Also, and btw, I think the sample_ltib_ko.tgz would be a great help,  
> but it does not show as a link; where would I find it?
> 
> 
> thanks in advance,
> 
> David Warman
> 
> 
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