No subject

[Vladimir Murzin]

On Tue, Apr 10, 2012 at 10:48:14AM +0600, Martynov Semen wrote:
> <one more time in plain text>
> 
> Yes, of course.
> It contains only one line:
> 
> obj-$(CONFIG_MY_PROCLISTOUTPUT) += proclistoutput.o
> 
> and works with Kconfig
> 
> config MY_PROCLISTOUTPUT
>     tristate "Display a list of processes"
>     default y
>     ---help---
>      This module prints a list of processes
> 
> 
> But I'm sure that the reason is not in my file, because:
> - If I put my code in a folder /drivers (and include my Makefile and Kconfig) then everything works perfectly (I can build kernel object and I can built-in my code to the kernel)
> - If I put my code in a folder /samples (and include my Makefile and Kconfig) then build-in the code I can't, but with .ko it works fine...
> 
> I suppose that the reason in the kernel Makefile. The root Makefile contains this code (http://lxr.free-electrons.com/source/Makefile#L914)
> 
> ifdef CONFIG_SAMPLES
>          $(Q)$(MAKE) $(build)=samples
> endif
> 
> where
> $(Q) = @
> $(build) = -f scripts/Makefile.build obj
> 
> and further I lose understanding of the events...
> 
> 
> 10.04.2012, 08:26, "Vladimir Murzin" <murzin.v at gmail.com>:
> > Hi Semen
> >
> > Could you share a Makefile for your module?
> >
> > Best wishes,
> > Vladimir Murzin
> >
> > -----Original Message-----
> > From: Martynov Semen <semen-martynov at yandex.ru>
> > Sender: kernelnewbies-bounces at kernelnewbies.org
> > Date: Mon, 09 Apr 2012 23:56:15
> > To: kernelnewbies at kernelnewbies.org<kernelnewbies at kernelnewbies.org>
> > Subject: No subject
> >
> > Good afternoon,
> >
> > I would like to understand, why I can't make the built-in object, when my code is in a folder /samples...
> >
> > I have my module-code and if I put it in a folder /samples, I can receive only loadable module (.ko) but if I want to receive the built-in object - it turns out nothing (.о-file is created, but my code doesn't get in a kernel). When I allocate my module-code in any other folder (for example, /drivers) it works normally - I can receive .ko and I can make the built-in object.
> >
> > Question - why I can't receive the built-in object when my code is in the folder /samples? What instruction in a make-file restricts it, and how?
> >
> > P.S.: Sorry for my english.
> > --
> > Best regards,
> > Semen A Martynov.
> >
> > Saint Petersburg, Russia.
> > https://www.facebook.com/semen.martynov
> >
> > _______________________________________________
> > Kernelnewbies mailing list
> > Kernelnewbies at kernelnewbies.org
> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> -- 
> 
> 
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Hi Semen

It happens because ./script isn't listed as a subdir for visiting and
linking objects into vmlinux. Please, refer to [1] for details.

[1] http://lxr.linux.no/linux+*/Makefile#L508

Best wishes,
Vladimir Murzin