linux-kernel - Re: building a specific in-tree module is currently a bit broken

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Message-ID: <20070905201153.GB30812@uranus.ravnborg.org>
Date:	Wed, 5 Sep 2007 22:11:53 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	"Robert P. J. Day" <rpjday@...dspring.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Roman Zippel <zippel@...ux-m68k.org>
Subject: Re: building a specific in-tree module is currently a bit broken

On Wed, Sep 05, 2007 at 11:43:15AM +0200, Jan Engelhardt wrote:
> 
> On Sep 5 2007 11:37, Michal Piotrowski wrote:
> >
> >Hi,
> >
> >[Adding K{build,config} wizards to CC]
> >
> >On 05/09/07, Robert P. J. Day <rpjday@...dspring.com> wrote:
> >>
> >> $ make distclean
> >> $ make defconfig
> >> $ make menuconfig      (select visor.ko to be built a module)
> >> $ make drivers/usb/serial/visor.ko
> 
> Beep. Need 'make scripts prepare' between menuconfig and visor.
Nope - kbuild does this for you.
See following lines from top-level Makefile:

%.ko: prepare scripts FORCE
        $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
        $(build)=$(build-dir) $(@:.ko=.o)
        $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

But as pointed out it fails to create MODVERDIR.
I had one take on it some time ago and do not recall why I failed
to fix it. Should be trivial.

But this is a small issue that has been there for a long time
and is not -rc material. I will try to have it fixed for
next merge window.

	Sam
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