linux-kernel - Re: [PATCH] Fix build failure when CONFIG

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Date:	Fri, 4 Mar 2011 10:15:09 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Narendra_K@...l.com, viro@...iv.linux.org.uk, sfr@...b.auug.org.au,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	Shyam_Iyer@...l.com, Matt_Domsch@...l.com, Charles_Rose@...l.com,
	Jordan_Hargrave@...l.com
Subject: Re: [PATCH] Fix build failure when CONFIG_NLS is set to 'm' by
 allmodconfig

On Wed, 23 Feb 2011 13:17:34 +0000
Matthew Garrett <mjg59@...f.ucam.org> wrote:

> On Wed, Feb 23, 2011 at 06:24:31PM +0530, Narendra_K@...l.com wrote:
> 
> > This patch fixes the following build breakage introduced by the patch
> > '[PATCH V3] Export ACPI _DSM provided firmware instance number and string to
> > sysfs'.
> 
> First, you should include this as part of your original patch so that 
> the build doesn't break during bisection.
> 
> > This is fixed by making fs/nls/nls_base.c compile conditionally into
> > vmlinux by introducing a new config option CONFIG_NLS_BASE which is
> > selected by (ACPI || DMI || NLS).
> 
> Why?
> 
> > -obj-$(CONFIG_NLS)		+= nls/
> > +obj-y				+= nls/
> 
> You seem to have just broken building any of the NLS code as modules.
> 
> >  menuconfig NLS
> >  	tristate "Native language support"
> > +	select NLS_BASE
> 
> All CONFIG_NLS does is build nls_base.
> 
> > +config NLS_BASE
> > +	bool "Base NLS functions"
> > +	depends on ACPI || DMI
> 
> What in this code depends on ACPI or DMI?
> 
> > -obj-$(CONFIG_NLS)		+= nls_base.o
> > +obj-$(CONFIG_NLS_BASE)		+= nls_base.o
> 
> And why make this change?
> 
> Just have something like
> 
> select NLS if (ACPI || DMI)
> 
> in drivers/pci/Kconfig.

Narendra, can you send me an updated patch including the build fix?
Either using this approach or the other one I outlined in my other mail.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center
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