linux-kernel - Re: [PATCH 1/1] kconfig: warn if an unknown symbol is selected

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Date:	Wed, 28 Jan 2015 16:26:50 +0100
From:	Michal Marek <mmarek@...e.cz>
To:	Paul Bolle <pebolle@...cali.nl>
CC:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] kconfig: warn if an unknown symbol is selected

On 2015-01-28 10:54, Paul Bolle wrote:
> Now that we've been told Yann has disappeared, would you consider taking
> this patch into one of your trees? It would be nice to have people
> actually use it for a while.
> 
> Or should we first clean up (most of) the warnings it generates? There

It seems your fixes have been accepted in the meantime, but there is one
new:
*** Default configuration is based on 'x86_64_defconfig'
drivers/misc/cxl/Kconfig:8:warning: 'CXL_BASE' selects unknown symbol
'PPC_COPRO_BASE'

PPC_COPRO_BASE is not known on x86, but at the same time, there is no
way for CXL_BASE to be selected on x86:

config CXL_BASE
	bool
	default n
	select PPC_COPRO_BASE

config CXL
	tristate "Support for IBM Coherent Accelerators (CXL)"
	depends on PPC_POWERNV && PCI_MSI
	select CXL_BASE
	default m

Shouldn't we only warn about a select when it is triggered? An
allyesconfig would still report all bogus selects for given architecture.

Michal
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