linux-kernel - Re: Fwd: Using select in boolean dependents of a tristate symbol

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Message-Id: <200607192041.k6JKfK6u005519@turing-police.cc.vt.edu>
Date:	Wed, 19 Jul 2006 16:41:20 -0400
From:	Valdis.Kletnieks@...edu
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Roman Zippel <zippel@...ux-m68k.org>, linux-kernel@...r.kernel.org
Subject: Re: Fwd: Using select in boolean dependents of a tristate symbol

On Wed, 19 Jul 2006 16:17:38 EDT, Dmitry Torokhov said:

> Another question for you  - what is the best way to describe
> dependancy of a sub-option on a subsystem so you won't end up with the
> subsystem as a module and user built in. Something like
> 
> config IBM_ASM
>         tristate "Device driver for IBM RSA service processor"
>         depends on X86 && PCI && EXPERIMENTAL
> ...
> config IBM_ASM_INPUT
>         bool "Support for remote keyboard/mouse"
>         depends on IBM_ASM && (INPUT=y || INPUT=IMB_ASM)
> 
> But the above feels yucky. Could we have something like:
> 
>          depends on matching(INPUT, IBM_ASM)

What feels yucky is the dependency of a 'bool' on a tristate.  Does the
ASM_INPUT get used in places where the source file can only be a builtin,
not a module?

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