linux-kernel - Re: Why is CONFIG

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Message-ID: <b3cf8faf-ef04-2f55-3ccb-772e18a57d7b@infradead.org>
Date:   Mon, 30 Dec 2019 16:36:22 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Rob Landley <rob@...dley.net>, linux-kernel@...r.kernel.org
Subject: Re: Why is CONFIG_VT forced on?

On 12/30/19 4:30 PM, Rob Landley wrote:
> On x86-64 menuconfig, CONFIG_VT is forced on (in drivers->char devices->virtual
> terminal), but the help doesn't mention a "selects", and I didn't spot anything
> obvious in "find . -name 'Kconfig*' | xargs grep -rw VT".
> 
> Congratulations, you've reinvented "come from". I'm mostly familiar with the
> kconfig plumbing from _before_ you made it turing complete: how do I navigate this?
> 
> I'm guessing "stick printfs into the menuconfig binary" is the recommended next
> step for investigating this? Or is there a trick I'm missing?

I've never had to resort to that trick.

> Rob
> 

config VT
	bool "Virtual terminal" if EXPERT
	depends on !UML
	select INPUT
	default y
	^^^^^^^^^^^^^^^^^^^

That's all it takes ^^^^^^^^^^^^^^^^.

Does that explain it?  Maybe I don't understand the problem.

-- 
~Randy