linux-kernel - Re: [PATCH] Clarify CONFIG_DEBUG

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Message-ID: <CA+55aFzXvPseHVZOk82hTpFrQYRnHnq-5TBz5Jw__wuktUgi2w@mail.gmail.com>
Date:	Tue, 4 Feb 2014 08:36:14 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
	Richard Weinberger <richard@....at>,
	Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH] Clarify CONFIG_DEBUG_INFO's bloaty nature

On Tue, Feb 4, 2014 at 1:08 AM, Ingo Molnar <mingo@...nel.org> wrote:
>
>  config SAVE_TIME_AND_DISK_SPACE
>         bool "Faster and leaner build object files: compile without debug info"
>         default y

Thinking about it, we already have this. It's called "CONFIG_COMPILE_TEST".

It very much gets set by all{yes,mod}config, and it also says "we're
interested in testing the compile, not so much running the result".

So let's just make the DEBUG_INFO depend on !COMPILE_TEST.

Trivial oneliner patch (independent of the discussion about improving
the documentation), so I'll just apply it.

I can't imagine that this would be controversial:

   config DEBUG_INFO
          bool "Compile the kernel with debug info"
  -       depends on DEBUG_KERNEL
  +       depends on DEBUG_KERNEL && !COMPILE_TEST
          help

Hm?

              Linus
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