linux-kernel - Re: linux-next: build failure after merge of the ext4 tree

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Date:	Fri, 9 Aug 2013 09:58:17 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	"Yann E. MORIN" <yann.morin.1998@...e.fr>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Michal Marek <mmarek@...e.cz>,
	Kevin Hilman <khilman@...aro.org>, sedat.dilek@...il.com,
	Theodore Ts'o <tytso@....edu>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Linux kbuild ML <linux-kbuild@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the ext4 tree

Hi Yann,

On Thu, 8 Aug 2013 23:54:49 +0200 "Yann E. MORIN" <yann.morin.1998@...e.fr> wrote:
>
> Ok, I've had a look in the linux-next archives, and I think I got it.
> Is the following right?
> 
>     git clean -d; git clean -dX     # To be sure tree is clean
>     touch empty
>     make KCONFIG_ALLCONFIG=empty allmodconfig
>     grep MODULES .config
>     $ CONFIG_MODULES is not set

Yes, that is what I am seeing.

> If so, I think I found the reason: the modules symbol is _always_ set to
> being valid as soon as KCONFIG_ALLCONFIG is read, even if it was not
> present in that file.
> 
> Since it is set to be valid, the following change means it is not
> affected another value later on.
> 
> So, I wonder what the best option is:
>   1- revert the following, and find another solution,
>   2- de-specialise the modules symbol,
>   3- or further specialise the modules symbol.
> 
> I'd be inclined to go for 1, but I have no straightforward idea so far.
> It's late here, so I'll look more thouroughly this WE.

Thanks.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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