linux-kernel - Re: KCONFIG_ALLCONFIG + allmodconfig = brokenness

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Date:	Sun, 29 Dec 2013 18:22:26 -0800
From:	Randy Dunlap <rdunlap@...radead.org>
To:	"H. Peter Anvin" <hpa@...or.com>, linux-kbuild@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: KCONFIG_ALLCONFIG + allmodconfig = brokenness

On 12/29/13 17:32, H. Peter Anvin wrote:
> When KCONFIG_ALLCONFIG is used with "make allmodconfig", the result ends
> up being largely the same as "make allyesconfig", because the resulting
> kernel ends up with CONFIG_MODULES=n:
> 
> How to reproduce:
> 
> : tazenda 125 ; make O=../o.test allmodconfig
>   GEN     /home/hpa/kernel/o.test/Makefile
> scripts/kconfig/conf --allmodconfig Kconfig
> #
> # configuration written to .config
> #
> : tazenda 126 ; grep CONFIG_MODULES ../o.test/.config
> CONFIG_MODULES_USE_ELF_RELA=y
> CONFIG_MODULES=y
> : tazenda 127 ; env KCONFIG_ALLCONFIG=/dev/null make O=../o.test
> allmodconfig
>   GEN     /home/hpa/kernel/o.test/Makefile
> scripts/kconfig/conf --allmodconfig Kconfig
> #
> # configuration written to .config
> #
> : tazenda 128 ; grep CONFIG_MODULES ../o.test/.config
> CONFIG_MODULES_USE_ELF_RELA=y
> # CONFIG_MODULES is not set
> --

Yes, I discovered this a few weeks ago.
I just ended up adding
CONFIG_MODULES=y
to my KCONFIG_ALLCONFIG file.

There was a comment in the git commit for it about this (that I discovered
during my "research" into it), but I can't find it just now.

I wasn't fond of the change either.


-- 
~Randy
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