linux-kernel - Re: [PATCH 1/4] kbuild: introduce KBUILD_CONFIG; unexpose KCONFIG

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Date:	Fri, 16 Sep 2011 14:31:07 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Arnaud Lacombe <lacombar@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 1/4] kbuild: introduce KBUILD_CONFIG; unexpose KCONFIG_CONFIG

On 16.8.2011 07:34, Arnaud Lacombe wrote:
> Refine the Kbuild interface to expose it's own variable to architecture
> Makefile's and prepare Kconfig environment prior to any %config invocation.
> 
> Signed-off-by: Arnaud Lacombe <lacombar@...il.com>
> ---
>  Makefile                                |    8 ++++++--
>  arch/arm/boot/compressed/Makefile       |    2 +-
>  arch/unicore32/boot/compressed/Makefile |    2 +-
>  scripts/kconfig/Makefile                |    3 +++
>  4 files changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index b4ca4e1..26798a4 100644
> --- a/Makefile
> +++ b/Makefile
[...]
> +# Prepare Kconfig environment
> +KCONFIG_CONFIG    = $(KBUILD_CONFIG)
> +export KCONFIG_CONFIG

IMO we should preserve the semantics of KCONFIG_CONFIG as much as
possible. make KCONFIG_CONFIG=blah works, but setting it in the
environment does not, because the '=' assignment take precendence.

Michal
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