Re: [PATCH 1/4] kbuild: introduce KBUILD_CONFIG; unexpose KCONFIG_CONFIG

From: Michal Marek
Date: Fri Sep 16 2011 - 08:33:48 EST


On 16.9.2011 14:31, Michal Marek wrote:
> 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@xxxxxxxxx>
>> ---
>> 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.

Also, please mention KBUILD_CONFIG variable in
Documentation/kbuild/kconfig.txt. Or maybe
Documentation/kbuild/kbuild.txt, I'm not sure what is the best fit now.

Michal
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