From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Warren <swarren@wwwdotorg.org>
Date: Thu, 20 Feb 2014 09:15:21 -0700
Subject: [U-Boot] [PATCH] kbuild,tegra124: add dummy obj- for Kbuild
In-Reply-To: <20140220172429.A188.AA925319@jp.panasonic.com>
References: <20140219154659.5f1ba763@lilith> <5304DD7E.7070104@wwwdotorg.org>
	<20140220172429.A188.AA925319@jp.panasonic.com>
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On 02/20/2014 01:24 AM, Masahiro Yamada wrote:
> Hello Stephen,
> 
> 
> On Wed, 19 Feb 2014 09:36:14 -0700
> Stephen Warren <swarren@wwwdotorg.org> wrote:
> 
>> On 02/19/2014 07:46 AM, Albert ARIBAUD wrote:
>>> Hi Masahiro,
>>>
>>> On Wed, 19 Feb 2014 22:26:43 +0900, Masahiro Yamada
>>> <yamada.m@jp.panasonic.com> wrote:
>>>
>>>> In Kbuild, every makefile must have non-empty obj- or obj-y.
>>>> Otherwise, built-in.o will not be created and the link stage
>>>> will fail.
>> ...
>>>> diff --git a/arch/arm/cpu/armv7/tegra124/Makefile b/arch/arm/cpu/armv7/tegra124/Makefile
>> ...
>>>> +# necessary to create built-in.o
>>>> +obj- := __dummy__.o
>>
>> obj- or obj-y?
> 
> Definitely obj-.

Really? Why would such a variable even exist or be used. Only obj-n or
obj-y should exist; "" isn't a valid y/n value.