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From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] kbuild,tegra124: add dummy obj- for Kbuild
Date: Wed, 19 Feb 2014 13:44:43 -0700	[thread overview]
Message-ID: <530517BB.4070506@wwwdotorg.org> (raw)
In-Reply-To: <20140219204047.GF19081@bill-the-cat>

On 02/19/2014 01:40 PM, Tom Rini wrote:
> On Wed, Feb 19, 2014 at 09:36:14AM -0700, Stephen Warren 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?
>>
>> Adding something to obj-, which presumably isn't used at all, seems very
>> odd.
> 
> Why do we even need arch/arm/cpu/armv7/tegra124/Makefile ?  I assume we
> need the config.mk because we can't stick CONFIG_ARCH_DEVICE_TREE into
> the config header?

At least with the current build system, if I delete it, the build fails:

> + make BUILD_DIR=/home/swarren/shared/git_wa/tegra-uboot-flasher/_build/venice2/u-boot -s -j9
> /home/swarren/shared/git_wa/tegra-uboot-flasher/u-boot/scripts/Makefile.build:11: Makefile: No such file or directory
> make[1]: *** No rule to make target `Makefile'.  Stop.
> make: *** [/home/swarren/shared/git_wa/tegra-uboot-flasher/_build/venice2/u-boot/arch/arm/cpu/armv7/tegra124/built-in.o] Error 2

  reply	other threads:[~2014-02-19 20:44 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-19 13:26 [U-Boot] [PATCH] kbuild,tegra124: add dummy obj- for Kbuild Masahiro Yamada
2014-02-19 14:46 ` Albert ARIBAUD
2014-02-19 16:36   ` Stephen Warren
2014-02-19 20:40     ` Tom Rini
2014-02-19 20:44       ` Stephen Warren [this message]
2014-02-20  8:35         ` Masahiro Yamada
2014-02-20  8:24     ` Masahiro Yamada
2014-02-20 16:15       ` Stephen Warren
2014-02-21 11:45         ` Masahiro Yamada
2014-02-21 16:33           ` Stephen Warren
2014-02-20  8:23   ` Masahiro Yamada
2014-02-20  9:06     ` Albert ARIBAUD
2014-02-19 20:51 ` Tom Rini
2014-02-20  8:22   ` Masahiro Yamada
2014-02-20 13:25     ` Tom Rini
2014-02-19 21:12 ` Tom Rini

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