linux-kernel - Re: [PATCH 2/3] x86: apuv2: fix input dependencies

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Message-ID: <82c978b2-e9c4-e178-e4b7-621729c2cee4@metux.net>
Date:   Thu, 7 Mar 2019 01:10:13 +0100
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Linus Walleij <linusw@...nel.org>,
        Enrico Weigelt <info@...ux.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 2/3] x86: apuv2: fix input dependencies

On 05.03.19 14:56, Andy Shevchenko wrote:
> 
> Darren gave a talk about merging kernel configs to get something like
> you want to.
> This tool is quite long already lying around. merge_config.sh in your
> kernel source tree.

Yes, that's similar to how some distros (eg. yocto) do it.

But my requirements are a bit more complex:

In my final meta-config, I just wanna say:

* i have board A (possibly multiple boards)
* i need features X, Y, Z (eg. eth, display, can, ext4, acl, ...)

And that shall be all to generate a minimal config for exactly those
requirements.

Doing that by just putting config snippets together, quickly turns into
a maintenance hell. At least you'd need recursive dependencies and some
if/else logic.

That's why I've written kmct:

https://github.com/metux/kmct

--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287