linux-kernel - Re: [RFC PATCH 4/7] kconfig: support new special property shell=

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Date:   Mon, 12 Feb 2018 17:53:05 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Ulf Magnusson <ulfalizer@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        "Luis R . Rodriguez" <mcgrof@...e.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Pavel Machek <pavel@....cz>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Jiri Kosina <jkosina@...e.cz>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        "Van De Ven, Arjan" <arjan.van.de.ven@...el.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [RFC PATCH 4/7] kconfig: support new special property shell=

On 02/12/2018 05:41 PM, Masahiro Yamada wrote:
> 2018-02-13 8:48 GMT+09:00 Randy Dunlap <rdunlap@...radead.org>:
>> On 02/12/2018 07:24 AM, Kees Cook wrote:
>>> On Mon, Feb 12, 2018 at 6:39 AM, Masahiro Yamada
>>> <yamada.masahiro@...ionext.com> wrote:
>>
>>>>> (And in thinking about this, does Kconfig know the true $CC in use?
>>>>> i.e. the configured cross compiler, etc?)
>>>>
>>>> I was thinking of removing CONFIG_CROSS_COMPILE.
>>>>
>>>> A user can dynamically change CROSS_COMPILE from
>>>> "make menuconfig".
>>>
>>> Most builds I've seen implement cross compilers as an environment
>>> variable during all "make" invocations.
>>
>> I agree. I think you would break a bunch of build bots if you remove that.
> 
> 
> For clarification, I suggested to remove CONFIG_CROSS_COMPILE.
> 
> The following code:
> https://github.com/torvalds/linux/blob/v4.16-rc1/Makefile#L315
> https://github.com/torvalds/linux/blob/v4.16-rc1/init/Kconfig#L58
> 
> I hope build bots are not using this.
> 
> 
> Passing CROSS_COMPILE via the command line, environment
> is still supported.

OK, I misunderstood.  That one can go away IMO.

thanks,
-- 
~Randy