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Subject: Re: [RFC PATCH 4/7] kconfig: support new special property shell=
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From: Randy Dunlap <rdunlap@infradead.org>
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Date: Mon, 12 Feb 2018 17:53:05 -0800
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To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>, Ulf Magnusson <ulfalizer@gmail.com>, Linus Torvalds <torvalds@linux-foundation.org>, Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Andrew Morton <akpm@linux-foundation.org>, Nicolas Pitre <nicolas.pitre@linaro.org>, "Luis R . Rodriguez" <mcgrof@suse.com>, Sam Ravnborg <sam@ravnborg.org>, Michal Marek <michal.lkml@markovi.net>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Pavel Machek <pavel@ucw.cz>, linux-s390 <linux-s390@vger.kernel.org>, Jiri Kosina <jkosina@suse.cz>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Tejun Heo <tj@kernel.org>, Ingo Molnar <mingo@kernel.org>, "Van De Ven, Arjan" <arjan.van.de.ven@intel.com>, Arnd Bergmann <arnd@arndb.de>
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On 02/12/2018 05:41 PM, Masahiro Yamada wrote:
> 2018-02-13 8:48 GMT+09:00 Randy Dunlap <rdunlap@infradead.org>:
>> On 02/12/2018 07:24 AM, Kees Cook wrote:
>>> On Mon, Feb 12, 2018 at 6:39 AM, Masahiro Yamada
>>> <yamada.masahiro@socionext.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