Re: [PATCH] uml: fix W=1 missing-include-dirs warnings

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On 4/14/21 11:52 PM, Masahiro Yamada wrote:
> On Thu, Apr 15, 2021 at 4:27 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>>
>> Currently when using "W=1" with UML builds, there are over 700 warnings
>> like so:
>>
>>   CC      arch/um/drivers/stderr_console.o
>> cc1: warning: ./arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
>>
>> but arch/um/ does not have include/uapi/ at all, so don't
>> include arch/um/include/uapi/ in USERINCLUDE for UML.


>> Option 4: simply mkdir arch/um/include/uapi
>>         That's what I did first, just as a test, and it works.
> 
> 
> I like Option 4.
> 
> But, you cannot do "mkdir -p arch/um/include/uapi" at build-time
> because the build system should not touch the source tree(, which
> might be read-only)
> for O= building.
> 
> How about adding
> 
>   arch/um/include/uapi/asm/Kbuild,
> 
> which is just having a SPDX one-liner?

Wow!  :)
That's what Al Viro suggested also.
I'll submit that patch later today (Thursday my time).

thanks.
-- 
~Randy




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