Re: [PATCH v2] kbuild: skip install/check of headers right under uapi directories

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2017-05-16 16:40 GMT+09:00 Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>:
> Le 16/05/2017 à 07:15, Masahiro Yamada a écrit :
>> Since commit 61562f981e92 ("uapi: export all arch specifics
>> directories"), "make INSTALL_HDR_PATH=$root/usr headers_install"
>> deletes standard glibc headers and others in $root/usr/include.
>>
>> The cause of the issue is that headers_install now starts descending
>> from arch/$(hdr-arch)/include/uapi with $root/usr/include for its
>> destination when installing asm headers.  So, headers already there
>> are assumed to be unwanted.
>>
>> When headers_install starts descending from include/uapi with
>> $root/usr/include for its destination, it works around the problem
>> by creating an dummy destination $root/usr/include/uapi, but this
>> is tricky.
>>
>> To fix the problem in a clean way is to skip headers install/check
>> in include/uapi or arch/$(hdr-arch)/include/uapi because we know
>> there are only sub-directories in uapi directories.  A good side
>> effect is the empty destination $root/usr/include/uapi will go
>> away.
>>
>> I am also removing the trailing slash in the headers_check target to
>> skip checking in arch/$(hdr-arch)/include/uapi.
>>
>> Fixes: 61562f981e92 ("uapi: export all arch specifics directories")
>> Reported-by: Dan Williams <dan.j.williams@xxxxxxxxx>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> Thank you for the patch.
>
> Acked-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>


Applied to linux-kbuild/fixes.



-- 
Best Regards
Masahiro Yamada
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