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SubjectRe: kbuild: ARCH=um archheaders failed
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On 08/03/2018 07:23 PM, Masahiro Yamada wrote:
> 2018-08-04 0:41 GMT+09:00 Randy Dunlap <rdunlap@infradead.org>:
>> On 08/02/2018 05:13 PM, Randy Dunlap wrote:
>>> Hi Yamada-san,
>>>
>>> I see this every few weeks. It's not reproducible (it depends
>>> on the moon, Mars, etc.).
>>>
>>> I'm using O=builddir. The build log is short (below).
>>>
>>> Do you see a makefile problem here? (nothing to do with mmotm;
>>> I see it more frequently with linux-next since I do many daily
>>> builds with it)
>>
>> BTW, this is just um defconfig with -j4.
>>
>> --
>> ~Randy
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in
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>
>
>
> I will send a patch with commit description later
> after more testing,
> but the following patch should fix the issue.
>
>
> diff --git a/arch/um/Makefile b/arch/um/Makefile
> index d3975e7..1cec053 100644
> --- a/arch/um/Makefile
> +++ b/arch/um/Makefile
> @@ -120,7 +120,7 @@ archheaders:
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
> kbuild-file=$(HOST_DIR)/include/uapi/asm/Kbuild \
> obj=$(HOST_DIR)/include/generated/uapi/asm
> - $(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders
> + $(Q)$(MAKE) -f $(srctree)/Makefile ARCH=$(HEADER_ARCH) archheaders
>
>
> archprepare: include/generated/user_constants.h
>
>
>

I tested this patch and it works. :)
but then it's difficult to reproduce the problem.

Thanks!
--
~Randy

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