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Date:   Tue, 15 Sep 2020 07:42:38 +0200
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Subject: Re: [question] KBUILD_OUTPUT and modules install (with INSTALL_MOD_PATH)
To:     Masahiro Yamada <masahiroy@kernel.org>
CC:     Michal Marek <michal.lkml@markovi.net>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
From:   Frank Wunderlich <frank-w@public-files.de>
Message-ID: <27B16959-58F6-4190-8A65-88FFD2A49452@public-files.de>
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Am 15=2E September 2020 04:56:55 MESZ schrieb Masahiro Yamada <masahiroy@ke=
rnel=2Eorg>:
>On Tue, Sep 15, 2020 at 2:57 AM Frank Wunderlich

>> i try to use modules_install target after building kernel with
>KBUILD_OUTPUT set
>>
>> KBUILD_OUTPUT: /media/data_nvme/git/kernel/build #kernel source is in
>/media/data_nvme/git/kernel/BPI-R2-4=2E14
>>
>> kernel is build successfully, but i fail on running the make
>modules_install target
>>
>>   ERROR: Kernel configuration is invalid=2E
>>          include/generated/autoconf=2Eh or include/config/auto=2Econf a=
re
>missing=2E
>>          Run 'make oldconfig && make prepare' on kernel src to fix
>it=2E
>>
>> Makefile:648: include/config/auto=2Econf: No such file or directory
>> make: *** [Makefile:719: include/config/auto=2Econf] Error 1
>>
>> it looks it is ignoring the KBUILD_OUTPUT variable, as both files are
>present
>
>
>KBUILD_OUTPUT is an environment variable=2E
>
>Did you set (export) it
>before doing 'make modules_install'?

Yes i exported it before use at beginning of my script [1] and modules_ins=
tall used inside install function [2]=2E It works with build-function [3]=
=2E
As the script is big i linked the relevant parts=2E=2E=2Ei checked KBUILD_=
OUTPUT at beginning of install function so i'm sure it was set

>> $ ls /media/data_nvme/git/kernel/build/include/config/auto=2Econf
>> /media/data_nvme/git/kernel/build/include/config/auto=2Econf
>> $ ls /media/data_nvme/git/kernel/build/include/generated/autoconf=2Eh
>> /media/data_nvme/git/kernel/build/include/generated/autoconf=2Eh


[1] https://github=2Ecom/frank-w/BPI-R2-4=2E14/blob/5=2E9-rc/build=2Esh#L7=
5
[2] https://github=2Ecom/frank-w/BPI-R2-4=2E14/blob/5=2E9-rc/build=2Esh#L3=
68
[3] https://github=2Ecom/frank-w/BPI-R2-4=2E14/blob/5=2E9-rc/build=2Esh#L5=
78
regards Frank