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Date:   Fri, 31 Aug 2018 18:42:01 +0900
From:   Masahiro Yamada <>
To:     Randy Dunlap <>
Cc:     Meelis Roos <>,
        Linux Kbuild mailing list <>,
        Linux Kernel list <>
Subject: Re: make *config regression: pkg-build


2018-08-20 0:37 GMT+09:00 Randy Dunlap <>:
> On 08/19/2018 04:15 AM, Meelis Roos wrote:
>> Just tried to run 'make menuconfig' on v4.18-10568-g08b5fa819970 and
>> found a bad surprise:
>> 'make *config' requires 'pkg-config'. Please install it.
>> make[1]: *** [scripts/kconfig/Makefile:219: scripts/kconfig/.mconf-cfg] Error 1
>> This is clearly a regression - I have libncurses devele pakcage
>> installed in the default system location (as do 99%+ on actuall
>> develeopers proobably) and in this case, pkg-config is useless.
>> pkg-config is needed only when libraries and headers are installed in
>> non-default locations but it is bad to require installation of
>> pkg-config on all the machines where make menuconfig would be possibly
>> run (for example, I have a aboult 100 machine kernel testbed with
>> self-hosted kernel compilation and machine-specific kernel
>> configurations that ocassionally need tweaking).
>> I notice 4.18 complained it can not find pkg-config but still worked.
>> This is clearly better than now.
>> If we want to support developers with libraries in non-default
>> locations, why not - but the common case of system include path should
>> work without any trouble or warnings. For exaple, test if compilation
>> against ncurses works, and if not retry it with pkg-config (and error
>> out if it does not give working result).
> Hi,
> This is due to my patch: 4ab3b80159d4db63b902ef635d4b5e882911b2da.
> Yamada-san, any ideas?  Feel free to just revert it.

Sorry for delay, I chose a partial revert
because I want to keep checking pkg-config for {g,x}config.

I posted a patch.

Best Regards
Masahiro Yamada

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