linux-kernel - Re: undefined reference to `_GLOBAL_OFFSET_TABLE

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Date:   Tue, 22 Aug 2017 09:59:57 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Nicholas Piggin <npiggin@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Simek <monstr@...str.eu>
Subject: Re: undefined reference to `_GLOBAL_OFFSET_TABLE_'

Hi Nick,

On Sun, Aug 20, 2017 at 01:36:37PM +1000, Nicholas Piggin wrote:
>On Sun, 20 Aug 2017 08:37:36 +0800
>kbuild test robot <fengguang.wu@...el.com> wrote:
>
>> Hi Nicholas,
>>
>> FYI, the error/warning still remains.
>
>Still same answer as before, i.e., it seems to be this toolchain bug:
>
>https://sourceware.org/bugzilla/show_bug.cgi?id=21017
>
>I've had no response from the microblaze maintainer, so please stop
>generating this warning now. If we get a bug report from a user who
>actually cares and will test toolchain fixes then we can easily work
>with them.

OK. I'll ignore this error for now. Sorry for the noise!

>Many thanks for the very good service this build system provides!

You are welcome. :)

Thanks,
Fengguang

>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head:   58d4e450a490d5f02183f6834c12550ba26d3b47
>> commit: 799c43415442414b1032580c47684cb709dfed6d kbuild: thin archives make default for all archs
>> date:   7 weeks ago
>> config: microblaze-allnoconfig (attached as .config)
>> compiler: microblaze-linux-gcc (GCC) 6.2.0
>> reproduce:
>>         wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         git checkout 799c43415442414b1032580c47684cb709dfed6d
>>         # save the attached .config to linux build tree
>>         make.cross ARCH=microblaze
>>
>> All errors (new ones prefixed by >>):
>>
>>    mm/slub.o: In function `__slab_free.isra.13':
>> >> (.text+0x1038): undefined reference to `_GLOBAL_OFFSET_TABLE_'
>>    scripts/link-vmlinux.sh: line 93: 48917 Segmentation fault      ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${objects}
>>
>> ---
>> 0-DAY kernel test infrastructure                Open Source Technology Center
>> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation