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undefined reference to `printk'

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Hi Peter,

It's probably a bug fix that unveils the link errors.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d0acc7dfd90eb97e90ccd42a567034017ec60fb8
commit: 63a3f603413ffe82ad775f2d62a5afff87fd94a0 timeconst.pl: Eliminate Perl warning
date:   3 years, 7 months ago
config: m32r-allnoconfig (attached as .config)
compiler: m32r-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 63a3f603413ffe82ad775f2d62a5afff87fd94a0
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All errors (new ones prefixed by >>):

   arch/m32r/kernel/built-in.o: In function `default_eit_handler':
>> (.text+0x51c): undefined reference to `printk'
   arch/m32r/kernel/built-in.o: In function `default_eit_handler':
   (.text+0x51c): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `printk'

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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undefined reference to `printk' kbuild test robot <fengguang.wu@intel.com> - 2016-09-10 19:20 +0200
  Re: [m32r] undefined reference to `printk' Fengguang Wu <fengguang.wu@intel.com> - 2016-09-11 03:20 +0200
    Re: [m32r] undefined reference to `printk' Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2016-09-19 01:00 +0200

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