Hi,

[auto build test ERROR on gpio/for-next]
[also build test ERROR on v4.7-rc3 next-20160609]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Andrew-F-Davis/gpio-Only-descend-into-gpio-directory-when-CONFIG_GPIOLIB-is-set/20160614-061705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
config: m32r-m32104ut_defconfig (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
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All errors (new ones prefixed by >>):

quoted

ERROR: "__i2c_board_list" [drivers/i2c/i2c-core.ko] undefined!
ERROR: "__i2c_board_lock" [drivers/i2c/i2c-core.ko] undefined!
ERROR: "__i2c_first_dynamic_bus_num" [drivers/i2c/i2c-core.ko] undefined!

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