linux-kernel - Re: arch/sh/kernel/cpu/sh2/clock-sh7619.o:undefined reference to `followparent

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Date:   Sun, 21 Apr 2019 08:24:21 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc:     kbuild test robot <lkp@...el.com>, kbuild-all@...org,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        paul.mundt@...il.com, Rich Felker <dalias@...c.org>,
        Linux-sh list <linux-sh@...r.kernel.org>
Subject: Re: arch/sh/kernel/cpu/sh2/clock-sh7619.o:undefined reference to
 `followparent_recalc'

On 4/21/19 6:52 AM, Yoshinori Sato wrote:
> On Sun, 21 Apr 2019 04:34:36 +0900,
> Randy Dunlap wrote:
>>
>> On 4/20/19 12:40 AM, kbuild test robot wrote:
>>> Hi Randy,
>>>
>>> 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:   371dd432ab39f7bc55d6ec77d63b430285627e04
>>> commit: acaf892ecbf5be7710ae05a61fd43c668f68ad95 sh: fix multiple function definition build errors
>>> date:   2 weeks ago
>>> config: sh-allmodconfig (attached as .config)
>>> compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
>>> reproduce:
>>>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>>         chmod +x ~/bin/make.cross
>>>         git checkout acaf892ecbf5be7710ae05a61fd43c668f68ad95
>>>         # save the attached .config to linux build tree
>>>         GCC_VERSION=7.2.0 make.cross ARCH=sh 
>>
>> Hi,
>>
>> Once again, the question is the validity of the SH2 .config file in this case
>> (that was attached).
>>
>> I don't believe that it is valid because CONFIG_SH_DEVICE_TREE=y,
>> which selects COMMON_CLK, and there is no followparent_recalc() in the
>> COMMON_CLK API.
>>
>> Also, while CONFIG_HAVE_CLK=y, drivers/sh/Makefile prevents that from
>> building clk/core.c, which could provide followparent_recalc():
>>
>> ifneq ($(CONFIG_COMMON_CLK),y)
>> obj-$(CONFIG_HAVE_CLK)			+= clk/
>> endif
>>
>> Hm, maybe that's where the problem is.  I'll look into that more.
>>
> 
> Yes.
> Selected target (CONFIG_SH_7619_SOLUTION_ENGINE) is non devicetree
> and used superh specific clk modules.
> So allyesconfig output is incorrect.
> 
> I fixed Kconfig to output the correct config.

Thanks for that.
The patch fixes this problem in my builds.

However, now I see these build errors:

ERROR: "__ashiftrt_r4_28" [fs/udf/udf.ko] undefined!
ERROR: "__ashiftrt_r4_26" [drivers/rtc/rtc-x1205.ko] undefined!
ERROR: "__ashiftrt_r4_25" [drivers/rtc/rtc-pcf2123.ko] undefined!
ERROR: "__ashiftrt_r4_28" [drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.ko] undefined!
ERROR: "__ashiftrt_r4_25" [drivers/input/tablet/gtco.ko] undefined!
ERROR: "__ashiftrt_r4_26" [drivers/input/mouse/psmouse.ko] undefined!
ERROR: "__ashiftrt_r4_28" [drivers/input/mouse/psmouse.ko] undefined!
ERROR: "__ashiftrt_r4_25" [drivers/iio/pressure/bmp280.ko] undefined!
ERROR: "__ashiftrt_r4_26" [drivers/iio/dac/ad5764.ko] undefined!
ERROR: "__ashiftrt_r4_26" [drivers/iio/accel/mma7660.ko] undefined!
ERROR: "__ashiftrt_r4_25" [drivers/iio/accel/dmard06.ko] undefined!
ERROR: "__ashiftrt_r4_26" [drivers/iio/accel/bma220_spi.ko] undefined!
ERROR: "__ashiftrt_r4_25" [drivers/crypto/hisilicon/sec/hisi_sec.ko] undefined!

Is this just a toolchain problem?

I am using the gcc 8.1.0 tools from
https://mirrors.edge.kernel.org/pub/tools/crosstool/


thanks.
-- 
~Randy