Re: strange build failure when kconfig symbol is bool but not when tristate

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Hi,

On Sat, Oct 15, 2011 at 1:52 AM, Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote:
> On 10/14/2011 10:39 PM, Arnaud Lacombe wrote:
>> Hi,
>>
>> On Fri, Oct 14, 2011 at 6:31 PM, Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote:
>>> (my turn)
>>>
>>> I have seen this randconfig build error 2-3 times in the past 3 months:
>>> (this one is from linux-next of 20111014.)
>>>
>>> net/built-in.o: In function `unregister_8022_client':
>>> (.text+0x26157): undefined reference to `llc_sap_close'
>>> net/built-in.o: In function `register_8022_client':
>>> (.text+0x261b6): undefined reference to `llc_sap_open'
>>> net/built-in.o: In function `p8022_request':
>>> p8022.c:(.text+0x261e5): undefined reference to `llc_build_and_send_ui_pkt'
>>> net/built-in.o: In function `snap_request':
>>> psnap.c:(.text+0x26487): undefined reference to `llc_build_and_send_ui_pkt'
>>> net/built-in.o: In function `snap_init':
>>> psnap.c:(.init.text+0xb22): undefined reference to `llc_sap_open'
>>> net/built-in.o: In function `snap_exit':
>>> psnap.c:(.exit.text+0x16): undefined reference to `llc_sap_close'
>>>
>>> I finally found that if I change drivers/net/tokenring/Kconfig
>>> symbol TR from bool to tristate, the build completes successfully,
>>> but I don't understand why this is happening.
>>>
>> There was something like this not too long ago, does this:
>>
>> https://github.com/lacombar/linux-2.6/tree/master/kconfig/expr-woes
>>
>> helps ?
>
> Am I supposed to use that full kernel tree?
> Can I just get a patch to test?
>
You can merge that with whatever kernel tree. Sending the proper patch
has been on my TODO for a while

 - Arnaud

>> Thanks,
>>  - Arnaud
>>
>>>
>>> ---
>>>  drivers/net/tokenring/Kconfig |    2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> --- next-2011-1014.orig/drivers/net/tokenring/Kconfig
>>> +++ next-2011-1014/drivers/net/tokenring/Kconfig
>>> @@ -4,7 +4,7 @@
>>>
>>>  # So far, we only have PCI, ISA, and MCA token ring devices
>>>  menuconfig TR
>>> -       bool "Token Ring driver support"
>>> +       tristate "Token Ring driver support"
>>>        depends on NETDEVICES && !UML
>>>        depends on (PCI || ISA || MCA || CCW || PCMCIA)
>>>        select LLC
>>>
>>>> make oldconfig
>>>
>>>> diff -u .config.old .config
>>> --- .config.old 2011-10-14 15:17:45.000000000 -0700
>>> +++ .config     2011-10-14 15:24:45.000000000 -0700
>>> @@ -876,7 +876,7 @@
>>>  # CONFIG_MDIO_BITBANG is not set
>>>  # CONFIG_PPP is not set
>>>  # CONFIG_SLIP is not set
>>> -CONFIG_TR=y
>>> +CONFIG_TR=m
>>>  CONFIG_PCMCIA_IBMTR=m
>>>
>>>
>>> voila.  build works cleanly.
>>>
>>> ideas?
>>>
>>> thanks,
>>> --
>>> ~Randy
>
>
> --
> ~Randy
> *** Remember to use Documentation/SubmitChecklist when testing your code ***
>
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