linux-kernel - Re: linux-next: Tree for Jan 14 (lowpan, 802.15.4)

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Date:	Fri, 17 Jan 2014 10:49:59 -0800
From:	Randy Dunlap <rdunlap@...radead.org>
To:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Marcel Holtmann <marcel@...tmann.org>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-zigbee-devel <linux-zigbee-devel@...ts.sourceforge.net>,
	Alexander Smirnov <alex.bluesman.smirnov@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Jukka Rissanen <jukka.rissanen@...ux.intel.com>
Subject: Re: linux-next: Tree for Jan 14 (lowpan, 802.15.4)

On 01/14/2014 02:54 PM, Dmitry Eremin-Solenikov wrote:
> Hello,
> 
> 
> On Tue, Jan 14, 2014 at 9:49 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
>>
>> On 01/13/2014 09:51 PM, Stephen Rothwell wrote:
>>> Hi all,
>>>
>>> This tree fails (more than usual) the powerpc allyesconfig build.
>>>
>>> Changes since 20140113:
>>>
>>
>>
>> on i386:
>>
>> net/built-in.o: In function `header_create':
>> 6lowpan.c:(.text+0x166149): undefined reference to `lowpan_header_compress'
>> net/built-in.o: In function `bt_6lowpan_recv':
>> (.text+0x166b3c): undefined reference to `lowpan_process_data'
> 
> Ah, nice Makefile hack there.
> David, Marcel, could you please consider the attached patch.
> 
> 

Hi,
I guess that the Makefile hack is still causing problems.
With today's linux-next (20140117), I see these build errors (or warnings
in the case of loadable modules):


when 802.15.4 and Bluetooth are built as loadable modules:

WARNING: net/ieee802154/6lowpan_iphc: 'lowpan_header_compress' exported twice. Previous export was in net/bluetooth/bluetooth.ko
WARNING: net/ieee802154/6lowpan_iphc: 'lowpan_process_data' exported twice. Previous export was in net/bluetooth/bluetooth.ko

when they are builtin to the kernel image:

net/ieee802154/built-in.o: In function `lowpan_header_compress':
(.text+0x3d00): multiple definition of `lowpan_header_compress'
net/bluetooth/built-in.o:(.text+0x2e8f0): first defined here
net/ieee802154/built-in.o: In function `lowpan_process_data':
(.text+0x3230): multiple definition of `lowpan_process_data'
net/bluetooth/built-in.o:(.text+0x2de20): first defined here


-- 
~Randy
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