linux-kernel - Re: um: WARNING: vmlinux: 'memcpy' exported twice. Previous export was in vmlinux

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Date:	Thu, 05 Mar 2009 19:27:31 +0200
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	Américo Wang <xiyou.wangcong@...il.com>
CC:	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: um: WARNING: vmlinux: 'memcpy' exported twice. Previous export
 was in vmlinux

Américo Wang wrote:
> On Thu, Mar 05, 2009 at 03:45:36PM +0200, Boaz Harrosh wrote:
>> Américo Wang wrote:
>>> On Thu, Mar 05, 2009 at 02:13:58PM +0200, Boaz Harrosh wrote:
>>>> On today's linus v2.6.29-rc7-3-g559595a
>>>>
>>>> Doing make ARCH=um defconfig & make ARCH=um
>>>> give's me:
>>>>
>>>> LD vmlinux.o
>>>> MODPOST vmlinux.o
>>>> WARNING: vmlinux: 'memcpy' exported twice. Previous export was in vmlinux
>>>>
>>>>
>>>> Sorry if this is a duplicate report
>>>>
>>> Weird...
>>> I tried to compile like what you said, I can't reproduce it.
>>>
>>> Which gcc are you using?
>>>
>>> Thanks.
>>>
>> $ gcc --version
>> gcc (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
>>
>> I'm running on an x86_64 Fedora10 system (updated recently)
>> $ uname -o -s -r -m -p -i
>> Linux 2.6.27.15-170.2.24.fc10.x86_64 x86_64 x86_64 x86_64 GNU/Linux
>>
> 
> I am using the same thing, but on i386. I still can't reproduce it. :(
> 

What can I say I just did it again from scratch

$ mkdir .build_um
$ make ARCH=um KBUILD_OUTPUT=.build_um defconfig
$ make ARCH=um KBUILD_OUTPUT=.build_um

(I'm using KBUILD_OUTPUT= because O= does not work when also using M= with
 external modules, so it's a habit)

Thanks for your help. I will try to bisect it on Sunday
Boaz
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