linux-kernel - Re: Problems using EXPORT_SYMBOL with lib/flex

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Message-ID: <20101201161927.GC9337@hack>
Date:	Thu, 2 Dec 2010 00:19:27 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Alex Bennee <kernel-hacker@...nee.com>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Problems using EXPORT_SYMBOL with lib/flex_array

On Wed, Dec 01, 2010 at 01:20:30PM +0000, Alex Bennee wrote:
>On 1 December 2010 12:05, Alex Bennee <kernel-hacker@...nee.com> wrote:
>> Hi,
>>
>> I want to be able to use the flex_array functions in my module so I
>> wanted to EXPORT_SYMBOL the API.
>> <snip>
>> Am I being a
>> little dim or is there some other magic foo that needs doing to add an
>> export to a library function?
>
>It turns out for library code there is. If the .o is only included in
>the lib-y section then it will never get scanned for exported kernel
>symbols. Tweaking the lib/Makefile so obj-y included flex_array.o did
>the trick.
>
>I'm unsure if this behaviour is what is wanted?
>

Yes, but not sure about flex_array.o.
Which functions in flex_array.c do you need in your module anyway?

-- 
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