Subject: Re: [PATCH] fixed: CRC32=y && 8193TOO=m unresolved symbols
From: David Woodhouse <dwmw2@infradead.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Stewart Smith <stewartsmith@mac.com>,
       Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org,
       Stewart Smith <stewart@linux.org.au>
In-Reply-To: <20030604152806.GE19929@gtf.org>
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	 <3D3CD66D-9651-11D7-A060-00039346F142@mac.com>
	 <20030604152806.GE19929@gtf.org>
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Date: Wed, 04 Jun 2003 16:30:49 +0100
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On Wed, 2003-06-04 at 16:28, Jeff Garzik wrote:

> You can't EXPORT_SYMBOL from a header.
> 
> This sounds like Kconfig or Makefile bugs to me... all the
> export-symbol stuff should already be in place.
> 
> Can you post your .config and the exact build errors you are getting?

It's because lib/crc32.o isn't actually _referenced_ by anything, hence
isn't actually pulled into vmlinux from lib/lib.a.

My fix in the 2.4 tree is to export its symbols from kernel/ksyms.c
#ifdef CONFIG_CRC32, and to export its symbols from lib/crc32.c 
#ifndef CONFIG_CRC32.

-- 
dwmw2

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