linux-kernel - Re: m68k: main.c:(.init.text+0x730): undefined reference to `strlen'

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Message-ID: <20080514141056.GB19909@cs181133002.pp.htv.fi>
Date:	Wed, 14 May 2008 17:10:56 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Andreas Schwab <schwab@...e.de>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Linux/m68k <linux-m68k@...r.kernel.org>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: m68k: main.c:(.init.text+0x730): undefined reference to
	`strlen'

On Wed, May 14, 2008 at 10:37:57AM +0200, Andreas Schwab wrote:
> Geert Uytterhoeven <geert@...ux-m68k.org> writes:
> 
> > My first guess is gcc is turning sizeof() into strlen() again.
> 
> Definitely not.  sizeof is a compile-time constant, strlen is not.  More
> likely the strlen call is embedded in the expansion of strncat.

m68k is one of the architectures not using -ffreestanding, so this 
kind of problems is somehow expected...

We could add -ffreestanding on m68k.

Or replace all the strlen stuff in include/asm-m68k/string.h with a 
function prototype, which lets gcc choose itself whether it wants to use 
the builtin or the version from lib/string.c, and makes an out-of-line 
version of the function available for caes like the one we face here.

> Andreas.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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