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Subject: Re: 2.6.17-mm5 -- Busted toolchain? -- usr/klibc/exec_l.c:59:
	undefined reference to `__stack_chk_fail'
From: Arjan van de Ven <arjan@infradead.org>
To: Miles Lane <miles.lane@gmail.com>
Cc: Andrew Morton <akpm@osdl.org>, LKML <linux-kernel@vger.kernel.org>
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Date: Sat, 01 Jul 2006 23:17:53 +0200
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On Sat, 2006-07-01 at 14:09 -0700, Miles Lane wrote:
> I am getting this:
> 
>   KLIBCLD usr/klibc/libc.so
> usr/klibc/execl.o: In function `execl':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execle.o: In function `execle':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execvpe.o: In function `execvpe':
> usr/klibc/execvpe.c:75: undefined reference to `__stack_chk_fail'
> usr/klibc/execlp.o: In function `execlp':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execlpe.o: In function `execlpe':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/vfprintf.o:usr/klibc/vfprintf.c:26: more undefined
> references to `__stack_chk_fail' follow
> make[2]: *** [usr/klibc/libc.so] Error 1
> 
> But I've searched all the .h and .c files in the tree and found no
> reference to __stack_chk_fail.  I am running Ubuntu's Edgy Eft (the
> latest development tree).

somehow you're getting -fstack-protector added to your CFLAGs.. which
won't do you any good unless you link to glibc or another library that
implements the user side of the feature...