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Message-ID: <20110504125359.GM277@brightrain.aerifal.cx>
Date: Wed, 4 May 2011 08:53:59 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: using musl with older gcc
On Wed, May 04, 2011 at 07:18:09AM +0200, Szabolcs Nagy wrote:
> i've just tried out musl
>
> the install instruction says
>
> "It requires a version of gcc with the -wrapper option
> (gcc 4.x should work)."
>
> i have 4.3.x and it does not have -wrapper
> (it seems 4.4.x has though, you should fix the instructions)
You're right. Either this should be fixed, or I should finish the new
version of the wrapper that works with older gcc versions.
> __stdout_write.c:(.text+0x55): undefined reference to `__stack_chk_fail'
>
> if i create a dummy __stack_chk_fail function
> then the resulting executable segfaults
>
> this is some newer stackprotection thing
> maybe i just have to link some additional
> lib to make this error go away
>
> in the end i recompiled musl with
> CFLAGS += -fno-stack-protector
> and now everything works fine
Yes, some vendors have patched the gcc to make this option default...
I will add a note about that.
Thanks!
Rich
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