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Date: Sat, 17 May 2008 07:40:37 -0700
From: Tim Kientzle <kientzle@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, Jeremie Le Hen <jeremie@le-hen.org>
Subject: Re: Debugging rtld
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>>I tried to compile my source tree with -fstack-protector-all, and it
>>happens that rtld breaks with this ...
> 
> I usually add the CFLAGS+=-g to the rtld-elf/Makefile. Also, you do not
> need to bring down the whole host by the broken ld.so.1. Do not install
> it at all, and specify the path to the rtld by the --dynamic-linker switch,
> see into ld.

If you do (accidentally?) break ld.so.1, remember that /rescue
is all statically linked and should still work.

Single-user boot to /rescue/sh is your friend.

Cheers,

Tim Kientzle