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From: Andreas Schwab <schwab@linux-m68k.org>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: "H.J. Lu" <hjl.tools@gmail.com>,  gdb-patches@sourceware.org
Subject: Re: [patch] Smaller gdb: -rdynamic -> -Wl,--dynamic-list
References: <20100513131840.GA31032@host0.dyn.jankratochvil.net>	<AANLkTin4ZlIvdh7BXyfsuBj9oBmCJpHEYwhxukRqaVYu@mail.gmail.com>	<20100516180828.GA6448@host0.dyn.jankratochvil.net>
X-Yow: I guess it was all a DREAM..  or an episode of HAWAII FIVE-O...
Date: Sun, 13 Jun 2010 19:58:00 -0000
In-Reply-To: <20100516180828.GA6448@host0.dyn.jankratochvil.net> (Jan	Kratochvil's message of "Sun, 16 May 2010 20:08:28 +0200")
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Jan Kratochvil <jan.kratochvil@redhat.com> writes:

> --- a/gdb/configure.ac
> +++ b/gdb/configure.ac
> @@ -1312,6 +1312,30 @@ dnl Note that we only want this if we are both native (host == target),
>  dnl and not doing a canadian cross build (build == host).
>  
>  if test ${build} = ${host} -a ${host} = ${target} ; then
> +   if test "$GCC" = "yes" ; then
> +      # The dynamically loaded libthread_db needs access to symbols in the gdb
> +      # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
> +      # may not be supported there.
> +      AC_MSG_CHECKING(for the dynamic export flag)

Why only for non-canadian-cross builds?  Previously -rdynamic was used
for any native configuration, now you can no longer cross-build a
working gdb.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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"And now for something completely different."