tweaks for autoconf 2.50

[Geoff Keating]

> Date: Fri, 25 May 2001 11:43:42 -0700
> From: "Zack Weinberg" <zackw@Stanford.EDU>
> Cc: gcc-patches@gcc.gnu.org

> On Fri, May 25, 2001 at 11:37:06AM -0700, Geoff Keating wrote:

> I think you misunderstood.  Any configure script that uses libtool's
> autoconf macros will barf.  F'r instance, libstdc++v3:
> 
> configure.in:50: error: All the tests involving linking were disabled by AC_NO_EXECUTABLES
> acgeneral.m4:2882: AC_TRY_LINK is expanded from...
> ../libtool.m4:208: AC_LIBTOOL_SETUP is expanded from...
> configure.in:50: AC_LIBTOOL_SETUP is required by...
> ../libtool.m4:86: _AC_PROG_LIBTOOL is expanded from...
> configure.in:50: _AC_PROG_LIBTOOL is required by...
> ../libtool.m4:52: AC_PROG_LIBTOOL is expanded from...
> ../libtool.m4:839: AM_PROG_LIBTOOL is expanded from...
> configure.in:50: the top level
> 
> Doesn't matter if it was otherwise cross-compiler clean.

Hmmm.  Sounds like libtool will need some fixing, then.  It probably
only works now by chance.

-- 
- Geoffrey Keating <geoffk@geoffk.org>