bi-arch detection fix

[Bruno Haible]

The detection whether a 64-bit or 32-bit build is in use does not work right on
openSUSE 11.0. The reason is that "gcc -m32 -print-search-dirs" contains a
path element
  /usr/lib64/gcc/x86_64-suse-linux/4.3/../../../
which is the same as
  /usr/lib64/


2009-04-26  Bruno Haible  <address@hidden>

        Make the lib vs. lib64 recognition work on openSUSE 11 with "gcc -m32".
        * m4/lib-prefix.m4 (AC_LIB_PREPARE_MULTILIB): Ignore paths that end in
        "../" or "..".

--- m4/lib-prefix.m4.orig       2009-04-26 18:54:07.000000000 +0200
+++ m4/lib-prefix.m4    2009-04-26 18:52:42.000000000 +0200
@@ -1,5 +1,5 @@
-# lib-prefix.m4 serial 6 (gettext-0.18)
-dnl Copyright (C) 2001-2005, 2008 Free Software Foundation, Inc.
+# lib-prefix.m4 serial 7 (gettext-0.18)
+dnl Copyright (C) 2001-2005, 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -206,6 +206,9 @@
           if test -d "$searchdir"; then
             case "$searchdir" in
               */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
+              */../ | */.. )
+                # Better ignore directories of this form. They are misleading.
+                ;;
               *) searchdir=`cd "$searchdir" && pwd`
                  case "$searchdir" in
                    */lib64 ) acl_libdirstem=lib64 ;;