libtool 1.4d and autoconf >= 2.53

[Artur Frysiak]

Hello
Acording to:
2001-10-08  Akim Demaille  <address@hidden>

        * lib/m4sugar/m4sugar.m4 (m4_provide_ifelse): Rename as...
        (m4_provide_if): this.
        * lib/m4sugar/m4sh.m4 (AS_REQUIRE): New.
        * lib/autoconf/general.m4 (AS_DEFUN, AC_DEFUN_ONCE, AC_BEFORE)
        (AC_REQUIRE, AC_PROVIDE, AC_PROVIDE_IFELSE): Be exact copy of the
        M4sugar peer, i.e., drop the `AC_PROVIDE_$1' broken marker.

from autoconf ChangeLog, libtool.m4 need change all
ifdef(AC_PROVIDE_MACRO_NAME, foo, bar)
to 
AC_PROVIDE_IFELSE([MACRO_NAME], [foo], [bar])
Without this change detecting dlopen() and win32 dll capability are
imposible.
Jakub Bogusz <address@hidden> make patch fixing this issue.
I attach this patch to this message.

Best regards.
-- 
Artur Frysiak
http://www.pld.org.pl/

libtool-ac253.patch
Description: Text document