Changes in autoconf releases

[PLG]

I'm on Mac (Lion) and I get the following...

http://www.flameeyes.eu/autotools-mythbuster/forwardporting/autoconf.html See 1.2. autoconf 2.68

recursive-loop:codepoint.the-b.org 01oC$ aclocal
configure.in:538: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
../../lib/autoconf/general.m4:2729: _AC_RUN_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
../../lib/autoconf/general.m4:2748: AC_RUN_IFELSE is expanded from...
configure.in:538: the top level

recursive-loop:codepoint.the-b.org 01oC$ autoconf --version
autoconf (GNU Autoconf) 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by David J. MacKenzie and Akim Demaille.

as a workaround, I downgraded my autoconf to 2.64... then it works fine.

[PLG]

http://lists.gnu.org/archive/html/bug-autoconf/2011-04/msg00015.html

configure.in:538
    AC_RUN_IFELSE([AC_LANG_PROGRAM([[# include <pcre.h>]],
        [[  int have_utf8, have_props;

            pcre_config(PCRE_CONFIG_UTF8, &have_utf8);
            pcre_config(PCRE_CONFIG_UNICODE_PROPERTIES, &have_props);

            return (have_utf8 && have_props) ? 0 : 1;
        ]])],