Alien-automake MacOS issue.

config.log

configure:3089: checking whether autoconf is installed
configure:3095: autoconf --version
autoconf (GNU Autoconf) 2.71
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<https://gnu.org/licenses/gpl.html>, <https://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.
configure:3098: $? = 0
configure:3106: result: yes
configure:3113: checking whether autoconf works
configure:3121: cd conftest && autoconf -o /dev/null conftest.ac
unknown channel m4trace: -1- _m4_warn(syntax, AC_OUTPUT was never used, )
 at /Users/hrards/code/Alien-automake/local/lib/perl5/darwin-thread-multi-2level/auto/share/dist/Alien-autoconf/share/autoconf/Autom4te/Channels.pm line 631.
        Autom4te::Channels::msg("m4trace: -1- _m4_warn(syntax, AC_OUTPUT was never used, )\x{a}", undef, undef, "partial", 0) called at /Users/hrards/code/Alien-automake/local/lib/perl5/darwin-thread-multi-2level/auto/share/dist/Alien-autoconf/bin/autom4te line 1100
configure:3124: $? = 1
configure:3133: result: no
configure:3136: error: The installed version of autoconf does not work.
    Please check config.log for error messages before this one.

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