+# SPDX-FileCopyrightText: 2020 Michael Jeanson <mjeanson@efficios.com>
+# SPDX-FileCopyrightText: 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later WITH LicenseRef-Autoconf-exception-macro
#
# SYNOPSIS
#
# NOTE: AE_FEATURE_ENABLE/DISABLE() must be placed first of the relative
# AE_FEATURE() macro if you want the the proper ACTION-IF-ENABLED and
# ACTION-IF-NOT-ENABLED to run.
-#
-# LICENSE
-#
-# Copyright (c) 2020 Michael Jeanson <mjeanson@efficios.com>
-# Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
-#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 2 of the License, or (at your
-# option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-# Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <https://www.gnu.org/licenses/>.
-#
-# As a special exception, the respective Autoconf Macro's copyright owner
-# gives unlimited permission to copy, distribute and modify the configure
-# scripts that are the output of Autoconf when processing the Macro. You
-# need not follow the terms of the GNU General Public License when using
-# or distributing such scripts, even though portions of the text of the
-# Macro appear in them. The GNU General Public License (GPL) does govern
-# all other use of the material that constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the Autoconf
-# Macro released by the Autoconf Archive. When you make and distribute a
-# modified version of the Autoconf Macro, you may extend this special
-# exception to the GPL to apply to your modified version as well.
-#serial 2
+#serial 3
# AE_FEATURE_DEFAULT_ENABLE: The next feature defined with AE_FEATURE will