insert GPL v3 text here

AUTOCONF CONFIGURE SCRIPT EXCEPTION

Version 3.0, 18 August 2009

Copyright © 2009 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.

This Exception is an additional permission under section 7 of the GNU General
Public License, version 3 ("GPLv3"). It applies to a given file that bears a
notice placed by the copyright holder of the file stating that the file is
governed by GPLv3 along with this Exception.

The purpose of this Exception is to allow distribution of Autoconf&apos;s
typical output under terms of the recipient&apos;s choice (including
proprietary).

0. Definitions.   
"Covered Code" is the source or object code of a version of Autoconf that is a
covered work under this License.

"Normally Copied Code" for a version of Autoconf means all parts of its
Covered Code which that version can copy from its code (i.e., not from its
input file) into its minimally verbose, non-debugging and non-tracing output.

"Ineligible Code" is Covered Code that is not Normally Copied Code.

1. Grant of Additional Permission.   
You have permission to propagate output of Autoconf, even if such propagation
would otherwise violate the terms of GPLv3. However, if by modifying Autoconf
you cause any Ineligible Code of the version you received to become Normally
Copied Code of your modified version, then you void this Exception for the
resulting covered work. If you convey that resulting covered work, you must
remove this Exception in accordance with the second paragraph of Section 7 of
GPLv3.

2. No Weakening of Autoconf Copyleft.   
The availability of this Exception does not imply any general presumption that
third-party software is unaffected by the copyleft requirements of the license
of Autoconf.