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This package is distributed with the same licensing terms as Perl itself. At
time of writing, this consists of a dual licensing scheme. You are entitled to
enjoy the covenants of, at your option:
(1) The Free Software Foundation's GNU General Public License, version 1
or later; or
(2) The Artistic License, version 1 or later
This file contains copies of the most recent versions of these licenses--that
is, GNU GPL v3.0 and Artistic License 2.0. Use of these versions is encouraged
but not strictly required; consequently, the full text for older versions of
these licenses must be found elsewhere.
This software is provided by the copyright holders and contributors "AS IS"
and ANY EXPRESS OR IMPLIED WARRANTIES, including, but not limited to, the
In no event shall the copyright owner or contributors be liable for any
direct, indirect, incidental, special, exemplary or consequential damages
(including, but not limited to, procurement of substitute goods or services;
loss of use, data or profits; or business interruption) however caused and on
any theory of liability, whether in contract, strict liability or tort
(including negligence or otherwise) arising in any way out of the use of this
software, even if advised of the possibility of such damage.
Version 3, 29 June 2007
Copyright (c) 2007 Free Software Foundation, Inc. <>
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.
The GNU General Public License is a free, copyleft license for software and
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The licenses for most software and other practical works are designed to take
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Modified Version must bear a name that is different from the name of
the Standard Version.
(c) allow anyone who receives a copy of the Modified Version to make the
Source form of the Modified Version available to others under
(i) the Original License or
(ii) a license that permits the licensee to freely copy, modify and
redistribute the Modified Version using the same licensing terms
that apply to the copy that the licensee received, and requires
that the Source form of the Modified Version, and of any works
derived from it, be made freely available in that license fees
are prohibited but Distributor Fees are allowed.
Distribution of Compiled Forms of the Standard Version or Modified Versions
without the Source
(5) You may Distribute Compiled forms of the Standard Version without the
Source, provided that you include complete instructions on how to get the
Source of the Standard Version. Such instructions must be valid at the
time of your distribution. If these instructions, at any time while you
are carrying out such distribution, become invalid, you must provide new
instructions on demand or cease further distribution. If you provide valid
instructions or cease distribution within thirty days after you become
aware that the instructions are invalid, then you do not forfeit any of
your rights under this license.
(6) You may Distribute a Modified Version in Compiled form without the Source,
provided that you comply with Section 4 with respect to the Source of the
Modified Version.
Aggregating or Linking the Package
(7) You may aggregate the Package (either the Standard Version or Modified
Version) with other packages and Distribute the resulting aggregation
provided that you do not charge a licensing fee for the Package.
Distributor Fees are permitted, and licensing fees for other components
in the aggregation are permitted. The terms of this license apply to the
use and Distribution of the Standard or Modified Versions as included in
the aggregation.
(8) You are permitted to link Modified and Standard Versions with other works,
to embed the Package in a larger work of your own, or to build stand-alone
binary or bytecode versions of applications that include the Package, and
Distribute the result without restriction, provided the result does not
expose a direct interface to the Package.
Items That are Not Considered Part of a Modified Version
(9) Works (including, but not limited to, modules and scripts) that merely
extend or make use of the Package, do not, by themselves, cause the
Package to be a Modified Version. In addition, such works are not
considered parts of the Package itself, and are not subject to the terms
of this license.
General Provisions
(10) Any use, modification, and distribution of the Standard or Modified
Versions is governed by this Artistic License. By using, modifying or
distributing the Package, you accept this license. Do not use, modify,
or distribute the Package, if you do not accept this license.
(11) If your Modified Version has been derived from a Modified Version made by
someone other than you, you are nevertheless required to ensure that your
Modified Version complies with the requirements of this license.
(12) This license does not grant you the right to use any trademark, service
mark, tradename, or logo of the Copyright Holder.
(13) This license includes the non-exclusive, worldwide, free-of-charge patent
license to make, have made, use, offer to sell, sell, import and
otherwise transfer the Package with respect to any patent claims
licensable by the Copyright Holder that are necessarily infringed by the
Package. If you institute patent litigation (including a cross-claim or
counterclaim) against any party alleging that the Package constitutes
direct or contributory patent infringement, then this Artistic License to
you shall terminate on the date that such litigation is filed.