From: maier
The deal.II library has been placed under an Open
Source license, in the sense advocated by the Open Source
- Initiative. You are thus free to copy and use it, and you have
- free access to all source codes. However, deal.II
- is not in the public domain, it is property of and copyrighted by
- the deal.II authors, and there are restrictions
- on its use. We will give some hints on license issues first. The
- legally binding license is the Q Public
- License (QPL) at the bottom of this page. Furthermore, deal.II
- distributions come bundled with some third party software for which
- the deal.II authors do not own the copyright. The licenses of these
- parts are discussed below.
+ href="http://www.opensource.org" target="_top">Open Source
+ Initiative. You are thus free to copy and use it, and you have
+ free access to all source code.
+
+ However, deal.II is not in the public domain, it
+ is property of and copyrighted by the
+ deal.II authors, and
+ there are restrictions on its use:
+ The legally binding license is the GNU Lesser
+ General Public License (LGPL) as published by the Free Software
+ Foundation; either version 2.1 of the License, or (at your option)
+ any later version.
+
+ Furthermore, the deal.II distribution comes bundled with some third
+ party software for which the deal.II authors do not own the
+ copyright. The licenses of these parts are discussed
+ below.
+
In this document, as well as in the program files, the terms
@@ -40,247 +50,609 @@
Kanschat and a long list of contributors.
-
- deal.II is distributed under the Open Source
- license called the Q Public License (or "QPL") listed
- in full below. Essentially, an interpretation of this license is
- that you can use the library free of charge for developing your own
- programs. However, if you plan to distribute these programs to others,
- certain restrictions are imposed by the QPL.
+
-
- In non-legal terms, the license stipulates that if you want
- to give your program to someone else in whatever form (including as
- a binary executable), you have to make the entire source code of
- your own program and all modifications to the deal.II library
- available free of charge as well.
-
+ As a contributor to this project, you agree that any of your
+ contributions be licensed under the same terms and conditions as
+ the license of the deal.II project granted to you.
+
-
- We recognize that giving away the source code may be an
- unacceptable restriction in a commercial setting. As the owners of
- the sources, we are able to grant you a differently licensed version
- of the deal.II library that does not contain this
- requirement, and we are very much willing to negotiate the terms of
- such a license. Please contact the authors of the library if you are
- interested in commercial use of deal.II.
-
+ We, the deal.II authors, do not require
+ copyright assignments for contributions. This means that the
+ copyright for code contributions in the deal.II project is held by
+ its respective contributors who have each agreed to release their
+ contributed code under the terms of the LGPL v2.1 or later.
+
- In addition to the terms imposed by the QPL, we ask for the
- following courtesy:
- Restrictions on and commercial use of the library
-
- Contributions
Referencing the library
+ Referencing the library
-
- This is the usual, fair way of giving credit to contributors to a
- scientific result. In addition, it helps us justify our effort in
- developing deal.II as an academic undertaking.
-
+
+ This is the usual, fair way of giving credit to contributors to a + scientific result. In addition, it helps us justify our effort in + developing deal.II as an academic undertaking. +
-
We keep a list of publications
using deal.II. Feel free to let us know about your publications.
-
-
-
- Parts of the deal.II distribution under a separate license
-
-
- Some of the files in the contrib/
subdirectory are by
- other people, and are distributed under separate licenses. These
- files are not part of the deal.II library, but
- they are part of our distribution. They are generally available for
- use in non-commercial academic settings. For commercial use and if
- you want to distribute your codes, please consult the licenses of
- these parts of the deal.II distribution. We made sure that those parts of the
- distribution for which the license is not entirely free for all uses can be
- disabled upon configuration of deal.II without
- unduly restricting the functionality of the rest of the
- library.
-
-
-
- In particular, these are libraries that we distribute in the
- contrib/
subdirectory, courtesy of their authors:
-
- - deal.II can interface with a number of other packages that you have to install - yourself. They are, of course, covered by their own licenses.
- -- The QPL was originally developed by - Troll Tech for their - Qt program library, but has since gained some support by other - library authors as well. - For more information on the QPL, please follow - this link. + deal.II comes bundled with copies of + UMFPACK, + Threading Building Blocks, + BOOST and + FunctionParser. + These projects reside in the subdirectory "bundled/". Please note + that these projects are copyrighted by others than the deal.II + authors and are covered by different licenses. For details, + consult the respective webpage.
- - - -- The intent of this license is to establish freedom to share and change the - software regulated by this license under the open source model. -
- This license applies to any software containing a notice placed by the - copyright holder saying that it may be distributed under the terms of - the Q Public License version 1.0. Such software is herein referred to as - the Software. This license covers modification and distribution of the - Software, use of third-party application programs based on the Software, - and development of free software which uses the Software. -
- 1. You are granted the non-exclusive rights set forth in this license - provided you agree to and comply with any and all conditions in this - license. Whole or partial distribution of the Software, or software - items that link with the Software, in any form signifies acceptance of - this license. -
- 2. You may copy and distribute the Software in unmodified form provided - that the entire package, including - but not restricted to - copyright, - trademark notices and disclaimers, as released by the initial developer - of the Software, is distributed. -
- 3. You may make modifications to the Software and distribute your - modifications, in a form that is separate from the Software, such as - patches. The following restrictions apply to modifications: -
--- a. Modifications must not alter or remove any copyright notices in - the Software. -
- b. When modifications to the Software are released under this - license, a non-exclusive royalty-free right is granted to the - initial developer of the Software to distribute your modification - in future versions of the Software provided such versions remain - available under these terms in addition to any other license(s) of - the initial developer. -
- 4. You may distribute machine-executable forms of the Software or - machine-executable forms of modified versions of the Software, provided - that you meet these restrictions: -
--- a. You must include this license document in the distribution. -
- b. You must ensure that all recipients of the machine-executable forms - are also able to receive the complete machine-readable source code - to the distributed Software, including all modifications, without - any charge beyond the costs of data transfer, and place prominent - notices in the distribution explaining this. -
- c. You must ensure that all modifications included in the - machine-executable forms are available under the terms of this - license. -
- 5. You may use the original or modified versions of the Software to - compile, link and run application programs legally developed by you - or by others. -
- 6. You may develop application programs, reusable components and other - software items that link with the original or modified versions of the - Software. These items, when distributed, are subject to the following - requirements: -
--- a. You must ensure that all recipients of machine-executable forms of - these items are also able to receive and use the complete - machine-readable source code to the items without any charge - beyond the costs of data transfer. -
- b. You must explicitly license all recipients of your items to use - and re-distribute original and modified versions of the items in - both machine-executable and source code forms. The recipients must - be able to do so without any charges whatsoever, and they must be - able to re-distribute to anyone they choose. -
- c. If the items are not available to the general public, and the - initial developer of the Software requests a copy of the items, - then you must supply one. -
bundled/
), then they may impose different terms. Please
+ consult the licenses of these packages for more information.
+
- The Software and this license document are provided AS IS with NO WARRANTY - OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS - FOR A PARTICULAR PURPOSE. -
- This license is governed by the Laws of Germany. Disputes shall be settled - by Amtsgericht Heidelberg. + +
+ For further questions regarding licensing and commercial use please + contact the deal.II maintainers directly via one of the following mail + addresses: +
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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + + Also add information on how to contact you by electronic and paper mail. + + You should also get your employer (if you work as a programmer) or your + school, if any, to sign a "copyright disclaimer" for the library, if + necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + + That's all there is to it! ++
- We have placed deal.II under an Open Source - license, which allows you to use the library free of charge. You - are guaranteed full access to the source code and are encouraged - to help in the further development of the library. Follow this link to read the full - text of the license, + The deal.II library is free software; you can use it, redistribute + it, and/or modify it under the terms of the + GNU Lesser General + Public License (LGPL) as published by the Free Software + Foundation; either version 2.1 of the License, or (at your option) + any later version. +
++ This allows you to use the library free of charge for private, + academic, or commercial use (under the terms of the LGPL v2.1 or + later). You are guaranteed full access to the source code and are + encouraged to help in the further development of the library. Follow + this link for detailed + information.
-- The basics of the license are in short: + Please note:
- deal.II can interface with a number of - other packages that you have to install - yourself. They are, of course, covered by their own licenses. In addition, - deal.II comes bundled with copies of - UMFPACK, - Threading Building Blocks, - BOOST - and - FunctionParser, - courtesy of their authors. These are also covered by their - own licenses; please refer to their webpages for more information. -