This directory contains the deal.II library.
-The deal.II library is copyrighted by the deal.II authors. This term
-refers to the people listed in the file `AUTHORS` and in the
-[authors list](https://www.dealii.org/authors.html) on the webpage.
-
-The deal.II library is free software; you can use it, redistribute it,
-and/or modify it under the terms of the <b>GNU Lesser General Public
-License</b> as published by the Free Software Foundation; either <b>version
-2.1</b> of the License, or (at your option) any later version. The full
-text of the GNU Lesser General Public version 2.1 is quoted below.
+The deal.II library is copyrighted by the deal.II authors. This term refers
+to the people listed in the file `AUTHORS` and in the [authors
+list](https://www.dealii.org/authors.html) on the webpage.
+The deal.II library is free software; it is licensed under the <b>GNU
+Lesser General Public License v2.1 or later</b>. The deal.II authors are in
+the process of relicensing the library to be dual-licensed under the
+<b>Apache License 2.0</b> with <b>LLVM Exception</b> and the <b>GNU Lesser
+General Public License v2.1 or later</b>. As such we require all new code
+contributions to the library to be dual licensed as outlined below.
Contributions
-------------
As a contributor to this project, you agree that all of your contributions
-be governed by the <b>Developer Certificate of Origin version 1.1</b>.
+to deal.II (a) be governed by the
+[<b>Developer Certificate of Origin version 1.1</b>](https://developercertificate.org/),
+and (b) be dual-licensed under the terms of the
+[<b>Apache License 2.0</b>](https://spdx.org/licenses/Apache-2.0.html)
+with
+[<b>LLVM Exception</b>](https://spdx.org/licenses/LLVM-exception.html)
+and the
+[<b>GNU Lesser General Public License v2.1 or later</b>](https://spdx.org/licenses/LGPL-2.1-or-later.html).
The deal.II project does 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 a compatible open source license
-(LGPL v2.1 for library code). The full text of the Developer Certificate of
-Origin version 1.1 is quoted below.
+deal.II project is held by its respective contributors.
Referencing the library
-----------------------
-In addition to the terms imposed by the LGPL v2.1 or later, we ask for the
-following courtesy:
+In addition to the terms imposed by the licenses, we ask for the following
+courtesy:
- Every publication presenting numerical results obtained with the help
of deal.II should state the name of the library and cite appropriate
Contact
-------
-For further questions regarding licensing and commercial use please contact the
-[deal.II principal developers, or project
-administrators](https://www.dealii.org/authors.html) directly.
+For further questions regarding licensing and commercial use please contact
+(one of) the
+[deal.II principal developers](https://www.dealii.org/authors.html) directly.
Full text of the [Developer Certificate of Origin version 1.1](https://developercertificate.org/)
this project or the open source license(s) involved.
```
+Full text of the [Apache License 2.0](https://spdx.org/licenses/Apache-2.0.html)
+--------------------------------------------------------------------------------
+```
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+
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+--------------------------------------------------------------------------------
+```
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into an Object form of such source code, you
+may redistribute such embedded portions in such Object form without complying
+with the conditions of Sections 4(a), 4(b) and 4(d) of the License.
+
+In addition, if you combine or link compiled forms of this Software with
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+```
-Full license text of the [GNU Lesser General Public License version 2.1](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html)
--------------------------------------------------------------------------------------------------------------------
-----
+Full text of the [GNU Lesser General Public License version 2.1](https://spdx.org/licenses/LGPL-2.1-or-later.html)
+------------------------------------------------------------------------------------------------------------------
```
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
projects / dealii.git / commitdiff