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Relicensing: require all new contributions to be dual licensed #16666

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Relicensing: require all new contributions to be dual licensed #16666

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4b39ede
Relicensing: update LICENSE.md
tamiko Feb 19, 2024
3cea2bd
Relicensing: update CONTRIBUTING.md
tamiko Feb 19, 2024
8435e0a
doc: update license information
tamiko Feb 20, 2024
59b80a9
doc: remove outdated license information from readme.html
tamiko Feb 21, 2024
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11 changes: 8 additions & 3 deletions CONTRIBUTING.md
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Expand Up @@ -49,6 +49,11 @@ else. If you are new to the project then we will work with you to ensure
your contributions are formatted with this style, so please do not think of
it as a road block if you would like to contribute some code.

The library is licensed under the GNU Lesser General Public License; while
you will retain copyright on your contributions, all changes to the core
library must be provided under this common license.
As a contributor to this project, you agree that all of your contributions
to deal.II (a) be governed by the <b>Developer Certificate of Origin
version 1.1</b> and (b) be dual-licensed under the terms of 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>; see LICENSE.md for details. 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.
270 changes: 248 additions & 22 deletions LICENSE.md
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Expand Up @@ -3,36 +3,40 @@ deal.II Copyright and License

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
Expand Down Expand Up @@ -73,9 +77,9 @@ but you also are not restricted by their license.
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/)
Expand Down Expand Up @@ -120,10 +124,232 @@ By making a contribution to this project, I certify that:
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)
--------------------------------------------------------------------------------
```
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.

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direction or management of such entity, whether by contract or
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outstanding shares, or (iii) beneficial ownership of such entity.

"You" (or "Your") shall mean an individual or Legal Entity
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"Contribution" shall mean any work of authorship, including
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"Contributor" shall mean Licensor and any individual or Legal Entity
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2. Grant of Copyright License. Subject to the terms and conditions of
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except as required for reasonable and customary use in describing the
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8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
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Work (including but not limited to damages for loss of goodwill,
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has been advised of the possibility of such damages.

9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
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License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.

END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.

Copyright [yyyy] [name of copyright owner]

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
```

Full text of the [LLVM Exception](https://spdx.org/licenses/LLVM-exception.html)
--------------------------------------------------------------------------------
```
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
software that is licensed under the GPLv2 ("Combined Software") and if a
court of competent jurisdiction determines that the patent provision (Section
3), the indemnity provision (Section 9) or other Section of the License
conflicts with the conditions of the GPLv2, you may retroactively and
prospectively choose to deem waived or otherwise exclude such Section(s) of
the License, but only in their entirety and only with respect to the Combined
Software.
```

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
Expand Down
2 changes: 1 addition & 1 deletion doc/README.md
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Expand Up @@ -2,7 +2,7 @@ This folder contains the html documentation of deal.II
======================================================

The documentation is generally covered by the same license as the deal.II
library itself, namely LGPL-2.1+.
library itself; see LICENSE.md for details.

Exceptions:

Expand Down