diff --git a/doc/collaboration/code/licenses.rst b/doc/collaboration/code/licenses.rst deleted file mode 100644 index e0abd548d0e..00000000000 --- a/doc/collaboration/code/licenses.rst +++ /dev/null @@ -1,60 +0,0 @@ -.. _licenses: - -License Guidelines -################## - -The Zephyr Kernel is licensed under a BSD 3-clause license. This is a -permissive license that allows our customers to write kernel-level code -without having to open source their code. All code linked in a Zephyr Kernel -binary image must be permissively licensed. The source tree includes some GPL --licensed build tools, but those are not linked to the final binary image, -and thus the image itself is not GPL-tainted. - -Customers are able to add GPL code to their kernel. Therefore, all -permissively licensed code in the project must be GPL-compatible. - -.. caution:: - - Some permissive licenses are not GPL-compatible). - -Acceptable Licenses -******************* - -The following list shows all licenses that can be used without further -considerations: - -* 2-clause BSD -* 3-clause BSD -* MIT -* ISC -* NCSA, the license for Clang and LLVM -* True public domain -* Creative Commons Zero (public domain) but not other CC licenses - - -Licenses that Require Caution -***************************** - -The following list shows the licenses that can be used if the special -considerations included are taken into account: - -* GPL -* Apache: Incompatible with GPLv2 but not GPLv3, according to the FSF. -* Mozilla: weak copy-left. It is weaker than LGPL. -* Microsoft public license -* LGPL -* OpenSSL license: permissive, but not GPL compatible. -* BSD 4-clause: not GPL compatible. It is difficult to attribute. - -IANAL Disclaimer -**************** - -Be cautious about working with GPL code while working on permissively -licensed code. - -Do not copy code or have a different project's code open while you re- -implement the same code in your project. - -It is allowed to look at other project's documentation, code concepts, -comments, and git commits while implementing new code. You may contribute -code to unrelated GPL projects while working on permissively licensed code. \ No newline at end of file