Documentation/process/license-rules.rst

56 license list at https://spdx.org/licenses/ along with the license texts.
98    exception applies. When multiple licenses apply, an expression consists
102    License identifiers for licenses like [L]GPL with the 'or later' option
126    licenses::
139    AND should be used if the file has multiple licenses whose terms all
154 The licenses currently used, as well as the licenses for code added to the
157 1. _`Preferred licenses`:
159    Whenever possible these licenses should be used as they are known to be
160    fully compatible and widely used.  These licenses are available from the
189      this is a single valid identifier, but e.g. for licenses with the 'or
211       SPDX-URL: https://spdx.org/licenses/GPL-2.0.html
226       SPDX-URL: https://spdx.org/licenses/MIT.html
237 2. Deprecated licenses:
239    These licenses should only be used for existing code or for importing
240    code from a different project.  These licenses are available from the
264    The metatag requirements for 'other' licenses are identical to the
265    requirements of the `Preferred licenses`_.
270       SPDX-URL: https://spdx.org/licenses/ISC.html
286    These licenses should only be used to dual license code with another
287    license in addition to a preferred license.  These licenses are available
312    The metatag requirements for 'other' licenses are identical to the
313    requirements of the `Preferred licenses`_.
318       SPDX-URL: https://spdx.org/licenses/MPL-1.1.html
335    Some licenses can be amended with exceptions which grant certain rights
391       SPDX-URL: https://spdx.org/licenses/Linux-syscall-note.html
406       SPDX-URL: https://spdx.org/licenses/GCC-exception-2.0.html
421 verification (e.g. checkpatch.pl) and to have the licenses ready to read