Re: Extensions License

On Do, 2017-06-15 at 11:06 +0200, Nikita Popov wrote: > On Tue, Jun 13, 2017 at 8:23 AM, Remi Collet <remi@fedoraproject.org> > wrote: > > > > > Hi, > > > > All extensions in php-src are PHP 3.01 Licensed > > (libs may, of course, have different license) > > > > Is there any strong rule about this ? > > Or is it OK to have a BSD Licensed extension ? > > > > Context: see sodium PR > > https://github.com/php/php-src/pull/2560 > > > > > > IMHO, make sense to have only PHP Licensed ext. > > > I think we should allow BSD/MIT licenses, as they are compatible with > and > less restrictive than the PHP license. TBH, the PHP license seems > somewhat > dubious when applied to extensions, as most of the additional clauses > are > simply not applicable (extensions do not bundle the Zend Engine and > extensions have no control over the PHP group or the PHP name). > Mind: The PHP License[1]  doesn't talk about the Zend engine, but "PHP Software", "PHP Software" is, since PHP License 3.01 compared to PHP License 3.0 defined as PEAR, PECL and PHP on [2] The "this software includes the ZendEngine" thing in the PHP distribution's license file[3] is not part of the PHP License, but a requirement for the PHP product, which includes the Zend Engine product, which is licensed under the Zend Engine License[4]. According to the most legal interpretations I know (IANAL ... ask two lawyers, get three answers ...) a BSD-licensed extension bundled in PHP would be relicensed under PHP license "automatically" when being distributed as part of the PHP product. I however think it makes sense to license all bundled extensions as PHP license with copyright PHP Group as this simplifies moving code around (i.e. if a BSD licensed extension contains some nice macro which might be useful to put into main/ this is simpler from a stricter legal pov if it's the same license) johannes [1] http://php.net/license/3_01.txt [2] http://php.net/software.php [3] http://git.php.net/?p=php-src.git;a=blob;f=LICENSE;h=9964e0737cc9be 0521b056be697a5fbeb14d01ef;hb=refs/heads/master [4] http://git.php.net/?p=php-src.git;a=blob;f=Zend/LICENSE;h=8acb9af4f 8a589076f305c31501565a2cfe0f6ff;hb=refs/heads/master