Hi, I think Christoph was right. For details, please see below.
On Sat, Jun 27, 2020 at 6:22 AM Florian Weimer <f...@deneb.enyo.de> wrote: > > At this point, I have no idea what the actual intent is. In response to your concern, I filed a support request to clarify the wolfSSL license. Here is the relevant part of my correspondence with Kaleb Hines, whom I have met on multiple occasions: > 3. The file COPYING and the individual disclaimers in most files state > that your library is provided under the GPLv2 or later, while the file > LICENSING and your website omit the 'or later' language. This is a > subtle but important difference (the details of which I probably do > not fully appreciate). It may determine whether wolfSSL can link with > projects released under the GPLv3, such as 'readline' (used in the > command line utility 'psql'). Would you please clarify that your open > source license is the GPLv2+ (emphasis on plus) and includes the ''or > later' language? That was Kaleb's reply: > 3) This is actually clarified in the GPLv2 licensing itself: > https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html > > 9. The Free Software Foundation may publish revised and/or new > versions of the General Public License from time to time. Such new > versions will be similar in spirit to the present version, but may differ > in detail to address new problems or concerns. > > Each version is given a distinguishing version number. If the > Program specifies a version number of this License which applies > to it and "any later version", you have the option of following the > terms and conditions either of that version or of any later version > published by the Free Software Foundation. If the Program does > not specify a version number of this License, you may choose > any version ever published by the Free Software Foundation. > > Since wolfSSL specifies the distinguished version 2, this part of > section 9 of the GPLv2 license applies: > > If the Program specifies a version number of this License which > applies to it and "any later version", you have the option of > following the terms and conditions either of that version or of any > later version published by the Free Software Foundation. > > Hope that helps to clear up any questions, the verbage may > differ between our sources and the LICENSE and website > document however all give a distinguished version. You may > either follow the terms and conditions of v2 or of any later version > of the GPL license published by the Free Software Foundation > as part of the GPLv2 licensing. If this needs any further clarity we > would be more than happy to setup a call with our management > for you to go over any outstanding concerns! > > Warmest Regards, > > Kaleb Himes > > If you enjoy working with wolfSSL please leave us a star on our > github repository https://github.com/wolfSSL/wolfssl! > > Position: Software Engineer > Website: www.wolfssl.com > Hours: 09:00 - 17:00 MDT > Email: ka...@wolfssl.com > News: TLS 1.3 is now available in wolfSSL! If you have a moment, please leave a star in their Github repo. Kind regards Felix Lechner
