Le lundi, 13 janvier 2014, 17.38:12 Didier Raboud a écrit : > Le samedi, 11 janvier 2014, 14.22:28 Daniel Kahn Gillmor a écrit : > > 0) ask CUPS to move from GPL2 to GPL2+ (with or without OpenSSL > > exception) > > As asking generally can't hurt, I have filed > https://cups.org/str.php?L4337 on the upstream bugtracker to discuss > that. I'll keep the list posted. The answer came back faster than I expected and is public , I'm quoting it here for completeness' sake: Le lundi, 13 janvier 2014, 14:24:33 Michael Sweet a écrit : > We cannot, for a number of legal and (Apple) liability reasons, > relicense CUPS as [L]GPL2+. It will never happen. > > OpenSSL support has been removed from the CUPS 2.0 source code and is > not an option. > > That leaves you with using GnuTLS ([L]GPL2/3) or porting Apple's > CDSA/Security code (Apache license), although the Apache license may > not be GPL3 compatible according to the FSF. Given that GnuTLS is > included with basically every Linux distribution as a standard OS > component, it SHOULD automatically fall under the [L]GPL2/3 exception > for system libraries (just as OpenSSL should have fallen under the > same exception...) If not, then I humbly suggest you talk to the FSF. Now, for the set of options he described: 1) OpenSSL As he claims that OpenSSL has been removed from the master CUPS branch, I think that this, by itself, disqualifies the linking of libcups2 against OpenSSL, as it would be a dead end. 2) GnuTLS 2.x is useable but deprecated, 3.x is GPLv3+ through GMP. We're back to "talk to the FSF to license GMP back to LGPLv2+" 3) Apple CDSA / libsecurity From , this is currently being deprecated by Apple from OSX v10.7. Also, it licensed under the APSL [Apple Public Source License] which is incompatible with the GPL. It isn't packaged in Debian as far as I could find. So in the current situation, I don't see any good long-term solution but a port to another license-compatible library such as polarssl… Cheers, OdyX  And GPG-signed: http://www.cups.org/pipermail/cups-devel/2014-January/014768.html
Description: This is a digitally signed message part.