[Interest] Qt, openssl and redistribution (of binary packages)

René J. V. Bertin rjvbertin at gmail.com
Mon Jan 23 11:12:07 CET 2017

Constantin Makshin wrote:

Thank you Constantin,

> Qt can be redistributed under the terms of LGPL which allows linking
> against everything so there are no license-related issues in linking Qt
> and OpenSSL.

The MacPorts packaging lists 3 licenses governing Qt5, the LGPL v2 and v3, but 
also GPL3. Are you saying we shouldn't be listing the GPL3 license and that we 
can do so without "risk"?

Can Qt Creator be redistributed uder the LGPL too? MacPorts has that one down as 
covered under the GPL3, which does make it incompatible with linking with 

> AFAIK the primary (if not the only one) reason against linking to
> libraries like OpenSSL is that redistribution of cryptographic software
> is forbidden in some countries. Loading these libraries at runtime is

You may well be right, because even when built for runtime openssl loading 
QtNetwork still includes OpenSSL headers during compilation. And I have a hunch 
that's enough for lawyers on the war path...


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