Comment by korethr

Okay, but even if GTK is a GNU project or a FSF project, why does that mean it qualifies for being part of a future GPLv4 licensed EMACS, and QT does not? Both are available under the LGPL. I wonder if Stallman expects that a GPLv4 would likely or definitely be incompatible with LGPL3. I don't think it's because the LGPL version would be bumped if a v4 came out; GTK is still on LGPLv2.1