https://community.kde.org/Policies/Licensing_Policy
LGPL compatible licence is needed for Frameworks etc, to quote from above "*Source files* that are part of a library with a public API which is part of the KDE Platform (kdelibs, kdepimlibs, kde-runtime and KDE Frameworks)". But if it's a standalone library that's fine to be GPL, it's up to the apps to make sure they're happy with that restriction/protection and most will be. Jonathan
