Ports' QT5_USE assumes qt5-*, but build links executables to a specific minor version 5.7.*

[Yuri]

I had this problem: system had the older qt5-*-5.6.1 version. I 
installed qbittorrent using pkg. qbittorrent then failed saying it can't 
find the Qt_5.7 tag.

QT5_USE makes sure qt5-* dependencies exist, but the actual dependency 
is a specific qt5 minor version. pkg therefore installs such port but it 
then fails.


Is there any solution to this problem? Are qt versions with different 
minor numbers (qt5-*-5.6 and qt5-*-5.7) really incompatible? This might 
be a bug in the qt build process that it requires the minor version match.


Yuri