I have an issue with the qt5 installation:

> lupdate-qt5 ../qTox/qtox.pro
Cannot find feature spec_pre.prf

I found that the file is actually on the disc:

> rpm -ql libqt5-qtbase-common-devel | grep spec_pre.prf
/usr/lib64/qt5/mkspecs/features/spec_pre.prf


I try to build an application that requires qt5 using qt-creator.

However, I'm stuck at this point. Do you know what have to be done to fix this 
issue?

I tested with https://github.com/tux3/qTox like this:
export PATH=/usr/lib64/qt5/bin/:$PATH
mkdir ../build; cd ../build;
qmake ../qTox/qtox.pro


Kind regards!