After a fresh install of leap 15.0, I added all of the usual long list of Qt libraries and development headers, but was still unable to build at all.
Blocking point 1: no
It is actually there, but as
qhelpgenerator-qt5, which cmake does not find. It seems too ugly to partly installing some qt4 bits just for that, so instead I opted for a somewhat less ugly workaround:
cd /etc/alternatives ln -s /usr/bin/qhelpconverter-qt5 qhelpconverter ln -s /usr/bin/qhelpgenerator-qt5 qhelpgenerator cd /usr/bin ln -s /etc/alternatives/qhelpconverter qhelpconverter ln -s /etc/alternatives/qhelpgenerator qhelpgenerator
This isn’t 100% elegant, but works and partly documents through the filesytem what fiddling has been done.
This might be of some use for others…