Qmake error when building Bigscreen


Trying to build Bigscreen on an HP netbook I have. Using KDE Neon as the distro, all updates done. Going through the instructions on the readme and am stumped at this error when running this part:

The error is:
CMake Error at /usr/local/share/ECM/modules/ECMQueryQmake.cmake:30 (message):
No qmake Qt5 binary found. Can’t check QT_INSTALL_PLUGINS as required

I have tried all of the solutions I’ve found online to fix Qt5 errors. Installing dependencies, symlinking, etc. I can try to post my error log if needed/wanted. Any help would be appreciated, even if Bigscreen doesn’t work well on this netbook I would at least like to see if I can get that far.