The libqxt archive contains a file QxtConfig.cmake under features/ that is required for CMake-based build scripts that want to link against libqxt. Please install this file along with the others. Reproducible: Always
I believe it should also be renamed to FindQxt.cmake beforehand.
And where should it be installed? /usr/lib64/cmake ?
libqxt upstream is dead and there's only a couple of Qt 4 revdeps still using this package. Once they're cleaned up, this package will be last rited.