I need Qt4 packages for RHEL 8. "yum search qt" on RHEL 8.0 reveals only Qt5 packages.
Are there any Qt4.8 (or later) packages for RHEL 8?
It looks like getpagespeed has built some binaries here: https://centos.pkgs.org/8/getpagespeed-x86_64/
Probably not. Upstream support for qt 4 ended in 2015.
Start a port to Qt 5. Until then, run in a Qt 4 environment like EL 7.