Well, in ClearOS what made me think it compiled correctly is because it didn't give any errors that I saw when I followed these instructions:
But, it didn't work... and what REALLY made me think it was working is my ignorance
But, in Fedora 32, it complied just fine. I'm actually posting here from this machine.
I'm going to use this machine as my workstation for a while to be sure things are working ok, then I'll reach out to the people at elrepo and see what happens.