I installed d1x-rebirth and d2x-rebirth out of the Fedora repos and those worked fine. Any particular reason you want to build them?
Honestly, I didn't assume a package would be available, so I didn't look. But now I can't find a package by the name of dxx-rebirth, d1x-rebirth, or d2x-rebirth for F37.
edit: After various travails, determined the package names are literally "d1x" and "d2x." Well, at least that fixes things up. Now to test...
edit the second: Well, it's working. MIDI could sound better, but I'm an old OPLhead. What's the best solution for pointing the executable to the registered version - should I overwrite the contents of the demo files provided with the packages, or add a path entry to the dxx ini?