Raze, for whatever reason, absolutely refuses to check any of the FileSearch or GameSearch paths in the INI file for Raze.pk3. Running a copy of Raze that has been sudo make install'ed, from any folder that does NOT contain Raze.pk3, spews this error message:

However, popping up a terminal window and changing to any folder containing raze.pk3 causes the game to run normally, as does manually changing the working folder of any menu entry created for it, as seen here:

For what it's worth, for some reason, sudo make install from the build folder copies raze.pk3 into /usr/local/share/games/doom which otherwise contains no other files. Raze doesn't detect it in there, either.