In case anybody is upgrading to Fedora 28:
I'm running CQRLOG on Fedora 28. It's working great now, but I had to add an extra package, mariadb-connector-c-devel to get it working. Without that devel package, CQRLOG gives this error:
. . . . Can not load default MySQL library ("libmysqlclient.so.16" or "libmysqlclient.so").
Installing that devel package provides the libmysqlclient.so library, and happiness ensues.
Note: From some of the bugzilla notes, I get the impression this isn't the way things ought to work, so this workaround might not be needed for long.
73 Robert AJ5E