[Pkg-kde-extras] Bug#927991: (no subject)

[Gregor Riepl]

FYI, this flag is used to request build arguments for linking against the
embedded MySQL server library.

That library was removed in MySQL 8.0:
https://mysqlserverteam.com/mysql-8-0-retiring-support-for-libmysqld/

MariaDB still supports it, and there's a separate package called libmariadbd
containing it. However, mariadb_config doesn't support getting the
corresponding build flags.

If Amarok can work without the embedded MySQL server, I think a quick fix
would be to remove the check for libmysqldbd/libmariadbd.
Otherwise, the cmake find script needs to be patched.