%Error-PROTOTYPEMIS: t/t_constraint_extern_bad.v:8:22: Definition not found for extern prototype 'missing_bad'
    8 |    extern constraint missing_bad;
      |                      ^~~~~~~~~~~
                     ... For error description see https://verilator.org/warn/PROTOTYPEMIS?v=latest
%Error: t/t_constraint_extern_bad.v:11:20: extern not found that declares 'missing_extern'
   11 | constraint Packet::missing_extern { }
      |                    ^~~~~~~~~~~~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to