Undefined symbols:
  "vtable for cirrus::token", referenced from:
      __ZTVN6cirrus5tokenE$non_lazy_ptr in ccOzwbpP.o
  "typeinfo for cirrus::token", referenced from:
      typeinfo for cirrus::wordTokenin ccRoIkae.o
  "cirrus::charCodeMap", referenced from:
      __ZN6cirrus11charCodeMapE$non_lazy_ptr in ccRoIkae.o
ld: symbol(s) not found
collect2: ld returned 1 exit status