Undefined reference to 'vtable for xxx'

Question

takeaway.o: In function `takeaway\':
project:145: undefined reference to `vtable for takeaway\'
project:145: undefined reference to `vtable for takeaway\'
takeaway.o         


        

Answer 1

it suggests that you fail to link the explicitly instantiated basetype public gameCore (whereas the header file forward declares it).

Since we know nothing about your build config/library dependencies, we can't really tell which link flags/source files are missing, but I hope the hint alone helps you fix ti.