Why am I getting “undefined reference to vtable…” errors when linking this Qt 5.0 application?

Question

I\'ve got a relatively simple Qt 5.0 project that uses CMake 2.8.9:

CMakeLists.txt:

cmake_minimum_required(VERSION 2.8.9)
set(CMAKE_INCLUDE_CURRENT_D         


        

Answer 1

Turns out I forgot:

set(CMAKE_AUTOMOC ON)

At the top of the CMakeLists.txt file.