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

I also ran into this problem yesterday and the above mentioned answers did't help. I already used set (CMAKE_AUTOMOC ON) and also qt5_wrap_cpp.

I tried to remember what I did, because I had a working version but it stopped working after "some" changes. I finally remembered that I tried to split the include files into a separate directory hierarchy. After reverting that and putting the include files back into the CMakeLists.txt it worked again. I sure don't know why, and I would like to know what went wrong, but I settled now for keeping the includes near the cpp files.

set(SOURCES
    buffer.h
    ITVSet.h
    MainWindow.h
    MainWindow.cpp
    TVSet.h
    TVSet.cpp
)