[CMake] can't link simple qt example

[Pau Garcia i Quiles]

> One thing of note: In order for QT4_AUTOMOC to work, I had to move the
> definition of the Pixmap class into a new header file named main.h. It seems
> in general putting your Q_OBJECT class defs in a header is required when
> building Qt projects under CMake... but there's probably some way around it.

That's probably related to this bug:

http://public.kitware.com/Bug/view.php?id=9955

-- 
Pau Garcia i Quiles
http://www.elpauer.org
(Due to my workload, I may need 10 days to answer)