[Qt-interest] cmake: ui library?

[Rui Maciel]

I'm a cmake newbie and I've started a small pet project which relies on Qt 
for the UI, and the project's build process is managed with cmake.  

The project tree follows a deep structure, with the Qt source code and forms 
stored in ~/src/ui, being ~ the project directory.

The UI has been designed following design by contract principles, and 
therefore the remaining components only interact with the UI through a set 
of interfaces which were defined previously.  

Due to this, I would like to organize the UI part of this project as a 
static library. With that in mind, I've added a CMakeLists.txt file to 
~/src/ui, with the following content:

<example ~/src/ui/CMakeLists.txt>
INCLUDE(${QT_USE_FILE})
ADD_DEFINITIONS(${QT_DEFINITIONS})

set(libui_HEADERS
        # some headers with Qt code
)

set(libui_SOURCES
        # some sources which Qt code
)

set(libui_FORMS 
        #some Qt forms
)
</example>

Then, I proceeded to pass libui to the TARGET_LINK_LIBRARIES() command and 
add ${libui_HEADERS} to the projec_HEADERS list.

Yet, when I try to compile the project, the compiler throws a series of 
errors about "undefined reference to `vtable for <ui class name here>'".

So, does anyone know how to setup cmake to churn out a static library from 
Qt code?


Thanks in advance,
Rui Maciel