cannot compile Qt mobility in Ubuntu

Hi,
I am trying to install Qt mobility but after i run make I get this error:

Quote:

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In file included from bluetooth/qbluetoothlocaldevice.cpp:43:0:
bluetooth/qbluetoothlocaldevice_p.h:56:24: fatal error: QDBusContext: No such file or directory
compilation terminated.

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On the other hand I installed all Qt mobility packages through Ubuntu (12.04) software centre but I cannot find where this library is located in my filesystem!
Any ideas for either problem would help a lot!

Forgot to mention that I am trying this running Necessitas+I have Qt Creator 4.8 installed on the machine.