Sorry, I expressed this in a bad way:

I did try your suggestion (already suspecting that it would not work) and then googled to find a reference. I just didn't use past tense to express that the reason, why it does not wok is not accidental and that it will never work that way, because of the design of QtQucik2 and Scenegraph. Recompiling with -O2 didn't work too, but since the original build was without optimization (and with -g), I had little hope in the first place.

@mikecomputing: Which libraries does Nemo mobile use?