How to friend Qt app compiled&linked with Qt 4.8.4 on system with integrated Qt 4.8.6?

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How to friend Qt app compiled&linked with Qt 4.8.4 on system with integrated Qt 4.8.6?
I have my big project that written with Qt 4.8.4.
Now I purchased a new PC and install Kubuntu 14.10 based on Qt 4.8.6.
To develop my project I build from src Qt 4.8.4 and make install it.
I build my project successfully. But on run I have an error
Cannot mix incompatible qt library 0x40806 with this 0x40804.
Setting export LD_LIBRARY_PATH=/usr/local/Trolltech/Qt-4.8.4/lib (was empy) can't helps.
Is there a solution to run my application without rebuild my project with newly installed Qt 4.8.6 from sources?

I tested run application on another PC with fresh installed Kubuntu, it runs! No mixed conflicts. There is same 4.8.6 integrated of Qt.

SGaist

Hi,

Maybe a silly question but why not build it with Qt 4.8.6 ?

Are you using a release build in both cases ?

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Principally.

SGaist

I don't understand your answer