Linux Mint x64: Qt 5.3.1 plugin deployment: incompatible qt library?

Question

Qt

I used CMake to build the plugin and the application that uses it. Both work great on my machine. Through ldd, I looked at the dependencies and copied them, along with the application and the plugin, onto a clean installation of Linux Mint x64 (the same version as on the developer's machine). When launched, the application gives an error:

plugin [plugin_path] uses incompatible qt library Qt 5.3.1 [release]

Both the plugin and the application are compiled in release mode (tried in different ways, without result)
Any ideas?

Answer 1

Problem solved: exported also QML2_IMPORT_PATH, QT_PLUGIN_PATH and also copied Qt platform plugins (xcb) dependencies