"Path to Qt libraries on device" does not work properly for QNX

It seems to me that whenever a project uses Qt Quick 2, then not all environment variables get properly set.

Using quick/controls/gallery as an example:

If I set "Path to Qt libraries on device=/home/sahumada/qt5-5.3/lib" (which is where I put all the Qt 5.3 libraries to) then all other components are taken from the system (e.g. plugins, qml, imports, etc), so you get an error.

If I set environment variables pointing to my Qt 5.3 components on the device (e.g. LD_LIBRARY_PATH, QML2_IMPORT_PATH, QT_LIB_PATH, QT_PLUGIN_PATH, QT_QPA_FONTDIR, etc) then I get an error about incompatible versions:

• qrc:/main.qml:45 plugin cannot be loaded for module "QtQuick": The plugin '/home/sahumada/qt5-5.3/qml/QtQuick.2/libqtquick2plugin.so' uses incompatible Qt library. (5.3.0) [release]

so I guess it keeps mixing my Qt libraries defined by environment variables and the system ones.

If I unset "Path to Qt libraries on device", then everything works by only using the environment variables.