With Qt 5.5 the same is:
LD_LIBRARY_PATH=/home/ubuntu/tmp/uitk/b2/ubuntu-ui-toolkit-1.3.1896+16.04.20160316.1/lib ALARM_BACKEND=memory QML2_IMPORT_PATH=/home/ubuntu/tmp/uitk/b2/ubuntu-ui-toolkit-1.3.1896+16.04.20160316.1/qml /usr/lib/x86_64-linux-gnu/qt5/bin/qmlplugindump -nonrelocatable Ubuntu.Components 0.1 > /home/ubuntu/tmp/uitk/b2/ubuntu-ui-toolkit-1.3.1896+16.04.20160316.1/qml/Ubuntu/Components/plugins.qmltypes
With Qt 5.5 the same is: PATH=/home/ ubuntu/ tmp/uitk/ b2/ubuntu- ui-toolkit- 1.3.1896+ 16.04.20160316. 1/lib ALARM_BACKEND= memory QML2_IMPORT_ PATH=/home/ ubuntu/ tmp/uitk/ b2/ubuntu- ui-toolkit- 1.3.1896+ 16.04.20160316. 1/qml /usr/lib/ x86_64- linux-gnu/ qt5/bin/ qmlplugindump -nonrelocatable Ubuntu.Components 0.1 > /home/ubuntu/ tmp/uitk/ b2/ubuntu- ui-toolkit- 1.3.1896+ 16.04.20160316. 1/qml/Ubuntu/ Components/ plugins. qmltypes
LD_LIBRARY_