(Qt 5.4.1) This application failed to start because it could not find or load the Qt platform plugin “xcb”

Question

I reinstalled my ubuntu 14.04 and Qt 5.4.1 and Qtcreator.

Qt 5.4.1 was built from source with \"-opensource -nomake-test -nomake-example\" configure options.

Answer 1

export QT_PLUGIN_PATH=/plugins/platforms

Similar to what mbjoe says, it really works!