How to add plugins to Qt

[SPRB]

Development environment details
OS details : Linux ( Ubuntu 12.04 LTS )
Application framework: Qt Creator 2.7.0 Based on Qt 5.0.2 (32 bit)

Test 1 : Running a QT application on a Ubuntu environment where there is no qt installed on the current user account. ( Note : Other user account has a Qt creator installed in it )
Result : Application is working perfectly.

Test 2: Trying to run the same application on a Ubuntu environment where none of the user Accounts has Qt installed on it.
Result : Error : Failed to load platform plugin "xcb". Available platforms are:
Aborted (core dumped).

Other details:
Using following .sh file to redirect the qt library path. ( Application is taking the lib files perfectly from the user
defined path)

@ #!/bin/sh
appname=basename $0 | sed s,\.sh$,,
dirname=dirname $0
tmp="${dirname#?}"

if [ "${dirname%$tmp}" != "/" ]; then
dirname=$PWD/$dirname
fi
#LD_LIBRARY_PATH=$dirname

LD_LIBRARY_PATH=$PWD/lib
export LD_LIBRARY_PATH
$dirname/$appname "$@"@

Anybody please help me to find the solution for the following error:
Failed to load platform plugin "xcb". Available platforms are:
Aborted (core dumped).

OR: Please help me to add plugins to deployment ,

[stevenceuppens]

Hi,

Since version 5, Qt uses a "platform abstraction system (QPA)":http://qt-project.org/wiki/Qt-Platform-Abstraction to abstract from the underlying platform.

The implementation for each platform is provided by plugins. For X11 it is the XCB plugin. See " Qt for X11 requirements":http://qt-project.org/doc/qt-5.0/qtdoc/requirements-x11.html for more information about the dependencies.

Rgds, Steven