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Install QT 4.6.2 on Ubuntu

I was installing QT 4.6.2 to Ubuntu I got the below error -
Qt configure error: Basic XLib functionality test failed
Here is what I did to get rid of the issue.
1. Install libpcap files with "]$ sudo apt-get install libpcap0.8-dev" this library was missing

2. Then install few more libraries which were missing as this was a new ubuntu installation I was working on.
]$ sudo apt-get install libx11-dev libfreetype6-dev libavahi-gobject-dev libSM-dev libXrender-dev libfontconfig-dev libXext-dev

]$ ./configure
]$ make
]$ sudo make install


After this set the PATH
]$ PATH=/usr/local/<PATH_TO_QT>/qt4/bin:$PATH
]$ export PATH

Thats it !! .
Enjoy QT Development.
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