qextserialport installation problems

[vani.pv]

Hi .
I need serial port interfacing for my application.
So i have download qextserialport 1.2 beta1.tar.gz .
i follow the installation procedure mentioned in the readme file.while qmake it is showing error.
installation procedures saying that i need to copy the extracted file in some other locations .but my file not getting copied from the current dictory to any filesystem dictories.

my downloaded file is in download directory.
can any one tell any changes and do i need to do any configurations for installation?

thnaks

[kuzulis]

Instead of qextserialport try QtSerialPort