To build QtSql, run the following commands (assuming that qtsql.tar.gz is in
your current working directory. 

tar xfvz qtsql.tar.gz
cd qtsql
qmake
make

The binary, called qtsql and can be run from its current location. The binary will work 
equally well from a different location (such as /bin for example). No supporting files 
are required.
