Before building the Qt library, the Qt SQL module can be enabled for specific databases using 'configure'. 'configure' is located at the top of your QTDIR. Specific databases drivers can be enabled using one of the following options: ./configure [-qt-sql-] [-plugin-sql-] or disabled using the following option: ./configure [-no-sql-] Where is the name of the driver, for example 'psql'. This will configure the Qt library to compile the specified driver into the Qt lib itself. For example, to build the PostgreSQL driver directly into the Qt library, configure Qt like this: ./configure -qt-sql-psql In addition, you may need to specify an extra include path, as some database drivers require headers for the database they are using, for example: ./configure -qt-sql-psql -I/usr/local/include If instead you need to build the PostgreSQL driver as a dynamically loaded plugin, configure Qt like this: ./configure -plugin-sql-psql To compile drivers as dynamically loaded plugins, see the QTDIR/plugins/src/sqldrivers directory. Use 'configure -help' for a complete list of configure options. See the Qt documentation for a complete list of supported database drivers.