Lazarus package for the FCL Interbase components You need to install - interbase - or firebird 1.0.x - or firebird 1.5 and create a link /usr/lib/libgds.so -> /usr/local/firebird/lib/libfbclient.so For example: ln -s /usr/local/firebird/lib/libfbclient.so /usr/lib/libgds.so