Thanks John, I solved linking libpq.so.5 into my library. FDO 3.4 binaries don't need this trick. Vito -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/FDO-3-5-PostgreSQL-Provider-tp5176817p5181308.html Sent from the FDO Users mailing list archive at Nabble.com.