Here is the code: #include "libpq-fe.h" #ifndef HDBUTIL #define HDBUTIL class DBConn { public: PGconn pg_conn; bool Connect(); bool Disconnect(); }; #endif ... and here is the make error: tux tb # make g++ -Wall -g -o0 -lpq -I/usr/include/postgresql/libpq-4 server.cpp db_util.cpp player.cpp -o tbserver.exe -L/usr/lib64 `wx-config -- cxxflags` `wx-config --libs` In file included from server.h:10, from server.cpp:24: db_util.h:11: error: field 'pg_conn' has incomplete type -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general