Posting to this old thread just to get this in the aggregate knowledge base, i've not seen it explicitly mentioned in the monastery. When compiling the postgresql dbd driver you need to be able to reference the lib and include directories of a built postgresql system. i think the directories could be on a remote system accessed through a nfs or smbfs mount point, but would generally be on the host machine. note that the postgresql installation need not be active and that the libraries with which the client is compiled can be removed as soon as it is compiled. to restate, when the libpg-fe.h error is received the postgresql source will have to be built, installed, and the location of the lib and include directories referenced in the POSTGRES_LIB and POSTGRES_INCLUDE environment variables.