Hi,
I faced similar issue as discussed in "http://postgresql.1045698.n5.nabble.com/Fwd-DBD-Pg-on-HP-UX-11-31-64bit-td3305163.html".
(man xopen_networking - http://docstore.mik.ua/manuals/hp-ux/en/B2355-60130/xopen_networking.7.html) ... There are two ways to obtain X/Open Sockets functionality: * Method A is in compliance with X/Open compilation specification. * Method B slightly deviates from X/Open compilation specification. However, Method B allows a program to include both objects compiled to X/Open Sockets specification and objects compiled to BSD Sockets specification. ...
PostgreSQL support X/Open Sockets. Apache web server (2.2.15, /opt/hpws22/apache) and Perl (5.8.8, /opt/perl_64) are BSD Socket applications that are default with the OS. I tried Method B (It provides wrapper _xpg_ socket functions that allows using X/Open socket objects and BSD socket objects in the same binary) to build PostgreSQL 9.1 code, I LD_PRELOAD the generated libpq binary, without any other change both perl and apache work fine with postgresql now,and it is easy to implement too. We just need to build the source code with "-D_XOPEN_SOURCE=600 -D_HPUX_ALT_XOPEN_SOCKET_API" and link binary with libc. PFA patch. Thanks.
Best Regards,Muhammad Asif Naeem