static linking library

Hi,
Currently I have postgresql DB setup on a sun machine.
I can compile( gcc -I/usr/local/pgsql/include sql.c -lpq ) and run a
testing query program on the same machine(which works fine),
but when I try to run the same program in different machine(without the
postgresql library) on the network connecting to the same DB, it failed.
So I tried to static link the library by doing the following steps(info
acquired from searching through the archives), but still have no success.
Anyone know where I am doing wrong? Thanks in advance.

gcc -I/usr/local/pgsql/include sql.c /usr/local/pgsql/lib/libpq.a

Undefined            first referenced
 symbol                 in file
socket
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
recv                    /usr/local/pgsql/lib/libpq.a(fe-misc.o)

gethostbyname
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
send
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
setsockopt
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
inet_aton
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
getsockopt
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
getsockname
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
connect
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status

gcc -I/usr/local/pgsql/include sql.c /usr/local/pgsql/lib/libpq.a -lsocket
-lnsl

Undefined            first referenced
 symbol                 in file
inet_aton
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status

gcc -I/usr/local/pgsql/include -static sql.c -lpq -lsocket -lnsl
Undefined            first referenced
 symbol                 in file
dlclose                 /usr/lib/libnsl.a(netdir.o)
inet_aton
/usr/local/pgsql/lib/libpq.a(fe-connect.o)
dlsym                    /usr/lib/libnsl.a(netdir.o)
dlopen                    /usr/lib/libnsl.a(netdir.o)
dlerror                 /usr/lib/libnsl.a(netdir.o)
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status

The headers I included in the sql.c are
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <libpq-fe.h>

Kun Lu