zabbix 1.6.4 + pg problem: undefined reference to `PQexec'

[noname]

Configure successfully:
./configure --enable-server --with-pgsql --with-net-snmp --with-libcurl --prefix=/opt/zabbix

Configuration:

Detected OS: linux-gnu
Install path: /opt/zabbix
Compilation arch: linux

Compiler: gcc
Compiler flags: -g -O2 -I/usr/include/pgsql -I/usr/include/rpm -I/usr/include/gdbm -I/usr/lib/perl5/i386-linux/CORE -I. -I/usr/include

Enable server: yes
With database: PostgreSQL
WEB Monitoring via: cURL
Native Jabber: no
SNMP: net-snmp
IPMI: no
Linker flags: -L/usr/lib -lpq -lcurl -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto
Libraries: -lm -lresolv -lcurl -lnetsnmp

Enable proxy: no

Enable agent: no

LDAP support: no
IPv6 support: no

************************************************** *********
* Now run 'make install' *
* *
* Thank you for using ZABBIX! *
* <http://www.zabbix.com> *
************************************************** *********

Make install failed:

gcc -DZABBIX_DAEMON -g -O2 -I/usr/include/pgsql -I/usr/include/rpm -I/usr/include/gdbm -I/usr/lib/perl5/i386-linux/CORE -I. -I/usr/include -L/usr/lib -lpq -lcurl -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto -o zabbix_server zabbix_server-actions.o zabbix_server-operations.o zabbix_server-events.o zabbix_server-zlog.o zabbix_server-server.o alerter/libzbxalerter.a dbsyncer/libzbxdbsyncer.a discoverer/libzbxdiscoverer.a pinger/libzbxpinger.a poller/libzbxpoller.a housekeeper/libzbxhousekeeper.a timer/libzbxtimer.a trapper/libzbxtrapper.a nodewatcher/libzbxnodewatcher.a utils/libzbxutils.a httppoller/libzbxhttppoller.a watchdog/libzbxwatchdog.a escalator/libzbxescalator.a ../../src/libs/zbxsysinfo/libzbxserversysinfo.a ../../src/libs/zbxsysinfo/linux/libspecsysinfo.a ../../src/libs/zbxsysinfo/common/libcommonsysinfo.a ../../src/libs/zbxsysinfo/simple/libsimplesysinfo.a ../../src/libs/zbxlog/libzbxlog.a ../../src/libs/zbxnix/libzbxnix.a ../../src/libs/zbxsys/libzbxsys.a ../../src/libs/zbxconf/libzbxconf.a ../../src/libs/zbxemail/libzbxemail.a ../../src/libs/zbxsms/libzbxsms.a ../../src/libs/zbxdbhigh/libzbxdbhigh.a ../../src/libs/zbxdb/libzbxdb.a ../../src/libs/zbxdbcache/libzbxdbcache.a ../../src/libs/zbxcommon/libzbxcommon.a ../../src/libs/zbxcrypto/libzbxcrypto.a ../../src/libs/zbxcomms/libzbxcomms.a ../../src/libs/zbxjson/libzbxjson.a ../../src/libs/zbxserver/libzbxserver.a ../../src/libs/zbxicmpping/libzbxicmpping.a -lcurl -lnetsnmp -lm -lresolv
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_vselect':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:724: undefined reference to `PQexec'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:733: undefined reference to `PQresultStatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:744: undefined reference to `PQntuples'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:735: undefined reference to `PQresultErrorMessage'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:735: undefined reference to `PQresultStatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:735: undefined reference to `PQresStatus'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_fetch':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:604: undefined reference to `PQnfields'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:611: undefined reference to `PQgetisnull'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:617: undefined reference to `PQgetvalue'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:618: undefined reference to `PQftype'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `PG_DBfree_result':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:560: undefined reference to `PQclear'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_insert_id':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:817: undefined reference to `PQgetvalue'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_vexecute':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:467: undefined reference to `PQexec'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:474: undefined reference to `PQresultStatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:476: undefined reference to `PQresultErrorMessage'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:476: undefined reference to `PQresultStatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:476: undefined reference to `PQresStatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:488: undefined reference to `PQclear'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:486: undefined reference to `PQntuples'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_connect':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:128: undefined reference to `PQsetdbLogin'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:133: undefined reference to `PQstatus'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:128: undefined reference to `PQsetdbLogin'
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:135: undefined reference to `PQerrorMessage'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_close':
/opt/zabbix-1.6.4/src/libs/zbxdb/db.c:53: undefined reference to `PQfinish'
collect2: выполнение ld завершилось с кодом возврата 1
make[3]: *** [zabbix_server] Ошибка 1
make[3]: Leaving directory `/opt/zabbix-1.6.4/src/zabbix_server'
make[2]: *** [install-recursive] Ошибка 1
make[2]: Leaving directory `/opt/zabbix-1.6.4/src/zabbix_server'
make[1]: *** [install-recursive] Ошибка 1
make[1]: Leaving directory `/opt/zabbix-1.6.4/src'
make: *** [install-recursive] Ошибка 1

What's wrong?

[noname]

strange results?

But this command work correctly:

gcc -DZABBIX_DAEMON -g -O2 -I/usr/include/pgsql -I/usr/include/rpm -I/usr/include/gdbm -I/usr/lib/perl5/i386-linux/CORE -I. -I/usr/include -L/usr/lib -lpq -lcurl -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto -lcrypto -lnetsnmp -lcrypto -lm -lcrypto -lwrap -lcrypto -o zabbix_server zabbix_server-actions.o zabbix_server-operations.o zabbix_server-events.o zabbix_server-zlog.o zabbix_server-server.o alerter/libzbxalerter.a dbsyncer/libzbxdbsyncer.a discoverer/libzbxdiscoverer.a pinger/libzbxpinger.a poller/libzbxpoller.a housekeeper/libzbxhousekeeper.a timer/libzbxtimer.a trapper/libzbxtrapper.a nodewatcher/libzbxnodewatcher.a utils/libzbxutils.a httppoller/libzbxhttppoller.a watchdog/libzbxwatchdog.a escalator/libzbxescalator.a ../../src/libs/zbxsysinfo/libzbxserversysinfo.a ../../src/libs/zbxsysinfo/linux/libspecsysinfo.a ../../src/libs/zbxsysinfo/common/libcommonsysinfo.a ../../src/libs/zbxsysinfo/simple/libsimplesysinfo.a ../../src/libs/zbxlog/libzbxlog.a ../../src/libs/zbxnix/libzbxnix.a ../../src/libs/zbxsys/libzbxsys.a ../../src/libs/zbxconf/libzbxconf.a ../../src/libs/zbxemail/libzbxemail.a ../../src/libs/zbxsms/libzbxsms.a ../../src/libs/zbxdbhigh/libzbxdbhigh.a ../../src/libs/zbxdb/libzbxdb.a ../../src/libs/zbxdbcache/libzbxdbcache.a ../../src/libs/zbxcommon/libzbxcommon.a ../../src/libs/zbxcrypto/libzbxcrypto.a ../../src/libs/zbxcomms/libzbxcomms.a ../../src/libs/zbxjson/libzbxjson.a ../../src/libs/zbxserver/libzbxserver.a ../../src/libs/zbxicmpping/libzbxicmpping.a -lcurl -lnetsnmp -lm -lresolv -lpq

[noname]

and solution?

./src/zabbix_server/Makefile:

154 string:
- LIBS = -lm -lresolv
+ LIBS = -lm -lresolv -lpq

I don't know why is happening so.
I would be grateful for the comments.