the port building error....

zabbix-server-error.log

cc -DZABBIX_DAEMON -O2 -pipe -DLDAP_DEPRECATED -fno-strict-aliasing    -I/usr/local/include    -I/usr/local/include -I/usr/local/lib/perl5/5.10.1/mach/CORE -I/usr/include -I. -I/usr/local/include  -I/usr/local/include  -I/usr/local/include -I/usr/local/include  -L/usr/local/lib -lpq -L/usr/local/lib -liksemel    -L/usr/local/lib -lcurl -L/usr/local/lib -lssl -lcrypto -lldap -lz  -L/usr/lib -lm -lkvm -ldevstat -L/usr/local/lib -lnetsnmp -lelf -lssp_nonshared -lcrypto  -L/usr/lib -lm -lkvm -ldevstat -L/usr/local/lib -lnetsnmp -lelf -lssp_nonshared -lcrypto -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib -lldap -llber  -L/usr/local/lib -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  dbconfig/libzbxdbconfig.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  proxypoller/libzbxproxypoller.a  ../../src/libs/zbxsysinfo/libzbxserversysinfo.a  ../../src/libs/zbxsysinfo/freebsd/libspecsysinfo.a  ../../src/libs/zbxsysinfo/common/libcommonsysinfo.a  ../../src/libs/zbxsysinfo/simple/libsimplesysinfo.a  ../../src/libs/zbxlog/libzbxlog.a  ../../src/libs/zbxdbcache/libzbxdbcache.a  ../../src/libs/zbxmemory/libzbxmemory.a  ../../src/libs/zbxalgo/libzbxalgo.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/zbxcommon/libzbxcommon.a  ../../src/libs/zbxcrypto/libzbxcrypto.a  ../../src/libs/zbxcomms/libzbxcomms.a  ../../src/libs/zbxcommshigh/libzbxcommshigh.a  ../../src/libs/zbxjson/libzbxjson.a  ../../src/libs/zbxserver/libzbxserver.a  ../../src/libs/zbxicmpping/libzbxicmpping.a  ../../src/libs/zbxdbhigh/libzbxdbhigh.a  ../../src/libs/zbxdb/libzbxdb.a  ../../src/libs/zbxjabber/libzbxjabber.a  -liksemel -lcurl  -lnetsnmp  -lssh2 -lkvm -lm -ldevstat   -liconv
../../src/libs/zbxnix/libzbxnix.a(fatal.o)(.text+0xe2): In function `print_fatal_info':
: undefined reference to `backtrace'
../../src/libs/zbxnix/libzbxnix.a(fatal.o)(.text+0xf6): In function `print_fatal_info':
: undefined reference to `backtrace_symbols'
*** Error code 1