Unknown option specified in config file

Version: 2.14, 2.15
Source: nrpe-2.1[4|5].tar.gz
Platform: Centos 6.5 x64 (Nagios client)

Compile1: ./configure –enable-ssl –with-nrpe-user=nagios –with-nrpe-group=nagios –with-nagios-user=nagios –with-nagios-group=nagios –libexecdir=/opt/nagios/libexec/ –bindir=/opt/nagios/bin/ –prefix=/opt/nagios

Compile2: ./configure –enable-ssl –with-nrpe-user=nagios –with-nrpe-group=nagios –with-nagios-user=nagios –with-nagios-group=nagios –libexecdir=/opt/nagios/libexec/ –bindir=/opt/nagios/bin/ –prefix=/opt/nagios –with-cacert-file –with-privatekey-file

Conf file: /opt/nagios/etc/nrpe.cfg
log_facility=daemon
pid_file=/var/run/nrpe.pid
server_port=5666
nrpe_user=nagios
nrpe_group=nagios
allowed_hosts=127.0.0.1,10.0.194.9
cert_file=/opt/nagios/etc/server.crt # ient, /var/log/message reports unknown option when restart nrpe daemon:
Nov 17 11:30:30 localhost nrpe[1111]: Unknown option specified in config file ‘/opt/icinga/etc/nrpe.cfg’ – Line 92
Nov 17 11:30:30 localhost nrpe[1111]: Unknown option specified in config file ‘/opt/icinga/etc/nrpe.cfg’ – Line 93
Nov 17 11:30:30 localhost nrpe[1111]: Unknown option specified in config file ‘/opt/icinga/etc/nrpe.cfg’ – Line 94
Nov 17 11:30:30 localhost nrpe[1112]: Starting up daemon
Nov 17 11:30:30 localhost nrpe[1112]: Server listening on 0.0.0.0 port 5666.
Nov 17 11:30:30 localhost nrpe[1112]: Server listening on :: port 5666.
Nov 17 11:30:30 localhost nrpe[1112]: Listening for connections on port 0
Nov 17 11:30:30 localhost nrpe[1112]: Allowing connections from: 127.0.0.1,10.0.194.9

Question:
Do these parameters exist in the tarball? (i.e. –with-cacert-file –with-privatekey-file)

Hope to hear from you soon.