[SR-Users] Kamailio Installation

Hello Community, I am new to Kamailio, and this list as well. I am trying to install Kamailio 3.1.2, but I am getting too many errors. I have fixed some but still not getting the way. I am using Red Hat Enterprise Linux (RHEL) 5, and /usr/local directory. When I ran the following command: make group_include="standard standard-dep mysql" include_modules="carrierroute peering" install it prompted not found error for the file docbookx.dtd, I found it (modules/auth/auth.xml, and modules_s/acc_syslog/acc_syslog.xml) and fixed it as it was errorenous URL location. For reference earlier it was http://www.oasis-open.org/docbookid/id/g/4.5/docbookx.dtd, which I changed to http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd. Now when I run the previous command again, I am getting the follwing errors: *nsgmls:<URL>http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd:116:17:E: "X20AC" is not a function name* If I ignore this, and continue, I am not able to find the "sip-router" service in /etc/init.d. The entire errors is attached here. Please help me solve the issue. TIA Suresh