Subversion apache2 nis authentication

I have installed subversion 1.5.5-1 on CentOS 4.4.

I followed http://www.yolinux.com/TUTORIALS/LinuxTutorialApacheAddingLoginSiteProtection.html#NIS

I followed all the steps except I downloaded and installed “Apache2-AuthenNIS-0.15” instead of “Apache-AuthenNIS-0.13”.

I added following in /etc/opt/CollabNet_Subversion/conf/httpd.conf.

# Code for nis authentication

AuthType Basic
AuthName “Enter your login ID:”
PerlAuthenHandler Apache2::AuthenNIS
PerlSetVar AllowAlternateAuth no
require valid-user

Now, svn configuration fails with the following error:

Stopping CollabNet Subversion: Syntax error on line 128 of /etc/opt/CollabNet_Subversion/conf/httpd.conf:
Invalid command ‘PerlAuthenHandler’, perhaps misspelled or defined by a module not included in the server configuration
Starting CollabNet Subversion: Syntax error on line 128 of /etc/opt/CollabNet_Subversion/conf/httpd.conf:
Invalid command ‘PerlAuthenHandler’, perhaps misspelled or defined by a module not included in the server configuration

When I try to install mod_perl2 (mod_perl-2.0.4):

cd mod_perl-2.0.4
perl Makefile.PL

Please provide a full path to ‘apxs’ executable
(press Enter if you don’t have it installed): /opt/CollabNet_Subversion/bin/apxs

[ error] Unable to open /opt/CollabNet_Subversion/include/ap_release.h: No such file or directory
[ error] Unable to determine server version, aborting.
[ error] Invalid MP_APXS specified?

I can not file /opt/CollabNet_Subversion/include directory in Collabnet’s installation.

Please help.