trouble with mod_dav_svn

Hello.

I'm trying to experiment with subversion and use it for storing my code heap. But when I tried to make up an svn server,
  i've encountered a problem.

I've got HEADs of http-2.0.40, apr & apr-util, successfully built and installed apache. Then I fetched latest revision
of the subversion, i've lost the number, but it was like 2 hours ago.

It built fine, the only difference from INSTALL file recommendations is that I gave it --prefix=/usr/local/apache2

But the apache refuses to start when mod_dav_svn is uncommented in httpd.conf, saying:

Syntax error on line 184 of /usr/local/apache2/conf/httpd.conf:
Cannot load /usr/local/apache2/modules/mod_dav_svn.so into server: /usr/local/apache2/modules/mod_dav_svn.so: Undefined
symbol "ap_get_module_config"

where line 184 reads, obviously:

LoadModule dav_svn_module modules/mod_dav_svn.so

It puzzles me, because the function ap_get_module_config is the core api function of the apache2.

Maybe someone had encountered such thing before?

Miscellaneous info:

system: FreeBSD 4.6-RC3
httpd, apr, apr-util: checked out of cvs.apache.org around 14:00 GMT
httpd -l:
Compiled in modules:
   core.c
   mod_authn_file.c
   mod_authn_default.c
   mod_authz_host.c
   mod_authz_groupfile.c
   mod_authz_user.c
   mod_authz_default.c
   mod_auth_basic.c
   mod_include.c
   mod_deflate.c
   mod_log_config.c
   mod_env.c
   mod_setenvif.c
   prefork.c
   http_core.c
   mod_mime.c
   mod_dav.c
   mod_status.c
   mod_autoindex.c
   mod_asis.c
   mod_cgi.c
   mod_dav_fs.c
   mod_negotiation.c
   mod_dir.c
   mod_imap.c
   mod_actions.c
   mod_userdir.c
   mod_alias.c
   mod_so.c

-- 
./lxnt
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