apache libapr is error with mod_authz_svn

Hi:
I use redhat AS 3.0, rpm install apache2 2.0.52,svn 1.1.1,
svnserver 1.1.1ĄŁEdit http.conf like this:

LoadModule dav_svn_module modules/mod_dav_svn.so

It is ok.

when I use mod_auth:

LoadModule mod_authz_svn modules/mod_authz_svn.so

when apache2 start, error message is :
Syntax error on line 114 of /usr/local/apache2/conf/httpd.conf:
Can't locate API module structure `mod_authz_svn' in file /usr/local/
apache2/modules/mod_authz_svn.so: /usr/local/apache2/lib/libapr-0.so.0:
undefined symbol: mod_authz_svn

Using google, I can't find way.

-- 
luojie <flytod@21cn.com>
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