安装完apache - 2.0.59和svn 1.4.4后，起动apache时报错,求高手指点

apache下面两个配置选项都报错
1 ./configure --enable-module=so --enable-dav --enable-dav-fs --enable-so
2 ./configure --enable-dav --enable-so

svn 的配置选项:
./configure --with-apxs=/usr/local/apache2/bin/apxs --with-apr=/usr/local/apache2 --with-apr-util=/usr/local/apache2



报的错误是:
Syntax error on line 232 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: svn_repos_fs_revision_proplist


求高手指点!!!!!

undefined symbol
不负责的说一句,应该是系统上少了库文件之类的.