When installing a configuring Subversion to work through Apache, you might get an error like this when attempting to start up httpd:

Cannot load /etc/httpd/modules/mod_dav_svn.so into server: /etc/httpd/modules/mod_dav_svn.so: undefined symbol: dav_xml_get_cdata

Please note! Some people have indicated that this is because Apache wasn’t configured with DAV support when it was compiled on your distro. The answer might be a lot simpler than that.

Garrett Rooney noted that it might be as simple as just making sure that mod_dav is loaded before loading mod_dav_svn! I was experiencing this error, and a simple rearrangement of my LoadModule commands in httpd.conf fixed it.