Recently, I attempted to install subversion on Centos6. Apache failed to start with this error:
mod_dav_svn.so undefined symbol: dav_register_provider
To fix this error simply add this in your httpd.conf:
LoadModule dav_module modules/mod_dav.so
Make sure you add the line above BEFORE these lines:
LoadModule dav_svn_module modules/mod_dav_svn.so LoadModule authz_svn_module modules/mod_authz_svn.so