The mod_dav module is already linked to your ~/www/modules/ directory. To use it, simply uncomment the following
line in your /www/conf/httpd.conf file and run restart_apache:
#LoadModule dav_module libexec/mod_dav.so
You will also need to configure where the DAV files are and who can access them. This is an example of what you would need to add
to your /www/conf/httpd.conf file:
<IfModule mod_dav.c>
DAVLockDB /var/db/DAVLock
DavMinTimeout 600
Alias /upload /usr/local/etc/htdocs/davhome
<Location /upload>
DAV On
order deny,allow
Deny from all
Allow from YOUR-COMPANY.DOMAIN
</Location>
</IfModule>
You can find more information on configuring mod_dav at the WebDAV website
module documentation section: