Hi, AuthCookie maintainer here.
Basically I wouldn't advise deploying mod_perl against httpd 2.4 at this time. There is still no official mod_perl release that supports apache 2.4. In addition, the authorization API has been completely rewritten in apache 2.4, which means that all of your authcookie subclasses will need to be updated as well. As Lathan has already mentioned, there is alpha support for this available in the git tree if you really want to try, but if I were you, I'd still with apache 2.2 at least until there is a stable mod_perl available for apache 2.4. Regards, Michael Schout