php with mime magic?

I'm trying to get php compiled with mime magic, and it doesn't appear to be working. Here's my phpinfo page, showing the parameters I've used to compile; it does show that I used '--enable-mime-magic' as instructed in the docs at php.net: http://horde.csd-bes.net/horde/test.php?mode=phpinfo (I need mime-magic for the latest Horde). My understanding is that there will be a section in phpinfo() displaying mime magic settings when everything is good. It is not there at this time. When I do the configure/make/make install, there are no complaints. Is this an extention that requires a seperate module file like mysql's mysql.so file? If so, it's no where on my system. I've googled to find something of the sort with no luck. I know also that I have to have a reference in php.ini pointing to the magic.mime file; my entry says: mime_magic.magicfile = "/usr/share/misc/magic.mime" and I have verified that the magic.mime file is actually in the location. How do I figure out what's wrong? Thanks