External module

I think I'd better ask for some help again, before I tear out what little is left of my hair. I've had a working extension module since early January. Every time I update my PHP4 source tree and try to rebuild, I have problems getting the module's functions to show up in PHP. Here's what I did this time: Get the source into /usr/src/php4/current cd /usr/src/php4/current/ext ./ext_skel loco cd .. ./buildconf edit /usr/src/php4/current/ext/loco/config.m4 leaving the section that tests for --with-loco run my configure script that includes --with-loco make My loco.c is getting compiled and linked - I can see it there make install httpd stop httpd start phpinfo() shows me that the module I've just built is the one that is running. The functions defined in loco.c are not defined. This used to work just fine .... I'm really perplexed .... what has changed??? TIA, Paul