need help with compiling apc-cache

Hi I'm completely desperate. it looks i'm missing something when i try to install the cache on my server :-[ maybe anyone can have a quick look and point me to my error. Thanks in advance.. i try to install APC on my redhat 7.1 server. I use apache apache_1.3.19 and built php in it. ( is that possible at all??? ) what i do is : copy files to /usr/src/php4.0.6/ext/apc cd /usr/src/php4.0.6/ make clean ./configure --enable-apc --with-config-file-path=/etc --disable-debug --with-exec-dir=/usr/bin --with-regex=system --with-gettext --with-gd --with-jpeg-dir=/usr --with-png --with-zlib --enable-magic-quotes --enable-sockets --enable-track-vars --enable-ftp --with-mysql --with-xml --enable-trans-sid --with-apache=../apache_1.3.19 make make install cd ../apache_1.3.19 ./configure --prefix=/www --activate-module=src/modules/php4/libphp4.a make edit php.ini : apc.mode = mmap apc.cachedir = /tmp then i stop my webserver, copy the new httpd into /www/bin , start it again. all i get is : Call to undefined function: apc_cache_index() what am i missing???? or does it neither work as static build in or with php 4.0.6 ???? thanks Sebastian