Apache dumps core when using php with mm

I want to use mm for session handling and as I haven't enabled it before my first action was to try to enable mm in php. apache configure: LD_SHLIB=ld ./configure --with-layout=OpenBSD --enable-module=rewrite --enable-module=so --enable-module=info --server-uid=www --server-g id=www php configure: EXTRA_LIBS='-ljpeg -lmm' LD_SHLIB=ld ./configure --prefix=/web/php --with-mysql --with-config-file-path=/web/php/lib --enable-trans-sid --enable-force-cgi-redirect --with-gd=/usr/local --with-jpeg-dir=/usr/local --with-xpm-dir=/usr/X11R6 --with-ttf --with-t1lib --enable-track-vars --enable-sockets --with-png-dir=/usr/local --with-zlib --with-zlib-dir=/usr --with-xmlrpc --with-expat-dir=/usr/local --with-mm=/usr/local --with-apxs The mm used is 1.1.3 installed from ports and when I installed it I ran 'make test' which gave +-MM-Library-Test-Suite-Summary---------------------------

| Library Version       : MM 1.1.3 (01-Jul-2000)
| Platform              : i386-unknown-openbsd3.1

| Memory Page Size Type : MM_VMPS_SYSCONF

| Shared Memory Type    : MM_SHMT_MMANON
| Semaphore Type        : MM_SEMT_FCNTL

| Maximum Segment Size : 67108864

| Test Suite            : Ok

+--------------------------------------------------------- I only rebuilt and installed php (simple make distclean && configure ... && make && sudo make install ). When attempting to start apache, apache dumped core and php logged this "PHP Fatal error: Unable to start session mm module in Unknown on line 0". Setting session.save_handler = files or mm doesn't change the result. My set up is Apache 1.3.27 with PHP 4.2.3 on OpenBSD 3.1. What should I do to get mm into a working php?