Problem buidling PHP-4.0.3pl1 on HP-UX 10.20

Hi, I try to build PHP-4.0.3pl1 as a DSO on HP-UX 10.20 with Apache 1.3.12. Except from the fact that apxs script uses the extention .so for shared libraries and PHP is configured to use the extention .sl (on hp-ux), the 'make install' gives no errors. When I try to restart Apache, though, there seems to be a problem in loading the libphp4.so module. 'apachectl configtest' reports the following errors: /usr/lib/dld.sl: Unresolved symbol: __umoddi3 (code) from /opt/apache/lib/modules/libphp4.so /usr/lib/dld.sl: Unresolved symbol: DL_UNLOAD (code) from /opt/apache/lib/modules/libphp4.so Syntax error on line 239 of /opt/apache/etc/httpd.conf Cannot load /opt/apache/lib/modules/libphp4.so into server: No such file or directory The last line seems not to be valid, the file /opt/apache/lib/modules/libphp4.so does exist ! Can somebody give me a clue ?!? Thanks in advance ! Regards, Ronny