I start again from the very beginning, and find there's a warning in "make", is that the reason? What can I do?
...
/bin/sh /src/source/php-4.0.0/libtool --silent --mode=link gcc -g -O2 -Wall   -o libphp4.la -rpath /src/source/php-5.0.0/libs -avoid-version -L/usr/local/lib  -R /usr/local/lib main.lo internal_functions.lo snprintf.lo php_sprintf.lo config uration-parser.lo configuration-scanner.lo safe_mode.lo fopen-wrappers.lo php_re alpath.lo alloca.lo php_ini.lo SAPI.lo rfc1867.lo hp_content_types.lo strlcpy.lo strlcat.lo mergesort.lo reentrancy.lo php_variables.lo php_ticks.lo php_virtual_cwd.lo Zend/libZend.la sapi/apache/libsapi.la regex/libregex.la ext/db/libdb.la ext/pcre/libpcre.la ext/pdf/libpdf.la ext/posix/libposix.la ext/session/libsession.la ext/standard/libstandard.la  -lpam -lpdf -ltiff -lpng -ljpeg -lm -lcrypt -lnsl -lz -L/usr/local/lib -ljpeg -L/usr/local/lib -lpng -L/usr/local/lib -ltiff

*** Warning: inter-library dependencies are not known to be supported.
*** All declared inter-library dependencies are being dropped.
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.

Please verify that it?s still happening using the latest version of PHP (release 4.0.1pl2 or CVS).

Is this still a problem?
And if not how did you fix it?

--Jani

No feedback. And the bug is in Apache which doesn't accept .sl as suffix.
Please file a bug report at http://bugs.apache.org 
or compile PHP4 as static module into apache.

--Jani