Linux – why won’t php 5.3.3 compile libphp5.so on redhat ent

I'm trying to upgrade to php 5.3.3 from php 5.2.13. However, the apache module, libphp5.so will not be compiled. Below is a output I got along with the configure options I used. The configure statement is a reduced version of what I normally use.

==========

'./configure' '–disable-debug' '–disable-rpath' '–with-apxs2=/usr/local/apache2/bin/apxs'

…

** ** ** Warning: inter-library dependencies are not known to be supported.
** ** ** All declared inter-library dependencies are being dropped.

** ** ** Warning: libtool could not satisfy all declared inter-library
** ** ** dependencies of module libphp5. Therefore, libtool will create
** ** ** a static module, that should work as long as the dlopening
** ** ** application is linked with the -dlopen flag.
copying selected object files to avoid basename conflicts…
Generating phar.php
Generating phar.phar
PEAR package PHP_Archive not installed: generated phar will require PHP's phar extension be enabled.
clicommand.inc
pharcommand.inc
directorytreeiterator.inc
directorygraphiterator.inc
invertedregexiterator.inc
phar.inc

Build complete.
Don't forget to run 'make test'.

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php 5.2.13 recompiles just fine so something is up with 5.3.3.

Any help would be greatly appreciated!!