Undefined _zlib_ptr_dtor_wrapper

Using NetBSD 2.0.2, and attempting to install php-5.0.4.

My configure statement is as follows:





./configure --enable-versioning --with-pear --enable-ctype --enable-dom --w
i
th-pcre-regex --enable-posix --enable-session --enable-simplexml --with-sqli
te --enable-tokenizer --enable-xml --enable-libxml --with-libxml-dir=/usr/pk
g --with-regex=php --enable-spl --with-regex=php --with-apxs2=/usr/pkg/sbin/
apxs

The configure command runs fine, and generates the makefiles and whatnot,
but when I execute the 'make' command, I recieve the following errors a
little bit into the make process:

ext/dom/php_dom.lo(.text+0x40ab): In function `dom_objects_set_class':
/var/tmp/php-5.0.4/ext/dom/php_dom.c:907: undefined reference to
`_zval_ptr_dtor
_wrapper'
ext/simplexml/simplexml.lo(.text+0x120a): In function `sxe_properties_get':
/var/tmp/php-5.0.4/ext/simplexml/simplexml.c:685: undefined reference to
`_zval_
ptr_dtor_wrapper'
ext/simplexml/simplexml.lo(.text+0x2310): In function `php_sxe_object_new':
/var/tmp/php-5.0.4/ext/simplexml/simplexml.c:1206: undefined reference to
`_zval
_ptr_dtor_wrapper'
*** Error code 1

Only seems to happen when I use libxml, which is installed. Any idea what is
cauing this, and how I can fix it?

Thanks,

Dan Labute