PHP4.0 Compile problem on Solaris NSAPI for NES

Is it just not possible to compile PHP4.0 for Netscape Enterprise Server as
an NSAPI module.
I'm running Sun Solaris 2.6 NES 3.6 and PHP 4.0

I used the following flags in the configure:

--enable-discard-path
--enable-magic-quotes
--enable-track-vars
--with-openssl
--with-oracle
--enable-trans-sid
--enable-memory-limit
--enable-versioning
--enable-sysvshm
--with-nsapi=path/to/my/netscape/server/root
I even tried it with the --enable-experimental-zts, cause someone suggested
it.

The following is copied from my terminal.

I gave it a try and I didn't even get past the Zend dir.

Making all in Zend
/bin/sh ../libtool --silent --mode=compile
+ -DHAVE_CONFIG_H -I. -I. -I..   -D
_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -DXML_BYTE_ORDER=21 -I../TSRM -DTHREAD
=1
-pthreads -c zend-scanner-cc.cc
/bin/sh ../libtool --silent --mode=link c++  -pthreads  -o libZend_cc.la
zend-
scanner-cc.lo
/bin/sh ../libtool --silent --mode=compile
c -DHAVE_CONFIG_H -I. -I. -I..   -D
_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -DXML_BYTE_ORDER=21 -I../TSRM -DTHREAD
=1
-g -O2 -pthreads  -Wall -c zend-parser.c
/usr/lib/bison.simple:153: conflicting types for `zendparse'
zend_globals_macros.h:37: previous declaration of `zendparse'
/usr/lib/bison.simple: In function `zendparse':
/usr/lib/bison.simple:219: number of arguments doesn't match prototype
/usr/lib/bison.simple:153: prototype declaration
*** Error code 1
make: Fatal error: Command failed for target `zend-parser.lo'
Current working directory /raidb4/temp/php-4.0.0/Zend
*** Error code 1
make: Fatal error: Command failed for target `all-recursive'

Anybody know how to make it work or is this not possible at present

-Mark