Compile problems iostream.h No such file or directory

Hi; Trying to figure this one out. Any help would be great. Here is my configure ops. >./configure --prefix=/usr/local/php --with-zeus=/usr/local/zeus --with-mysql=/usr/local/mysql --enable-libgcc --oldincludedir=/usr/local/include Stats ---------------------------------------------------------------------------- ---------------- Solaris 2.6 >pkginfo| grep GNU utility GNUaconf GNU autoconf 2.12 SPARC Solaris 2.6 utility GNUamake GNU automake 1.3 SPARC Solaris 2.6 utility GNUbison GNU bison 1.25 utility GNUgcc GNU gcc 2.7.2.3 SPARC Solaris 2.6 utility GNUlibstc GNU libstdc++ 2.8.1.1 SPARC Solaris 2.6 utility GNUmake GNU make 3.77 SPARC Solaris 2.6 utility GNUpatch GNU patch 2.5 SPARC Solaris 2.6 utility GNUplot GNU plot 3.5 SPARC Solaris 2.6 utility GNUtar GNU tar 1.12 SPARC Solaris 2.6 utility GNUzip GNU zip 1.2.4 SPARC Solaris 2.6 >make Making all in Zend make[1]: Entering directory `/infinet/src/php-4.0.0/Zend' /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 -g -O2 -c zend-scanner-cc.cc In file included from zend-scanner-cc.cc:241: FlexLexer.h:47: iostream.h: No such file or directory ./zend-scanner.l:53: fstream.h: No such file or directory ./zend-scanner.l:63: strstream.h: No such file or directory make[1]: *** [zend-scanner-cc.lo] Error 1 make[1]: Leaving directory `/infinet/src/php-4.0.0/Zend' make: *** [all-recursive] Error 1 grrr ...