Solaris 7 -- iPlanet 4.1 problems

Please help. I'm installing php on a Solaris 7 server that is running iplanet 4.1. PHP Version 4.2.1 Configure: (I had more compiled in (gd, gdbm...) but error below occured so I cut it down) ./configure --with-nsapi=/usr/netscape/server4 --enable-libgcc \ --prefix=/usr --with-mysql=/usr/local/mysql --enable-track-vars The Error: bash-2.05# make Making all in Zend make[1]: Entering directory `/usr/share/src/php-4.2.1/Zend' /bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../main -D_POSIX_PTHREAD_SEMANTICS -D_POSIX_PT HREAD_SEMANTICS -D_REENTRANT -I../TSRM -g -O2 -pthreads -DZTS -prefer-pic -c -o zend_language_parser.lo `test -f zend_language_parser.c || echo './'`zend_language_parser.c In file included from zend_compile.h:24, from zend_language_parser.c:147: zend.h:55: unix.h: No such file or directory make[1]: *** [zend_language_parser.lo] Error 1 make[1]: Leaving directory `/usr/share/src/php-4.2.1/Zend' make: *** [all-recursive] Error 1 Thomas Finley tfinley@kc.devry.edu