install to unix... hastles

Hiya, I'm new to installing php onto unix i can get the ./configure command to run with out error (well any that are obvious) but when i do the make it comes up with # make Making all in Zend make[1]: Entering directory `/usr/local/php-4.2.1/Zend' /bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../main -D_POSIX_PTHREAD_SEMANTICS -I../TSRM -g -O2 -prefer-non-pic -static -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:55:19: unix.h: No such file or directory make[1]: *** [zend_language_parser.lo] Error 1 make[1]: Leaving directory `/usr/local/php-4.2.1/Zend' make: *** [all-recursive] Error 1 now i understand that it can't find unix.h and am assuming that this is why it doesn't work ... does any one have any ideas for me .... php ver is 4.2.1 for now... though will upgrade to 4.2.2 soon.. Cheers Peter "the only dumb question is the one that wasn't asked"