Another problem installing PHP under Solaris 8.0

Dear Friends: I have had another problem, after succesfully find flex package installed in this machine and make a link to a folder that is included in PATH. After ./configure, after the message that PHP was configured OK, following the instructions I write: make. This is the error that appears Making all in Zend make[1]: Entering directory '/usr/local/php-4.0.4pl1/Zend' /bin/sh../libtool --silent --mode=link gcc -g -02 -o libZend_c.la zend_language_scanner.lo zend_ini_scanner.lo ../libtool: ar: not found make[1]: *** [libZend_c.la] Error 1 leaving directory make[1]: *** [all- recursive] Error 1 I have looked at /php folder and exists a file called libtool. Anybody knows what is the problem? Thank you very much Emiliano.