make errors under solaris 8 on inet_aton

Hi everybody :-) I have to install PHP with GD library support. I configured like this : ./configure --with-apxs=/usr/local/apache/bin/apxs --with-mysql=/usr/local/mysql --with-gd --with-zlib It works fine ! Then, make stops at this errors (there are several previous errors, but the don't stop compilation) ext/standard/fsock.lo: In function `php_lookup_hostname': /home/pierrick/php/php-4.3.1/ext/standard/fsock.c:120: undefined reference to `inet_aton' collect2: ld returned 1 exit status make: *** [sapi/cli/php] Error 1 Any idea about what I should do ? ************************************************************************* Ce message et toutes les pieces jointes (ci-apres le "message") sont confidentiels et etablis a l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisee est interdite. Tout message electronique est susceptible d'alteration. La SOCIETE GENERALE et ses filiales declinent toute responsabilite au titre de ce message s'il a ete altere, deforme ou falsifie. ******** This message and any attachments (the "message") are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. E-mails are susceptible to alteration. Neither SOCIETE GENERALE nor any of its subsidiaries or affiliates shall be liable for the message if altered, changed or falsified. *************************************************************************