Unable to find some of the files while installing PAM :: need help in setting PAM on Linux

Hello , Im trying to install PAM on red hat linux . I want to use with PHP. Im getting error : [root@localhost PAM]# pear install pam-1.0.3.tgz PHP Warning: PHP Startup: Unable to load dynamic library '* /usr/lib/php/modules/pam.so*' - */usr/lib/php/modules/pam.so*: cannot open shared object file: No such file or directory in Unknown on line 0 /tmp/glibctestwclmkE:1:22: *error: features.h:* No such file or directory 3 source files, building running: phpize Configuring for: PHP Api Version: 20041225 Zend Module Api No: 20050922 Zend Extension Api No: 220051025 building in /var/tmp/pear-build-root/pam-1.0.3 running: /tmp/tmpePKRfE/pam-1.0.3/configure checking for egrep... grep -E checking for a sed that does not truncate output... /bin/sed checking for gcc... no checking for cc... no checking for cc... no checking for cl... no configure: error: no acceptable C compiler found in $PATH See `config.log' for more details. ERROR: `/tmp/tmpePKRfE/pam-1.0.3/configure' failed Can anyone help me and send me the pam.so file. Even if anyone has hands on setting PAM for PHP on linux.Im unable to do it. Plz help. -- *Regards,* *Vishnu G Singhal* *If You want to walk fast ..walk alone ,but if you want to walk far walk together - Ratan Tata *