Help in configuring PAM with PHP

Hello , Can anyone please help me in configuring PHP with PAM on Red Hat Linux. [root@localhost PAM]# pecl install *pam-1.0.3.tgz* --with-pam=. parsePackageName(): invalid package name "--with-pam=." in "--with-pam=." invalid package name/package file "--with-pam=." Cannot initialize '--with-pam=.', invalid or missing package file Package "--with-pam=." is not valid 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/tmpDkjJnU/pam-1.0.3/configure checking for egrep... grep -E checking for a sed that does not truncate output... /bin/sed checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking whether gcc and cc understand -c and -o together... yes checking if compiler supports -R... no checking if compiler supports -Wl,-rpath,... yes checking build system type... i686-redhat-linux-gnu checking host system type... i686-redhat-linux-gnu checking target system type... i686-redhat-linux-gnu checking for PHP prefix... /usr checking for PHP includes... -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext checking for PHP extension directory... /usr/lib/php/modules checking for PHP installed headers prefix... /usr/include/php checking for re2c... no configure: WARNING: You will need re2c 0.9.11 or later if you want to regenerate PHP parsers. checking for gawk... gawk checking for PAM support... yes, shared *configure: error: install the the PAM library or use --with-pam=DIR to specify the location.* ERROR: `/tmp/tmpDkjJnU/pam-1.0.3/configure' failed -- *Regards,* *Vishnu G Singhal* *If You want to walk fast ..walk alone ,but if you want to walk far walk together - Ratan Tata *