libpam0g-dev 0.99.7.1-5ubuntu6.4 (ia64 binary) in ubuntu hardy

 Contains C header files and development shared libraries libraries for
 libpam, the pluggable authentication modules, a suite of shared libraries
 that enable the local system administrator to choose how applications
 authenticate users.
 .
 PAM decouples applications from the authentication mechanism, making it
 possible to upgrade the authentication system without recompiling or
 rewriting the applications.