How comile pam modules

[Matt Sellers]

Im trying to compile a single pam module via this.

g++ -shared pam_permit.c -o pam_permit.so

The problem i keep seing in syslog everytime I run the module.

syslog:

Dec 5 16:32:53 linuxlab2 su: PAM unable to 
dlopen(/lib/security/$ISA/pam_permit.so)
Dec 5 16:32:53 linuxlab2 su: PAM [dlerror: 
/lib/security/../../lib/security/pam_permit.so: undefined symbol: 
_Z12pam_get_userP10pam_handlePPKcS2_]
Dec 5 16:32:53 linuxlab2 su: PAM adding faulty module: 
/lib/security/$ISA/pam_permit.so

Anybody got any ideas, im trying to write my own pam module to do nice 
things, and this is my practice.

:-)
-matt