configuration of makefiles

[Rob Searles]

 I am trying to compile on a RedHAT 6.0 server and am having trouble
understanding how to edit the makefiles.  I have PAM support but am not
using shadow passwords.  Where do I add the -DUSE_PAM (and -lpam -ldl) in
the /sys/linux/Makefile?  What is the source directory for PAM in the main
Makefile?  Also, How do I know if I am using libc.so.5?

Thanks
Rob