Help with sudo problem

[Roberto Quezada Aste]

Hi everybody.
I just downloaded version 1.6.3p5 of sudo for sun 
solaris and installed it on a solaris 2.5.1 running on
a sparc server.
I made the installation doing exactly as the INSTALL 
file said, that is :
Login as root
type make install.
The make finished ok, and everything went to the right 
directories, however, when I try to run sudo, I get the 
following message 
ld.so.1: sudo: fatal: libpam.so.1: open failed: No such 
file or directory

Can someone help me with this??

Thanks a lot

Roberto.