Compiling for Mac OS 10.2 on Leopard & Intel

[Chad Armstrong]

Hello:

I'm working on a long-standing project that currently works as far  
back as Mac OS 10.2.  Is it possible to compile a program on Leopard  
and an Intel-based Mac that can also run on Mac OS 10.2?  My current  
tests allow me to run the currently compiled program as far back as  
Mac OS 10.3.9.  But when I ran a test on 10.2, the icon was the  
"generic application" icon, and it would not start properly.

Regards,

Chad Armstrong