Unix program on Linux question

[Duane Attaway]

On Wed, 17 Dec 2003, Brian Densmore wrote:

> If I have a compiled x86 Unix program and no source is it possible to
> run this program in a Linux box? I would tend to think that it is
> possible, even if one needed to load some type of VM interfaces. For
> argument's sake let's say the Unix program was compiled for UnixWare on
> an Intel architecture.

What libraries have you linked to?  Is it going to run on the processor 
type is was compiled for?  Will it use the same directory structure and 
ports?  What type of executable was it linked as?  ELF, a.out, ...?