Sharing project files between windows and linux

Hello,

I'm a new to GPS (and more or less to Ada).
I would like to know if GPS' project files are compatible between 
Windows and Linux.

For instance suppose that I create a project under Windows which depends 
on another project. Can I use the same project files under Linux 
(provided that I have the same development tree)?

The main obstacle is probably file separator. Is there a tool to change 
that?

Thanks in advance,
Mathieu