Code compiled in different computers with different behavior

Hi,

I have been developing software with arduino ide 1.6.9 (for nano) in my desktop with fedora installed.
The code that I have today, when I compile it in my desktop i don't have any warnings and after flashing arduino, it has a nice behavior and does what is expected.

I needed to work outside my home and configured a laptop (with lmde installed ) with the same arduino ide, and i have warnings about deprecated conversion from string constant to 'char*' and after flashing arduino, it has a strange behavior and doesn't do what is expected.

Maybe you could help me trying to understand what may be causing this strange behavior.

Kind Regards

Same rev of the IDE on both computers? Are the same libraries loaded?

Yes, I used the same tar.gz downloaded.

How can I see the Libraries that are loaded in each case?

Thanks.