I want to have preprocessor definitions for each machine with Xcode, so no matter what project I open certain definitions will be there. Say in first office I want to have
#define SERVER_IP 10.20.10.20
in other office
#define SERVER_IP 192.168.10.20
etc...
So the projects are exactly same, just Xcode environment would provide those definitions to the project. Is there such possibility in Xcode?