The GNUstep makefile package is used as a build and runtime environment for SKYRiX applications. The major advantage of gstep-make is that it can build Objective-C based projects on almost any platform (from Linux to Windows) without requiring the developer to know about the complicated compiler options for producing shared libraries or loadable modules.
Building on MacOSX requires several preparations. Please check the
Porting OGo to MacOSX pages first.