warnings in ProjectCenter and GNUstep detect

[Riccardo Mottola]

Hi,

I wondered about some warnings in ProjectCenter and found out that they 
are derived from the redefinition of some typical defines and macros in 
an macos comaptibility list of defines.

Headers/ProjectCenter/PCDefines.h

Currently that section is enabled by:

#ifndef GNUSTEP_BASE_VERSION

but since no additional headers are imported before, this will clearly 
fail since the section will be always enabled even on gnustep.

Currently the gnustep base version is defined in the additions, but it 
does not make sense to import it if it is not required on mac, making 
the usage circular.

Is there a define which exists on mac and/or gnustep without importing 
anything?

Or, if not, by importing a header of plain Foundation?

Riccardo