Legacy applications and headers

[Marcus Müller]

I'm currently evaluating a migration path from Apple's WebObjects 4.5 
to a SOPE/GDL2 based solution. When porting GDL2 to MacOSX Xcode I 
found out that GDL2 often uses constructs like the following in its 
headers:

#ifndef NeXT_Foundation_LIBRARY
#include <Foundation/NSArray.h>
#include <Foundation/NSException.h>
#include <Foundation/NSZone.h>
#else
#include <Foundation/Foundation.h>
#endif

This is correct in a GNUstep environment, because some variables 
concerning library combos and runtime are always defined there.

Using Xcode on MacOSX  this is problematic because these variables are 
not defined automatically. Sometimes it's possible to set these in the 
respective build environments (Xcode, Makefiles), but this is a tedious 
step and sometimes, for larger legacy projects, error prone - as I 
currently experienced.

(For completeness' sake, in the example above, without the manual 
definition of NeXT_Foundation_LIBRARY the build will fail on MacOSX due 
to redefinitions of NSArray and the like.)


My request is to change these statements into:

#ifdef GNUSTEP_BASE_LIBRARY
#include <Foundation/NSArray.h>
#include <Foundation/NSException.h>
#include <Foundation/NSZone.h>
#else
#include <Foundation/Foundation.h>
#endif

It won't change anything in the GNUstep environment, however makes a 
bit difference when using this on MacOSX.


Cheers,

  Marcus

--
Marcus Mueller  .  .  .  crack-admin/coder ;-)
Mulle kybernetiK  .  http://www.mulle-kybernetik.com
Current projects: finger address@hidden