__weak definition and problems with Obj-C

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi,

when using current NetBSD and compiling GNUstep (current objective-c 
stuff from svn, not packages) I get for about any obj-c file these 
redefinition warnings:

 Compiling file main.m ...
In file included from 
/System/Library/Headers/GNUstepBase/GSVersionMacros.h:219:0,
                 from /System/Library/Headers/AppKit/AppKit.h:32,
                 from main.m:25:
/System/Library/Headers/GNUstepBase/GSConfig.h:417:0: warning: "__weak" 
redefined [enabled by default]
 #    define __weak
 ^
In file included from /usr/include/sys/cdefs.h:60:0,
                 from /usr/include/inttypes.h:35,
                 from /System/Library/Headers/GNUstepBase/GSConfig.h:154,
                 from 
/System/Library/Headers/GNUstepBase/GSVersionMacros.h:219,
                 from /System/Library/Headers/AppKit/AppKit.h:32,
                 from main.m:25:
/usr/include/sys/cdefs_elf.h:68:0: note: this is the location of the 
previous definition
 #define __weak __attribute__((__weak__))
 ^

on 6.1.5 instead everything works fine there. On 6.1.5, I see this in 
the header file instead:

#define __weak_reference(sym)   __attribute__((__weakref__(#sym)))


This change looks bad, it would make NetBSD incompatible with Obj-c 
apparently! I asked on the gnustep list and the reply was to report a bug.
Since it works in the 6.1.5 release (and did for all versions I have run 
GNUstep on, so since 1.6 for sure...), I write here first.

Riccardo