Re: Objective-C 2 on GNUstep?

[David Chisnall]

If you go to the front page of the GNUstep site, you will find a convenient 
link to the Obective-C 2 FAQ: http://wiki.gnustep.org/index.php/ObjC2_FAQ

Currently, GNUstep supports all of Objective-C 2 except garbage collection.  If 
you want to use the non-fragile ABI (which also provides fast proxy support, 
better introspection, and a few other things), then you will need to use the 
GNUstep runtime.  Alternatively, you can use the GCC runtime (part of GCC).  
GNUstep includes a framework (ObjectiveC2.framework) that supplies the missing 
runtime support functions that are required for Objective-C 2 but not 
implemented in the GCC runtime from GCC 4.5 and earlier.

As a compiler, you currently have to use clang.  GCC 4.6 will support 
Objective-C 2, although you will have to wait for 4.7 for support for the 
non-fragile ABI.  

David

On 26 Dec 2010, at 17:37, Kevin Horton wrote:

> I'm working through an Objective-C 2 text to learn the language, and plan to 
> eventually write a couple of small apps that I will use on iOS, OS X and 
> GNUstep.  I'll do the serious app writing on OS X, but I hope to use a Linux 
> netbook to work through the exercises in this text while travelling. But, I 
> need a compiler and runtime for Linux that handles "Objective-C 2" features 
> such as properties, etc
> 
> I've found a bit of general info on what I need to compile and run 
> Objective-C code that uses some "Objective-C 2" features, but no specific 
> info has leapt to my eye.  Is there any detailed info available on what I 
> need to build, and how to build it, to be able to compile and run Objective-C 
> 2 code on Linux - I'm running Ubuntu 10.04?
> 
> Thanks,
> -- 
> 
> Kevin Horton
> Ottawa, Canada
> 
> 
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