Re: [Swarm-Support] Pls bring me up to speed on gcc-4.7 and Swarm. Anybody?

[Paul Johnson]

On 05/31/2012 02:08 PM, Scott Christley wrote:
> On May 30, 2012, at 4:43 PM, Paul Johnson wrote:
> 
>> On 05/30/2012 04:12 PM, Scott Christley wrote:
>>> Hi Paul,
>>>
>>> Swarm will not work with gcc-4.7.0.  More specifically, gcc-4.7.0 has the 
>>> new GNU Objective-C runtime library which has been extensively changed to 
>>> be compatible with Objective-C v2.0 from Apple.
>>>
>>
>> Bummer.
>>
>> Is there anything to be done?
> 
> Yes.  Porting Swarm to Mac required me to write an objc abstraction layer, 
> during that process Apple came out with ObjC V2 so I naturally wrote the 
> abstraction layer to match Apple's API.  If you look at the file 
> swarm-objc-apple2.h in src/defobj, you will see that all of the Swarm objc 
> functions are just #define'd to the Apple objc functions.  The same thing can 
> be done for GNU objc by creating a swarm-objc-gnu2.h then have it be included 
> from swarm-objc-api.h under the right conditions (i.e. some check for GNU and 
> objc version).  If the Apple and GNU runtimes have the same behavior, which I 
> think they are suppose to, then the objc abstraction layer can be tossed 
> completely and ObjC V2 used directly.
> 

Thanks very much.  I would like to ask for a show of hands here to ask if there 
is anybody else besides me who would
like to talk this over and work on this?

I will have some time in later June to focus on this, if I could find a few 
team mates, it might be more fun.

pj

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