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

[Scott Christley]

On Jun 1, 2012, at 2:27 PM, Paul Johnson wrote:

> 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.

If you put time into it, you will surely overcome my inertia and I will help 
get it working.

cheers
Scott