[Swarm-Support] Swarm on Leopard

[Gary Polhill]

Hi,

Without wishing to put more pressure on Bill Northcott, I'm wondering what 
needs to be done to get Swarm working on Leopard. Basically I have got as far 
as Alessandro Perrone did in November 2007: Swarm compiles (I extracted the CVS 
version as at 6 April), my model compiles, but when I run it I get this error 
message:

"Version 0 doesn't match runtime protocol version 2"

I tried compiling swarm with --disable-libobjc, and it choked at the last 
minute, building the dynamic library, with a very long list of what looked to 
me like linker messages. These complained of the lack of what looked like objc 
basics, e.g. "__objc_class_name_Protocol". Is there a compiler/linker flag I 
should be using to make sure Apple's native libobjc is picked up when building 
swarm (assuming that is the problem)?

The other approach I had wondered about was building my own copy of gcc, rather 
than using the gcc-4 that comes with the Mac. Any thoughts on whether this is 
worth a try? I feel like this is tantalisingly close to working...

I've been trying to avoid Xcode (a 1.3G download!!)--I was hoping this could 
all be done unix-style.

Thanks in advance...
Gary

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