Clang Update

[David Chisnall]

Hi Everyone,

Just a quick update on my progress getting clang/LLVM to support  
Objective-C code generation on the GNU runtime.  As of the patch I  
just sent for review, the following work:

- Class, protocol and category declarations / definitions.
- Message sends to classes and objects.  Selectors are not yet cached,  
so these are slow.
- @protocol() and @encode().

The following are still to do:

- Message sends to super.
- Constant Objective-C strings.
- ObjectiveC 2.0 stuff (including @synchronized)

I'd like to start testing compiling GNUstep with clang in the next  
week or so.  I seem to remember having problems persuading GNUstep  
Make to use a different compiler to the default one in the past.  Can  
someone tell me what I need to do to try building -base (for example)  
with a different compiler?

David