x86_64 ghc on Mac OS

[Ben Lippmeier]

On 24/02/2009, at 12:18 PM, Daniel Peebles wrote:

>> extern __thread gc_thread* gct
>
> Yeah, but from what I understand of the __thread for thread-local
> storage, it seems rather ELF-specific. Attempting to compile code that
> uses it on (my) Mac OS (i.e., MachO instead of ELF) results in a
> "thread-local storage not supported for this target" error, which
> according to http://lists.apple.com/archives/xcode-users/2006/Jun/msg00551.html
> is expected on Mac OS. Given the line of #ifdefs in that file, though,
> I'm not sure how the thread-local storage works normally for Mac OS.

:) It works on Mac OS usually because gct is stored in a pinned  
register. That won't work with a unregisterised build though. Sounds  
like a Catch-22, better ask Simon M.

Ben.