More problems compiling GHC on Mac OS X

[Wolfgang Thaller]

As far as I can tell right now, "sendfile" is not supported on Mac OS X.
There's no manual page, and it doesn't seem to be in any sytem library. 
There is a prototype in sys/socket.h, but it's wrapped in an #ifdef 
that's never #defined.
When I last build the HEAD here, I didn't have any problems - 
./configure found out that sendfile is not supported, and everything is 
fine until I try to use it (there wasn't yet a fallback implementation 
then).
What did configure say on the subject of sendfile?

Cheers,

Wolfgang