Yikes! You're right. I never noticed, but I never had an 8 GB Mac before. I looked at ./configure for the GHC 6.10.2 source, and realized there was already something there. I tried ./configure --build=x86_64-apple-darwin and it didn't work. However, it did give me something to Google, leading me to Ticket #2965 (new feature request) GHC on OS X does not compile 64-bit 1/19/09 http://hackage.haskell.org/trac/ghc/ticket/2965 Apparently this isn't a one-liner. Once my semester ends, I'll see if I can help. I've got to wonder if it would be less work to sneak a gift Mac Pro past Microsoft security, and just wait? ;-) The GHC team has been busting their humps on parallel code lately, and OS X does so much better... They should stop having to apologize in papers for the poor parallel performance of Linux itself. A decked-out Mac Pro should be the flagship platform for 64 bit, parallel GHC. On Apr 18, 2009, at 1:46 PM, Daniel Peebles wrote:
That looks great! I wonder what about Mac OS leads to such good performance...
Now if only we could get a nice x86_64-producing GHC for Mac OS too, I could use all my RAM and the extra registers my Mac Pro gives me :)