MacOS 10.5 is still largely 32-bit.  MacOS 10.6 is largely 64-bit.  Both are capable of compiling and running for the alternative word-size choice, fairly transparently.  10.6 was released August 2009, but there are likely plenty of people still running 10.5. Regards, Malcolm On 01 Feb, 2011,at 12:10 PM, John Meacham wrote: Even though the hardware is x86_64, I thought the vast majority of macs used a 32 bit build of OSX and 32 bit programs? John On Tue, Feb 1, 2011 at 3:38 AM, Max Cantor wrote:

The last 32-bit, Intel Mac was the Mac Mini, discontinued in August 2007. The bulk of them were discontinued in 2006, along with PowerPC Macs.  Does it make sense to relegate OSX x86_64 to community status while the 32-bit version is considered a supported platform?

Given that I'm far from experienced enough to be able to contribute meaningfully to GHC, I'm not complaining about anyone's efforts, just that those efforts might be a bit misallocated.  I'd venture a guess that far more people are interested in running 64-bit GHC on OSX than in running GHC on what is now fairly antiquated hardware.

mc

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On OSX, as of 10.5, both the 32-bit kernel and the 64-bit kernel can seamlessly run x86_64 binaries in 64-bit mode. MacPorts now defaults to 64-bit for instance. mc On Feb 1, 2011, at 8:10 PM, John Meacham wrote:

Even though the hardware is x86_64, I thought the vast majority of macs used a 32 bit build of OSX and 32 bit programs?

John

On Tue, Feb 1, 2011 at 3:38 AM, Max Cantor wrote:

...

The last 32-bit, Intel Mac was the Mac Mini, discontinued in August 2007. The bulk of them were discontinued in 2006, along with PowerPC Macs. Does it make sense to relegate OSX x86_64 to community status while the 32-bit version is considered a supported platform?

Given that I'm far from experienced enough to be able to contribute meaningfully to GHC, I'm not complaining about anyone's efforts, just that those efforts might be a bit misallocated. I'd venture a guess that far more people are interested in running 64-bit GHC on OSX than in running GHC on what is now fairly antiquated hardware.

mc

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