64 bit DMD binary on the Mac

[Daniel Gibson]

Am 29.06.2011 22:01, schrieb Jacob Carlborg:
> On 2011-06-29 18:59, Russel Winder wrote:
>> On Wed, 2011-06-29 at 08:54 -0700, Sean Kelly wrote:
>>> I think the original Core 2 Duo was 32-bit. People still use these at
>>> work, but they're getting rather long in the tooth. Most of them have
>>> failed already (mine did).
>>
>> Core Duo was 32-bit, Core 2 Duo was 64-bit. (*)
>>
>>> Sent from my iPhone
>>>
>>> On Jun 28, 2011, at 3:27 PM, Walter
>>> Bright<newshound2 at digitalmars.com>  wrote:
>>>
>>>> On 6/28/2011 3:22 PM, Nick Sabalausky wrote:
>>>>> OTOH, It seems to be pretty typical, standard, accepted practice in
>>>>> the
>>>>> Apple world for older machines to get abandoned *very* quickly, so
>>>>> maybe
>>>>> 32-bit is already needless on Mac?
>>>>
>>>> Are there any 32 bit x86 Mac machines? My several-years-old mac mini
>>>> is 64 bits.
>>
>> (*) But just because you have a 64-bit processor doesn't mean you can
>> run a 64-bit OS.  Mac OS X selects whether to be 32-bit or 64-bit not on
>> the word width processor, but on the word width of the boot PROM.  So my
>> Core Duo Mac Mini is happily 32-bit, but my Core 2 Duo MacBook has a
>> hell of a time since Mac OS X says 32-bit and the processor says 64-bit.
>> One can only assume Apple assume that anything over 3 years old is
>> broken and already disposed of to be replaced by a new Apple product.
>> Rant elided.  I'll stick with Debian Testing for most of my work.
> 
> Yes exactly. Actually very few macs, what I've heard, run the kernel in
> 64bit.
> 

So is a 32bit kernel just default or can't you even upgrade to 64bit OSX
if you want to with these older Macs (with 64bit CPUs)?
Sounds like a really broken mess.. probably the DMD for OSX should stick
to 32bit or universal binaries.

Cheers,
- Daniel