On Wed, Aug 5, 2015, at 07:28 PM, Martin Thomson wrote:
> On Wed, Aug 5, 2015 at 3:59 PM, Matthew N. <ma...@mozilla.com> wrote:
> > If we have data on CPU architecture I don't think the OS version is relevant
> > unless I'm missing something.
> 
> My understanding is that OS version is all that matters.  64-bit apps
> require a 64-bit OS.  (Such an OS requires a 64-bit processor of
> course.)

Apple shipped Mac OS X with system libraries as universal binaries, so
they supported both 32 and 64-bit binaries. (I believe they stopped
shipping 32-bit libraries at some point, however.)

-Ted
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