Re: Just when does an application commit to PowerPC vs. Intel?
Re: Just when does an application commit to PowerPC vs. Intel?
- Subject: Re: Just when does an application commit to PowerPC vs. Intel?
- From: ccsccs7 <email@hidden>
- Date: Wed, 11 Jan 2006 17:54:41 -0800
I'm reminded of the old Fat binaries with the 68K to PPC transition. Do
they work basically the same way?
CC
Chris Espinosa wrote:
On Jan 11, 2006, at 10:53 AM, Roland Torres wrote:
…
Just thinking out loud here...
So, the next step (no pun) will be for the next generation of
Universal Binary to include:
- 32-bit PPC
- 32-bit Intel
- 64-bit Intel
How will the proper binary be chosen at runtime then? Will the
default be to run the 32-bit binary if the user is on a 32-bit Intel or
PPC system, and the 64-bit binary on 64-bit Intel systems?
The runtime on the system you're using picks the corresponding
binary. This works correctly today, for example, with the real-life
case you omit: 64-bit PPC. And there are APIs to override this: for
example, the Get Info box on 10.4.4 allows you to check a box to launch
the PPC side of a Universal Binary under Rosetta on an Intel machine,
rather than launching the Intel side; this is useful for testing and
debugging.
…
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