Re: MacOS plans to drop support for 32-bit applications

I don't think that Apple have yet specified exactly what they mean by
"reduced level of support" for 32-bit applications. Clearly they are
wanting to move to 64-bit across the board, but I doubt that they will
completely block 32-bit applications straight away - a lot of
professional users of macOS still rely on expensive 32-bit software
that they are probably not wanting to replace (and may even replace
with Windows or Linux software if forced to change).

Audacity already provides installers and ZIP packages for Windows and
macOS, and a tarball for Linux. With limited numbers of developers and
support  people, we are not keen on doubling the number of release
versions, so while 32-bit applications work on 32-bit and 64-bit
hardware, we will continue to release 32-bit builds. We also don't
want to abandon our many users that have older 32-bit machines, but we
realise that eventually we will have to switch to 64-bit. When that
happens, users of older 32-bit machines will still be able to use
previous versions of Audacity, but will no longer be able to benefit
from updates.

There could be some benefits from building as 64-bit, particularly for
people making extremely long recordings (over 12 hours), but there are
also downsides, including increased memory requirements, and most
importantly, incompatibility with 32-bit hardware.

Steve

On 16 November 2017 at 14:09, Nikita Sadkov <[email protected]> wrote:
> Why dropping 32-bit? 64-bit code is slower, due to higher memory
> requirement. An array of addresses now takes two times the memory
> bandwidth.
>
> On 11/16/17, Murph Sewall <[email protected]> wrote:
>> Mac OS 10.12.6 Audacity 2.2.0
>>
>> Apple has announced that it will cease supporting 32-bit apps when it
>> releases version 10.14 next year. I have been upgrading apps to 64-bit and
>> will soon install OS 10.13 (High Sierra). Evidently, there is not yet a
>> 64-bit version of Audacity for the MacOS. I assume that version 2.2.0 will
>> continue to function in Mac OS 10.13, although some apparently do not. Is a
>> 64-bit version in the works?
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> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> *********** ASKING FOR HELP *************
>
> When asking for help on this list, please include the following information, so we can
> help you properly:
>
> * What operating system you are using (for example, Windows XP or Mac OS X 10.5.1)
>
> * Exactly what three digit version number of Audacity you are using (Help > About
>    Audacity, or Audacity >  About Audacity on a Mac computer)
>
> * If this is a recording problem, what equipment you are recording with, and how is it
>    connected to the computer?
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------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
*********** ASKING FOR HELP *************

When asking for help on this list, please include the following information, so we can
help you properly:

* What operating system you are using (for example, Windows XP or Mac OS X 10.5.1)

* Exactly what three digit version number of Audacity you are using (Help > About
   Audacity, or Audacity >  About Audacity on a Mac computer)

* If this is a recording problem, what equipment you are recording with, and how is it
   connected to the computer?

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