On 2017-06-08 16:19, Paul Dupuis via use-livecode wrote:
On 6/8/2017 3:54 AM, Mark Waddingham via use-livecode wrote:
As a general request, can people let us know if they are relying on
externals on Mac which are currently 32-bit only?

Forgive the dumb question Mark, but how does someone tell whether
externals are 32 bit or 64 bit?

You can do it from the terminal:

otool -hv <external>.bundle/Contents/MacOS/<external>

Will list what executable 'slices' are in the external's executable.

In my first LC 8.1.3 64 bit build, I accidentally included
revVideoGrabber in my inclusions (we don;t use it, it had been checked
by accident). I discovered my OSX standalone would not even launch with
NO error messages or crash report. Only by opening the App bundle to
look around and double-clicking on the actual executable did I get a OSX
Terminal listing that showed error with LiveCode trying to start
revVideoGrabber and failing. Removing that from the Inclusion list
allowed creation of a Standalone that launched.

Could you file that as a bug? The S/B should ignore inclusions which are not available on the specified architecture and warn if there are mismatches.

Then we noticed that the default text font or text flow is different in
8.1.3 from 6.7.11 and test in our splash screen and a licensing dialog
is cut off under 8.1.3 vs 6.7.11. These are the details that add up to a
length migration time for large applications.

Yes - this is one thing which did change between 7 and 8 - unavoidably so as we moved to using CoreText to render text on Mac, rather than ATSUI.

As another example, in testing our LC6.7.11 app under LC8.1.4, I
discovered that the 'standaloneSaved pDestinationFolder' message returns:

 'C:/Users/Paul/Desktop/TestProject' under LC6.7.11. Note that the name
of the Standalone folder 'HyperRESEARCH' is not included and there is no
ending slash.


'C:/Users/Paul/Desktop/TestProject/HyperRESEARCH/" under LC8.1.3, Note
that the name of the Standalone folder 'HyperRESEARCH' is included and
there is a trailing slash

There has been a bit of churn in the SB messages since 6.7 - various attempts to fix various bugs. If you file a bug with this particular case, Panos will be able to check whether there is still a problem there.

On this topic, I applaud LiveCode for having 64 bit support. I curse
Apple for removing 32 bit support. I still have apps under LC6.7.11 and
LC 5.5.5 that now need to migrate to LC8.1.4+ in the next 6 months and I am really annoyed at Apple for doing this. To be fair, we've known we've need to catch up to current LiveCode releases for a good long while, but
between business pressures to add new features and fix customer visible
bugs, cleaning up code that needs fixing just due to engine changes
unfortunately always falls to last place. Now, fortunately or
unfortunately due to Apple's heavy handedness, it now moves to first
place for us.

Actually, things are not quite as they might appear from my reading.

Apple will not allow 32-bit slices in *new* apps submitted to the Mac App Store from January 2018, and will not accept updates to any app containing 32-bit slices from June 2018:


Versions of Mac OS *after* High Sierra will no longer support 32-bit slices in apps:


So, right now, if you don't put your app into the MacAppStore - there is no need to worry.

If you are looking to submit a new app to MacAppStore then if you don't get it in before January 2018, it has to be 64-bit.

If you have an app in the MacAppStore, or will have before January 2018, then you have until June 2018 to make sure that it is 64-bit.

Everyone has until September 2018 (projected release date, based on history, for the version of mac after High Sierra) to make sure their apps can be 64-bit.

In regards to where LiveCode stands:

  - LiveCode started supporting 64-bit Mac from 8.x

- In 9.0 we will be making 64-bit Mac mode the default for both IDE and Standalones

- If you app works in 9.0, then the only thing blocking you from turning off the 32-bit slice is whether you use externals which are Mac 32-bit only.

- If you app works in 8.0, then the only thing blocking you from turning off the 32-bit slice is whether you use externals which are Mac 32-bit only, or use QuickTime.

Hopefully this makes things a bit clearer.

We need to do a bit more research before deciding on the date of axing 32-bit slices in LiveCode - however when we do this will *only* affect the 'develop' version at the time (i.e. 8.x will continue to be universal, as will all maintenance versions up to the axe date).

Again - please do contact me (off-list is fine, and better perhaps!) if any apps you have (and are intending to update / need to run on versions of Mac into the future) do rely on 32-bit Mac externals which we (LiveCode) do not control. I'm more than happy to help provide at least guidance / options for migration and moving forward.

Warmest Regards,


Mark Waddingham ~ m...@livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps

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