Catalyst version of app not working on Catalina. Why not? Should it?

I just released a Mac version of my app using Catalyst.
It runs fine on my Mac (Big Sur), and others have reported it works fine on their Big Sur macs.

I'm getting emails from users saying it won't run on their Catalina mac.

In Deployment Info of my XCode project, I have the minimum Mac target as 10.15 - so I'd assume it would alert me if there was a reason it wouldn't run on Catalina.

It obviously passed App Review, and is available to download on Catalina macs.

So far, 2 people have let me know about issues.

The first said it crashes on launch, and they sent me the crash log. It looks like it's failing to find the OpenAL library at a location on the OS. I'd have assumed that this was just part of Catalina and the Catalyst project. I.e. it's not something that my app should be including and isn't.

Here's the error:

Code Block Process:       PolyNomePro [3702]
Path:         /Applications/PolyNomePro.app/Contents/MacOS/PolyNomePro
Identifier:      com.larryland.polynomepro
Version:       21.03.1 (1365)
App Item ID:     1151196826
App External ID:   840647992
Code Type:      X86-64 (Native)
Parent Process:    ??? [1]
Responsible:     PolyNomePro [3702]
User ID:       501
Date/Time:      2021-03-17 16:28:27.574 +0300
OS Version:      Mac OS X 10.15.7 (19H524)
Report Version:    12
Anonymous UUID:    1037F4A6-CFC6-D223-CF87-0E52AA81752C
Time Awake Since Boot: 8000 seconds
System Integrity Protection: enabled
Crashed Thread:    0
Exception Type:    EXC_CRASH (SIGABRT)
Exception Codes:   0x0000000000000000, 0x0000000000000000
Exception Note:    EXC_CORPSE_NOTIFY
Termination Reason:  DYLD, [0x1] Library missing
Application Specific Information:
dyld: launch, loading dependent libraries
Dyld Error Message:
 Library not loaded: /System/iOSSupport/System/Library/Frameworks/OpenAL.framework/Versions/A/OpenAL
 Referenced from: /Applications/PolyNomePro.app/Contents/MacOS/PolyNomePro
 Reason: image not found


I even asked this user to try installing XCode in case that iOSSupport folder was something to do with having XCode installed. It didn't make a difference.

The second person that reported an issue sent me a screenshot of the dialog that appeared when they try to run the app.

It says:

PolyNome cannot be opened because of a problem

Check with the developer to make sure PolyNome works with this version of macOS. You may need to reinstall the application. Be sure to install any available updates for the application and macOS.

This report will be sent to Apple automatically.


It seems to me that if it was down to something being deprecated, then it would be less likely to work in Big Sur than in Catalina.

Can anyone help me get to the bottom of this?
Thanks,
Joe

Answered by joecrabtree in 668182022
So it turns out the OpenAL framework isn't available on Catalina, but is on Big Sur.

It was being included in my project due to a specific pod, which I removed, and it fixed the issue
Accepted Answer
So it turns out the OpenAL framework isn't available on Catalina, but is on Big Sur.

It was being included in my project due to a specific pod, which I removed, and it fixed the issue
Catalyst version of app not working on Catalina. Why not? Should it?
 
 
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