I made a simple app in Swift.
Compilation was on MacBook Pro 16 (Apple M3 Pro) / Sonoma 14.4.1, and the XCode version used was 15.3.
When I run this app on Big Sur(11.5.2) / Intel Core i5 iMac, following message is noticed.
"The 'MYAPP' application cannot be opened because this application is not supported on this Mac."
If I run MyApp.app/Contents/MacOS/myapp directly, “...Bad CPU type in executable”is displayed.
Build Settings are as follows:
Minimum Deployments: macOS 11.0
Architectures: Standard Architectures (Apple Silicon, Intel) - $(ARCHS_STANDARD)
Build Active Architecture Only : Debug - Yes / Release - No
Code Signing by : Development ID
and notarization is completed
Additionally, SimpleFirewall (The Network Extension example) works well on Big Sur.
I compared all settings with The SimpleFirewall project and couldn't find anything
unusual.