I am attempting to bring a Swift 3.x application up to date to the latest version of Swift by executing conversions in old versions of Xcode. This has brought me to Xcode 9.x.x. So, I attempted to install Xcode 9.x.x on a 16-inch MacBook Pro running Catalina 10.15.2. I tried both 9.4.1 and 9.3.1. Both failed with error:
Found out Xcode 12.5 Beta only works on Big Sur. Will they support Catalina in later beta versions? Still running a 2012 MacBook Pro Retina with plans to get the Silicon 16' whenever that comes around. Was expecting support to stop with Xcode 13. Didn't think this would happen so soon! I believe this problem it's an issue with some upgrades from Mojave to Catalina, restricted to this two process's, XprotectService and syspolicyd, being in some kind of conflict with Xcode. Although Apple Portugal never gave a definitive solution neither the true nature of the problem, their support was tireless, and in the end they put me in.
- Xcode 4.3 reorganizes the Xcode menu to include development tools. Xcode 4.3.1 was released on March 7, 2012 to add support for iOS 5.1. Xcode 4.3.2 was released on March 22, 2012 with enhancements to the iOS Simulator and a suggested move to the LLDB debugger versus the GDB debugger (which appear to be undocumented changes).
- Rolfbjarne changed the title Xcode 11 Xcode 9.4 needed for 32b Mac apps crashes when accepting the license on Catalina Can't build xamarin-macios on Catalina because of the Xcode 9.4 requirement Jun 19, 2019.
I suppose AppKit in 10.15.2 no longer possesses the symbol expected by Xcode. Am I correct to conclude Xcode 9.x.x is not supported on Catalina?
Xcode 9 Catalina Free
If this is the case, how can I obtain a copy of High Sierra or Mojave to run Xcode from there? I understand I may not be able to run these operating systems natively on the 16-inch MacBook. Is it possible to run these older OS versions in a VM?