Is it possible to have multiple build configurations to support different iOS versions?

Yes, in Xcode, you can create multiple build configurations to support different iOS versions or different build variants (for example, Debug, Release, as well as custom ones).

Each configuration can have its own settings, such as SDK version, compilation parameters, flags, etc. This is convenient if you need to, for example, build an app supporting iOS 13 and separately supporting iOS 15, or have different settings for testing and production.

To do this in Xcode:

• Open the project settings
• Go to the "Info" tab
• In the "Configurations" section, add new configurations, such as iOS13_Debug, iOS15_Release
• In the build settings for each configuration, specify the required parameters, including the minimum iOS version (Deployment Target)

Thus, you can switch between configurations and build different versions of the app.