You can find some additional settings for Xamarin iOS applications if you right-click on your project and select Options, as shown in the following screenshot. It is a good idea to know what is available for iOS-specific projects in Xamarin Studio. A lot is going on here, but the defaults will get you by in most situations.
Let's discuss some of the most important options, as follows:
iOS Build
SDK version: This is the version of the iOS SDK to compile your application with. It is generally best to use Default.
Linker behavior: Xamarin has implemented a feature called linking. The linker will strip any code that will never be called within your assemblies. This keeps your application small, and allows them to ship a stripped-down version of the core Mono runtime with your app. Except for debug builds, it is best to use the Link SDK assemblies only option. We will cover linking in a future chapter.
Supported Architectures: These are the types of processors.
i386is...