Select the Xcode version to open your project with. You can choose the Latest version or select a specific version from the drop-down list.

If you have a specific Xcode version installed on your machine that doesn't appear in this list, select Other to find the version in the Applications window that appears. If Unity can't find an Xcode installation on your computer, select the Browse button to locate the Xcode installation directory on your computer.

Note: This option is visible only when you run Unity on macOS.

Select whether Xcode runs your Project as a Release or Debug build.

References Unity libraries instead of copying them into the Xcode project. This option reduces the Xcode project size and makes iteration times faster.

Builds the Player in development mode, which by default includes the Profiler and assertions in your managed assemblies. To add additional diagnostic code paths and data to the build, such as safety checks and debug symbols, configure the appropriate managed code variant for your build. Use this setting when you want to test your application. Selecting a development build defines the scripting symbol for your managed code. However, this symbol is marked for deprecation and it's recommended you replace usages of it with the symbols associated with the relevant managed code variant instead.

For more information, refer to Adding diagnostics to C# code.

Automatically connect the Unity Profiler to your build. For more information, refer to Profiler.

Note: This option is available only if you select Development Build.

Allow the Profiler to process all your script code and record every function call, returning detailed profiling data. For more information, refer to Deep Profiling.

This property is available only if you enable Development Build.

Note: Enabling Deep Profiling might slow down script execution.

Includes debug symbols in managed assemblies, generates unoptimized code, and defines the scripting symbol. This is functionally equivalent to setting the Managed Code Variant Player setting to Debug (Edit > Project Settings > Player > Other Settings). For more information, refer to Adding diagnostics to C# code.

This property is available only if you enable Development Build.

Make the Player wait for a debugger to be attached before it executes any script code.

This property is visible only if you enable Script Debugging.

Specifies the method Unity uses to compress the data in your Project when it builds the Player. This includes Assets, Scenes, Player settings, and GI data.