Manage security protections and resource access for your macOS apps.
The Hardened Runtime, along with System Integrity Protection (SIP), protects the runtime integrity of your software by preventing certain classes of exploits, like code injection, dynamically linked library (DLL) hijacking, and process memory space tampering. To enable the Hardened Runtime for your app, navigate in Xcode to your target’s Signing & Capabilities information and click the + button. In the window that appears, choose Hardened Runtime.
The Hardened Runtime doesn’t affect the operation of most apps, but it does disallow certain less common capabilities, like just-in-time (JIT) compilation. If your app relies on a capability that the Hardened Runtime restricts, add an entitlement to disable an individual protection. You add an entitlement by enabling one of the runtime exceptions or access permissions listed in Xcode. Make sure to use only the entitlements that are absolutely necessary for your app’s functionality.
You add entitlements only to executables. Shared libraries, frameworks, and in-process plug-ins inherit the entitlements of their host executable.