Assuming you build against the 8.x SDK, and you set the deployment target to 8.x or higher, that will be enough.
However, I would suggest that you set the deployment target to an Xcode location. You will need to install it under your Project, and not under your goal. Alternatively, if you have a .xcconfig file, you can modify it by setting
IPHONEOS_DEPLOYMENT_TARGET = 8.1
If you do not have .xcconfig , you can check the deployment target by opening the project.pbxproj file and search for IPHONEOS_DEPLOYMENT_TARGET and check if it is set to your expected value.
source share