Adding a prefix header to an IOS project

The IOS SDK API for New Relic Mobile requires modification of your project ' s prefix header. If your project does not has one, follow these steps to add it.
From your Xcode menu, select File > New > File ...
From the IOS template options, select Other > PCH file.
Name the file <target_name>-prefix.pch, and then select Create.
From your target's Build settings, select All, and then add the following to the Prefix Header field:
$ (srcroot)/<target_name>-prefix.pch

Adding a prefix header to an IOS project