carthage-copy-dependencies is a carthage helper script. In an Xcode Run Script Build Phase you pass it a set of Input Files
and it automatically determines their dependencies and copies all of them into the application directory.
In the script text field type carthage-copy-dependecies and setup input files as shown in the picture.
All of the input files must reside in the same Carthage folder as the tool is looking for other dependencies in that folder.