Not compiling for me unfortunately.
I used "relative to project" to point the link to a latest copy of the Sparrow project, and when I compile I get a number of errors, the first of which is
"Sparrow-Framework-master/sparrow/src/Classes/SPMacros.h:57:7: Redefinition of enumerator 'SPNotFound'"
And the 2nd being
"Sparrow-Framework-master/sparrow/src/Classes/SPEvent.h:45:1: Duplicate interface definition for class 'SPEvent'"