Compilation - Multiple defined issue

I was trying to compile WebDriver for QML on Mac. With *** the above source generates xcode project files.

When I try to compile project in xcode, I get multiple defined error for (FILE), where they are defining

NSSearchPathDirectory

NSSearchPathDomainMask

mac/foundation_util.h

----------

// Adapted from NSPathUtilities.h and NSObjCRuntime.h.
#if __LP64__ || NS_BUILD_32_LIKE_64
typedef unsigned long NSSearchPathDirectory;
typedef unsigned long NSSearchPathDomainMask;
#else
typedef unsigned int NSSearchPathDirectory;
typedef unsigned int NSSearchPathDomainMask;
---------

When I remove this declaration, it is giving not defined error.

I dont know where to start. I am compiling first timein mac with xcode. Any suggestions, pointers would be helpful.