error building in xcode from unity ios build. "duplicate symbols for architecture x86_64"

I am building an app from unity 5.3 personal edition, which builds and tests fine. When I open the project into xcode 6.1 to test it, I only get one error: "apple mach o linker error" with "1730 duplicate symbols for architecture x86_64". I have no idea why this is, and whenever I watch tutorials noone seems to get the same problem. AND I HAVE NO IDEA WHY. Can someone please help me, I will provide anything anyone needs to help with with the problem. The following is a sample of the error. Thanks. (i am relatively new to unity and to xcode so any help would be much appreciated.) I am not going to post all 1730 errors but they all look similar and google doesnt help. duplicate symbol _llvm.cmdline in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apicontext.o) duplicate symbol _llvm.embedded.module in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apicontext.o) duplicate symbol _llvm.cmdline in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apihandle.o) duplicate symbol _llvm.embedded.module in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apihandle.o) duplicate symbol _llvm.cmdline in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apiversion.o) duplicate symbol _llvm.embedded.module in: /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(fmod_debug.o) /Users/rokngo/Desktop/Unity/Wright Orthodontics app/Builds/Wright ortho app. a1.0.1/Libraries/libiPhone-lib.a(apiversion.o) ld: 1730 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)