Undefined symbols:
"_cpInitChipmunk", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpBodyNew", referenced from:
-[Ball2 init2] in Ball2.o
-[Ball init1] in Ball.o
"_cpSpaceNew", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpCircleShapeNew", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpBodyUpdatePosition", referenced from:
-[OpenGLView renderTimerCallback:] in OpenGLView.o
-[OpenGLView renderTimerCallback:] in OpenGLView.o
"_cpSpaceAddBody", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpResetShapeIdCounter", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpSpaceAddShape", referenced from:
-[OpenGLView initWithFrame:] in OpenGLView.o
-[OpenGLView initWithFrame:] in OpenGLView.o
"_cpBodyUpdateVelocity", referenced from:
-[OpenGLView renderTimerCallback:] in OpenGLView.o
-[OpenGLView renderTimerCallback:] in OpenGLView.o
ld: symbol(s) not found
collect2: ld returned 1 exit status