Just installing XCode is not enough since libffi is not installed/not in the correct spot on OSX 10.9.5 resulting in a file not found ffi.h error. A lot of dependencies is needed and listed on the other wikipage.

Getting-Started.md

@@ -115,6 +115,8 @@ At that point, you will have a functioning micropython executable, which may be
 
 ### Mac OSX
 
+Dependencies are listed on [OSX Tips and Tricks]( https://github.com/micropython/micropython/wiki/OSX-Tips-and-Tricks)
+
 The XCode and Command Line Developer Tools package will need to be installed before you can compile and run MicroPython:
 
 > xcode-select --install
@@ -136,4 +138,4 @@ At that point, you will have a functioning micropython executable, which may be
 > ./micropython
 
 ## Microcontrollers (Bare-Metal, without an OS)
-### ARM-based microcontrollers
+### ARM-based microcontrollers