Silence compile error

setup.py

@@ -1579,6 +1579,7 @@ class PyBuildExt(build_ext):
 ##         # Uncomment these lines if you want to play with xxmodule.c
 ##         ext = Extension('xx', ['xxmodule.c'])
 ##         self.extensions.append(ext)
+        if 'd' not in sys.abiflags:
             ext = Extension('xxlimited', ['xxlimited.c'],
                             define_macros=[('Py_LIMITED_API', 1)])
             self.extensions.append(ext)