PyAPI_FUNC() the PyArg_.*SizeT forms. Without this, cygwin has hysterics.
(see buildbot)
diff --git a/Include/modsupport.h b/Include/modsupport.h
index c356f03..9b4d2b4 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -19,6 +19,18 @@
#define PyArg_VaParseTupleAndKeywords _PyArg_VaParseTupleAndKeywords_SizeT
#define PyArg_BuildValue _PyArg_BuildValue_SizeT
#define PyArg_VaBuildValue _PyArg_VaBuildValue_SizeT
+#else
+#if HAVE_DECLSPEC_DLL
+PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, char *, ...);
+PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, char *, ...);
+PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
+ const char *, char **, ...);
+PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
+PyAPI_FUNC(int) _PyArg_VaParse_SizeT(PyObject *, char *, va_list);
+PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
+ const char *, char **, va_list);
+PyAPI_FUNC(PyObject *) _Py_VaBuildValue_SizeT(const char *, va_list);
+#endif
#endif
PyAPI_FUNC(int) PyArg_Parse(PyObject *, const char *, ...);