Issue #29058: All stable API extensions added after Python 3.2 are now
available only when Py_LIMITED_API is set to the PY_VERSION_HEX value of
the minimum Python version supporting this API.
diff --git a/Include/osmodule.h b/Include/osmodule.h
index 7146757..9095c2f 100644
--- a/Include/osmodule.h
+++ b/Include/osmodule.h
@@ -7,7 +7,9 @@
 extern "C" {
 #endif
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
 PyAPI_FUNC(PyObject *) PyOS_FSPath(PyObject *path);
+#endif
 
 #ifdef __cplusplus
 }