+/* C++ always has a good enough `const' */
+#if defined const && defined __cplusplus
+/**/#undef const
+#endif
+
+/* Check on the run if we are using exceptions during this compilation.*/
+#if defined(__sgi) || defined(__GNUC__)
+# ifdef __EXCEPTIONS
+# define USING_EXCEPTIONS
+# endif
+#endif
+
+#if defined(__USLC__) || defined(__SUNPRO_CC) || defined(__COMO__) || defined(__ICL)
+# define USING_EXCEPTIONS
+#endif
+