+#undef dEXT
+#undef EXTCONST
+#undef dEXTCONST
+#if defined(VMS) && !defined(__GNUC__)
+ /* Suppress portability warnings from DECC for VMS-specific extensions */
+# ifdef __DECC
+# pragma message disable (GLOBALEXT,NOSHAREEXT,READONLYEXT)
+# endif
+# define EXT globaldef {"$GLOBAL_RW_VARS"} noshare
+# define dEXT globaldef {"$GLOBAL_RW_VARS"} noshare
+# define EXTCONST globaldef {"$GLOBAL_RO_VARS"} readonly
+# define dEXTCONST globaldef {"$GLOBAL_RO_VARS"} readonly
+#else
+#if defined(WIN32) && defined(__MINGW32__)
+# define EXT __declspec(dllexport)
+# define dEXT
+# define EXTCONST __declspec(dllexport) const
+# define dEXTCONST const
+#else
+#ifdef __cplusplus
+# define EXT
+# define dEXT
+# define EXTCONST extern const
+# define dEXTCONST const
+#else
+# define EXT
+# define dEXT
+# define EXTCONST const
+# define dEXTCONST const
+#endif
+#endif
+#endif