+# if (defined(WIN32) || defined(__SYMBIAN32__)) && !defined(PERL_STATIC_SYMS)
+# if defined(PERLDLL) || defined(__SYMBIAN32__)
+# define EXT extern __declspec(dllexport)
+# define dEXT
+# define EXTCONST extern __declspec(dllexport) const
+# define dEXTCONST const
+# else
+# define EXT extern __declspec(dllimport)
+# define dEXT
+# define EXTCONST extern __declspec(dllimport) const
+# define dEXTCONST const
+# endif
+# else
+# if defined(__CYGWIN__) && defined(USEIMPORTLIB)
+# define EXT extern __declspec(dllimport)
+# define dEXT
+# define EXTCONST extern __declspec(dllimport) const
+# define dEXTCONST const
+# else
+# define EXT extern
+# define dEXT
+# define EXTCONST extern const
+# define dEXTCONST const
+# endif
+# endif