+#ifndef internal_function
+# define internal_function
+#endif
+
+/* Tell the compiler when a conditional or integer expression is
+ almost always true or almost always false. */
+#ifndef HAVE_BUILTIN_EXPECT
+# define __builtin_expect(expr, val) (expr)
+#endif
+
+/* Separator in PATH like lists of pathnames. */
+#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
+ /* Win32, OS/2, DOS */
+# define PATH_SEPARATOR ';'
+#else
+ /* Unix */
+# define PATH_SEPARATOR ':'
+#endif
+