+#if @GNULIB_ISATTY@
+# if @REPLACE_ISATTY@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef isatty
+# define isatty rpl_isatty
+# endif
+_GL_FUNCDECL_RPL (isatty, int, (int fd));
+_GL_CXXALIAS_RPL (isatty, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (isatty, int, (int fd));
+# endif
+_GL_CXXALIASWARN (isatty);
+#elif defined GNULIB_POSIXCHECK
+# undef isatty
+# if HAVE_RAW_DECL_ISATTY
+_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
+ "use gnulib module isatty for portability");
+# endif
+#endif
+
+