+/* Set up a serial structure describing standard input. In inflow.c. */
+extern void initialize_stdin_serial (void);
+
+extern int gdb_has_a_terminal (void);
+
+extern void gdb_save_tty_state (void);
+
+extern void set_initial_gdb_ttystate (void);
+
+/* Set the process group of the caller to its own pid, or do nothing
+ if we lack job control. */
+extern int gdb_setpgid (void);
+