--- /dev/null
+/* "Hello world" program for GNU C Library on bare Mach 3.0. */
+
+Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <mach.h>
+#include <mach/device.h>
+#include <errno.h>
+
+extern FILE *mach_open_devstream (device_t dev);
+
+int
+main (int argc, char **argv, char **envp)
+{
+ error_t err;
+ mach_port_t device, consdev;
+ FILE *consf;
+
+ device = pid2task (-2);
+ err = device_open (device, D_WRITE, "console", consdev);
+ mach_port_deallocate (mach_task_self (), device);
+ if (err)
+ exit (err);
+
+ consf = mach_open_devstream (consdev);
+ if (consf == NULL)
+ exit (errno);
+
+ fputs ("Hello, world!\n", consf);
+ exit (0);
+}