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diff --git a/src/syswait.h b/src/syswait.h
new file mode 100644
index 00000000000..41214ea54cf
--- /dev/null
+++ b/src/syswait.h
@@ -0,0 +1,87 @@
+/* Define wait system call interface for Emacs.
+   Copyright (C) 1993 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Emacs 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Define the structure that the wait system call stores.
+   On many systems, there is a structure defined for this.
+   But on vanilla-ish USG systems there is not.  */
+
+#ifndef VMS
+#ifndef WAITTYPE
+#if (!defined (BSD) && !defined (UNIPLUS) && !defined (STRIDE) && !(defined (HPUX) && !defined (NOMULTIPLEJOBS)) && !defined (HAVE_WAIT_HEADER)) || defined (LINUX)
+#define WAITTYPE int
+#define WIFSTOPPED(w) ((w&0377) == 0177)
+#define WIFSIGNALED(w) ((w&0377) != 0177 && (w&~0377) == 0)
+#define WIFEXITED(w) ((w&0377) == 0)
+#define WRETCODE(w) (w >> 8)
+#define WSTOPSIG(w) (w >> 8)
+#define WTERMSIG(w) (w & 0377)
+#ifndef WCOREDUMP
+#define WCOREDUMP(w) ((w&0200) != 0)
+#endif
+#else 
+#ifdef BSD4_1
+#include <wait.h>
+#else
+#include <sys/wait.h>
+#endif /* not BSD 4.1 */
+
+#define WAITTYPE union wait
+#define WRETCODE(w) w.w_retcode
+#define WCOREDUMP(w) w.w_coredump
+
+#ifdef HPUX
+/* HPUX version 7 has broken definitions of these.  */
+#undef WTERMSIG
+#undef WSTOPSIG
+#undef WIFSTOPPED
+#undef WIFSIGNALED
+#undef WIFEXITED
+#endif
+
+#ifndef WTERMSIG
+#define WTERMSIG(w) w.w_termsig
+#endif
+#ifndef WSTOPSIG
+#define WSTOPSIG(w) w.w_stopsig
+#endif
+#ifndef WIFSTOPPED
+#define WIFSTOPPED(w) (WTERMSIG (w) == 0177)
+#endif
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0)
+#endif
+#ifndef WIFEXITED
+#define WIFEXITED(w) (WTERMSIG (w) == 0)
+#endif
+#endif /* BSD or UNIPLUS or STRIDE */
+#endif /* no WAITTYPE */
+#else /* VMS */
+#define WAITTYPE int
+#define WIFSTOPPED(w) 0
+#define WIFSIGNALED(w) 0
+#define WIFEXITED(w) ((w) != -1)
+#define WRETCODE(w) (w)
+#define WSTOPSIG(w) (w)
+#define WCOREDUMP(w) 0
+#define WTERMSIG(w) (w)
+#include <ssdef.h>
+#include <iodef.h>
+#include <clidef.h>
+#include "vmsproc.h"
+#endif /* VMS */