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diff --git a/compat/strsignal.c b/compat/strsignal.c
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+
+/**
+ * \file strsignal.c
+ *
+ * Time-stamp:        "2010-07-16 15:12:27 bkorb"
+ *
+ *  This file is part of AutoGen.
+ *
+ *  AutoGen Copyright (c) 1992-2012 by Bruce Korb - all rights reserved
+ *
+ *  AutoGen 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AutoGen 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  As a special exception, Bruce Korb gives permission for additional
+ *  uses of the text contained in the release of strsignal.
+ *
+ *  The exception is that, if you link the strsignal library with other
+ *  files to produce an executable, this does not by itself cause the
+ *  resulting executable to be covered by the GNU General Public License.
+ *  Your use of that executable is in no way restricted on account of
+ *  linking the strsignal library code into it.
+ *
+ *  This exception does not however invalidate any other reasons why
+ *  the executable file might be covered by the GNU General Public License.
+ *
+ *  This exception applies only to the code released by Bruce Korb under
+ *  the name strsignal.  If you copy code from other sources under the
+ *  General Public License into a copy of strsignal, as the General Public
+ *  License permits, the exception does not apply to the code that you add
+ *  in this way.  To avoid misleading anyone as to the status of such
+ *  modified files, you must delete this exception notice from them.
+ *
+ *  If you write modifications of your own for strsignal, it is your choice
+ *  whether to permit this exception to apply to your modifications.
+ *  If you do not wish that, delete this exception notice.
+ */
+
+#include "compat.h"
+
+/*  Routines imported from standard C runtime libraries. */
+
+#if ! defined(HAVE_STRSIGNAL)
+
+#ifdef __STDC__
+# include <stddef.h>
+#else   /* !__STDC__ */
+#  ifndef const
+#    define const
+#  endif
+#endif  /* __STDC__ */
+
+#ifdef HAVE_SYS_SIGLIST
+#  include <signal.h>
+#endif
+
+/*
+ *  Import the generated tables
+ */
+#include "strsignal.h"
+#endif
+
+#ifndef HAVE_STRSIGNAL
+
+/*
+
+NAME
+
+    strsignal -- map a signal number to a signal message string
+
+SYNOPSIS
+
+    char *strsignal (int signo)
+
+DESCRIPTION
+
+    Maps an signal number to an signal message string, the contents of
+    which are implementation defined.  On systems which have the external
+    variable sys_siglist, these strings will be the same as the ones used
+    by psignal().
+
+    If the supplied signal number is within the valid range of indices
+    for the sys_siglist, but no message is available for the particular
+    signal number, then returns the string "Signal NUM", where NUM is the
+    signal number.
+
+    If the supplied signal number is not a valid index into sys_siglist,
+    returns NULL.
+
+    The returned string is only guaranteed to be valid only until the
+    next call to strsignal.
+
+    Also, though not declared "const", it is.
+*/
+
+char *
+strsignal( int signo )
+{
+    if (SIGNAL_IN_RANGE( signo ))
+        return (char*)SIGNAL_INFO( signo );
+
+    return NULL;
+}
+#endif  /* HAVE_STRSIGNAL */
+
+/*
+ * Local Variables:
+ * mode: C
+ * c-file-style: "stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * end of compat/strsignal.c */