Initial revision

21 files changed, 1998 insertions, 0 deletions

diff --git a/compat/README b/compat/README
new file mode 100644
index 0000000..4ed8e54
--- /dev/null
+++ b/compat/README
@@ -0,0 +1,8 @@
+This directory contains various header and code files that are
+used make Tcl compatible with various releases of UNIX and UNIX-like
+systems.  Typically, files from this directory are used to compile
+Tcl when a system doesn't contain the corresponding files or when
+they are known to be incorrect.  When the whole world becomes POSIX-
+compliant this directory should be unnecessary.
+
+sccsid = SCCS: @(#) README 1.3 96/02/16 08:56:51
diff --git a/compat/dirent.h b/compat/dirent.h
new file mode 100644
index 0000000..081376b
--- /dev/null
+++ b/compat/dirent.h
@@ -0,0 +1,23 @@
+/*
+ * dirent.h --
+ *
+ *	This file is a replacement for <dirent.h> in systems that
+ *	support the old BSD-style <sys/dir.h> with a "struct direct".
+ *
+ * Copyright (c) 1991 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) dirent.h 1.4 96/02/15 14:43:50
+ */
+
+#ifndef _DIRENT
+#define _DIRENT
+
+#include <sys/dir.h>
+
+#define dirent direct
+
+#endif /* _DIRENT */
diff --git a/compat/dirent2.h b/compat/dirent2.h
new file mode 100644
index 0000000..585a7e8
--- /dev/null
+++ b/compat/dirent2.h
@@ -0,0 +1,59 @@
+/*
+ * dirent.h --
+ *
+ *	Declarations of a library of directory-reading procedures
+ *	in the POSIX style ("struct dirent").
+ *
+ * Copyright (c) 1991 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) dirent2.h 1.4 96/02/15 14:43:51
+ */
+
+#ifndef _DIRENT
+#define _DIRENT
+
+#ifndef _TCL
+#include <tcl.h>
+#endif
+
+/*
+ * Dirent structure, which holds information about a single
+ * directory entry.
+ */
+
+#define MAXNAMLEN 255
+#define DIRBLKSIZ 512
+
+struct dirent {
+    long d_ino;			/* Inode number of entry */
+    short d_reclen;		/* Length of this record */
+    short d_namlen;		/* Length of string in d_name */
+    char d_name[MAXNAMLEN + 1];	/* Name must be no longer than this */
+};
+
+/*
+ * State that keeps track of the reading of a directory (clients
+ * should never look inside this structure;  the fields should
+ * only be accessed by the library procedures).
+ */
+
+typedef struct _dirdesc {
+    int dd_fd;
+    long dd_loc;
+    long dd_size;
+    char dd_buf[DIRBLKSIZ];
+} DIR;
+
+/*
+ * Procedures defined for reading directories:
+ */
+
+extern void		closedir _ANSI_ARGS_((DIR *dirp));
+extern DIR *		opendir _ANSI_ARGS_((char *name));
+extern struct dirent *	readdir _ANSI_ARGS_((DIR *dirp));
+
+#endif /* _DIRENT */
diff --git a/compat/dlfcn.h b/compat/dlfcn.h
new file mode 100644
index 0000000..cf02fb9
--- /dev/null
+++ b/compat/dlfcn.h
@@ -0,0 +1,65 @@
+/* 
+ * dlfcn.h --
+ *
+ *	This file provides a replacement for the header file "dlfcn.h"
+ *	on systems where dlfcn.h is missing.  It's primary use is for
+ *	AIX, where Tcl emulates the dl library.
+ *
+ *	This file is subject to the following copyright notice, which is
+ *	different from the notice used elsewhere in Tcl but rougly
+ *	equivalent in meaning.
+ *
+ *	Copyright (c) 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
+ *	Not derived from licensed software.
+ *
+ *	Permission is granted to freely use, copy, modify, and redistribute
+ *	this software, provided that the author is not construed to be liable
+ *	for any results of using the software, alterations are clearly marked
+ *	as such, and this notice is not modified.
+ *
+ * SCCS: @(#) dlfcn.h 1.4 96/09/17 09:05:59
+ */
+
+/*
+ * @(#)dlfcn.h	1.4 revision of 95/04/25  09:36:52
+ * This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
+ * 30159 Hannover, Germany
+ */
+
+#ifndef __dlfcn_h__
+#define __dlfcn_h__
+
+#ifndef _TCL
+#include <tcl.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Mode flags for the dlopen routine.
+ */
+#define RTLD_LAZY	1	/* lazy function call binding */
+#define RTLD_NOW	2	/* immediate function call binding */
+#define RTLD_GLOBAL	0x100	/* allow symbols to be global */
+
+/*
+ * To be able to intialize, a library may provide a dl_info structure
+ * that contains functions to be called to initialize and terminate.
+ */
+struct dl_info {
+	void (*init) _ANSI_ARGS_((void));
+	void (*fini) _ANSI_ARGS_((void));
+};
+
+VOID *dlopen _ANSI_ARGS_((const char *path, int mode));
+VOID *dlsym _ANSI_ARGS_((void *handle, const char *symbol));
+char *dlerror _ANSI_ARGS_((void));
+int dlclose _ANSI_ARGS_((void *handle));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __dlfcn_h__ */
diff --git a/compat/fixstrtod.c b/compat/fixstrtod.c
new file mode 100644
index 0000000..2655767
--- /dev/null
+++ b/compat/fixstrtod.c
@@ -0,0 +1,38 @@
+/* 
+ * fixstrtod.c --
+ *
+ *	Source code for the "fixstrtod" procedure.  This procedure is
+ *	used in place of strtod under Solaris 2.4, in order to fix
+ *	a bug where the "end" pointer gets set incorrectly.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) fixstrtod.c 1.5 96/02/15 12:08:21
+ */
+
+#include <stdio.h>
+
+#undef strtod
+
+/*
+ * Declare strtod explicitly rather than including stdlib.h, since in
+ * somes systems (e.g. SunOS 4.1.4) stdlib.h doesn't declare strtod.
+ */
+
+extern double strtod();
+
+double
+fixstrtod(string, endPtr)
+    char *string;
+    char **endPtr;
+{
+    double d;
+    d = strtod(string, endPtr);
+    if ((endPtr != NULL) && (*endPtr != string) && ((*endPtr)[-1] == 0)) {
+	*endPtr -= 1;
+    }
+    return d;
+}
diff --git a/compat/float.h b/compat/float.h
new file mode 100644
index 0000000..06db4fd
--- /dev/null
+++ b/compat/float.h
@@ -0,0 +1,16 @@
+/*
+ * float.h --
+ *
+ *	This is a dummy header file to #include in Tcl when there
+ *	is no float.h in /usr/include.  Right now this file is empty:
+ *	Tcl contains #ifdefs to deal with the lack of definitions;
+ *	all it needs is for the #include statement to work.
+ *
+ * Copyright (c) 1993 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) float.h 1.3 96/02/15 14:43:52
+ */
diff --git a/compat/gettod.c b/compat/gettod.c
new file mode 100644
index 0000000..4110262
--- /dev/null
+++ b/compat/gettod.c
@@ -0,0 +1,32 @@
+/* 
+ * gettod.c --
+ *
+ *	This file provides the gettimeofday function on systems
+ *	that only have the System V ftime function.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) gettod.c 1.2 96/02/15 12:08:26
+ */
+
+#include "tcl.h"
+#include "tclPort.h"
+#include <sys/timeb.h>
+
+#undef timezone
+
+int
+gettimeofday(tp, tz)
+struct timeval *tp;
+struct timezone *tz;
+{
+    struct timeb t;
+    ftime(&t);
+    tp->tv_sec = t.time;
+    tp->tv_usec = t. millitm * 1000;
+    return 0;
+}
+
diff --git a/compat/limits.h b/compat/limits.h
new file mode 100644
index 0000000..ec7a909
--- /dev/null
+++ b/compat/limits.h
@@ -0,0 +1,24 @@
+/*
+ * limits.h --
+ *
+ *	This is a dummy header file to #include in Tcl when there
+ *	is no limits.h in /usr/include.  There are only a few
+ *	definitions here;  also see tclPort.h, which already
+ *	#defines some of the things here if they're not arleady
+ *	defined.
+ *
+ * Copyright (c) 1991 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) limits.h 1.8 96/07/08 18:00:13
+ */
+
+#define LONG_MIN		0x80000000
+#define LONG_MAX		0x7fffffff
+#define INT_MIN			0x80000000
+#define INT_MAX			0x7fffffff
+#define SHRT_MIN		0x8000
+#define SHRT_MAX		0x7fff
diff --git a/compat/opendir.c b/compat/opendir.c
new file mode 100644
index 0000000..b1a47ff
--- /dev/null
+++ b/compat/opendir.c
@@ -0,0 +1,108 @@
+/* 
+ * opendir.c --
+ *
+ *	This file provides dirent-style directory-reading procedures
+ *	for V7 Unix systems that don't have such procedures.  The
+ *	origin of this code is unclear, but it seems to have come
+ *	originally from Larry Wall.
+ *
+ *
+ * SCCS: @(#) opendir.c 1.3 96/02/15 12:08:21
+ */
+
+#include "tclInt.h"
+#include "tclPort.h"
+
+#undef DIRSIZ
+#define DIRSIZ(dp) \
+    ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
+
+/*
+ * open a directory.
+ */
+DIR *
+opendir(name)
+char *name;
+{
+	register DIR *dirp;
+	register int fd;
+	char *myname;
+
+	myname = ((*name == '\0') ? "." : name);
+	if ((fd = open(myname, 0, 0)) == -1)
+		return NULL;
+	if ((dirp = (DIR *)ckalloc(sizeof(DIR))) == NULL) {
+		close (fd);
+		return NULL;
+	}
+	dirp->dd_fd = fd;
+	dirp->dd_loc = 0;
+	return dirp;
+}
+
+/*
+ * read an old style directory entry and present it as a new one
+ */
+#ifndef pyr
+#define	ODIRSIZ	14
+
+struct	olddirect {
+	ino_t	od_ino;
+	char	od_name[ODIRSIZ];
+};
+#else	/* a Pyramid in the ATT universe */
+#define	ODIRSIZ	248
+
+struct	olddirect {
+	long	od_ino;
+	short	od_fill1, od_fill2;
+	char	od_name[ODIRSIZ];
+};
+#endif
+
+/*
+ * get next entry in a directory.
+ */
+struct dirent *
+readdir(dirp)
+register DIR *dirp;
+{
+	register struct olddirect *dp;
+	static struct dirent dir;
+
+	for (;;) {
+		if (dirp->dd_loc == 0) {
+			dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
+			    DIRBLKSIZ);
+			if (dirp->dd_size <= 0)
+				return NULL;
+		}
+		if (dirp->dd_loc >= dirp->dd_size) {
+			dirp->dd_loc = 0;
+			continue;
+		}
+		dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc);
+		dirp->dd_loc += sizeof(struct olddirect);
+		if (dp->od_ino == 0)
+			continue;
+		dir.d_ino = dp->od_ino;
+		strncpy(dir.d_name, dp->od_name, ODIRSIZ);
+		dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */
+		dir.d_namlen = strlen(dir.d_name);
+		dir.d_reclen = DIRSIZ(&dir);
+		return (&dir);
+	}
+}
+
+/*
+ * close a directory.
+ */
+void
+closedir(dirp)
+register DIR *dirp;
+{
+	close(dirp->dd_fd);
+	dirp->dd_fd = -1;
+	dirp->dd_loc = 0;
+	ckfree((char *) dirp);
+}
diff --git a/compat/stdlib.h b/compat/stdlib.h
new file mode 100644
index 0000000..059ea29
--- /dev/null
+++ b/compat/stdlib.h
@@ -0,0 +1,45 @@
+/*
+ * stdlib.h --
+ *
+ *	Declares facilities exported by the "stdlib" portion of
+ *	the C library.  This file isn't complete in the ANSI-C
+ *	sense;  it only declares things that are needed by Tcl.
+ *	This file is needed even on many systems with their own
+ *	stdlib.h (e.g. SunOS) because not all stdlib.h files
+ *	declare all the procedures needed here (such as strtod).
+ *
+ * Copyright (c) 1991 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) stdlib.h 1.10 96/02/15 14:43:54
+ */
+
+#ifndef _STDLIB
+#define _STDLIB
+
+#include <tcl.h>
+
+extern void		abort _ANSI_ARGS_((void));
+extern double		atof _ANSI_ARGS_((CONST char *string));
+extern int		atoi _ANSI_ARGS_((CONST char *string));
+extern long		atol _ANSI_ARGS_((CONST char *string));
+extern char *		calloc _ANSI_ARGS_((unsigned int numElements,
+			    unsigned int size));
+extern void		exit _ANSI_ARGS_((int status));
+extern int		free _ANSI_ARGS_((char *blockPtr));
+extern char *		getenv _ANSI_ARGS_((CONST char *name));
+extern char *		malloc _ANSI_ARGS_((unsigned int numBytes));
+extern void		qsort _ANSI_ARGS_((VOID *base, int n, int size,
+			    int (*compar)(CONST VOID *element1, CONST VOID
+			    *element2)));
+extern char *		realloc _ANSI_ARGS_((char *ptr, unsigned int numBytes));
+extern double		strtod _ANSI_ARGS_((CONST char *string, char **endPtr));
+extern long		strtol _ANSI_ARGS_((CONST char *string, char **endPtr,
+			    int base));
+extern unsigned long	strtoul _ANSI_ARGS_((CONST char *string,
+			    char **endPtr, int base));
+
+#endif /* _STDLIB */
diff --git a/compat/strftime.c b/compat/strftime.c
new file mode 100644
index 0000000..7c72557
--- /dev/null
+++ b/compat/strftime.c
@@ -0,0 +1,385 @@
+/* 
+ * strftime.c --
+ *
+ *	This file contains a modified version of the BSD 4.4 strftime
+ *	function.
+ *
+ * This file is a modified version of the strftime.c file from the BSD 4.4
+ * source.  See the copyright notice below for details on redistribution
+ * restrictions.  The "license.terms" file does not apply to this file.
+ *
+ * SCCS: @(#) strftime.c 1.4 97/08/07 17:17:02
+ */
+
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)strftime.c	5.11 (Berkeley) 2/24/91";*/
+static char *rcsid = "$Id: strftime.c,v 1.1 1998/03/26 14:46:31 rjohnson Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <time.h>
+#include <string.h>
+#include <locale.h>
+#include "tclInt.h"
+#include "tclPort.h"
+
+#define TM_YEAR_BASE   1900
+
+typedef struct {
+    const char *abday[7];
+    const char *day[7];
+    const char *abmon[12];
+    const char *mon[12];
+    const char *am_pm[2];
+    const char *d_t_fmt;
+    const char *d_fmt;
+    const char *t_fmt;
+    const char *t_fmt_ampm;
+} _TimeLocale;
+ 
+static const _TimeLocale _DefaultTimeLocale = 
+{
+    {
+	"Sun","Mon","Tue","Wed","Thu","Fri","Sat",
+    },
+    {
+	"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
+	"Friday", "Saturday"
+    },
+    {
+	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+    },
+    {
+	"January", "February", "March", "April", "May", "June", "July",
+	"August", "September", "October", "November", "December"
+    },
+    {
+	"AM", "PM"
+    },
+    "%a %b %d %H:%M:%S %Y",
+    "%m/%d/%y",
+    "%H:%M:%S",
+    "%I:%M:%S %p"
+};
+
+static const _TimeLocale *_CurrentTimeLocale = &_DefaultTimeLocale;
+
+static size_t gsize;
+static char *pt;
+static int		 _add _ANSI_ARGS_((const char* str));
+static int		_conv _ANSI_ARGS_((int n, int digits, int pad));
+static int		_secs _ANSI_ARGS_((const struct tm *t));
+static size_t		_fmt _ANSI_ARGS_((const char *format,
+			    const struct tm *t));
+
+size_t
+TclStrftime(s, maxsize, format, t)
+    char *s;
+    size_t maxsize;
+    const char *format;
+    const struct tm *t;
+{
+    tzset();
+
+    pt = s;
+    if ((gsize = maxsize) < 1)
+	return(0);
+    if (_fmt(format, t)) {
+	*pt = '\0';
+	return(maxsize - gsize);
+    }
+    return(0);
+}
+
+#define SUN_WEEK(t)	(((t)->tm_yday + 7 - \
+				((t)->tm_wday)) / 7)
+#define MON_WEEK(t)	(((t)->tm_yday + 7 - \
+				((t)->tm_wday ? (t)->tm_wday - 1 : 6)) / 7)
+
+static size_t
+_fmt(format, t)
+    const char *format;
+    const struct tm *t;
+{
+    for (; *format; ++format) {
+	if (*format == '%') {
+	    ++format;
+	    if (*format == 'E') {
+				/* Alternate Era */
+		++format;
+	    } else if (*format == 'O') {
+				/* Alternate numeric symbols */
+		++format;
+	    }
+	    switch(*format) {
+		case '\0':
+		    --format;
+		    break;
+		case 'A':
+		    if (t->tm_wday < 0 || t->tm_wday > 6)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->day[t->tm_wday]))
+			return(0);
+		    continue;
+		case 'a':
+		    if (t->tm_wday < 0 || t->tm_wday > 6)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->abday[t->tm_wday]))
+			return(0);
+		    continue;
+		case 'B':
+		    if (t->tm_mon < 0 || t->tm_mon > 11)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->mon[t->tm_mon]))
+			return(0);
+		    continue;
+		case 'b':
+		case 'h':
+		    if (t->tm_mon < 0 || t->tm_mon > 11)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->abmon[t->tm_mon]))
+			return(0);
+		    continue;
+		case 'C':
+		    if (!_conv((t->tm_year + TM_YEAR_BASE) / 100,
+			    2, '0'))
+			return(0);
+		    continue;
+		case 'c':
+		    if (!_fmt(_CurrentTimeLocale->d_t_fmt, t))
+			return(0);
+		    continue;
+		case 'D':
+		    if (!_fmt("%m/%d/%y", t))
+			return(0);
+		    continue;
+		case 'd':
+		    if (!_conv(t->tm_mday, 2, '0'))
+			return(0);
+		    continue;
+		case 'e':
+		    if (!_conv(t->tm_mday, 2, ' '))
+			return(0);
+		    continue;
+		case 'H':
+		    if (!_conv(t->tm_hour, 2, '0'))
+			return(0);
+		    continue;
+		case 'I':
+		    if (!_conv(t->tm_hour % 12 ?
+			    t->tm_hour % 12 : 12, 2, '0'))
+			return(0);
+		    continue;
+		case 'j':
+		    if (!_conv(t->tm_yday + 1, 3, '0'))
+			return(0);
+		    continue;
+		case 'k':
+		    if (!_conv(t->tm_hour, 2, ' '))
+			return(0);
+		    continue;
+		case 'l':
+		    if (!_conv(t->tm_hour % 12 ?
+			    t->tm_hour % 12: 12, 2, ' '))
+			return(0);
+		    continue;
+		case 'M':
+		    if (!_conv(t->tm_min, 2, '0'))
+			return(0);
+		    continue;
+		case 'm':
+		    if (!_conv(t->tm_mon + 1, 2, '0'))
+			return(0);
+		    continue;
+		case 'n':
+		    if (!_add("\n"))
+			return(0);
+		    continue;
+		case 'p':
+		    if (!_add(_CurrentTimeLocale->am_pm[t->tm_hour >= 12]))
+			return(0);
+		    continue;
+		case 'R':
+		    if (!_fmt("%H:%M", t))
+			return(0);
+		    continue;
+		case 'r':
+		    if (!_fmt(_CurrentTimeLocale->t_fmt_ampm, t))
+			return(0);
+		    continue;
+		case 'S':
+		    if (!_conv(t->tm_sec, 2, '0'))
+			return(0);
+		    continue;
+		case 's':
+		    if (!_secs(t))
+			return(0);
+		    continue;
+		case 'T':
+		    if (!_fmt("%H:%M:%S", t))
+			return(0);
+		    continue;
+		case 't':
+		    if (!_add("\t"))
+			return(0);
+		    continue;
+		case 'U':
+		    if (!_conv(SUN_WEEK(t), 2, '0'))
+			return(0);
+		    continue;
+		case 'u':
+		    if (!_conv(t->tm_wday ? t->tm_wday : 7, 1, '0'))
+			return(0);
+		    continue;
+		case 'V':
+		{
+				/* ISO 8601 Week Of Year:
+				   If the week (Monday - Sunday) containing
+				   January 1 has four or more days in the new 
+				   year, then it is week 1; otherwise it is 
+				   week 53 of the previous year and the next
+				   week is week one. */
+				 
+		    int week = MON_WEEK(t);
+
+		    int days = (((t)->tm_yday + 7 - \
+			    ((t)->tm_wday ? (t)->tm_wday - 1 : 6)) % 7);
+
+
+		    if (days >= 4) {
+			week++;
+		    } else if (week == 0) {
+			week = 53;
+		    }
+
+		    if (!_conv(week, 2, '0'))
+			return(0);
+		    continue;
+		}
+		case 'W':
+		    if (!_conv(MON_WEEK(t), 2, '0'))
+			return(0);
+		    continue;
+		case 'w':
+		    if (!_conv(t->tm_wday, 1, '0'))
+			return(0);
+		    continue;
+		case 'x':
+		    if (!_fmt(_CurrentTimeLocale->d_fmt, t))
+			return(0);
+		    continue;
+		case 'X':
+		    if (!_fmt(_CurrentTimeLocale->t_fmt, t))
+			return(0);
+		    continue;
+		case 'y':
+		    if (!_conv((t->tm_year + TM_YEAR_BASE) % 100,
+			    2, '0'))
+			return(0);
+		    continue;
+		case 'Y':
+		    if (!_conv((t->tm_year + TM_YEAR_BASE), 4, '0'))
+			return(0);
+		    continue;
+#ifndef MAC_TCL
+		case 'Z': {
+		    char *name = TclpGetTZName();
+		    if (name && !_add(name)) {
+			return 0;
+		    }
+		    continue;
+		}
+#endif
+		case '%':
+		    /*
+		     * X311J/88-090 (4.12.3.5): if conversion char is
+		     * undefined, behavior is undefined.  Print out the
+		     * character itself as printf(3) does.
+		     */
+		default:
+		    break;
+	    }
+	}
+	if (!gsize--)
+	    return(0);
+	*pt++ = *format;
+    }
+    return(gsize);
+}
+
+static int
+_secs(t)
+    const struct tm *t;
+{
+    static char buf[15];
+    register time_t s;
+    register char *p;
+    struct tm tmp;
+
+    /* Make a copy, mktime(3) modifies the tm struct. */
+    tmp = *t;
+    s = mktime(&tmp);
+    for (p = buf + sizeof(buf) - 2; s > 0 && p > buf; s /= 10)
+	*p-- = (char)(s % 10 + '0');
+    return(_add(++p));
+}
+
+static int
+_conv(n, digits, pad)
+    int n, digits;
+    int pad;
+{
+    static char buf[10];
+    register char *p;
+
+    for (p = buf + sizeof(buf) - 2; n > 0 && p > buf; n /= 10, --digits)
+	*p-- = (char)(n % 10 + '0');
+    while (p > buf && digits-- > 0)
+	*p-- = (char) pad;
+    return(_add(++p));
+}
+
+static int
+_add(str)
+    const char *str;
+{
+    for (;; ++pt, --gsize) {
+	if (!gsize)
+	    return(0);
+	if (!(*pt = *str++))
+	    return(1);
+    }
+}
diff --git a/compat/string.h b/compat/string.h
new file mode 100644
index 0000000..541e159
--- /dev/null
+++ b/compat/string.h
@@ -0,0 +1,66 @@
+/*
+ * string.h --
+ *
+ *	Declarations of ANSI C library procedures for string handling.
+ *
+ * Copyright (c) 1991-1993 The Regents of the University of California.
+ * Copyright (c) 1994-1996 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) string.h 1.13 96/04/09 22:14:53
+ */
+
+#ifndef _STRING
+#define _STRING
+
+#include <tcl.h>
+
+/*
+ * The following #include is needed to define size_t. (This used to
+ * include sys/stdtypes.h but that doesn't exist on older versions
+ * of SunOS, e.g. 4.0.2, so I'm trying sys/types.h now.... hopefully
+ * it exists everywhere)
+ */
+
+#ifndef MAC_TCL
+#include <sys/types.h>
+#endif
+
+extern char *		memchr _ANSI_ARGS_((CONST VOID *s, int c, size_t n));
+extern int		memcmp _ANSI_ARGS_((CONST VOID *s1, CONST VOID *s2,
+			    size_t n));
+extern char *		memcpy _ANSI_ARGS_((VOID *t, CONST VOID *f, size_t n));
+extern char *		memmove _ANSI_ARGS_((VOID *t, CONST VOID *f,
+			    size_t n));
+extern char *		memset _ANSI_ARGS_((VOID *s, int c, size_t n));
+
+extern int		strcasecmp _ANSI_ARGS_((CONST char *s1,
+			    CONST char *s2));
+extern char *		strcat _ANSI_ARGS_((char *dst, CONST char *src));
+extern char *		strchr _ANSI_ARGS_((CONST char *string, int c));
+extern int		strcmp _ANSI_ARGS_((CONST char *s1, CONST char *s2));
+extern char *		strcpy _ANSI_ARGS_((char *dst, CONST char *src));
+extern size_t		strcspn _ANSI_ARGS_((CONST char *string,
+			    CONST char *chars));
+extern char *		strdup _ANSI_ARGS_((CONST char *string));
+extern char *		strerror _ANSI_ARGS_((int error));
+extern size_t		strlen _ANSI_ARGS_((CONST char *string));
+extern int		strncasecmp _ANSI_ARGS_((CONST char *s1,
+			    CONST char *s2, size_t n));
+extern char *		strncat _ANSI_ARGS_((char *dst, CONST char *src,
+			    size_t numChars));
+extern int		strncmp _ANSI_ARGS_((CONST char *s1, CONST char *s2,
+			    size_t nChars));
+extern char *		strncpy _ANSI_ARGS_((char *dst, CONST char *src,
+			    size_t numChars));
+extern char *		strpbrk _ANSI_ARGS_((CONST char *string, char *chars));
+extern char *		strrchr _ANSI_ARGS_((CONST char *string, int c));
+extern size_t		strspn _ANSI_ARGS_((CONST char *string,
+			    CONST char *chars));
+extern char *		strstr _ANSI_ARGS_((CONST char *string,
+			    CONST char *substring));
+extern char *		strtok _ANSI_ARGS_((CONST char *s, CONST char *delim));
+
+#endif /* _STRING */
diff --git a/compat/strncasecmp.c b/compat/strncasecmp.c
new file mode 100644
index 0000000..749c1da
--- /dev/null
+++ b/compat/strncasecmp.c
@@ -0,0 +1,142 @@
+/* 
+ * strncasecmp.c --
+ *
+ *	Source code for the "strncasecmp" library routine.
+ *
+ * Copyright (c) 1988-1993 The Regents of the University of California.
+ * Copyright (c) 1995-1996 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) strncasecmp.c 1.7 96/10/24 15:23:36
+ */
+
+#include "tclPort.h"
+
+/*
+ * This array is designed for mapping upper and lower case letter
+ * together for a case independent comparison.  The mappings are
+ * based upon ASCII character sequences.
+ */
+
+static unsigned char charmap[] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+    0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+    0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+    0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+    0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+    0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+    0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+    0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+    0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+    0xc0, 0xe1, 0xe2, 0xe3, 0xe4, 0xc5, 0xe6, 0xe7,
+    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+    0xf8, 0xf9, 0xfa, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+    0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+    0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
+};
+
+/*
+ * Here are the prototypes just in case they are not included
+ * in tclPort.h.
+ */
+int		strncasecmp _ANSI_ARGS_((CONST char *s1,
+			    CONST char *s2, size_t n));
+
+int		strcasecmp _ANSI_ARGS_((CONST char *s1,
+			    CONST char *s2));
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strcasecmp --
+ *
+ *	Compares two strings, ignoring case differences.
+ *
+ * Results:
+ *	Compares two null-terminated strings s1 and s2, returning -1, 0,
+ *	or 1 if s1 is lexicographically less than, equal to, or greater
+ *	than s2.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+strcasecmp(s1, s2)
+    CONST char *s1;			/* First string. */
+    CONST char *s2;			/* Second string. */
+{
+    unsigned char u1, u2;
+
+    for ( ; ; s1++, s2++) {
+	u1 = (unsigned char) *s1;
+	u2 = (unsigned char) *s2;
+	if ((u1 == '\0') || (charmap[u1] != charmap[u2])) {
+	    break;
+	}
+    }
+    return charmap[u1] - charmap[u2];
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strncasecmp --
+ *
+ *	Compares two strings, ignoring case differences.
+ *
+ * Results:
+ *	Compares up to length chars of s1 and s2, returning -1, 0, or 1
+ *	if s1 is lexicographically less than, equal to, or greater
+ *	than s2 over those characters.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+strncasecmp(s1, s2, length)
+    CONST char *s1;		/* First string. */
+    CONST char *s2;		/* Second string. */
+    size_t length;		/* Maximum number of characters to compare
+				 * (stop earlier if the end of either string
+				 * is reached). */
+{
+    unsigned char u1, u2;
+
+    for (; length != 0; length--, s1++, s2++) {
+	u1 = (unsigned char) *s1;
+	u2 = (unsigned char) *s2;
+	if (charmap[u1] != charmap[u2]) {
+	    return charmap[u1] - charmap[u2];
+	}
+	if (u1 == '\0') {
+	    return 0;
+	}
+    }
+    return 0;
+}
diff --git a/compat/strstr.c b/compat/strstr.c
new file mode 100644
index 0000000..59296db
--- /dev/null
+++ b/compat/strstr.c
@@ -0,0 +1,68 @@
+/* 
+ * strstr.c --
+ *
+ *	Source code for the "strstr" library routine.
+ *
+ * Copyright (c) 1988-1993 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) strstr.c 1.4 96/02/15 12:08:22
+ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strstr --
+ *
+ *	Locate the first instance of a substring in a string.
+ *
+ * Results:
+ *	If string contains substring, the return value is the
+ *	location of the first matching instance of substring
+ *	in string.  If string doesn't contain substring, the
+ *	return value is 0.  Matching is done on an exact
+ *	character-for-character basis with no wildcards or special
+ *	characters.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+char *
+strstr(string, substring)
+    register char *string;	/* String to search. */
+    char *substring;		/* Substring to try to find in string. */
+{
+    register char *a, *b;
+
+    /* First scan quickly through the two strings looking for a
+     * single-character match.  When it's found, then compare the
+     * rest of the substring.
+     */
+
+    b = substring;
+    if (*b == 0) {
+	return string;
+    }
+    for ( ; *string != 0; string += 1) {
+	if (*string != *b) {
+	    continue;
+	}
+	a = string;
+	while (1) {
+	    if (*b == 0) {
+		return string;
+	    }
+	    if (*a++ != *b++) {
+		break;
+	    }
+	}
+	b = substring;
+    }
+    return (char *) 0;
+}
diff --git a/compat/strtod.c b/compat/strtod.c
new file mode 100644
index 0000000..0a26163
--- /dev/null
+++ b/compat/strtod.c
@@ -0,0 +1,257 @@
+/* 
+ * strtod.c --
+ *
+ *	Source code for the "strtod" library procedure.
+ *
+ * Copyright (c) 1988-1993 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) strtod.c 1.9 96/12/13 15:02:46
+ */
+
+#include "tcl.h"
+#ifdef NO_STDLIB_H
+#   include "../compat/stdlib.h"
+#else
+#   include <stdlib.h>
+#endif
+#include <ctype.h>
+
+#ifndef TRUE
+#define TRUE 1
+#define FALSE 0
+#endif
+#ifndef NULL
+#define NULL 0
+#endif
+
+static int maxExponent = 511;	/* Largest possible base 10 exponent.  Any
+				 * exponent larger than this will already
+				 * produce underflow or overflow, so there's
+				 * no need to worry about additional digits.
+				 */
+static double powersOf10[] = {	/* Table giving binary powers of 10.  Entry */
+    10.,			/* is 10^2^i.  Used to convert decimal */
+    100.,			/* exponents into floating-point numbers. */
+    1.0e4,
+    1.0e8,
+    1.0e16,
+    1.0e32,
+    1.0e64,
+    1.0e128,
+    1.0e256
+};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strtod --
+ *
+ *	This procedure converts a floating-point number from an ASCII
+ *	decimal representation to internal double-precision format.
+ *
+ * Results:
+ *	The return value is the double-precision floating-point
+ *	representation of the characters in string.  If endPtr isn't
+ *	NULL, then *endPtr is filled in with the address of the
+ *	next character after the last one that was part of the
+ *	floating-point number.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+double
+strtod(string, endPtr)
+    CONST char *string;		/* A decimal ASCII floating-point number,
+				 * optionally preceded by white space.
+				 * Must have form "-I.FE-X", where I is the
+				 * integer part of the mantissa, F is the
+				 * fractional part of the mantissa, and X
+				 * is the exponent.  Either of the signs
+				 * may be "+", "-", or omitted.  Either I
+				 * or F may be omitted, or both.  The decimal
+				 * point isn't necessary unless F is present.
+				 * The "E" may actually be an "e".  E and X
+				 * may both be omitted (but not just one).
+				 */
+    char **endPtr;		/* If non-NULL, store terminating character's
+				 * address here. */
+{
+    int sign, expSign = FALSE;
+    double fraction, dblExp, *d;
+    register CONST char *p;
+    register int c;
+    int exp = 0;		/* Exponent read from "EX" field. */
+    int fracExp = 0;		/* Exponent that derives from the fractional
+				 * part.  Under normal circumstatnces, it is
+				 * the negative of the number of digits in F.
+				 * However, if I is very long, the last digits
+				 * of I get dropped (otherwise a long I with a
+				 * large negative exponent could cause an
+				 * unnecessary overflow on I alone).  In this
+				 * case, fracExp is incremented one for each
+				 * dropped digit. */
+    int mantSize;		/* Number of digits in mantissa. */
+    int decPt;			/* Number of mantissa digits BEFORE decimal
+				 * point. */
+    CONST char *pExp;		/* Temporarily holds location of exponent
+				 * in string. */
+
+    /*
+     * Strip off leading blanks and check for a sign.
+     */
+
+    p = string;
+    while (isspace(*p)) {
+	p += 1;
+    }
+    if (*p == '-') {
+	sign = TRUE;
+	p += 1;
+    } else {
+	if (*p == '+') {
+	    p += 1;
+	}
+	sign = FALSE;
+    }
+
+    /*
+     * Count the number of digits in the mantissa (including the decimal
+     * point), and also locate the decimal point.
+     */
+
+    decPt = -1;
+    for (mantSize = 0; ; mantSize += 1)
+    {
+	c = *p;
+	if (!isdigit(c)) {
+	    if ((c != '.') || (decPt >= 0)) {
+		break;
+	    }
+	    decPt = mantSize;
+	}
+	p += 1;
+    }
+
+    /*
+     * Now suck up the digits in the mantissa.  Use two integers to
+     * collect 9 digits each (this is faster than using floating-point).
+     * If the mantissa has more than 18 digits, ignore the extras, since
+     * they can't affect the value anyway.
+     */
+    
+    pExp  = p;
+    p -= mantSize;
+    if (decPt < 0) {
+	decPt = mantSize;
+    } else {
+	mantSize -= 1;			/* One of the digits was the point. */
+    }
+    if (mantSize > 18) {
+	fracExp = decPt - 18;
+	mantSize = 18;
+    } else {
+	fracExp = decPt - mantSize;
+    }
+    if (mantSize == 0) {
+	fraction = 0.0;
+	p = string;
+	goto done;
+    } else {
+	int frac1, frac2;
+	frac1 = 0;
+	for ( ; mantSize > 9; mantSize -= 1)
+	{
+	    c = *p;
+	    p += 1;
+	    if (c == '.') {
+		c = *p;
+		p += 1;
+	    }
+	    frac1 = 10*frac1 + (c - '0');
+	}
+	frac2 = 0;
+	for (; mantSize > 0; mantSize -= 1)
+	{
+	    c = *p;
+	    p += 1;
+	    if (c == '.') {
+		c = *p;
+		p += 1;
+	    }
+	    frac2 = 10*frac2 + (c - '0');
+	}
+	fraction = (1.0e9 * frac1) + frac2;
+    }
+
+    /*
+     * Skim off the exponent.
+     */
+
+    p = pExp;
+    if ((*p == 'E') || (*p == 'e')) {
+	p += 1;
+	if (*p == '-') {
+	    expSign = TRUE;
+	    p += 1;
+	} else {
+	    if (*p == '+') {
+		p += 1;
+	    }
+	    expSign = FALSE;
+	}
+	while (isdigit(*p)) {
+	    exp = exp * 10 + (*p - '0');
+	    p += 1;
+	}
+    }
+    if (expSign) {
+	exp = fracExp - exp;
+    } else {
+	exp = fracExp + exp;
+    }
+
+    /*
+     * Generate a floating-point number that represents the exponent.
+     * Do this by processing the exponent one bit at a time to combine
+     * many powers of 2 of 10. Then combine the exponent with the
+     * fraction.
+     */
+    
+    if (exp < 0) {
+	expSign = TRUE;
+	exp = -exp;
+    } else {
+	expSign = FALSE;
+    }
+    if (exp > maxExponent) {
+	exp = maxExponent;
+    }
+    dblExp = 1.0;
+    for (d = powersOf10; exp != 0; exp >>= 1, d += 1) {
+	if (exp & 01) {
+	    dblExp *= *d;
+	}
+    }
+    if (expSign) {
+	fraction /= dblExp;
+    } else {
+	fraction *= dblExp;
+    }
+
+done:
+    if (endPtr != NULL) {
+	*endPtr = (char *) p;
+    }
+
+    if (sign) {
+	return -fraction;
+    }
+    return fraction;
+}
diff --git a/compat/strtol.c b/compat/strtol.c
new file mode 100644
index 0000000..c781bd6
--- /dev/null
+++ b/compat/strtol.c
@@ -0,0 +1,83 @@
+/* 
+ * strtol.c --
+ *
+ *	Source code for the "strtol" library procedure.
+ *
+ * Copyright (c) 1988 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) strtol.c 1.4 96/02/15 12:08:23
+ */
+
+#include <ctype.h>
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strtol --
+ *
+ *	Convert an ASCII string into an integer.
+ *
+ * Results:
+ *	The return value is the integer equivalent of string.  If endPtr
+ *	is non-NULL, then *endPtr is filled in with the character
+ *	after the last one that was part of the integer.  If string
+ *	doesn't contain a valid integer value, then zero is returned
+ *	and *endPtr is set to string.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+long int
+strtol(string, endPtr, base)
+    char *string;		/* String of ASCII digits, possibly
+				 * preceded by white space.  For bases
+				 * greater than 10, either lower- or
+				 * upper-case digits may be used.
+				 */
+    char **endPtr;		/* Where to store address of terminating
+				 * character, or NULL. */
+    int base;			/* Base for conversion.  Must be less
+				 * than 37.  If 0, then the base is chosen
+				 * from the leading characters of string:
+				 * "0x" means hex, "0" means octal, anything
+				 * else means decimal.
+				 */
+{
+    register char *p;
+    int result;
+
+    /*
+     * Skip any leading blanks.
+     */
+
+    p = string;
+    while (isspace(*p)) {
+	p += 1;
+    }
+
+    /*
+     * Check for a sign.
+     */
+
+    if (*p == '-') {
+	p += 1;
+	result = -(strtoul(p, endPtr, base));
+    } else {
+	if (*p == '+') {
+	    p += 1;
+	}
+	result = strtoul(p, endPtr, base);
+    }
+    if ((result == 0) && (endPtr != 0) && (*endPtr == p)) {
+	*endPtr = string;
+    }
+    return result;
+}
diff --git a/compat/strtoul.c b/compat/strtoul.c
new file mode 100644
index 0000000..37fe490
--- /dev/null
+++ b/compat/strtoul.c
@@ -0,0 +1,183 @@
+/* 
+ * strtoul.c --
+ *
+ *	Source code for the "strtoul" library procedure.
+ *
+ * Copyright (c) 1988 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) strtoul.c 1.5 96/02/15 12:08:24
+ */
+
+#include <ctype.h>
+
+/*
+ * The table below is used to convert from ASCII digits to a
+ * numerical equivalent.  It maps from '0' through 'z' to integers
+ * (100 for non-digit characters).
+ */
+
+static char cvtIn[] = {
+    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,		/* '0' - '9' */
+    100, 100, 100, 100, 100, 100, 100,		/* punctuation */
+    10, 11, 12, 13, 14, 15, 16, 17, 18, 19,	/* 'A' - 'Z' */
+    20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
+    30, 31, 32, 33, 34, 35,
+    100, 100, 100, 100, 100, 100,		/* punctuation */
+    10, 11, 12, 13, 14, 15, 16, 17, 18, 19,	/* 'a' - 'z' */
+    20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
+    30, 31, 32, 33, 34, 35};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strtoul --
+ *
+ *	Convert an ASCII string into an integer.
+ *
+ * Results:
+ *	The return value is the integer equivalent of string.  If endPtr
+ *	is non-NULL, then *endPtr is filled in with the character
+ *	after the last one that was part of the integer.  If string
+ *	doesn't contain a valid integer value, then zero is returned
+ *	and *endPtr is set to string.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+unsigned long int
+strtoul(string, endPtr, base)
+    char *string;		/* String of ASCII digits, possibly
+				 * preceded by white space.  For bases
+				 * greater than 10, either lower- or
+				 * upper-case digits may be used.
+				 */
+    char **endPtr;		/* Where to store address of terminating
+				 * character, or NULL. */
+    int base;			/* Base for conversion.  Must be less
+				 * than 37.  If 0, then the base is chosen
+				 * from the leading characters of string:
+				 * "0x" means hex, "0" means octal, anything
+				 * else means decimal.
+				 */
+{
+    register char *p;
+    register unsigned long int result = 0;
+    register unsigned digit;
+    int anyDigits = 0;
+
+    /*
+     * Skip any leading blanks.
+     */
+
+    p = string;
+    while (isspace(*p)) {
+	p += 1;
+    }
+
+    /*
+     * If no base was provided, pick one from the leading characters
+     * of the string.
+     */
+    
+    if (base == 0)
+    {
+	if (*p == '0') {
+	    p += 1;
+	    if (*p == 'x') {
+		p += 1;
+		base = 16;
+	    } else {
+
+		/*
+		 * Must set anyDigits here, otherwise "0" produces a
+		 * "no digits" error.
+		 */
+
+		anyDigits = 1;
+		base = 8;
+	    }
+	}
+	else base = 10;
+    } else if (base == 16) {
+
+	/*
+	 * Skip a leading "0x" from hex numbers.
+	 */
+
+	if ((p[0] == '0') && (p[1] == 'x')) {
+	    p += 2;
+	}
+    }
+
+    /*
+     * Sorry this code is so messy, but speed seems important.  Do
+     * different things for base 8, 10, 16, and other.
+     */
+
+    if (base == 8) {
+	for ( ; ; p += 1) {
+	    digit = *p - '0';
+	    if (digit > 7) {
+		break;
+	    }
+	    result = (result << 3) + digit;
+	    anyDigits = 1;
+	}
+    } else if (base == 10) {
+	for ( ; ; p += 1) {
+	    digit = *p - '0';
+	    if (digit > 9) {
+		break;
+	    }
+	    result = (10*result) + digit;
+	    anyDigits = 1;
+	}
+    } else if (base == 16) {
+	for ( ; ; p += 1) {
+	    digit = *p - '0';
+	    if (digit > ('z' - '0')) {
+		break;
+	    }
+	    digit = cvtIn[digit];
+	    if (digit > 15) {
+		break;
+	    }
+	    result = (result << 4) + digit;
+	    anyDigits = 1;
+	}
+    } else {
+	for ( ; ; p += 1) {
+	    digit = *p - '0';
+	    if (digit > ('z' - '0')) {
+		break;
+	    }
+	    digit = cvtIn[digit];
+	    if (digit >= base) {
+		break;
+	    }
+	    result = result*base + digit;
+	    anyDigits = 1;
+	}
+    }
+
+    /*
+     * See if there were any digits at all.
+     */
+
+    if (!anyDigits) {
+	p = string;
+    }
+
+    if (endPtr != 0) {
+	*endPtr = p;
+    }
+
+    return result;
+}
diff --git a/compat/tclErrno.h b/compat/tclErrno.h
new file mode 100644
index 0000000..bc45481
--- /dev/null
+++ b/compat/tclErrno.h
@@ -0,0 +1,100 @@
+/*
+ * tclErrno.h --
+ *
+ *	This header file contains the various POSIX errno definitions that
+ *	are used by Tcl.  This file is derived from the spec POSIX 2.4 and
+ *	previous implementations for Berkeley UNIX.
+ *
+ * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
+ * Copyright (c) 1996 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tclErrno.h 1.1 96/04/29 15:25:31
+ */
+
+extern int errno;			/* global error number */
+
+#define	EPERM		1		/* Operation not permitted */
+#define	ENOENT		2		/* No such file or directory */
+#define	ESRCH		3		/* No such process */
+#define	EINTR		4		/* Interrupted system call */
+#define	EIO		5		/* Input/output error */
+#define	ENXIO		6		/* Device not configured */
+#define	E2BIG		7		/* Argument list too long */
+#define	ENOEXEC		8		/* Exec format error */
+#define	EBADF		9		/* Bad file descriptor */
+#define	ECHILD		10		/* No child processes */
+#define	EDEADLK		11		/* Resource deadlock avoided */
+					/* 11 was EAGAIN */
+#define	ENOMEM		12		/* Cannot allocate memory */
+#define	EACCES		13		/* Permission denied */
+#define	EFAULT		14		/* Bad address */
+#define	ENOTBLK		15		/* Block device required */
+#define	EBUSY		16		/* Device busy */
+#define	EEXIST		17		/* File exists */
+#define	EXDEV		18		/* Cross-device link */
+#define	ENODEV		19		/* Operation not supported by device */
+#define	ENOTDIR		20		/* Not a directory */
+#define	EISDIR		21		/* Is a directory */
+#define	EINVAL		22		/* Invalid argument */
+#define	ENFILE		23		/* Too many open files in system */
+#define	EMFILE		24		/* Too many open files */
+#define	ENOTTY		25		/* Inappropriate ioctl for device */
+#define	ETXTBSY		26		/* Text file busy */
+#define	EFBIG		27		/* File too large */
+#define	ENOSPC		28		/* No space left on device */
+#define	ESPIPE		29		/* Illegal seek */
+#define	EROFS		30		/* Read-only file system */
+#define	EMLINK		31		/* Too many links */
+#define	EPIPE		32		/* Broken pipe */
+#define	EDOM		33		/* Numerical argument out of domain */
+#define	ERANGE		34		/* Result too large */
+#define	EAGAIN		35		/* Resource temporarily unavailable */
+#define	EWOULDBLOCK	EAGAIN		/* Operation would block */
+#define	EINPROGRESS	36		/* Operation now in progress */
+#define	EALREADY	37		/* Operation already in progress */
+#define	ENOTSOCK	38		/* Socket operation on non-socket */
+#define	EDESTADDRREQ	39		/* Destination address required */
+#define	EMSGSIZE	40		/* Message too long */
+#define	EPROTOTYPE	41		/* Protocol wrong type for socket */
+#define	ENOPROTOOPT	42		/* Protocol not available */
+#define	EPROTONOSUPPORT	43		/* Protocol not supported */
+#define	ESOCKTNOSUPPORT	44		/* Socket type not supported */
+#define	EOPNOTSUPP	45		/* Operation not supported on socket */
+#define	EPFNOSUPPORT	46		/* Protocol family not supported */
+#define	EAFNOSUPPORT	47		/* Address family not supported by protocol family */
+#define	EADDRINUSE	48		/* Address already in use */
+#define	EADDRNOTAVAIL	49		/* Can't assign requested address */
+#define	ENETDOWN	50		/* Network is down */
+#define	ENETUNREACH	51		/* Network is unreachable */
+#define	ENETRESET	52		/* Network dropped connection on reset */
+#define	ECONNABORTED	53		/* Software caused connection abort */
+#define	ECONNRESET	54		/* Connection reset by peer */
+#define	ENOBUFS		55		/* No buffer space available */
+#define	EISCONN		56		/* Socket is already connected */
+#define	ENOTCONN	57		/* Socket is not connected */
+#define	ESHUTDOWN	58		/* Can't send after socket shutdown */
+#define	ETOOMANYREFS	59		/* Too many references: can't splice */
+#define	ETIMEDOUT	60		/* Connection timed out */
+#define	ECONNREFUSED	61		/* Connection refused */
+#define	ELOOP		62		/* Too many levels of symbolic links */
+#define	ENAMETOOLONG	63		/* File name too long */
+#define	EHOSTDOWN	64		/* Host is down */
+#define	EHOSTUNREACH	65		/* No route to host */
+#define	ENOTEMPTY	66		/* Directory not empty */
+#define	EPROCLIM	67		/* Too many processes */
+#define	EUSERS		68		/* Too many users */
+#define	EDQUOT		69		/* Disc quota exceeded */
+#define	ESTALE		70		/* Stale NFS file handle */
+#define	EREMOTE		71		/* Too many levels of remote in path */
+#define	EBADRPC		72		/* RPC struct is bad */
+#define	ERPCMISMATCH	73		/* RPC version wrong */
+#define	EPROGUNAVAIL	74		/* RPC prog. not avail */
+#define	EPROGMISMATCH	75		/* Program version wrong */
+#define	EPROCUNAVAIL	76		/* Bad procedure for program */
+#define	ENOLCK		77		/* No locks available */
+#define	ENOSYS		78		/* Function not implemented */
+#define	EFTYPE		79		/* Inappropriate file type or format */
+
diff --git a/compat/tmpnam.c b/compat/tmpnam.c
new file mode 100644
index 0000000..c29a1e3
--- /dev/null
+++ b/compat/tmpnam.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of California at Berkeley. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific written prior permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ *
+ * SCCS: @(#) tmpnam.c 1.3 96/02/15 12:08:25
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <stdio.h>
+
+/*
+ * Use /tmp instead of /usr/tmp, because L_tmpname is only 14 chars
+ * on some machines (like NeXT machines) and /usr/tmp will cause
+ * buffer overflows.
+ */
+
+#ifdef P_tmpdir
+#   undef P_tmpdir
+#endif
+#define	P_tmpdir	"/tmp"
+
+char *
+tmpnam(s)
+	char *s;
+{
+	static char name[50];
+	char *mktemp();
+
+	if (!s)
+		s = name;
+	(void)sprintf(s, "%s/XXXXXX", P_tmpdir);
+	return(mktemp(s));
+}
diff --git a/compat/unistd.h b/compat/unistd.h
new file mode 100644
index 0000000..3af430c
--- /dev/null
+++ b/compat/unistd.h
@@ -0,0 +1,84 @@
+/*
+ * unistd.h --
+ *
+ *      Macros, CONSTants and prototypes for Posix conformance.
+ *
+ * Copyright 1989 Regents of the University of California
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies.  The University of California
+ * makes no representations about the suitability of this
+ * software for any purpose.  It is provided "as is" without
+ * express or implied warranty.
+ *
+ * SCCS: @(#) unistd.h 1.7 96/02/15 14:43:57
+ */
+
+#ifndef _UNISTD
+#define _UNISTD
+
+#include <sys/types.h>
+#ifndef _TCL
+#   include "tcl.h"
+#endif
+
+#ifndef NULL
+#define NULL    0
+#endif
+
+/* 
+ * Strict POSIX stuff goes here.  Extensions go down below, in the 
+ * ifndef _POSIX_SOURCE section.
+ */
+
+extern void _exit _ANSI_ARGS_((int status));
+extern int access _ANSI_ARGS_((CONST char *path, int mode));
+extern int chdir _ANSI_ARGS_((CONST char *path));
+extern int chown _ANSI_ARGS_((CONST char *path, uid_t owner, gid_t group));
+extern int close _ANSI_ARGS_((int fd));
+extern int dup _ANSI_ARGS_((int oldfd));
+extern int dup2 _ANSI_ARGS_((int oldfd, int newfd));
+extern int execl _ANSI_ARGS_((CONST char *path, ...));
+extern int execle _ANSI_ARGS_((CONST char *path, ...));
+extern int execlp _ANSI_ARGS_((CONST char *file, ...));
+extern int execv _ANSI_ARGS_((CONST char *path, char **argv));
+extern int execve _ANSI_ARGS_((CONST char *path, char **argv, char **envp));
+extern int execvp _ANSI_ARGS_((CONST char *file, char **argv));
+extern pid_t fork _ANSI_ARGS_((void));
+extern char *getcwd _ANSI_ARGS_((char *buf, size_t size));
+extern gid_t getegid _ANSI_ARGS_((void));
+extern uid_t geteuid _ANSI_ARGS_((void));
+extern gid_t getgid _ANSI_ARGS_((void));
+extern int getgroups _ANSI_ARGS_((int bufSize, int *buffer));
+extern pid_t getpid _ANSI_ARGS_((void));
+extern uid_t getuid _ANSI_ARGS_((void));
+extern int isatty _ANSI_ARGS_((int fd));
+extern long lseek _ANSI_ARGS_((int fd, long offset, int whence));
+extern int pipe _ANSI_ARGS_((int *fildes));
+extern int read _ANSI_ARGS_((int fd, char *buf, size_t size));
+extern int setgid _ANSI_ARGS_((gid_t group));
+extern int setuid _ANSI_ARGS_((uid_t user));
+extern unsigned sleep _ANSI_ARGS_ ((unsigned seconds));
+extern char *ttyname _ANSI_ARGS_((int fd));
+extern int unlink _ANSI_ARGS_((CONST char *path));
+extern int write _ANSI_ARGS_((int fd, CONST char *buf, size_t size));
+
+#ifndef	_POSIX_SOURCE
+extern char *crypt _ANSI_ARGS_((CONST char *, CONST char *));
+extern int fchown _ANSI_ARGS_((int fd, uid_t owner, gid_t group));
+extern int flock _ANSI_ARGS_((int fd, int operation));
+extern int ftruncate _ANSI_ARGS_((int fd, unsigned long length));
+extern int ioctl _ANSI_ARGS_((int fd, int request, ...));
+extern int readlink _ANSI_ARGS_((CONST char *path, char *buf, int bufsize));
+extern int setegid _ANSI_ARGS_((gid_t group));
+extern int seteuid _ANSI_ARGS_((uid_t user));
+extern int setreuid _ANSI_ARGS_((int ruid, int euid));
+extern int symlink _ANSI_ARGS_((CONST char *, CONST char *));
+extern int ttyslot _ANSI_ARGS_((void));
+extern int truncate _ANSI_ARGS_((CONST char *path, unsigned long length));
+extern int vfork _ANSI_ARGS_((void));
+#endif /* _POSIX_SOURCE */
+
+#endif /* _UNISTD */
+
diff --git a/compat/waitpid.c b/compat/waitpid.c
new file mode 100644
index 0000000..179d5de
--- /dev/null
+++ b/compat/waitpid.c
@@ -0,0 +1,170 @@
+/* 
+ * waitpid.c --
+ *
+ *	This procedure emulates the POSIX waitpid kernel call on
+ *	BSD systems that don't have waitpid but do have wait3.
+ *	This code is based on a prototype version written by
+ *	Mark Diekhans and Karl Lehenbauer.
+ *
+ * Copyright (c) 1993 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) waitpid.c 1.9 96/02/15 12:08:26
+ */
+
+#include "tclInt.h"
+#include "tclPort.h"
+
+/*
+ * A linked list of the following structures is used to keep track
+ * of processes for which we received notification from the kernel,
+ * but the application hasn't waited for them yet (this can happen
+ * because wait may not return the process we really want).  We
+ * save the information here until the application finally does
+ * wait for the process.
+ */
+
+typedef struct WaitInfo {
+    int pid;				/* Pid of process that exited. */
+    WAIT_STATUS_TYPE status;		/* Status returned when child exited
+					 * or suspended. */
+    struct WaitInfo *nextPtr;		/* Next in list of exited processes. */
+} WaitInfo;
+
+static WaitInfo *deadList = NULL;	/* First in list of all dead
+					 * processes. */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * waitpid --
+ *
+ *	This procedure emulates the functionality of the POSIX
+ *	waitpid kernel call, using the BSD wait3 kernel call.
+ *	Note:  it doesn't emulate absolutely all of the waitpid
+ *	functionality, in that it doesn't support pid's of 0
+ *	or < -1.
+ *
+ * Results:
+ *	-1 is returned if there is an error in the wait kernel call.
+ *	Otherwise the pid of an exited or suspended process is
+ *	returned and *statusPtr is set to the status value of the
+ *	process.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef waitpid
+#   undef waitpid
+#endif
+
+int
+waitpid(pid, statusPtr, options)
+    int pid;			/* The pid to wait on.  Must be -1 or
+				 * greater than zero. */
+    int *statusPtr;		/* Where to store wait status for the
+				 * process. */
+    int options;		/* OR'ed combination of WNOHANG and
+				 * WUNTRACED. */
+{
+    register WaitInfo *waitPtr, *prevPtr;
+    int result;
+    WAIT_STATUS_TYPE status;
+
+    if ((pid < -1) || (pid == 0)) {
+	errno = EINVAL;
+	return -1;
+    }
+
+    /*
+     * See if there's a suitable process that has already stopped or
+     * exited. If so, remove it from the list of exited processes and
+     * return its information.
+     */
+
+    for (waitPtr = deadList, prevPtr = NULL; waitPtr != NULL;
+	    prevPtr = waitPtr, waitPtr = waitPtr->nextPtr) {
+	if ((pid != waitPtr->pid) && (pid != -1)) {
+	    continue;
+	}
+	if (!(options & WUNTRACED) && (WIFSTOPPED(waitPtr->status))) {
+	    continue;
+	}
+	result = waitPtr->pid;
+	*statusPtr = *((int *) &waitPtr->status);
+	if (prevPtr == NULL) {
+	    deadList = waitPtr->nextPtr;
+	} else {
+	    prevPtr->nextPtr = waitPtr->nextPtr;
+	}
+	ckfree((char *) waitPtr);
+	return result;
+    }
+
+    /*
+     * Wait for any process to stop or exit.  If it's an acceptable one
+     * then return it to the caller;  otherwise store information about it
+     * in the list of exited processes and try again.  On systems that
+     * have only wait but not wait3, there are several situations we can't
+     * handle, but we do the best we can (e.g. can still handle some
+     * combinations of options by invoking wait instead of wait3).
+     */
+
+    while (1) {
+#if NO_WAIT3
+	if (options & WNOHANG) {
+	    return 0;
+	}
+	if (options != 0) {
+	    errno = EINVAL;
+	    return -1;
+	}
+	result = wait(&status);
+#else
+	result = wait3(&status, options, 0);
+#endif
+	if ((result == -1) && (errno == EINTR)) {
+	    continue;
+	}
+	if (result <= 0) {
+	    return result;
+	}
+
+	if ((pid != result) && (pid != -1)) {
+	    goto saveInfo;
+	}
+	if (!(options & WUNTRACED) && (WIFSTOPPED(status))) {
+	    goto saveInfo;
+	}
+	*statusPtr = *((int *) &status);
+	return result;
+
+	/*
+	 * Can't return this info to caller.  Save it in the list of
+	 * stopped or exited processes.  Tricky point: first check for
+	 * an existing entry for the process and overwrite it if it
+	 * exists (e.g. a previously stopped process might now be dead).
+	 */
+
+	saveInfo:
+	for (waitPtr = deadList; waitPtr != NULL; waitPtr = waitPtr->nextPtr) {
+	    if (waitPtr->pid == result) {
+		waitPtr->status = status;
+		goto waitAgain;
+	    }
+	}
+	waitPtr = (WaitInfo *) ckalloc(sizeof(WaitInfo));
+	waitPtr->pid = result;
+	waitPtr->status = status;
+	waitPtr->nextPtr = deadList;
+	deadList = waitPtr;
+
+	waitAgain: continue;
+    }
+}