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annotate rogue5/config.guess @ 81:0e212d46b68f

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rogue4: don't put savefile metadata into the savefile. The save_file() function in save.c stored the savefile's device number, inode number, creation time, and modification time in the file. The restore() function read them back, and apparently used to compare them to protect against cheaters. Unfortunately, the types and sizes of these numbers differ from system to system, which ruins the Roguelike Restoration Project's fine portability work. So they have been removed from the savefile. This BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by excising the chunk starting at offset 0x22 with length sizeof(ino_t) + sizeof(dev_t) + 2 * sizeof(time_t). That's 0x14 on i686 and 0x20 on x86_64, at least with current versions of Linux and glibc.
author John "Elwin" Edwards
date Mon, 05 Aug 2013 20:49:41 -0700
parents f502bf60e6e4
children
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1 #! /bin/sh
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2 # Attempt to guess a canonical system name.
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3 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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4 # 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
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5 # Inc.
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6
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7 timestamp='2006-07-02'
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8
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9 # This file is free software; you can redistribute it and/or modify it
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10 # under the terms of the GNU General Public License as published by
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11 # the Free Software Foundation; either version 2 of the License, or
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12 # (at your option) any later version.
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13 #
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14 # This program is distributed in the hope that it will be useful, but
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15 # WITHOUT ANY WARRANTY; without even the implied warranty of
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16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 # General Public License for more details.
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18 #
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19 # You should have received a copy of the GNU General Public License
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20 # along with this program; if not, write to the Free Software
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21 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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22 # 02110-1301, USA.
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23 #
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24 # As a special exception to the GNU General Public License, if you
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25 # distribute this file as part of a program that contains a
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26 # configuration script generated by Autoconf, you may include it under
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27 # the same distribution terms that you use for the rest of that program.
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28
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29
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30 # Originally written by Per Bothner <per@bothner.com>.
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31 # Please send patches to <config-patches@gnu.org>. Submit a context
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32 # diff and a properly formatted ChangeLog entry.
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33 #
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34 # This script attempts to guess a canonical system name similar to
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35 # config.sub. If it succeeds, it prints the system name on stdout, and
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36 # exits with 0. Otherwise, it exits with 1.
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37 #
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38 # The plan is that this can be called by configure scripts if you
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39 # don't specify an explicit build system type.
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40
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41 me=`echo "$0" | sed -e 's,.*/,,'`
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42
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43 usage="\
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44 Usage: $0 [OPTION]
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45
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46 Output the configuration name of the system \`$me' is run on.
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47
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48 Operation modes:
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49 -h, --help print this help, then exit
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50 -t, --time-stamp print date of last modification, then exit
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51 -v, --version print version number, then exit
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52
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53 Report bugs and patches to <config-patches@gnu.org>."
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54
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55 version="\
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56 GNU config.guess ($timestamp)
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57
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58 Originally written by Per Bothner.
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59 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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60 Free Software Foundation, Inc.
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61
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62 This is free software; see the source for copying conditions. There is NO
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63 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
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64
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65 help="
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66 Try \`$me --help' for more information."
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67
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68 # Parse command line
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69 while test $# -gt 0 ; do
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70 case $1 in
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71 --time-stamp | --time* | -t )
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72 echo "$timestamp" ; exit ;;
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73 --version | -v )
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74 echo "$version" ; exit ;;
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75 --help | --h* | -h )
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76 echo "$usage"; exit ;;
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77 -- ) # Stop option processing
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78 shift; break ;;
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79 - ) # Use stdin as input.
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80 break ;;
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81 -* )
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82 echo "$me: invalid option $1$help" >&2
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83 exit 1 ;;
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84 * )
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85 break ;;
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86 esac
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87 done
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88
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89 if test $# != 0; then
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90 echo "$me: too many arguments$help" >&2
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91 exit 1
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92 fi
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93
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94 trap 'exit 1' 1 2 15
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95
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96 # CC_FOR_BUILD -- compiler used by this script. Note that the use of a
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97 # compiler to aid in system detection is discouraged as it requires
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98 # temporary files to be created and, as you can see below, it is a
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99 # headache to deal with in a portable fashion.
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100
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101 # Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
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102 # use `HOST_CC' if defined, but it is deprecated.
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103
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