1 | #! /bin/bash |
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2 | # machten.sh |
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3 | # This is for MachTen 4.1.4. It might work on other versions and variants |
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4 | # too. If it doesn't, tell me, and I'll try to fix it -- domo@computer.org |
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5 | # |
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6 | # Users of earlier MachTen versions might need a fixed tr from ftp.tenon.com. |
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7 | # This should be described in the MachTen release notes. |
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8 | # |
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9 | # MachTen 2.x has its own hint file. |
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10 | # |
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11 | # The original version of this file was put together by Andy Dougherty |
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12 | # <doughera@lafcol.lafayette.edu> based on comments from lots of |
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13 | # folks, especially |
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14 | # Mark Pease <peasem@primenet.com> |
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15 | # Martijn Koster <m.koster@webcrawler.com> |
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16 | # Richard Yeh <rcyeh@cco.caltech.edu> |
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17 | # |
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18 | # Remove dynamic loading libraries from search; enable SysV IPC with |
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19 | # MachTen 4.1.4 and above; define SYSTEM_ALIGN_BYTES for old MT versions |
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20 | # -- Dominic Dunlop <domo@computer.org> 000224 |
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21 | # Disable shadow password file access: MT 4.1.1 has necessary library |
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22 | # functions, but not header file (or documentation) |
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23 | # -- Dominic Dunlop <domo@computer.org> 990804 |
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24 | # For now, explicitly disable dynamic loading -- MT 4.1.1 has it, |
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25 | # but these hints do not yet support it. |
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26 | # Define NOTEDEF_MACHTEN to undo gratuitous Tenon hack to signal.h. |
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27 | # -- Dominic Dunlop <domo@computer.org> 9800802 |
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28 | # Completely disable SysV IPC pending more complete support from Tenon |
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29 | # -- Dominic Dunlop <domo@computer.org> 980712 |
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30 | # Use vfork and perl's malloc by default |
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31 | # -- Dominic Dunlop <domo@computer.org> 980630 |
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32 | # Raise perl's stack size again; cut down reg_infty; document |
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33 | # -- Dominic Dunlop <domo@computer.org> 980619 |
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34 | # Use of semctl() can crash system: disable -- Dominic Dunlop 980506 |
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35 | # Raise stack size further; slight tweaks to accomodate MT 4.1 |
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36 | # -- Dominic Dunlop <domo@computer.org> 980211 |
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37 | # Raise perl's stack size -- Dominic Dunlop <domo@tcp.ip.lu> 970922 |
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38 | # Reinstate sigsetjmp iff version is 4.0.3 or greater; use nm |
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39 | # (assumes Configure change); prune libswanted -- Dominic Dunlop 970113 |
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40 | # Warn about test failure due to old Berkeley db -- Dominic Dunlop 970105 |
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41 | # Do not use perl's malloc; SysV IPC OK -- Neil Cutcliffe, Tenon 961030 |
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42 | # File::Find's use of link count disabled by Dominic Dunlop 960528 |
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43 | # Perl's use of sigsetjmp etc. disabled by Dominic Dunlop 960521 |
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44 | # |
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45 | # Comments, questions, and improvements welcome! |
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46 | # |
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47 | # MachTen 4.1.1's support for shadow password file access is incomplete: |
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48 | # disable its use completely. |
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49 | d_endspent=${d_endspent:-undef} |
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50 | d_getspent=${d_getspent:-undef} |
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51 | d_getspnam=${d_getspnam:-undef} |
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52 | d_setspent=${d_setspent:-undef} |
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53 | |
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54 | # MachTen 4.1.1 does support dynamic loading, but perl doesn't |
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55 | # know how to use it yet. |
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56 | usedl=${usedl:-undef} |
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57 | |
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58 | # MachTen 4.1.1 may have an unhelpful hack in /usr/include/signal.h. |
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59 | # Undo it if so. |
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60 | if grep NOTDEF_MACHTEN /usr/include/signal.h > /dev/null |
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61 | then |
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62 | ccflags="$ccflags -DNOTDEF_MACHTEN" |
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63 | fi |
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64 | |
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65 | # Power MachTen is a real memory system and its standard malloc |
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66 | # has been optimized for this. Using this malloc instead of Perl's |
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67 | # malloc may result in significant memory savings. In particular, |
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68 | # unlike most UNIX memory allocation subsystems, MachTen's free() |
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69 | # really does return unneeded process data memory to the system. |
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70 | # However, MachTen's malloc() is woefully slow -- maybe 100 times |
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71 | # slower than perl's own, so perl's own is usually the better |
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72 | # choice. In order to use perl's malloc(), the sbrk() system call |
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73 | # must be simulated using MachTen's malloc(). See malloc.c for |
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74 | # precise details of how this is achieved. Recent improvements |
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75 | # to perl's malloc() currently crash MachTen, and so are disabled |
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76 | # by -DPLAIN_MALLOC and -DNO_FANCY_MALLOC. |
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77 | usemymalloc=${usemymalloc:-y} |
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78 | |
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79 | # Older versions of MachTen malloc() data on a two-byte boundary, which |
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80 | # works, but slows down operations on long, float and double data. |
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81 | # Perl's malloc() can compensate if SYSTEM_ALLOC_ALIGNMENT is suitably |
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82 | # defined. |
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83 | if expr "$osvers" \< "4.1" >/dev/null |
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84 | then |
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85 | system_alloc_alignment=" -DSYSTEM_ALLOC_ALIGNMENT=2" |
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86 | fi |
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87 | # Do not wrap the following long line |
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88 | malloc_cflags='ccflags="$ccflags -DPLAIN_MALLOC -DNO_FANCY_MALLOC -DUSE_PERL_SBRK$system_alloc_alignment"' |
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89 | |
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90 | # When MachTen does a fork(), it immediately copies the whole of |
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91 | # the parent process' data space for the child. This can be |
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92 | # expensive. Using vfork() where appropriate avoids this cost. |
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93 | d_vfork=${d_vfork:-define} |
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94 | |
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95 | # Specify a high level of optimization (-O3 wouldn't do much more) |
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96 | optimize=${optimize:--O2 -fomit-frame-pointer} |
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97 | |
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98 | # Make symbol table listings les voluminous |
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99 | nmopts=-gp |
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100 | |
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101 | # Set reg_infty -- the maximum allowable number of repeats in regular |
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102 | # expressions such as /a{1,$max_repeats}/, and the maximum number of |
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103 | # times /a*/ will match. Setting this too high without having a stack |
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104 | # large enough to accommodate deep recursion in the regular expression |
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105 | # engine allows perl to crash your Mac due to stack overrun if it |
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106 | # encounters a pathological regular expression. The default is a |
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107 | # compromise between capability and required stack size (see below). |
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108 | # You may override the default value from the Configure command-line |
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109 | # like this: |
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110 | # |
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111 | # Configure -Dreg_infty=16368 ... |
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112 | |
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113 | reg_infty=${reg_infty:-2047} |
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114 | |
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115 | # If you want to have many perl processes active simultaneously -- |
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116 | # processing CGI forms -- for example, you should opt for a small stack. |
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117 | # For safety, you should set reg_infty no larger than the corresponding |
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118 | # value given in this table: |
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119 | # |
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120 | # Stack size reg_infty value supported |
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121 | # ---------- ------------------------- |
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122 | # 128k 2**8-1 (256) |
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123 | # 256k 2**9-1 (511) |
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124 | # 512k 2**10-1 (1023) |
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125 | # 1M 2**11-1 (2047) |
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126 | # ... |
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127 | # 16M 2**15-1 (32767) (perl's default value) |
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128 | |
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129 | # This script selects a safe stack size based on the value of reg_infty |
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130 | # specified above. However, you may choose to take a risk and set |
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131 | # stack size lower: pathological regular expressions are rare in real-world |
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132 | # programs. But be aware that, if perl does encounter one, it WILL |
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133 | # crash your system. Do not set stack size lower than 96k unless |
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134 | # you want perl's installation tests ( make test ) to crash your system. |
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135 | # |
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136 | # You may override the default value from the Configure command-line |
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137 | # by specifying the required size in kilobytes like this: |
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138 | # |
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139 | # Configure -Dstack_size=96 |
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140 | |
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141 | if [ "X$stack_size" = 'X' ] |
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142 | then |
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143 | stack_size=128 |
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144 | X=`expr $reg_infty / 256` |
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145 | |
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146 | while [ $X -gt 0 ] |
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147 | do |
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148 | X=`expr $X / 2` |
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149 | stack_size=`expr $stack_size \* 2` |
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150 | done |
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151 | X=`expr $stack_size \* 1024` |
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152 | fi |
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153 | |
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154 | ldflags="$ldflags -Xlstack=$X" |
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155 | ccflags="$ccflags -DREG_INFTY=$reg_infty" |
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156 | |
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157 | # Install in /usr/local by default |
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158 | prefix='/usr/local' |
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159 | |
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160 | # At least on PowerMac, doubles must be aligned on 8 byte boundaries. |
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161 | # I don't know if this is true for all MachTen systems, or how to |
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162 | # determine this automatically. |
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163 | alignbytes=8 |
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164 | |
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165 | # 4.0.2 and earlier had a problem with perl's use of sigsetjmp and |
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166 | # friends. Use setjmp and friends instead. |
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167 | expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef' |
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168 | |
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169 | # System V IPC before MachTen 4.1.4 is incomplete (missing msg function |
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170 | # prototypes, no ftok()), buggy (semctl(.., .., IPC_STATUS, ..) hangs |
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171 | # system), and undocumented. Claim it's not there at all before 4.1.4. |
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172 | if expr "$osvers" \< "4.1.4" >/dev/null |
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173 | then |
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174 | d_msg=${d_msg:-undef} |
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175 | d_sem=${d_sem:-undef} |
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176 | d_shm=${d_shm:-undef} |
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177 | fi |
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178 | |
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179 | |
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180 | # As of MachTen 4.1.4 the msg* and shm* are in libc but unimplemented |
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181 | # (an attempt to use them causes a runtime error) |
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182 | # XXX Configure probe for really functional msg*() is needed XXX |
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183 | # XXX Configure probe for really functional shm*() is needed XXX |
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184 | if test "$d_msg" = ""; then |
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185 | d_msgget=${d_msgget:-undef} |
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186 | d_msgctl=${d_msgctl:-undef} |
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187 | d_msgsnd=${d_msgsnd:-undef} |
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188 | d_msgrcv=${d_msgrcv:-undef} |
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189 | case "$d_msgget$d_msgsnd$d_msgctl$d_msgrcv" in |
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190 | *"undef"*) d_msg="$undef" ;; |
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191 | esac |
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192 | fi |
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193 | if test "$d_shm" = ""; then |
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194 | d_shmat=${d_shmat:-undef} |
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195 | d_shmdt=${d_shmdt:-undef} |
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196 | d_shmget=${d_shmget:-undef} |
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197 | d_shmctl=${d_shmctl:-undef} |
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198 | case "$d_shmat$d_shmctl$d_shmdt$d_shmget" in |
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199 | *"undef"*) d_shm="$undef" ;; |
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200 | esac |
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201 | fi |
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202 | |
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203 | # Get rid of some extra libs which it takes Configure a tediously |
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204 | # long time never to find on MachTen, or which break perl |
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205 | set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \ |
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206 | -e 's/ inet / /' -e 's/ nsl / /' -e 's/ nm / /' -e 's/ malloc / /' \ |
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207 | -e 's/ ld / /' -e 's/ sun / /' -e 's/ posix / /' \ |
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208 | -e 's/ cposix / /' -e 's/ crypt / /' -e 's/ dl / /' -e 's/ dld / /' \ |
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209 | -e 's/ ucb / /' -e 's/ bsd / /' -e 's/ BSD / /' -e 's/ PW / /'` |
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210 | shift |
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211 | libswanted="$*" |
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212 | |
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213 | # While link counts on MachTen 4.1's fast file systems work correctly, |
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214 | # on Macintosh Heirarchical File Systems, (and on HFS+) |
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215 | # MachTen always reports ony two links to directories, even if they |
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216 | # contain subdirectories. Consequently, we use this variable to stop |
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217 | # File::Find using the link count to determine whether there are |
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218 | # subdirectories to be searched. This will generate a harmless message: |
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219 | # Hmm...You had some extra variables I don't know about...I'll try to keep 'em. |
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220 | # Propagating recommended variable dont_use_nlink |
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221 | dont_use_nlink=define |
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222 | |
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223 | cat <<EOM >&4 |
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224 | |
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225 | During Configure, you may see the message |
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226 | |
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227 | *** WHOA THERE!!! *** |
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228 | The recommended value for \$d_msg on this machine was "undef"! |
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229 | Keep the recommended value? [y] |
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230 | |
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231 | as well as similar messages concerning \$d_sem and \$d_shm. Select the |
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232 | default answers: MachTen 4.1 appears to provide System V IPC support, |
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233 | but it is incomplete and buggy: perl should be built without it. |
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234 | |
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235 | Similarly, when you see |
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236 | |
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237 | *** WHOA THERE!!! *** |
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238 | The recommended value for \$d_vfork on this machine was "define"! |
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239 | Keep the recommended value? [y] |
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240 | |
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241 | select the default answer: vfork() works, and avoids expensive data |
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242 | copying. |
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243 | |
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244 | You may also see "WHOA THERE!!!" messages concerning \$d_endspent, |
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245 | \$d_getspent, \$d_getspnam and \$d_setspent. In all cases, select the |
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246 | default answer: MachTen's support for shadow password file access is |
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247 | incomplete, and should not be used. |
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248 | |
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249 | At the end of Configure, you will see a harmless message |
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250 | |
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251 | Hmm...You had some extra variables I don't know about...I'll try to keep 'em. |
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252 | Propagating recommended variable dont_use_nlink |
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253 | Propagating recommended variable nmopts |
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254 | Propagating recommended variable malloc_cflags... |
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255 | Propagating recommended variable reg_infty |
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256 | Propagating recommended variable system_alloc_alignment |
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257 | Read the File::Find documentation for more information about dont_use_nlink |
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258 | |
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259 | Your perl will be built with a stack size of ${stack_size}k and a regular |
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260 | expression repeat count limit of $reg_infty. If you want alternative |
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261 | values, see the file hints/machten.sh for advice on how to change them. |
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262 | |
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263 | Tests |
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264 | io/fs test 4 and |
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265 | op/stat test 3 |
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266 | may fail since MachTen may not return a useful nlinks field to stat |
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267 | on directories. |
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268 | |
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269 | EOM |
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270 | expr "$osvers" \< "4.1" >/dev/null && test -r ./broken-db.msg && \ |
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271 | . ./broken-db.msg |
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272 | |
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273 | unset stack_size X |
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