Mercurial > repo
annotate perl-5.22.2/install_lib.pl @ 8045:a16537d2fe07
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author | HackBot |
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date | Sat, 14 May 2016 14:54:38 +0000 |
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rev | line source |
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8045
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1 #!perl |
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2 |
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3 # Initialisation code and subroutines shared between installperl and installman |
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4 # Probably installhtml needs to join the club. |
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5 |
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6 use strict; |
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7 use vars qw($Is_VMS $Is_W32 $Is_OS2 $Is_Cygwin $Is_Darwin $Is_NetWare |
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8 %opts $packlist); |
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9 use subs qw(unlink link chmod); |
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10 require File::Path; |
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11 require File::Copy; |
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12 |
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13 BEGIN { |
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14 require Config; |
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15 if ($Config::Config{userelocatableinc}) { |
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16 # This might be a considered a hack. Need to get information about the |
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17 # configuration from Config.pm *before* Config.pm expands any .../ |
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18 # prefixes. |
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19 # |
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20 # So we set $^X to pretend that we're the already installed perl, so |
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21 # Config.pm does its ... expansion off that location. |
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22 |
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23 my $location = $Config::Config{initialinstalllocation}; |
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24 die <<'OS' unless defined $location; |
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25 $Config{initialinstalllocation} is not defined - can't install a relocatable |
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26 perl without this. |
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27 OS |
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28 $^X = "$location/perl"; |
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29 # And then remove all trace of ever having loaded Config.pm, so that |
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30 # it will reload with the revised $^X |
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31 undef %Config::; |
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32 delete $INC{"Config.pm"}; |
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33 delete $INC{"Config_heavy.pl"}; |
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34 delete $INC{"Config_git.pl"}; |
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35 # You never saw us. We weren't here. |
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36 |
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37 require Config; |
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38 } |
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39 Config->import; |
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40 } |
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41 |
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42 if ($Config{d_umask}) { |
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43 umask(022); # umasks like 077 aren't that useful for installations |
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44 } |
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45 |
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46 $Is_VMS = $^O eq 'VMS'; |
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47 $Is_W32 = $^O eq 'MSWin32'; |
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48 $Is_OS2 = $^O eq 'os2'; |
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49 $Is_Cygwin = $^O eq 'cygwin'; |
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50 $Is_Darwin = $^O eq 'darwin'; |
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51 $Is_NetWare = $Config{osname} eq 'NetWare'; |
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52 |
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53 sub unlink { |
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54 my(@names) = @_; |
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55 my($cnt) = 0; |
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56 |
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57 return scalar(@names) if $Is_VMS; |
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58 |
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59 foreach my $name (@names) { |
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60 next unless -e $name; |
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61 chmod 0777, $name if ($Is_OS2 || $Is_W32 || $Is_Cygwin || $Is_NetWare); |
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62 print " unlink $name\n" if $opts{verbose}; |
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63 ( CORE::unlink($name) and ++$cnt |
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64 or warn "Couldn't unlink $name: $!\n" ) unless $opts{notify}; |
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65 } |
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66 return $cnt; |
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67 } |
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68 |
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69 sub link { |
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70 my($from,$to) = @_; |
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71 my($success) = 0; |
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72 |
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73 my $xfrom = $from; |
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74 $xfrom =~ s/^\Q$opts{destdir}\E// if $opts{destdir}; |
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75 my $xto = $to; |
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76 $xto =~ s/^\Q$opts{destdir}\E// if $opts{destdir}; |
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77 print $opts{verbose} ? " ln $xfrom $xto\n" : " $xto\n" |
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78 unless $opts{silent}; |
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79 eval { |
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80 CORE::link($from, $to) |
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81 ? $success++ |
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82 : ($from =~ m#^/afs/# || $to =~ m#^/afs/#) |
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83 ? die "AFS" # okay inside eval {} |
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84 : die "Couldn't link $from to $to: $!\n" |
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85 unless $opts{notify}; |
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86 $packlist->{$xto} = { from => $xfrom, type => 'link' }; |
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87 }; |
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88 if ($@) { |
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89 warn "Replacing link() with File::Copy::copy(): $@"; |
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90 print $opts{verbose} ? " cp $from $xto\n" : " $xto\n" |
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91 unless $opts{silent}; |
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92 print " creating new version of $xto\n" |
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93 if $Is_VMS and -e $to and !$opts{silent}; |
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94 unless ($opts{notify} or File::Copy::copy($from, $to) and ++$success) { |
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95 # Might have been that F::C::c can't overwrite the target |
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96 warn "Couldn't copy $from to $to: $!\n" |
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97 unless -f $to and (chmod(0666, $to), unlink $to) |
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98 and File::Copy::copy($from, $to) and ++$success; |
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99 } |
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100 $packlist->{$xto} = { type => 'file' }; |
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101 } |
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102 $success; |
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103 } |
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104 |
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105 sub chmod { |
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106 my($mode,$name) = @_; |
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107 |
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108 return if ($^O eq 'dos'); |
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109 printf " chmod %o %s\n", $mode, $name if $opts{verbose}; |
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110 CORE::chmod($mode,$name) |
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111 || warn sprintf("Couldn't chmod %o %s: $!\n", $mode, $name) |
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112 unless $opts{notify}; |
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113 } |
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114 |
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115 sub samepath { |
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116 my($p1, $p2) = @_; |
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117 |
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118 return (lc($p1) eq lc($p2)) if ($Is_W32 || $Is_NetWare); |
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119 |
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120 return 1 |
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121 if $p1 eq $p2; |
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122 |
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123 my ($dev1, $ino1) = stat $p1; |
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124 return 0 |
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125 unless defined $dev1; |
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126 my ($dev2, $ino2) = stat $p2; |
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127 |
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128 return $dev1 == $dev2 && $ino1 == $ino2; |
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129 } |
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130 |
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131 sub safe_rename { |
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132 my($from,$to) = @_; |
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133 if (-f $to and not unlink($to)) { |
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134 my($i); |
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135 for ($i = 1; $i < 50; $i++) { |
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136 last if rename($to, "$to.$i"); |
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137 } |
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138 warn("Cannot rename to '$to.$i': $!"), return 0 |
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139 if $i >= 50; # Give up! |
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140 } |
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141 link($from,$to) || return 0; |
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142 unlink($from); |
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143 } |
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144 |
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145 sub mkpath { |
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146 File::Path::mkpath(shift , $opts{verbose}, 0777) unless $opts{notify}; |
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147 } |
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148 |
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149 1; |