| 1 | #!./miniperl -w
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| 2 | use strict;
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| 3 | use vars qw(%Config $Config_SH_expanded);
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| 4 |
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| 5 | my $how_many_common = 22;
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| 6 |
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| 7 | # commonly used names to precache (and hence lookup fastest)
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| 8 | my %Common;
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| 9 |
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| 10 | while ($how_many_common--) {
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| 11 | $_ = <DATA>;
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| 12 | chomp;
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| 13 | /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
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| 14 | $Common{$1} = $1;
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| 15 | }
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| 16 |
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| 17 | # names of things which may need to have slashes changed to double-colons
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| 18 | my %Extensions = map {($_,$_)}
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| 19 | qw(dynamic_ext static_ext extensions known_extensions);
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| 20 |
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| 21 | # allowed opts as well as specifies default and initial values
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| 22 | my %Allowed_Opts = (
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| 23 | 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM
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| 24 | 'glossary' => 1, # --no-glossary - no glossary file inclusion,
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| 25 | # for compactness
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| 26 | 'heavy' => '', # pathname of the Config_heavy.pl file
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| 27 | );
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| 28 |
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| 29 | sub opts {
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| 30 | # user specified options
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| 31 | my %given_opts = (
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| 32 | # --opt=smth
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| 33 | (map {/^--([\-_\w]+)=(.*)$/} @ARGV),
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| 34 | # --opt --no-opt --noopt
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| 35 | (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV),
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| 36 | );
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| 37 |
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| 38 | my %opts = (%Allowed_Opts, %given_opts);
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| 39 |
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| 40 | for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) {
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| 41 | die "option '$opt' is not recognized";
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| 42 | }
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| 43 | @ARGV = grep {!/^--/} @ARGV;
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| 44 |
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| 45 | return %opts;
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| 46 | }
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| 47 |
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| 48 |
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| 49 | my %Opts = opts();
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| 50 |
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| 51 | my ($Config_PM, $Config_heavy);
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| 52 | my $Glossary = $ARGV[1] || 'Porting/Glossary';
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| 53 |
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| 54 | if ($Opts{cross}) {
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| 55 | # creating cross-platform config file
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| 56 | mkdir "xlib";
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| 57 | mkdir "xlib/$Opts{cross}";
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| 58 | $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm";
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| 59 | }
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| 60 | else {
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| 61 | $Config_PM = $ARGV[0] || 'lib/Config.pm';
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| 62 | }
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| 63 | if ($Opts{heavy}) {
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| 64 | $Config_heavy = $Opts{heavy};
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| 65 | }
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| 66 | else {
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| 67 | ($Config_heavy = $Config_PM) =~ s!\.pm$!_heavy.pl!;
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| 68 | die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'"
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| 69 | if $Config_heavy eq $Config_PM;
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| 70 | }
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| 71 |
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| 72 | open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n";
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| 73 | open CONFIG_HEAVY, ">$Config_heavy" or die "Can't open $Config_heavy: $!\n";
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| 74 |
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| 75 | print CONFIG_HEAVY <<'ENDOFBEG';
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| 76 | # This file was created by configpm when Perl was built. Any changes
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| 77 | # made to this file will be lost the next time perl is built.
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| 78 |
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| 79 | package Config;
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| 80 | use strict;
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| 81 | # use warnings; Pulls in Carp
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| 82 | # use vars pulls in Carp
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| 83 | ENDOFBEG
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| 84 |
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| 85 | my $myver = sprintf "v%vd", $^V;
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| 86 |
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| 87 | printf CONFIG <<'ENDOFBEG', ($myver) x 3;
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| 88 | # This file was created by configpm when Perl was built. Any changes
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| 89 | # made to this file will be lost the next time perl is built.
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| 90 |
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| 91 | package Config;
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| 92 | use strict;
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| 93 | # use warnings; Pulls in Carp
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| 94 | # use vars pulls in Carp
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| 95 | @Config::EXPORT = qw(%%Config);
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| 96 | @Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re);
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| 97 |
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| 98 | # Need to stub all the functions to make code such as print Config::config_sh
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| 99 | # keep working
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| 100 |
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| 101 | sub myconfig;
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| 102 | sub config_sh;
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| 103 | sub config_vars;
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| 104 | sub config_re;
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| 105 |
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| 106 | my %%Export_Cache = map {($_ => 1)} (@Config::EXPORT, @Config::EXPORT_OK);
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| 107 |
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| 108 | our %%Config;
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| 109 |
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| 110 | # Define our own import method to avoid pulling in the full Exporter:
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| 111 | sub import {
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| 112 | my $pkg = shift;
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| 113 | @_ = @Config::EXPORT unless @_;
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| 114 |
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| 115 | my @funcs = grep $_ ne '%%Config', @_;
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| 116 | my $export_Config = @funcs < @_ ? 1 : 0;
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| 117 |
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| 118 | no strict 'refs';
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| 119 | my $callpkg = caller(0);
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| 120 | foreach my $func (@funcs) {
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| 121 | die sprintf qq{"%%s" is not exported by the %%s module\n},
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| 122 | $func, __PACKAGE__ unless $Export_Cache{$func};
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| 123 | *{$callpkg.'::'.$func} = \&{$func};
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| 124 | }
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| 125 |
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| 126 | *{"$callpkg\::Config"} = \%%Config if $export_Config;
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| 127 | return;
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| 128 | }
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| 129 |
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| 130 | die "Perl lib version (%s) doesn't match executable version ($])"
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| 131 | unless $^V;
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| 132 |
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| 133 | $^V eq %s
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| 134 | or die "Perl lib version (%s) doesn't match executable version (" .
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| 135 | sprintf("v%%vd",$^V) . ")";
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| 136 |
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| 137 | ENDOFBEG
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| 138 |
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| 139 |
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| 140 | my @non_v = ();
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| 141 | my @v_others = ();
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| 142 | my $in_v = 0;
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| 143 | my %Data = ();
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| 144 |
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| 145 |
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| 146 | my %seen_quotes;
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| 147 | {
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| 148 | my ($name, $val);
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| 149 | open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!";
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| 150 | while (<CONFIG_SH>) {
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| 151 | next if m:^#!/bin/sh:;
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| 152 |
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| 153 | # Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
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| 154 | s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/;
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| 155 | my($k, $v) = ($1, $2);
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| 156 |
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| 157 | # grandfather PATCHLEVEL and SUBVERSION and CONFIG
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| 158 | if ($k) {
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| 159 | if ($k eq 'PERL_VERSION') {
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| 160 | push @v_others, "PATCHLEVEL='$v'\n";
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| 161 | }
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| 162 | elsif ($k eq 'PERL_SUBVERSION') {
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| 163 | push @v_others, "SUBVERSION='$v'\n";
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| 164 | }
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| 165 | elsif ($k eq 'PERL_CONFIG_SH') {
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| 166 | push @v_others, "CONFIG='$v'\n";
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | # We can delimit things in config.sh with either ' or ".
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| 171 | unless ($in_v or m/^(\w+)=(['"])(.*\n)/){
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| 172 | push(@non_v, "#$_"); # not a name='value' line
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| 173 | next;
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| 174 | }
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| 175 | my $quote = $2;
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| 176 | if ($in_v) {
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| 177 | $val .= $_;
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| 178 | }
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| 179 | else {
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| 180 | ($name,$val) = ($1,$3);
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| 181 | }
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| 182 | $in_v = $val !~ /$quote\n/;
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| 183 | next if $in_v;
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| 184 |
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| 185 | s,/,::,g if $Extensions{$name};
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| 186 |
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| 187 | $val =~ s/$quote\n?\z//;
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| 188 |
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| 189 | my $line = "$name=$quote$val$quote\n";
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| 190 | push(@v_others, $line);
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| 191 | $seen_quotes{$quote}++;
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| 192 | }
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| 193 | close CONFIG_SH;
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| 194 | }
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| 195 |
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| 196 | # This is somewhat grim, but I want the code for parsing config.sh here and
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| 197 | # now so that I can expand $Config{ivsize} and $Config{ivtype}
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| 198 |
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| 199 | my $fetch_string = <<'EOT';
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| 200 |
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| 201 | # Search for it in the big string
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| 202 | sub fetch_string {
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| 203 | my($self, $key) = @_;
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| 204 |
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| 205 | EOT
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| 206 |
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| 207 | if ($seen_quotes{'"'}) {
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| 208 | # We need the full ' and " code
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| 209 | $fetch_string .= <<'EOT';
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| 210 | my $quote_type = "'";
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| 211 | my $marker = "$key=";
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| 212 |
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| 213 | # Check for the common case, ' delimited
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| 214 | my $start = index($Config_SH_expanded, "\n$marker$quote_type");
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| 215 | # If that failed, check for " delimited
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| 216 | if ($start == -1) {
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| 217 | $quote_type = '"';
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| 218 | $start = index($Config_SH_expanded, "\n$marker$quote_type");
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| 219 | }
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| 220 | EOT
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| 221 | } else {
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| 222 | $fetch_string .= <<'EOT';
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| 223 | # We only have ' delimted.
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| 224 | my $start = index($Config_SH_expanded, "\n$key=\'");
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| 225 | EOT
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| 226 | }
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| 227 | $fetch_string .= <<'EOT';
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| 228 | # Start can never be -1 now, as we've rigged the long string we're
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| 229 | # searching with an initial dummy newline.
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| 230 | return undef if $start == -1;
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| 231 |
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| 232 | $start += length($key) + 3;
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| 233 |
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| 234 | EOT
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| 235 | if (!$seen_quotes{'"'}) {
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| 236 | # Don't need the full ' and " code, or the eval expansion.
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| 237 | $fetch_string .= <<'EOT';
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| 238 | my $value = substr($Config_SH_expanded, $start,
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| 239 | index($Config_SH_expanded, "'\n", $start)
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| 240 | - $start);
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| 241 | EOT
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| 242 | } else {
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| 243 | $fetch_string .= <<'EOT';
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| 244 | my $value = substr($Config_SH_expanded, $start,
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| 245 | index($Config_SH_expanded, "$quote_type\n", $start)
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| 246 | - $start);
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| 247 |
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| 248 | # If we had a double-quote, we'd better eval it so escape
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| 249 | # sequences and such can be interpolated. Since the incoming
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| 250 | # value is supposed to follow shell rules and not perl rules,
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| 251 | # we escape any perl variable markers
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| 252 | if ($quote_type eq '"') {
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| 253 | $value =~ s/\$/\\\$/g;
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| 254 | $value =~ s/\@/\\\@/g;
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| 255 | eval "\$value = \"$value\"";
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| 256 | }
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| 257 | EOT
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| 258 | }
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| 259 | $fetch_string .= <<'EOT';
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| 260 | # So we can say "if $Config{'foo'}".
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| 261 | $value = undef if $value eq 'undef';
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| 262 | $self->{$key} = $value; # cache it
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| 263 | }
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| 264 | EOT
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| 265 |
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| 266 | eval $fetch_string;
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| 267 | die if $@;
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| 268 |
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| 269 | # Calculation for the keys for byteorder
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| 270 | # This is somewhat grim, but I need to run fetch_string here.
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| 271 | our $Config_SH_expanded = join "\n", '', @v_others;
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| 272 |
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| 273 | my $t = fetch_string ({}, 'ivtype');
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| 274 | my $s = fetch_string ({}, 'ivsize');
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| 275 |
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| 276 | # byteorder does exist on its own but we overlay a virtual
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| 277 | # dynamically recomputed value.
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| 278 |
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| 279 | # However, ivtype and ivsize will not vary for sane fat binaries
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| 280 |
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| 281 | my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
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| 282 |
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| 283 | my $byteorder_code;
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| 284 | if ($s == 4 || $s == 8) {
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| 285 | my $list = join ',', reverse(2..$s);
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| 286 | my $format = 'a'x$s;
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| 287 | $byteorder_code = <<"EOT";
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| 288 |
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| 289 | my \$i = 0;
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| 290 | foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 }
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| 291 | \$i |= ord(1);
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| 292 | our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
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| 293 | EOT
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| 294 | } else {
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| 295 | $byteorder_code = "our \$byteorder = '?'x$s;\n";
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| 296 | }
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| 297 |
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| 298 | print CONFIG_HEAVY @non_v, "\n";
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| 299 |
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| 300 | # copy config summary format from the myconfig.SH script
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| 301 | print CONFIG_HEAVY "our \$summary = <<'!END!';\n";
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| 302 | open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!";
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| 303 | 1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
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| 304 | do { print CONFIG_HEAVY $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
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| 305 | close(MYCONFIG);
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| 306 |
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| 307 | print CONFIG_HEAVY "\n!END!\n", <<'EOT';
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| 308 | my $summary_expanded;
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| 309 |
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| 310 | sub myconfig {
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| 311 | return $summary_expanded if $summary_expanded;
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| 312 | ($summary_expanded = $summary) =~ s{\$(\w+)}
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| 313 | { my $c = $Config::Config{$1}; defined($c) ? $c : 'undef' }ge;
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| 314 | $summary_expanded;
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| 315 | }
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| 316 |
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| 317 | local *_ = \my $a;
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| 318 | $_ = <<'!END!';
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| 319 | EOT
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| 320 |
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| 321 | print CONFIG_HEAVY join('', sort @v_others), "!END!\n";
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| 322 |
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| 323 | # Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of
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| 324 | # the precached keys
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| 325 | if ($Common{byteorder}) {
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| 326 | print CONFIG $byteorder_code;
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| 327 | } else {
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| 328 | print CONFIG_HEAVY $byteorder_code;
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| 329 | }
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| 330 |
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| 331 | print CONFIG_HEAVY <<'EOT';
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| 332 | s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
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| 333 |
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| 334 | my $config_sh_len = length $_;
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| 335 |
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| 336 | our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL';
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| 337 | EOT
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| 338 |
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| 339 | foreach my $prefix (qw(ccflags ldflags)) {
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| 340 | my $value = fetch_string ({}, $prefix);
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| 341 | my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles");
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| 342 | $value =~ s/\Q$withlargefiles\E\b//;
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| 343 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
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| 344 | }
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| 345 |
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| 346 | foreach my $prefix (qw(libs libswanted)) {
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| 347 | my $value = fetch_string ({}, $prefix);
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| 348 | my @lflibswanted
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| 349 | = split(' ', fetch_string ({}, 'libswanted_uselargefiles'));
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| 350 | if (@lflibswanted) {
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| 351 | my %lflibswanted;
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| 352 | @lflibswanted{@lflibswanted} = ();
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| 353 | if ($prefix eq 'libs') {
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| 354 | my @libs = grep { /^-l(.+)/ &&
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| 355 | not exists $lflibswanted{$1} }
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| 356 | split(' ', fetch_string ({}, 'libs'));
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| 357 | $value = join(' ', @libs);
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| 358 | } else {
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| 359 | my @libswanted = grep { not exists $lflibswanted{$_} }
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| 360 | split(' ', fetch_string ({}, 'libswanted'));
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| 361 | $value = join(' ', @libswanted);
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| 362 | }
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| 363 | }
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| 364 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
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| 365 | }
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| 366 |
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| 367 | print CONFIG_HEAVY "EOVIRTUAL\n";
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| 368 |
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| 369 | print CONFIG_HEAVY $fetch_string;
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| 370 |
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| 371 | print CONFIG <<'ENDOFEND';
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| 372 |
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| 373 | sub FETCH {
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| 374 | my($self, $key) = @_;
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| 375 |
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| 376 | # check for cached value (which may be undef so we use exists not defined)
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| 377 | return $self->{$key} if exists $self->{$key};
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| 378 |
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| 379 | return $self->fetch_string($key);
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| 380 | }
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| 381 | ENDOFEND
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| 382 |
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| 383 | print CONFIG_HEAVY <<'ENDOFEND';
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| 384 |
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| 385 | my $prevpos = 0;
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| 386 |
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| 387 | sub FIRSTKEY {
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| 388 | $prevpos = 0;
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| 389 | substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 );
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| 390 | }
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| 391 |
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| 392 | sub NEXTKEY {
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| 393 | ENDOFEND
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| 394 | if ($seen_quotes{'"'}) {
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| 395 | print CONFIG_HEAVY <<'ENDOFEND';
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| 396 | # Find out how the current key's quoted so we can skip to its end.
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| 397 | my $quote = substr($Config_SH_expanded,
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| 398 | index($Config_SH_expanded, "=", $prevpos)+1, 1);
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| 399 | my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2;
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| 400 | ENDOFEND
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| 401 | } else {
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| 402 | # Just ' quotes, so it's much easier.
|
|---|
| 403 | print CONFIG_HEAVY <<'ENDOFEND';
|
|---|
| 404 | my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2;
|
|---|
| 405 | ENDOFEND
|
|---|
| 406 | }
|
|---|
| 407 | print CONFIG_HEAVY <<'ENDOFEND';
|
|---|
| 408 | my $len = index($Config_SH_expanded, "=", $pos) - $pos;
|
|---|
| 409 | $prevpos = $pos;
|
|---|
| 410 | $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef;
|
|---|
| 411 | }
|
|---|
| 412 |
|
|---|
| 413 | sub EXISTS {
|
|---|
| 414 | return 1 if exists($_[0]->{$_[1]});
|
|---|
| 415 |
|
|---|
| 416 | return(index($Config_SH_expanded, "\n$_[1]='") != -1
|
|---|
| 417 | ENDOFEND
|
|---|
| 418 | if ($seen_quotes{'"'}) {
|
|---|
| 419 | print CONFIG_HEAVY <<'ENDOFEND';
|
|---|
| 420 | or index($Config_SH_expanded, "\n$_[1]=\"") != -1
|
|---|
| 421 | ENDOFEND
|
|---|
| 422 | }
|
|---|
| 423 | print CONFIG_HEAVY <<'ENDOFEND';
|
|---|
| 424 | );
|
|---|
| 425 | }
|
|---|
| 426 |
|
|---|
| 427 | sub STORE { die "\%Config::Config is read-only\n" }
|
|---|
| 428 | *DELETE = \&STORE;
|
|---|
| 429 | *CLEAR = \&STORE;
|
|---|
| 430 |
|
|---|
| 431 |
|
|---|
| 432 | sub config_sh {
|
|---|
| 433 | substr $Config_SH_expanded, 1, $config_sh_len;
|
|---|
| 434 | }
|
|---|
| 435 |
|
|---|
| 436 | sub config_re {
|
|---|
| 437 | my $re = shift;
|
|---|
| 438 | return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/,
|
|---|
| 439 | $Config_SH_expanded;
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | sub config_vars {
|
|---|
| 443 | # implements -V:cfgvar option (see perlrun -V:)
|
|---|
| 444 | foreach (@_) {
|
|---|
| 445 | # find optional leading, trailing colons; and query-spec
|
|---|
| 446 | my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft,
|
|---|
| 447 | # map colon-flags to print decorations
|
|---|
| 448 | my $prfx = $notag ? '': "$qry="; # tag-prefix for print
|
|---|
| 449 | my $lnend = $lncont ? ' ' : ";\n"; # line ending for print
|
|---|
| 450 |
|
|---|
| 451 | # all config-vars are by definition \w only, any \W means regex
|
|---|
| 452 | if ($qry =~ /\W/) {
|
|---|
| 453 | my @matches = config_re($qry);
|
|---|
| 454 | print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag;
|
|---|
| 455 | print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag;
|
|---|
| 456 | } else {
|
|---|
| 457 | my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry}
|
|---|
| 458 | : 'UNKNOWN';
|
|---|
| 459 | $v = 'undef' unless defined $v;
|
|---|
| 460 | print "${prfx}'${v}'$lnend";
|
|---|
| 461 | }
|
|---|
| 462 | }
|
|---|
| 463 | }
|
|---|
| 464 |
|
|---|
| 465 | # Called by the real AUTOLOAD
|
|---|
| 466 | sub launcher {
|
|---|
| 467 | undef &AUTOLOAD;
|
|---|
| 468 | goto \&$Config::AUTOLOAD;
|
|---|
| 469 | }
|
|---|
| 470 |
|
|---|
| 471 | 1;
|
|---|
| 472 | ENDOFEND
|
|---|
| 473 |
|
|---|
| 474 | if ($^O eq 'os2') {
|
|---|
| 475 | print CONFIG <<'ENDOFSET';
|
|---|
| 476 | my %preconfig;
|
|---|
| 477 | #if ($OS2::is_aout) {
|
|---|
| 478 | # my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m;
|
|---|
| 479 | # for (split ' ', $value) {
|
|---|
| 480 | # ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m;
|
|---|
| 481 | # $preconfig{$_} = $v eq 'undef' ? undef : $v;
|
|---|
| 482 | # }
|
|---|
| 483 | #}
|
|---|
| 484 | #$preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't
|
|---|
| 485 | sub TIEHASH { bless {%preconfig} }
|
|---|
| 486 | ENDOFSET
|
|---|
| 487 | # Extract the name of the DLL from the makefile to avoid duplication
|
|---|
| 488 | my ($f) = grep -r, qw(GNUMakefile Makefile);
|
|---|
| 489 | my $dll;
|
|---|
| 490 | if (open my $fh, '<', $f) {
|
|---|
| 491 | while (<$fh>) {
|
|---|
| 492 | $dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/;
|
|---|
| 493 | }
|
|---|
| 494 | }
|
|---|
| 495 | print CONFIG <<ENDOFSET if $dll;
|
|---|
| 496 | \$preconfig{dll_name} = '$dll';
|
|---|
| 497 | ENDOFSET
|
|---|
| 498 | } else {
|
|---|
| 499 | print CONFIG <<'ENDOFSET';
|
|---|
| 500 | sub TIEHASH {
|
|---|
| 501 | bless $_[1], $_[0];
|
|---|
| 502 | }
|
|---|
| 503 | ENDOFSET
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | foreach my $key (keys %Common) {
|
|---|
| 507 | my $value = fetch_string ({}, $key);
|
|---|
| 508 | # Is it safe on the LHS of => ?
|
|---|
| 509 | my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'";
|
|---|
| 510 | if (defined $value) {
|
|---|
| 511 | # Quote things for a '' string
|
|---|
| 512 | $value =~ s!\\!\\\\!g;
|
|---|
| 513 | $value =~ s!'!\\'!g;
|
|---|
| 514 | $value = "'$value'";
|
|---|
| 515 | } else {
|
|---|
| 516 | $value = "undef";
|
|---|
| 517 | }
|
|---|
| 518 | $Common{$key} = "$qkey => $value";
|
|---|
| 519 | }
|
|---|
| 520 |
|
|---|
| 521 | if ($Common{byteorder}) {
|
|---|
| 522 | $Common{byteorder} = 'byteorder => $byteorder';
|
|---|
| 523 | }
|
|---|
| 524 | my $fast_config = join '', map { " $_,\n" } sort values %Common;
|
|---|
| 525 |
|
|---|
| 526 | # Sanity check needed to stop an infite loop if Config_heavy.pl fails to define
|
|---|
| 527 | # &launcher for some reason (eg it got truncated)
|
|---|
| 528 | print CONFIG sprintf <<'ENDOFTIE', $fast_config;
|
|---|
| 529 |
|
|---|
| 530 | sub DESTROY { }
|
|---|
| 531 |
|
|---|
| 532 | sub AUTOLOAD {
|
|---|
| 533 | require 'Config_heavy.pl';
|
|---|
| 534 | goto \&launcher unless $Config::AUTOLOAD =~ /launcher$/;
|
|---|
| 535 | die "&Config::AUTOLOAD failed on $Config::AUTOLOAD";
|
|---|
| 536 | }
|
|---|
| 537 |
|
|---|
| 538 | # tie returns the object, so the value returned to require will be true.
|
|---|
| 539 | tie %%Config, 'Config', {
|
|---|
| 540 | %s};
|
|---|
| 541 | ENDOFTIE
|
|---|
| 542 |
|
|---|
| 543 |
|
|---|
| 544 | open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!";
|
|---|
| 545 | print CONFIG_POD <<'ENDOFTAIL';
|
|---|
| 546 | =head1 NAME
|
|---|
| 547 |
|
|---|
| 548 | Config - access Perl configuration information
|
|---|
| 549 |
|
|---|
| 550 | =head1 SYNOPSIS
|
|---|
| 551 |
|
|---|
| 552 | use Config;
|
|---|
| 553 | if ($Config{usethreads}) {
|
|---|
| 554 | print "has thread support\n"
|
|---|
| 555 | }
|
|---|
| 556 |
|
|---|
| 557 | use Config qw(myconfig config_sh config_vars config_re);
|
|---|
| 558 |
|
|---|
| 559 | print myconfig();
|
|---|
| 560 |
|
|---|
| 561 | print config_sh();
|
|---|
| 562 |
|
|---|
| 563 | print config_re();
|
|---|
| 564 |
|
|---|
| 565 | config_vars(qw(osname archname));
|
|---|
| 566 |
|
|---|
| 567 |
|
|---|
| 568 | =head1 DESCRIPTION
|
|---|
| 569 |
|
|---|
| 570 | The Config module contains all the information that was available to
|
|---|
| 571 | the C<Configure> program at Perl build time (over 900 values).
|
|---|
| 572 |
|
|---|
| 573 | Shell variables from the F<config.sh> file (written by Configure) are
|
|---|
| 574 | stored in the readonly-variable C<%Config>, indexed by their names.
|
|---|
| 575 |
|
|---|
| 576 | Values stored in config.sh as 'undef' are returned as undefined
|
|---|
| 577 | values. The perl C<exists> function can be used to check if a
|
|---|
| 578 | named variable exists.
|
|---|
| 579 |
|
|---|
| 580 | =over 4
|
|---|
| 581 |
|
|---|
| 582 | =item myconfig()
|
|---|
| 583 |
|
|---|
| 584 | Returns a textual summary of the major perl configuration values.
|
|---|
| 585 | See also C<-V> in L<perlrun/Switches>.
|
|---|
| 586 |
|
|---|
| 587 | =item config_sh()
|
|---|
| 588 |
|
|---|
| 589 | Returns the entire perl configuration information in the form of the
|
|---|
| 590 | original config.sh shell variable assignment script.
|
|---|
| 591 |
|
|---|
| 592 | =item config_re($regex)
|
|---|
| 593 |
|
|---|
| 594 | Like config_sh() but returns, as a list, only the config entries who's
|
|---|
| 595 | names match the $regex.
|
|---|
| 596 |
|
|---|
| 597 | =item config_vars(@names)
|
|---|
| 598 |
|
|---|
| 599 | Prints to STDOUT the values of the named configuration variable. Each is
|
|---|
| 600 | printed on a separate line in the form:
|
|---|
| 601 |
|
|---|
| 602 | name='value';
|
|---|
| 603 |
|
|---|
| 604 | Names which are unknown are output as C<name='UNKNOWN';>.
|
|---|
| 605 | See also C<-V:name> in L<perlrun/Switches>.
|
|---|
| 606 |
|
|---|
| 607 | =back
|
|---|
| 608 |
|
|---|
| 609 | =head1 EXAMPLE
|
|---|
| 610 |
|
|---|
| 611 | Here's a more sophisticated example of using %Config:
|
|---|
| 612 |
|
|---|
| 613 | use Config;
|
|---|
| 614 | use strict;
|
|---|
| 615 |
|
|---|
| 616 | my %sig_num;
|
|---|
| 617 | my @sig_name;
|
|---|
| 618 | unless($Config{sig_name} && $Config{sig_num}) {
|
|---|
| 619 | die "No sigs?";
|
|---|
| 620 | } else {
|
|---|
| 621 | my @names = split ' ', $Config{sig_name};
|
|---|
| 622 | @sig_num{@names} = split ' ', $Config{sig_num};
|
|---|
| 623 | foreach (@names) {
|
|---|
| 624 | $sig_name[$sig_num{$_}] ||= $_;
|
|---|
| 625 | }
|
|---|
| 626 | }
|
|---|
| 627 |
|
|---|
| 628 | print "signal #17 = $sig_name[17]\n";
|
|---|
| 629 | if ($sig_num{ALRM}) {
|
|---|
| 630 | print "SIGALRM is $sig_num{ALRM}\n";
|
|---|
| 631 | }
|
|---|
| 632 |
|
|---|
| 633 | =head1 WARNING
|
|---|
| 634 |
|
|---|
| 635 | Because this information is not stored within the perl executable
|
|---|
| 636 | itself it is possible (but unlikely) that the information does not
|
|---|
| 637 | relate to the actual perl binary which is being used to access it.
|
|---|
| 638 |
|
|---|
| 639 | The Config module is installed into the architecture and version
|
|---|
| 640 | specific library directory ($Config{installarchlib}) and it checks the
|
|---|
| 641 | perl version number when loaded.
|
|---|
| 642 |
|
|---|
| 643 | The values stored in config.sh may be either single-quoted or
|
|---|
| 644 | double-quoted. Double-quoted strings are handy for those cases where you
|
|---|
| 645 | need to include escape sequences in the strings. To avoid runtime variable
|
|---|
| 646 | interpolation, any C<$> and C<@> characters are replaced by C<\$> and
|
|---|
| 647 | C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$>
|
|---|
| 648 | or C<\@> in double-quoted strings unless you're willing to deal with the
|
|---|
| 649 | consequences. (The slashes will end up escaped and the C<$> or C<@> will
|
|---|
| 650 | trigger variable interpolation)
|
|---|
| 651 |
|
|---|
| 652 | =head1 GLOSSARY
|
|---|
| 653 |
|
|---|
| 654 | Most C<Config> variables are determined by the C<Configure> script
|
|---|
| 655 | on platforms supported by it (which is most UNIX platforms). Some
|
|---|
| 656 | platforms have custom-made C<Config> variables, and may thus not have
|
|---|
| 657 | some of the variables described below, or may have extraneous variables
|
|---|
| 658 | specific to that particular port. See the port specific documentation
|
|---|
| 659 | in such cases.
|
|---|
| 660 |
|
|---|
| 661 | ENDOFTAIL
|
|---|
| 662 |
|
|---|
| 663 | if ($Opts{glossary}) {
|
|---|
| 664 | open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
|
|---|
| 665 | }
|
|---|
| 666 | my %seen = ();
|
|---|
| 667 | my $text = 0;
|
|---|
| 668 | $/ = '';
|
|---|
| 669 |
|
|---|
| 670 | sub process {
|
|---|
| 671 | if (s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m) {
|
|---|
| 672 | my $c = substr $1, 0, 1;
|
|---|
| 673 | unless ($seen{$c}++) {
|
|---|
| 674 | print CONFIG_POD <<EOF if $text;
|
|---|
| 675 | =back
|
|---|
| 676 |
|
|---|
| 677 | EOF
|
|---|
| 678 | print CONFIG_POD <<EOF;
|
|---|
| 679 | =head2 $c
|
|---|
| 680 |
|
|---|
| 681 | =over 4
|
|---|
| 682 |
|
|---|
| 683 | EOF
|
|---|
| 684 | $text = 1;
|
|---|
| 685 | }
|
|---|
| 686 | }
|
|---|
| 687 | elsif (!$text || !/\A\t/) {
|
|---|
| 688 | warn "Expected a Configure variable header",
|
|---|
| 689 | ($text ? " or another paragraph of description" : () );
|
|---|
| 690 | }
|
|---|
| 691 | s/n't/n\00t/g; # leave can't, won't etc untouched
|
|---|
| 692 | s/^\t\s+(.*)/\n$1/gm; # Indented lines ===> new paragraph
|
|---|
| 693 | s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text
|
|---|
| 694 | s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o'
|
|---|
| 695 | s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command
|
|---|
| 696 | s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s'
|
|---|
| 697 | s{
|
|---|
| 698 | (?<! [\w./<\'\"] ) # Only standalone file names
|
|---|
| 699 | (?! e \. g \. ) # Not e.g.
|
|---|
| 700 | (?! \. \. \. ) # Not ...
|
|---|
| 701 | (?! \d ) # Not 5.004
|
|---|
| 702 | (?! read/ ) # Not read/write
|
|---|
| 703 | (?! etc\. ) # Not etc.
|
|---|
| 704 | (?! I/O ) # Not I/O
|
|---|
| 705 | (
|
|---|
| 706 | \$ ? # Allow leading $
|
|---|
| 707 | [\w./]* [./] [\w./]* # Require . or / inside
|
|---|
| 708 | )
|
|---|
| 709 | (?<! \. (?= [\s)] ) ) # Do not include trailing dot
|
|---|
| 710 | (?! [\w/] ) # Include all of it
|
|---|
| 711 | }
|
|---|
| 712 | (F<$1>)xg; # /usr/local
|
|---|
| 713 | s/((?<=\s)~\w*)/F<$1>/g; # ~name
|
|---|
| 714 | s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD
|
|---|
| 715 | s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro
|
|---|
| 716 | s/n[\0]t/n't/g; # undo can't, won't damage
|
|---|
| 717 | }
|
|---|
| 718 |
|
|---|
| 719 | if ($Opts{glossary}) {
|
|---|
| 720 | <GLOS>; # Skip the "DO NOT EDIT"
|
|---|
| 721 | <GLOS>; # Skip the preamble
|
|---|
| 722 | while (<GLOS>) {
|
|---|
| 723 | process;
|
|---|
| 724 | print CONFIG_POD;
|
|---|
| 725 | }
|
|---|
| 726 | }
|
|---|
| 727 |
|
|---|
| 728 | print CONFIG_POD <<'ENDOFTAIL';
|
|---|
| 729 |
|
|---|
| 730 | =back
|
|---|
| 731 |
|
|---|
| 732 | =head1 NOTE
|
|---|
| 733 |
|
|---|
| 734 | This module contains a good example of how to use tie to implement a
|
|---|
| 735 | cache and an example of how to make a tied variable readonly to those
|
|---|
| 736 | outside of it.
|
|---|
| 737 |
|
|---|
| 738 | =cut
|
|---|
| 739 |
|
|---|
| 740 | ENDOFTAIL
|
|---|
| 741 |
|
|---|
| 742 | close(CONFIG_HEAVY);
|
|---|
| 743 | close(CONFIG);
|
|---|
| 744 | close(GLOS);
|
|---|
| 745 | close(CONFIG_POD);
|
|---|
| 746 |
|
|---|
| 747 | # Now create Cross.pm if needed
|
|---|
| 748 | if ($Opts{cross}) {
|
|---|
| 749 | open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!";
|
|---|
| 750 | my $cross = <<'EOS';
|
|---|
| 751 | # typical invocation:
|
|---|
| 752 | # perl -MCross Makefile.PL
|
|---|
| 753 | # perl -MCross=wince -V:cc
|
|---|
| 754 | package Cross;
|
|---|
| 755 |
|
|---|
| 756 | sub import {
|
|---|
| 757 | my ($package,$platform) = @_;
|
|---|
| 758 | unless (defined $platform) {
|
|---|
| 759 | # if $platform is not specified, then use last one when
|
|---|
| 760 | # 'configpm; was invoked with --cross option
|
|---|
| 761 | $platform = '***replace-marker***';
|
|---|
| 762 | }
|
|---|
| 763 | @INC = map {/\blib\b/?(do{local $_=$_;s/\blib\b/xlib\/$platform/;$_},$_):($_)} @INC;
|
|---|
| 764 | $::Cross::platform = $platform;
|
|---|
| 765 | }
|
|---|
| 766 |
|
|---|
| 767 | 1;
|
|---|
| 768 | EOS
|
|---|
| 769 | $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g;
|
|---|
| 770 | print CROSS $cross;
|
|---|
| 771 | close CROSS;
|
|---|
| 772 | }
|
|---|
| 773 |
|
|---|
| 774 | # Now do some simple tests on the Config.pm file we have created
|
|---|
| 775 | unshift(@INC,'lib');
|
|---|
| 776 | require $Config_PM;
|
|---|
| 777 | require $Config_heavy;
|
|---|
| 778 | import Config;
|
|---|
| 779 |
|
|---|
| 780 | die "$0: $Config_PM not valid"
|
|---|
| 781 | unless $Config{'PERL_CONFIG_SH'} eq 'true';
|
|---|
| 782 |
|
|---|
| 783 | die "$0: error processing $Config_PM"
|
|---|
| 784 | if defined($Config{'an impossible name'})
|
|---|
| 785 | or $Config{'PERL_CONFIG_SH'} ne 'true' # test cache
|
|---|
| 786 | ;
|
|---|
| 787 |
|
|---|
| 788 | die "$0: error processing $Config_PM"
|
|---|
| 789 | if eval '$Config{"cc"} = 1'
|
|---|
| 790 | or eval 'delete $Config{"cc"}'
|
|---|
| 791 | ;
|
|---|
| 792 |
|
|---|
| 793 |
|
|---|
| 794 | exit 0;
|
|---|
| 795 | # Popularity of various entries in %Config, based on a large build and test
|
|---|
| 796 | # run of code in the Fotango build system:
|
|---|
| 797 | __DATA__
|
|---|
| 798 | path_sep: 8490
|
|---|
| 799 | d_readlink: 7101
|
|---|
| 800 | d_symlink: 7101
|
|---|
| 801 | archlibexp: 4318
|
|---|
| 802 | sitearchexp: 4305
|
|---|
| 803 | sitelibexp: 4305
|
|---|
| 804 | privlibexp: 4163
|
|---|
| 805 | ldlibpthname: 4041
|
|---|
| 806 | libpth: 2134
|
|---|
| 807 | archname: 1591
|
|---|
| 808 | exe_ext: 1256
|
|---|
| 809 | scriptdir: 1155
|
|---|
| 810 | version: 1116
|
|---|
| 811 | useithreads: 1002
|
|---|
| 812 | osvers: 982
|
|---|
| 813 | osname: 851
|
|---|
| 814 | inc_version_list: 783
|
|---|
| 815 | dont_use_nlink: 779
|
|---|
| 816 | intsize: 759
|
|---|
| 817 | usevendorprefix: 642
|
|---|
| 818 | dlsrc: 624
|
|---|
| 819 | cc: 541
|
|---|
| 820 | lib_ext: 520
|
|---|
| 821 | so: 512
|
|---|
| 822 | ld: 501
|
|---|
| 823 | ccdlflags: 500
|
|---|
| 824 | ldflags: 495
|
|---|
| 825 | obj_ext: 495
|
|---|
| 826 | cccdlflags: 493
|
|---|
| 827 | lddlflags: 493
|
|---|
| 828 | ar: 492
|
|---|
| 829 | dlext: 492
|
|---|
| 830 | libc: 492
|
|---|
| 831 | ranlib: 492
|
|---|
| 832 | full_ar: 491
|
|---|
| 833 | vendorarchexp: 491
|
|---|
| 834 | vendorlibexp: 491
|
|---|
| 835 | installman1dir: 489
|
|---|
| 836 | installman3dir: 489
|
|---|
| 837 | installsitebin: 489
|
|---|
| 838 | installsiteman1dir: 489
|
|---|
| 839 | installsiteman3dir: 489
|
|---|
| 840 | installvendorman1dir: 489
|
|---|
| 841 | installvendorman3dir: 489
|
|---|
| 842 | d_flexfnam: 474
|
|---|
| 843 | eunicefix: 360
|
|---|
| 844 | d_link: 347
|
|---|
| 845 | installsitearch: 344
|
|---|
| 846 | installscript: 341
|
|---|
| 847 | installprivlib: 337
|
|---|
| 848 | binexp: 336
|
|---|
| 849 | installarchlib: 336
|
|---|
| 850 | installprefixexp: 336
|
|---|
| 851 | installsitelib: 336
|
|---|
| 852 | installstyle: 336
|
|---|
| 853 | installvendorarch: 336
|
|---|
| 854 | installvendorbin: 336
|
|---|
| 855 | installvendorlib: 336
|
|---|
| 856 | man1ext: 336
|
|---|
| 857 | man3ext: 336
|
|---|
| 858 | sh: 336
|
|---|
| 859 | siteprefixexp: 336
|
|---|
| 860 | installbin: 335
|
|---|
| 861 | usedl: 332
|
|---|
| 862 | ccflags: 285
|
|---|
| 863 | startperl: 232
|
|---|
| 864 | optimize: 231
|
|---|
| 865 | usemymalloc: 229
|
|---|
| 866 | cpprun: 228
|
|---|
| 867 | sharpbang: 228
|
|---|
| 868 | perllibs: 225
|
|---|
| 869 | usesfio: 224
|
|---|
| 870 | usethreads: 220
|
|---|
| 871 | perlpath: 218
|
|---|
| 872 | extensions: 217
|
|---|
| 873 | usesocks: 208
|
|---|
| 874 | shellflags: 198
|
|---|
| 875 | make: 191
|
|---|
| 876 | d_pwage: 189
|
|---|
| 877 | d_pwchange: 189
|
|---|
| 878 | d_pwclass: 189
|
|---|
| 879 | d_pwcomment: 189
|
|---|
| 880 | d_pwexpire: 189
|
|---|
| 881 | d_pwgecos: 189
|
|---|
| 882 | d_pwpasswd: 189
|
|---|
| 883 | d_pwquota: 189
|
|---|
| 884 | gccversion: 189
|
|---|
| 885 | libs: 186
|
|---|
| 886 | useshrplib: 186
|
|---|
| 887 | cppflags: 185
|
|---|
| 888 | ptrsize: 185
|
|---|
| 889 | shrpenv: 185
|
|---|
| 890 | static_ext: 185
|
|---|
| 891 | use5005threads: 185
|
|---|
| 892 | uselargefiles: 185
|
|---|
| 893 | alignbytes: 184
|
|---|
| 894 | byteorder: 184
|
|---|
| 895 | ccversion: 184
|
|---|
| 896 | config_args: 184
|
|---|
| 897 | cppminus: 184
|
|---|
