#!./miniperl -w
-$config_pm = $ARGV[0] || 'lib/Config.pm';
+my $config_pm = $ARGV[0] || 'lib/Config.pm';
+my $glossary = $ARGV[1] || 'Porting/Glossary';
@ARGV = "./config.sh";
# list names to put first (and hence lookup fastest)
@fast = qw(archname osname osvers prefix libs libpth
dynamic_ext static_ext extensions dlsrc so
- sig_name cc ccflags cppflags
+ sig_name sig_num cc ccflags cppflags
privlibexp archlibexp installprivlib installarchlib
sharpbang startsh shsharp
);
open CONFIG, ">$config_pm" or die "Can't open $config_pm: $!\n";
-$myver = sprintf("%.3f", $]);
+$myver = sprintf "v%vd", $^V;
-print CONFIG <<"ENDOFBEG";
+print CONFIG <<'ENDOFBEG_NOQ', <<"ENDOFBEG";
package Config;
use Exporter ();
-\@ISA = (Exporter);
-\@EXPORT = qw(%Config);
-\@EXPORT_OK = qw(myconfig config_sh config_vars);
+@EXPORT = qw(%Config);
+@EXPORT_OK = qw(myconfig config_sh config_vars);
+
+# Define our own import method to avoid pulling in the full Exporter:
+sub import {
+ my $pkg = shift;
+ @_ = @EXPORT unless @_;
+ my @func = grep {$_ ne '%Config'} @_;
+ local $Exporter::ExportLevel = 1;
+ Exporter::import('Config', @func) if @func;
+ return if @func == @_;
+ my $callpkg = caller(0);
+ *{"$callpkg\::Config"} = \%Config;
+}
+
+ENDOFBEG_NOQ
+die "Perl lib version ($myver) doesn't match executable version (\$])"
+ unless \$^V;
-\$] == $myver or die sprintf
- "Perl lib version ($myver) doesn't match executable version (%.3f)\\n", \$];
+\$^V eq $myver
+ or die "Perl lib version ($myver) doesn't match executable version (" .
+ (sprintf "v%vd",\$^V) . ")";
# This file was created by configpm when Perl was built. Any changes
# made to this file will be lost the next time perl is built.
@non_v=();
@v_fast=();
@v_others=();
+$in_v = 0;
while (<>) {
next if m:^#!/bin/sh:;
- # Catch CONFIG=true and PATCHLEVEL=n line from Configure.
+ # Catch CONFIGDOTSH=true and PERL_VERSION=n line from Configure.
s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/;
- unless (m/^(\w+)='(.*)'\s*$/){
+ my ($k,$v) = ($1,$2);
+ # grandfather PATCHLEVEL and SUBVERSION and CONFIG
+ if ($k) {
+ if ($k eq 'PERL_VERSION') {
+ push @v_others, "PATCHLEVEL='$v'\n";
+ }
+ elsif ($k eq 'PERL_SUBVERSION') {
+ push @v_others, "SUBVERSION='$v'\n";
+ }
+ elsif ($k eq 'CONFIGDOTSH') {
+ push @v_others, "CONFIG='$v'\n";
+ }
+ }
+ # We can delimit things in config.sh with either ' or ".
+ unless ($in_v or m/^(\w+)=(['"])(.*\n)/){
push(@non_v, "#$_"); # not a name='value' line
next;
}
- $name = $1;
+ $quote = $2;
+ if ($in_v) { $val .= $_; }
+ else { ($name,$val) = ($1,$3); }
+ $in_v = $val !~ /$quote\n/;
+ next if $in_v;
if ($extensions{$name}) { s,/,::,g }
- if (!$fast{$name}){ push(@v_others, $_); next; }
- push(@v_fast,$_);
+ if (!$fast{$name}){ push(@v_others, "$name=$quote$val"); next; }
+ push(@v_fast,"$name=$quote$val");
}
foreach(@non_v){ print CONFIG $_ }
join("", @v_fast, sort @v_others),
"!END!\n\n";
-# copy config summary format from the myconfig script
+# copy config summary format from the myconfig.SH script
print CONFIG "my \$summary = <<'!END!';\n";
-open(MYCONFIG,"<myconfig") || die "open myconfig failed: $!";
-1 while( ($_=<MYCONFIG>) !~ /^Summary of/);
-do { print CONFIG $_ } until ($_ = <MYCONFIG>) =~ /^\s*$/;
+open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!";
+1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
+do { print CONFIG $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
close(MYCONFIG);
print CONFIG "\n!END!\n", <<'EOT';
sub myconfig {
return $summary if $summary_expanded;
- $summary =~ s/\$(\w+)/$Config{$1}/ge;
+ $summary =~ s{\$(\w+)}
+ { my $c = $Config{$1}; defined($c) ? $c : 'undef' }ge;
$summary_expanded = 1;
$summary;
}
print CONFIG <<'ENDOFEND';
-tie %Config, Config;
-sub TIEHASH { bless {} }
sub FETCH {
- # check for cached value (which maybe undef so we use exists not defined)
+ # check for cached value (which may be undef so we use exists not defined)
return $_[0]->{$_[1]} if (exists $_[0]->{$_[1]});
+
+ # Search for it in the big string
+ my($value, $start, $marker, $quote_type);
+ $marker = "$_[1]=";
+ $quote_type = "'";
+ # return undef unless (($value) = $config_sh =~ m/^$_[1]='(.*)'\s*$/m);
+ # Check for the common case, ' delimeted
+ $start = index($config_sh, "\n$marker$quote_type");
+ # If that failed, check for " delimited
+ if ($start == -1) {
+ $quote_type = '"';
+ $start = index($config_sh, "\n$marker$quote_type");
+ }
+ return undef if ( ($start == -1) && # in case it's first
+ (substr($config_sh, 0, length($marker)) ne $marker) );
+ if ($start == -1) {
+ # It's the very first thing we found. Skip $start forward
+ # and figure out the quote mark after the =.
+ $start = length($marker) + 1;
+ $quote_type = substr($config_sh, $start - 1, 1);
+ }
+ else {
+ $start += length($marker) + 2;
+ }
+ $value = substr($config_sh, $start,
+ index($config_sh, "$quote_type\n", $start) - $start);
- my($value); # search for the item in the big $config_sh string
- return undef unless (($value) = $config_sh =~ m/^$_[1]='(.*)'\s*$/m);
-
+ # If we had a double-quote, we'd better eval it so escape
+ # sequences and such can be interpolated. Since the incoming
+ # value is supposed to follow shell rules and not perl rules,
+ # we escape any perl variable markers
+ if ($quote_type eq '"') {
+ $value =~ s/\$/\\\$/g;
+ $value =~ s/\@/\\\@/g;
+ eval "\$value = \"$value\"";
+ }
+ #$value = sprintf($value) if $quote_type eq '"';
$value = undef if $value eq 'undef'; # So we can say "if $Config{'foo'}".
$_[0]->{$_[1]} = $value; # cache it
return $value;
sub FIRSTKEY {
$prevpos = 0;
- my($key) = $config_sh =~ m/^(.*?)=/;
- $key;
+ # my($key) = $config_sh =~ m/^(.*?)=/;
+ substr($config_sh, 0, index($config_sh, '=') );
+ # $key;
}
sub NEXTKEY {
- my $pos = index($config_sh, "\n", $prevpos) + 1;
+ # Find out how the current key's quoted so we can skip to its end.
+ my $quote = substr($config_sh, index($config_sh, "=", $prevpos)+1, 1);
+ my $pos = index($config_sh, qq($quote\n), $prevpos) + 2;
my $len = index($config_sh, "=", $pos) - $pos;
$prevpos = $pos;
$len > 0 ? substr($config_sh, $pos, $len) : undef;
}
sub EXISTS {
- exists($_[0]->{$_[1]}) or $config_sh =~ m/^$_[1]=/m;
+ # exists($_[0]->{$_[1]}) or $config_sh =~ m/^$_[1]=/m;
+ exists($_[0]->{$_[1]}) or
+ index($config_sh, "\n$_[1]='") != -1 or
+ substr($config_sh, 0, length($_[1])+2) eq "$_[1]='" or
+ index($config_sh, "\n$_[1]=\"") != -1 or
+ substr($config_sh, 0, length($_[1])+2) eq "$_[1]=\"";
}
sub STORE { die "\%Config::Config is read-only\n" }
sub config_sh {
$config_sh
}
+
+sub config_re {
+ my $re = shift;
+ my @matches = ($config_sh =~ /^$re=.*\n/mg);
+ @matches ? (print @matches) : print "$re: not found\n";
+}
+
sub config_vars {
foreach(@_){
+ config_re($_), next if /\W/;
my $v=(exists $Config{$_}) ? $Config{$_} : 'UNKNOWN';
$v='undef' unless defined $v;
print "$_='$v';\n";
}
}
+ENDOFEND
+
+if ($^O eq 'os2') {
+ print CONFIG <<'ENDOFSET';
+my %preconfig;
+if ($OS2::is_aout) {
+ my ($value, $v) = $config_sh =~ m/^used_aout='(.*)'\s*$/m;
+ for (split ' ', $value) {
+ ($v) = $config_sh =~ m/^aout_$_='(.*)'\s*$/m;
+ $preconfig{$_} = $v eq 'undef' ? undef : $v;
+ }
+}
+sub TIEHASH { bless {%preconfig} }
+ENDOFSET
+} else {
+ print CONFIG <<'ENDOFSET';
+sub TIEHASH { bless {} }
+ENDOFSET
+}
+
+print CONFIG <<'ENDOFTAIL';
+
+# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD
+sub DESTROY { }
+
+tie %Config, 'Config';
+
1;
__END__
stored in the readonly-variable C<%Config>, indexed by their names.
Values stored in config.sh as 'undef' are returned as undefined
-values. The perl C<exists> function can be used to check is a
+values. The perl C<exists> function can be used to check if a
named variable exists.
=over 4
Here's a more sophisticated example of using %Config:
use Config;
+ use strict;
+
+ my %sig_num;
+ my @sig_name;
+ unless($Config{sig_name} && $Config{sig_num}) {
+ die "No sigs?";
+ } else {
+ my @names = split ' ', $Config{sig_name};
+ @sig_num{@names} = split ' ', $Config{sig_num};
+ foreach (@names) {
+ $sig_name[$sig_num{$_}] ||= $_;
+ }
+ }
- defined $Config{sig_name} || die "No sigs?";
- foreach $name (split(' ', $Config{sig_name})) {
- $signo{$name} = $i;
- $signame[$i] = $name;
- $i++;
- }
-
- print "signal #17 = $signame[17]\n";
- if ($signo{ALRM}) {
- print "SIGALRM is $signo{ALRM}\n";
+ print "signal #17 = $sig_name[17]\n";
+ if ($sig_num{ALRM}) {
+ print "SIGALRM is $sig_num{ALRM}\n";
}
=head1 WARNING
specific library directory ($Config{installarchlib}) and it checks the
perl version number when loaded.
+The values stored in config.sh may be either single-quoted or
+double-quoted. Double-quoted strings are handy for those cases where you
+need to include escape sequences in the strings. To avoid runtime variable
+interpolation, any C<$> and C<@> characters are replaced by C<\$> and
+C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$>
+or C<\@> in double-quoted strings unless you're willing to deal with the
+consequences. (The slashes will end up escaped and the C<$> or C<@> will
+trigger variable interpolation)
+
+=head1 GLOSSARY
+
+Most C<Config> variables are determined by the C<Configure> script
+on platforms supported by it (which is most UNIX platforms). Some
+platforms have custom-made C<Config> variables, and may thus not have
+some of the variables described below, or may have extraneous variables
+specific to that particular port. See the port specific documentation
+in such cases.
+
+ENDOFTAIL
+
+open(GLOS, "<$glossary") or die "Can't open $glossary: $!";
+%seen = ();
+$text = 0;
+$/ = '';
+
+sub process {
+ s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m;
+ my $c = substr $1, 0, 1;
+ unless ($seen{$c}++) {
+ print CONFIG <<EOF if $text;
+=back
+
+EOF
+ print CONFIG <<EOF;
+=head2 $c
+
+=over
+
+EOF
+ $text = 1;
+ }
+ s/n't/n\00t/g; # leave can't, won't etc untouched
+ s/^\t\s+(.*)/\n\t$1\n/gm; # Indented lines ===> paragraphs
+ s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text
+ s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o'
+ s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command
+ s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s'
+ s{
+ (?<! [\w./<\'\"] ) # Only standalone file names
+ (?! e \. g \. ) # Not e.g.
+ (?! \. \. \. ) # Not ...
+ (?! \d ) # Not 5.004
+ ( [\w./]* [./] [\w./]* ) # Require . or / inside
+ (?<! \. (?= \s ) ) # Do not include trailing dot
+ (?! [\w/] ) # Include all of it
+ }
+ (F<$1>)xg; # /usr/local
+ s/((?<=\s)~\w*)/F<$1>/g; # ~name
+ s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD
+ s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro
+ s/n[\0]t/n't/g; # undo can't, won't damage
+}
+
+<GLOS>; # Skip the preamble
+while (<GLOS>) {
+ process;
+ print CONFIG;
+}
+
+print CONFIG <<'ENDOFTAIL';
+
+=back
+
=head1 NOTE
This module contains a good example of how to use tie to implement a
=cut
-ENDOFEND
+ENDOFTAIL
close(CONFIG);
+close(GLOS);
# Now do some simple tests on the Config.pm file we have created
unshift(@INC,'lib');
import Config;
die "$0: $config_pm not valid"
- unless $Config{'CONFIG'} eq 'true';
+ unless $Config{'CONFIGDOTSH'} eq 'true';
die "$0: error processing $config_pm"
if defined($Config{'an impossible name'})
- or $Config{'CONFIG'} ne 'true' # test cache
+ or $Config{'CONFIGDOTSH'} ne 'true' # test cache
;
die "$0: error processing $config_pm"
https://perl5.git.perl.org / perl5.git / blobdiff