#!./miniperl -w
+#
+# configpm
+#
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007 Larry Wall and others.
+#
+#
+# Regenerate the files
+#
+# lib/Config.pm
+# lib/Config_heavy.pl
+# lib/Config.pod
+# lib/Cross.pm (optionally)
+#
+#
+# from the contents of the static files
+#
+# Porting/Glossary
+# myconfig.SH
+#
+# and from the contents of the Configure-generated file
+#
+# config.sh
+#
+# Note that output directory is xlib/[cross-name]/ for cross-compiling
+#
+# It will only update Config.pm and Config_heavy.pl if the contents of
+# either file would be different. Note that *both* files are updated in
+# this case, since for example an extension makefile that has a dependency
+# on Config.pm should trigger even if only Config_heavy.pl has changed.
+
+sub usage { die <<EOF }
+usage: $0 [ options ]
+ --cross=PLATFORM cross-compile for a different platform
+ --no-glossary don't include Porting/Glossary in lib/Config.pod
+ --chdir=dir change directory before writing files
+EOF
+
+use strict;
+use vars qw(%Config $Config_SH_expanded);
+
+my $how_many_common = 22;
+
+# commonly used names to precache (and hence lookup fastest)
+my %Common;
-# commonly used names to put first (and hence lookup fastest)
-my %Common = map {($_,$_)}
- qw(archname osname osvers prefix libs libpth
- dynamic_ext static_ext dlsrc so
- cc ccflags cppflags
- privlibexp archlibexp installprivlib installarchlib
- sharpbang startsh shsharp
- );
+while ($how_many_common--) {
+ $_ = <DATA>;
+ chomp;
+ /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
+ $Common{$1} = $1;
+}
+
+# Post 37589e1eefb1bd62 DynaLoader defaults to reading these at runtime.
+# Ideally we're redo the data below, but Fotango's build system made it
+# wonderfully easy to instrument, and no longer exists.
+$Common{$_} = $_ foreach qw(dlext so);
# names of things which may need to have slashes changed to double-colons
my %Extensions = map {($_,$_)}
# allowed opts as well as specifies default and initial values
my %Allowed_Opts = (
- 'cross' => '', # --cross=PALTFORM - crosscompiling for PLATFORM
- 'glossary' => 1, # --no-glossary - no glossary file inclusion,
+ 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM
+ 'glossary' => 1, # --no-glossary - no glossary file inclusion,
# for compactness
+ 'chdir' => '', # --chdir=dir - change directory before writing files
);
sub opts {
my %opts = (%Allowed_Opts, %given_opts);
for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) {
- die "option '$opt' is not recognized";
+ warn "option '$opt' is not recognized";
+ usage;
}
@ARGV = grep {!/^--/} @ARGV;
my %Opts = opts();
-my $Config_PM;
-my $Glossary = $ARGV[1] || 'Porting/Glossary';
+if ($Opts{chdir}) {
+ chdir $Opts{chdir} or die "$0: could not chdir $Opts{chdir}: $!"
+}
+
+my ($Config_SH, $Config_PM, $Config_heavy, $Config_POD);
+my $Glossary = 'Porting/Glossary';
if ($Opts{cross}) {
# creating cross-platform config file
mkdir "xlib";
mkdir "xlib/$Opts{cross}";
- $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm";
+ $Config_PM = "xlib/$Opts{cross}/Config.pm";
+ $Config_POD = "xlib/$Opts{cross}/Config.pod";
+ $Config_SH = "Cross/config-$Opts{cross}.sh";
}
else {
- $Config_PM = $ARGV[0] || 'lib/Config.pm';
+ $Config_PM = "lib/Config.pm";
+ $Config_POD = "lib/Config.pod";
+ $Config_SH = "config.sh";
}
+($Config_heavy = $Config_PM) =~ s/\.pm$/_heavy.pl/;
+die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'"
+ if $Config_heavy eq $Config_PM;
+
+my $config_txt;
+my $heavy_txt;
+
+$heavy_txt .= <<'ENDOFBEG';
+# 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.
+
+package Config;
+use strict;
+# use warnings; Pulls in Carp
+# use vars pulls in Carp
+
+sub _V {
+ my ($bincompat, $non_bincompat, $date, @patches) = Internals::V();
+ my $opts = join ' ', sort split ' ', "$bincompat $non_bincompat";
-open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n";
+ # wrap at 76 columns.
-my $myver = sprintf "v%vd", $^V;
+ $opts =~ s/(?=.{53})(.{1,53}) /$1\n /mg;
+
+ print Config::myconfig();
+ if ($^O eq 'VMS') {
+ print "\nCharacteristics of this PERLSHR image: \n";
+ } else {
+ print "\nCharacteristics of this binary (from libperl): \n";
+ }
+
+ print " Compile-time options: $opts\n";
+
+ if (@patches) {
+ print " Locally applied patches:\n";
+ print "\t$_\n" foreach @patches;
+ }
+
+ print " Built under $^O\n";
+
+ print " $date\n" if defined $date;
+
+ my @env = map { "$_=\"$ENV{$_}\"" } sort grep {/^PERL/} keys %ENV;
+ push @env, "CYGWIN=\"$ENV{CYGWIN}\"" if $^O eq 'cygwin';
+
+ if (@env) {
+ print " \%ENV:\n";
+ print " $_\n" foreach @env;
+ }
+ print " \@INC:\n";
+ print " $_\n" foreach @INC;
+}
+
+ENDOFBEG
-printf CONFIG <<'ENDOFBEG', ($myver) x 3;
+my $myver = sprintf "%vd", $^V;
+
+$config_txt .= sprintf <<'ENDOFBEG', ($myver) x 3;
# This file was created by configpm when Perl was built. Any changes
# made to this file will be lost the next time perl is built.
+# for a description of the variables, please have a look at the
+# Glossary file, as written in the Porting folder, or use the url:
+# http://perl5.git.perl.org/perl.git/blob/HEAD:/Porting/Glossary
+
package Config;
-@EXPORT = qw(%%Config);
-@EXPORT_OK = qw(myconfig config_sh config_vars config_re);
+use strict;
+# use warnings; Pulls in Carp
+# use vars pulls in Carp
+@Config::EXPORT = qw(%%Config);
+@Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re);
+
+# Need to stub all the functions to make code such as print Config::config_sh
+# keep working
+
+sub myconfig;
+sub config_sh;
+sub config_vars;
+sub config_re;
-my %%Export_Cache = map {($_ => 1)} (@EXPORT, @EXPORT_OK);
+# Skip @Config::EXPORT because it only contains %%Config, which we special
+# case below as it's not a function. @Config::EXPORT won't change in the
+# lifetime of Perl 5.
+my %%Export_Cache = map {($_ => 1)} @Config::EXPORT_OK;
+
+our %%Config;
# Define our own import method to avoid pulling in the full Exporter:
sub import {
- my $pkg = shift;
- @_ = @EXPORT unless @_;
+ shift;
+ @_ = @Config::EXPORT unless @_;
my @funcs = grep $_ ne '%%Config', @_;
my $export_Config = @funcs < @_ ? 1 : 0;
+ no strict 'refs';
my $callpkg = caller(0);
foreach my $func (@funcs) {
- die sprintf qq{"%%s" is not exported by the %%s module\n},
- $func, __PACKAGE__ unless $Export_Cache{$func};
+ die qq{"$func" is not exported by the Config module\n}
+ unless $Export_Cache{$func};
*{$callpkg.'::'.$func} = \&{$func};
}
return;
}
-die "Perl lib version (%s) doesn't match executable version ($])"
+die "Perl lib version (%s) doesn't match executable '$0' version ($])"
unless $^V;
$^V eq %s
- or die "Perl lib version (%s) doesn't match executable version (" .
+ or die "Perl lib version (%s) doesn't match executable '$0' version (" .
sprintf("v%%vd",$^V) . ")";
ENDOFBEG
my @non_v = ();
-my @v_fast = ();
-my %v_fast = ();
my @v_others = ();
my $in_v = 0;
my %Data = ();
-# This is somewhat grim, but I want the code for parsing config.sh here and
-# now so that I can expand $Config{ivsize} and $Config{ivtype}
-
-my $fetch_string = <<'EOT';
-
-# Search for it in the big string
-sub fetch_string {
- my($self, $key) = @_;
-
- my $quote_type = "'";
- my $marker = "$key=";
-
- # Check for the common case, ' delimited
- my $start = index($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;
- }
- my $value = substr($Config_SH, $start,
- index($Config_SH, "$quote_type\n", $start) - $start);
-
- # If we had a double-quote, we'd better eval it so escape
- # sequences and such can be interpolated. Since the incoming
- # value is supposed to follow shell rules and not perl rules,
- # we escape any perl variable markers
- if ($quote_type eq '"') {
- $value =~ s/\$/\\\$/g;
- $value =~ s/\@/\\\@/g;
- eval "\$value = \"$value\"";
- }
-
- # So we can say "if $Config{'foo'}".
- $value = undef if $value eq 'undef';
- $self->{$key} = $value; # cache it
-}
-EOT
-
-eval $fetch_string;
-die if $@;
-
-open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!";
-while (<CONFIG_SH>) {
+my %seen_quotes;
+{
+ my ($name, $val);
+ open(CONFIG_SH, $Config_SH) || die "Can't open $Config_SH: $!";
+ while (<CONFIG_SH>) {
next if m:^#!/bin/sh:;
# Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
push(@non_v, "#$_"); # not a name='value' line
next;
}
- $quote = $2;
+ my $quote = $2;
if ($in_v) {
$val .= $_;
}
$val =~ s/$quote\n?\z//;
my $line = "$name=$quote$val$quote\n";
- if (!$Common{$name}){
- push(@v_others, $line);
+ push(@v_others, $line);
+ $seen_quotes{$quote}++;
+ }
+ close CONFIG_SH;
+}
+
+# This is somewhat grim, but I want the code for parsing config.sh here and
+# now so that I can expand $Config{ivsize} and $Config{ivtype}
+
+my $fetch_string = <<'EOT';
+
+# Search for it in the big string
+sub fetch_string {
+ my($self, $key) = @_;
+
+EOT
+
+if ($seen_quotes{'"'}) {
+ # We need the full ' and " code
+
+$fetch_string .= <<'EOT';
+ return undef unless my ($quote_type, $value) = $Config_SH_expanded =~ /\n$key=(['"])(.*?)\1\n/s;
+
+ # 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
+
+ # Historically, since " 'support' was added in change 1409, the
+ # interpolation was done before the undef. Stick to this arguably buggy
+ # behaviour as we're refactoring.
+ if ($quote_type eq '"') {
+ $value =~ s/\$/\\\$/g;
+ $value =~ s/\@/\\\@/g;
+ eval "\$value = \"$value\"";
}
- else {
- push(@v_fast, $line);
- $v_fast{$name} = "'$name' => $quote$val$quote";
+
+ # So we can say "if $Config{'foo'}".
+ $self->{$key} = $value eq 'undef' ? undef : $value; # cache it
+}
+EOT
+
+} else {
+ # We only have ' delimted.
+
+$fetch_string .= <<'EOT';
+ return undef unless $Config_SH_expanded =~ /\n$key=\'(.*?)\'\n/s;
+ # So we can say "if $Config{'foo'}".
+ $self->{$key} = $1 eq 'undef' ? undef : $1;
+}
+EOT
+
+}
+
+eval $fetch_string;
+die if $@;
+
+# Calculation for the keys for byteorder
+# This is somewhat grim, but I need to run fetch_string here.
+our $Config_SH_expanded = join "\n", '', @v_others;
+
+my $t = fetch_string ({}, 'ivtype');
+my $s = fetch_string ({}, 'ivsize');
+
+# byteorder does exist on its own but we overlay a virtual
+# dynamically recomputed value.
+
+# However, ivtype and ivsize will not vary for sane fat binaries
+
+my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
+
+my $byteorder_code;
+if ($s == 4 || $s == 8) {
+ my $list = join ',', reverse(2..$s);
+ my $format = 'a'x$s;
+ $byteorder_code = <<"EOT";
+
+my \$i = 0;
+foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 }
+\$i |= ord(1);
+our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
+EOT
+} else {
+ $byteorder_code = "our \$byteorder = '?'x$s;\n";
+}
+
+my @need_relocation;
+
+if (fetch_string({},'userelocatableinc')) {
+ foreach my $what (qw(prefixexp
+
+ archlibexp
+ html1direxp
+ html3direxp
+ man1direxp
+ man3direxp
+ privlibexp
+ scriptdirexp
+ sitearchexp
+ sitebinexp
+ sitehtml1direxp
+ sitehtml3direxp
+ sitelibexp
+ siteman1direxp
+ siteman3direxp
+ sitescriptexp
+ vendorarchexp
+ vendorbinexp
+ vendorhtml1direxp
+ vendorhtml3direxp
+ vendorlibexp
+ vendorman1direxp
+ vendorman3direxp
+ vendorscriptexp
+
+ siteprefixexp
+ sitelib_stem
+ vendorlib_stem
+
+ installarchlib
+ installhtml1dir
+ installhtml3dir
+ installman1dir
+ installman3dir
+ installprefix
+ installprefixexp
+ installprivlib
+ installscript
+ installsitearch
+ installsitebin
+ installsitehtml1dir
+ installsitehtml3dir
+ installsitelib
+ installsiteman1dir
+ installsiteman3dir
+ installsitescript
+ installvendorarch
+ installvendorbin
+ installvendorhtml1dir
+ installvendorhtml3dir
+ installvendorlib
+ installvendorman1dir
+ installvendorman3dir
+ installvendorscript
+ )) {
+ push @need_relocation, $what if fetch_string({}, $what) =~ m!^\.\.\./!;
+ }
+}
+
+my %need_relocation;
+@need_relocation{@need_relocation} = @need_relocation;
+
+# This can have .../ anywhere:
+if (fetch_string({}, 'otherlibdirs') =~ m!\.\.\./!) {
+ $need_relocation{otherlibdirs} = 'otherlibdirs';
+}
+
+my $relocation_code = <<'EOT';
+
+sub relocate_inc {
+ my $libdir = shift;
+ return $libdir unless $libdir =~ s!^\.\.\./!!;
+ my $prefix = $^X;
+ if ($prefix =~ s!/[^/]*$!!) {
+ while ($libdir =~ m!^\.\./!) {
+ # Loop while $libdir starts "../" and $prefix still has a trailing
+ # directory
+ last unless $prefix =~ s!/([^/]+)$!!;
+ # but bail out if the directory we picked off the end of $prefix is .
+ # or ..
+ if ($1 eq '.' or $1 eq '..') {
+ # Undo! This should be rare, hence code it this way rather than a
+ # check each time before the s!!! above.
+ $prefix = "$prefix/$1";
+ last;
+ }
+ # Remove that leading ../ and loop again
+ substr ($libdir, 0, 3, '');
}
+ $libdir = "$prefix/$libdir";
+ }
+ $libdir;
+}
+EOT
+
+if (%need_relocation) {
+ my $relocations_in_common;
+ # otherlibdirs only features in the hash
+ foreach (keys %need_relocation) {
+ $relocations_in_common++ if $Common{$_};
+ }
+ if ($relocations_in_common) {
+ $config_txt .= $relocation_code;
+ } else {
+ $heavy_txt .= $relocation_code;
+ }
}
-close CONFIG_SH;
-print CONFIG @non_v, "\n";
+$heavy_txt .= join('', @non_v) . "\n";
# copy config summary format from the myconfig.SH script
-print CONFIG "my \$summary = <<'!END!';\n";
+$heavy_txt .= "our \$summary = <<'!END!';\n";
open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!";
1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
-do { print CONFIG $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
+do { $heavy_txt .= $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
close(MYCONFIG);
-print CONFIG "\n!END!\n", <<'EOT';
-my $summary_expanded = 0;
+$heavy_txt .= "\n!END!\n" . <<'EOT';
+my $summary_expanded;
sub myconfig {
- return $summary if $summary_expanded;
- $summary =~ s{\$(\w+)}
- { my $c = $Config{$1}; defined($c) ? $c : 'undef' }ge;
- $summary_expanded = 1;
- $summary;
+ return $summary_expanded if $summary_expanded;
+ ($summary_expanded = $summary) =~ s{\$(\w+)}
+ {
+ my $c;
+ if ($1 eq 'git_ancestor_line') {
+ if ($Config::Config{git_ancestor}) {
+ $c= "\n Ancestor: $Config::Config{git_ancestor}";
+ } else {
+ $c= "";
+ }
+ } else {
+ $c = $Config::Config{$1};
+ }
+ defined($c) ? $c : 'undef'
+ }ge;
+ $summary_expanded;
}
-our $Config_SH : unique = <<'!END!';
+local *_ = \my $a;
+$_ = <<'!END!';
EOT
-print CONFIG join("", @v_fast, sort @v_others);
+$heavy_txt .= join('', sort @v_others) . "!END!\n";
+
+# Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of
+# the precached keys
+if ($Common{byteorder}) {
+ $config_txt .= $byteorder_code;
+} else {
+ $heavy_txt .= $byteorder_code;
+}
+
+if (@need_relocation) {
+$heavy_txt .= 'foreach my $what (qw(' . join (' ', @need_relocation) .
+ ")) {\n" . <<'EOT';
+ s/^($what=)(['"])(.*?)\2/$1 . $2 . relocate_inc($3) . $2/me;
+}
+EOT
+# Currently it only makes sense to do the ... relocation on Unix, so there's
+# no need to emulate the "which separator for this platform" logic in perl.c -
+# ':' will always be applicable
+if ($need_relocation{otherlibdirs}) {
+$heavy_txt .= << 'EOT';
+s{^(otherlibdirs=)(['"])(.*?)\2}
+ {$1 . $2 . join ':', map {relocate_inc($_)} split ':', $3 . $2}me;
+EOT
+}
+}
-print CONFIG "!END!\n", $fetch_string;
+$heavy_txt .= <<'EOT';
+s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
-print CONFIG <<'ENDOFEND';
+my $config_sh_len = length $_;
-sub fetch_virtual {
- my($self, $key) = @_;
+our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL';
+EOT
- my $value;
-
- if ($key =~ /^((?:cc|ld)flags|libs(?:wanted)?)_nolargefiles/) {
- # These are purely virtual, they do not exist, but need to
- # be computed on demand for largefile-incapable extensions.
- my $new_key = "${1}_uselargefiles";
- $value = $Config{$1};
- my $withlargefiles = $Config{$new_key};
- if ($new_key =~ /^(?:cc|ld)flags_/) {
- $value =~ s/\Q$withlargefiles\E\b//;
- } elsif ($new_key =~ /^libs/) {
- my @lflibswanted = split(' ', $Config{libswanted_uselargefiles});
- if (@lflibswanted) {
- my %lflibswanted;
- @lflibswanted{@lflibswanted} = ();
- if ($new_key =~ /^libs_/) {
- my @libs = grep { /^-l(.+)/ &&
- not exists $lflibswanted{$1} }
- split(' ', $Config{libs});
- $Config{libs} = join(' ', @libs);
- } elsif ($new_key =~ /^libswanted_/) {
- my @libswanted = grep { not exists $lflibswanted{$_} }
- split(' ', $Config{libswanted});
- $Config{libswanted} = join(' ', @libswanted);
- }
- }
- }
+foreach my $prefix (qw(ccflags ldflags)) {
+ my $value = fetch_string ({}, $prefix);
+ my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles");
+ if (defined $withlargefiles) {
+ $value =~ s/\Q$withlargefiles\E\b//;
+ $heavy_txt .= "${prefix}_nolargefiles='$value'\n";
}
+}
- $self->{$key} = $value;
+foreach my $prefix (qw(libs libswanted)) {
+ my $value = fetch_string ({}, $prefix);
+ my $withlf = fetch_string ({}, 'libswanted_uselargefiles');
+ next unless defined $withlf;
+ my @lflibswanted
+ = split(' ', fetch_string ({}, 'libswanted_uselargefiles'));
+ if (@lflibswanted) {
+ my %lflibswanted;
+ @lflibswanted{@lflibswanted} = ();
+ if ($prefix eq 'libs') {
+ my @libs = grep { /^-l(.+)/ &&
+ not exists $lflibswanted{$1} }
+ split(' ', fetch_string ({}, 'libs'));
+ $value = join(' ', @libs);
+ } else {
+ my @libswanted = grep { not exists $lflibswanted{$_} }
+ split(' ', fetch_string ({}, 'libswanted'));
+ $value = join(' ', @libswanted);
+ }
+ }
+ $heavy_txt .= "${prefix}_nolargefiles='$value'\n";
}
-sub FETCH {
+$heavy_txt .= "EOVIRTUAL\n";
+
+$heavy_txt .= <<'ENDOFGIT';
+eval {
+ # do not have hairy conniptions if this isnt available
+ require 'Config_git.pl';
+ $Config_SH_expanded .= $Config::Git_Data;
+ 1;
+} or warn "Warning: failed to load Config_git.pl, something strange about this perl...\n";
+ENDOFGIT
+
+$heavy_txt .= $fetch_string;
+
+$config_txt .= <<'ENDOFEND';
+
+sub FETCH {
my($self, $key) = @_;
# check for cached value (which may be undef so we use exists not defined)
return $self->{$key} if exists $self->{$key};
- $self->fetch_string($key);
- return $self->{$key} if exists $self->{$key};
- $self->fetch_virtual($key);
-
- # Might not exist, in which undef is correct.
- return $self->{$key};
+ return $self->fetch_string($key);
}
-
+ENDOFEND
+
+$heavy_txt .= <<'ENDOFEND';
+
my $prevpos = 0;
sub FIRSTKEY {
$prevpos = 0;
- substr($Config_SH, 0, index($Config_SH, '=') );
+ substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 );
}
sub NEXTKEY {
+ENDOFEND
+if ($seen_quotes{'"'}) {
+$heavy_txt .= <<'ENDOFEND';
# 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;
+ my $quote = substr($Config_SH_expanded,
+ index($Config_SH_expanded, "=", $prevpos)+1, 1);
+ my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2;
+ENDOFEND
+} else {
+ # Just ' quotes, so it's much easier.
+$heavy_txt .= <<'ENDOFEND';
+ my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2;
+ENDOFEND
+}
+$heavy_txt .= <<'ENDOFEND';
+ my $len = index($Config_SH_expanded, "=", $pos) - $pos;
$prevpos = $pos;
- $len > 0 ? substr($Config_SH, $pos, $len) : undef;
+ $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef;
}
-sub EXISTS {
+sub EXISTS {
return 1 if exists($_[0]->{$_[1]});
- return(index($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]=\"" or
- $_[1] =~ /^(?:(?:cc|ld)flags|libs(?:wanted)?)_nolargefiles$/
+ return(index($Config_SH_expanded, "\n$_[1]='") != -1
+ENDOFEND
+if ($seen_quotes{'"'}) {
+$heavy_txt .= <<'ENDOFEND';
+ or index($Config_SH_expanded, "\n$_[1]=\"") != -1
+ENDOFEND
+}
+$heavy_txt .= <<'ENDOFEND';
);
}
sub config_sh {
- $Config_SH
+ substr $Config_SH_expanded, 1, $config_sh_len;
}
sub config_re {
my $re = shift;
- return map { chomp; $_ } grep /^$re=/, split /^/, $Config_SH;
+ return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/,
+ $Config_SH_expanded;
}
sub config_vars {
+ # implements -V:cfgvar option (see perlrun -V:)
foreach (@_) {
- if (/\W/) {
- my @matches = config_re($_);
- print map "$_\n", @matches ? @matches : "$_: not found";
+ # find optional leading, trailing colons; and query-spec
+ my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft,
+ # map colon-flags to print decorations
+ my $prfx = $notag ? '': "$qry="; # tag-prefix for print
+ my $lnend = $lncont ? ' ' : ";\n"; # line ending for print
+
+ # all config-vars are by definition \w only, any \W means regex
+ if ($qry =~ /\W/) {
+ my @matches = config_re($qry);
+ print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag;
+ print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag;
} else {
- my $v = (exists $Config{$_}) ? $Config{$_} : 'UNKNOWN';
+ my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry}
+ : 'UNKNOWN';
$v = 'undef' unless defined $v;
- print "$_='$v';\n";
+ print "${prfx}'${v}'$lnend";
}
}
}
+# Called by the real AUTOLOAD
+sub launcher {
+ undef &AUTOLOAD;
+ goto \&$Config::AUTOLOAD;
+}
+
+1;
ENDOFEND
if ($^O eq 'os2') {
- print CONFIG <<'ENDOFSET';
+ $config_txt .= <<'ENDOFSET';
my %preconfig;
if ($OS2::is_aout) {
- my ($value, $v) = $Config_SH =~ m/^used_aout='(.*)'\s*$/m;
+ my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m;
for (split ' ', $value) {
- ($v) = $Config_SH =~ m/^aout_$_='(.*)'\s*$/m;
+ ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m;
$preconfig{$_} = $v eq 'undef' ? undef : $v;
}
}
$dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/;
}
}
- print CONFIG <<ENDOFSET if $dll;
+ $config_txt .= <<ENDOFSET if $dll;
\$preconfig{dll_name} = '$dll';
ENDOFSET
} else {
- print CONFIG <<'ENDOFSET';
+ $config_txt .= <<'ENDOFSET';
sub TIEHASH {
bless $_[1], $_[0];
}
ENDOFSET
}
-
-# Calculation for the keys for byteorder
-# This is somewhat grim, but I need to run fetch_string here.
-our $Config_SH = join "\n", @v_fast, @v_others;
-
-my $t = fetch_string ({}, 'ivtype');
-my $s = fetch_string ({}, 'ivsize');
-
-# byteorder does exist on its own but we overlay a virtual
-# dynamically recomputed value.
-
-# However, ivtype and ivsize will not vary for sane fat binaries
-
-my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
-
-my $byteorder_code;
-if ($s == 4 || $s == 8) {
- my $list = join ',', reverse(2..$s);
- my $format = 'a'x$s;
- $byteorder_code = <<"EOT";
-my \$i = 0;
-foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 }
-\$i |= ord(1);
-my \$value = join('', unpack('$format', pack('$f', \$i)));
-EOT
-} else {
- $byteorder_code = "\$value = '?'x$s;\n";
+foreach my $key (keys %Common) {
+ my $value = fetch_string ({}, $key);
+ # Is it safe on the LHS of => ?
+ my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'";
+ if (defined $value) {
+ # Quote things for a '' string
+ $value =~ s!\\!\\\\!g;
+ $value =~ s!'!\\'!g;
+ $value = "'$value'";
+ if ($key eq 'otherlibdirs') {
+ $value = "join (':', map {relocate_inc(\$_)} split (':', $value))";
+ } elsif ($need_relocation{$key}) {
+ $value = "relocate_inc($value)";
+ }
+ } else {
+ $value = "undef";
+ }
+ $Common{$key} = "$qkey => $value";
}
-my $fast_config = join '', map { " $_,\n" }
- values (%v_fast), 'byteorder => $value' ;
+if ($Common{byteorder}) {
+ $Common{byteorder} = 'byteorder => $byteorder';
+}
+my $fast_config = join '', map { " $_,\n" } sort values %Common;
-print CONFIG sprintf <<'ENDOFTIE', $byteorder_code, $fast_config;
+# Sanity check needed to stop an infite loop if Config_heavy.pl fails to define
+# &launcher for some reason (eg it got truncated)
+$config_txt .= sprintf <<'ENDOFTIE', $fast_config;
-# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD
sub DESTROY { }
-%s
+sub AUTOLOAD {
+ require 'Config_heavy.pl';
+ goto \&launcher unless $Config::AUTOLOAD =~ /launcher$/;
+ die "&Config::AUTOLOAD failed on $Config::AUTOLOAD";
+}
+# tie returns the object, so the value returned to require will be true.
tie %%Config, 'Config', {
-%s
-};
-
-1;
+%s};
ENDOFTIE
-open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!";
+open(CONFIG_POD, ">$Config_POD") or die "Can't open $Config_POD: $!";
print CONFIG_POD <<'ENDOFTAIL';
=head1 NAME
=head1 SYNOPSIS
use Config;
- if ($Config{'cc'} =~ /gcc/) {
- print "built by gcc\n";
+ if ($Config{usethreads}) {
+ print "has thread support\n"
}
use Config qw(myconfig config_sh config_vars config_re);
values. The perl C<exists> function can be used to check if a
named variable exists.
+For a description of the variables, please have a look at the
+Glossary file, as written in the Porting folder, or use the url:
+http://perl5.git.perl.org/perl.git/blob/HEAD:/Porting/Glossary
+
=over 4
=item myconfig()
specific to that particular port. See the port specific documentation
in such cases.
+=cut
+
ENDOFTAIL
if ($Opts{glossary}) {
open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
}
-%seen = ();
-$text = 0;
+my %seen = ();
+my $text = 0;
$/ = '';
sub process {
print CONFIG_POD <<EOF if $text;
=back
+=cut
+
EOF
print CONFIG_POD <<EOF;
=head2 $c
=over 4
+=cut
+
EOF
$text = 1;
}
=back
+=head1 GIT DATA
+
+Information on the git commit from which the current perl binary was compiled
+can be found in the variable C<$Config::Git_Data>. The variable is a
+structured string that looks something like this:
+
+ git_commit_id='ea0c2dbd5f5ac6845ecc7ec6696415bf8e27bd52'
+ git_describe='GitLive-blead-1076-gea0c2db'
+ git_branch='smartmatch'
+ git_uncommitted_changes=''
+ git_commit_id_title='Commit id:'
+ git_commit_date='2009-05-09 17:47:31 +0200'
+
+Its format is not guaranteed not to change over time.
+
=head1 NOTE
This module contains a good example of how to use tie to implement a
ENDOFTAIL
-close(CONFIG);
-close(GLOS);
+close(GLOS) if $Opts{glossary};
close(CONFIG_POD);
+print "written $Config_POD\n";
+
+my $orig_config_txt = "";
+my $orig_heavy_txt = "";
+{
+ local $/;
+ my $fh;
+ $orig_config_txt = <$fh> if open $fh, "<", $Config_PM;
+ $orig_heavy_txt = <$fh> if open $fh, "<", $Config_heavy;
+}
+
+if ($orig_config_txt ne $config_txt or $orig_heavy_txt ne $heavy_txt) {
+ open CONFIG, ">", $Config_PM or die "Can't open $Config_PM: $!\n";
+ open CONFIG_HEAVY, ">", $Config_heavy or die "Can't open $Config_heavy: $!\n";
+ print CONFIG $config_txt;
+ print CONFIG_HEAVY $heavy_txt;
+ close(CONFIG_HEAVY);
+ close(CONFIG);
+ print "updated $Config_PM\n";
+ print "updated $Config_heavy\n";
+}
+
# Now create Cross.pm if needed
if ($Opts{cross}) {
$cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g;
print CROSS $cross;
close CROSS;
+ print "written lib/Cross.pm\n";
+ unshift(@INC,"xlib/$Opts{cross}");
}
# Now do some simple tests on the Config.pm file we have created
unshift(@INC,'lib');
+unshift(@INC,'xlib/symbian') if $Opts{cross};
require $Config_PM;
+require $Config_heavy;
import Config;
die "$0: $Config_PM not valid"
exit 0;
+# Popularity of various entries in %Config, based on a large build and test
+# run of code in the Fotango build system:
+__DATA__
+path_sep: 8490
+d_readlink: 7101
+d_symlink: 7101
+archlibexp: 4318
+sitearchexp: 4305
+sitelibexp: 4305
+privlibexp: 4163
+ldlibpthname: 4041
+libpth: 2134
+archname: 1591
+exe_ext: 1256
+scriptdir: 1155
+version: 1116
+useithreads: 1002
+osvers: 982
+osname: 851
+inc_version_list: 783
+dont_use_nlink: 779
+intsize: 759
+usevendorprefix: 642
+dlsrc: 624
+cc: 541
+lib_ext: 520
+so: 512
+ld: 501
+ccdlflags: 500
+ldflags: 495
+obj_ext: 495
+cccdlflags: 493
+lddlflags: 493
+ar: 492
+dlext: 492
+libc: 492
+ranlib: 492
+full_ar: 491
+vendorarchexp: 491
+vendorlibexp: 491
+installman1dir: 489
+installman3dir: 489
+installsitebin: 489
+installsiteman1dir: 489
+installsiteman3dir: 489
+installvendorman1dir: 489
+installvendorman3dir: 489
+d_flexfnam: 474
+eunicefix: 360
+d_link: 347
+installsitearch: 344
+installscript: 341
+installprivlib: 337
+binexp: 336
+installarchlib: 336
+installprefixexp: 336
+installsitelib: 336
+installstyle: 336
+installvendorarch: 336
+installvendorbin: 336
+installvendorlib: 336
+man1ext: 336
+man3ext: 336
+sh: 336
+siteprefixexp: 336
+installbin: 335
+usedl: 332
+ccflags: 285
+startperl: 232
+optimize: 231
+usemymalloc: 229
+cpprun: 228
+sharpbang: 228
+perllibs: 225
+usesfio: 224
+usethreads: 220
+perlpath: 218
+extensions: 217
+usesocks: 208
+shellflags: 198
+make: 191
+d_pwage: 189
+d_pwchange: 189
+d_pwclass: 189
+d_pwcomment: 189
+d_pwexpire: 189
+d_pwgecos: 189
+d_pwpasswd: 189
+d_pwquota: 189
+gccversion: 189
+libs: 186
+useshrplib: 186
+cppflags: 185
+ptrsize: 185
+shrpenv: 185
+static_ext: 185
+use5005threads: 185
+uselargefiles: 185
+alignbytes: 184
+byteorder: 184
+ccversion: 184
+config_args: 184
+cppminus: 184
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