#!./miniperl -w
+use strict;
+use vars qw(%Config $Config_SH_expanded);
-$config_pm = $ARGV[0] || 'lib/Config.pm';
-@ARGV = "./config.sh";
+my $how_many_common = 22;
-# list names to put first (and hence lookup fastest)
-@fast = qw(osname osvers so libpth archlib
- sharpbang startsh shsharp
- dynamic_ext static_ext extensions dl_src
- sig_name ccflags cppflags intsize);
+# commonly used names to precache (and hence lookup fastest)
+my %Common;
+
+while ($how_many_common--) {
+ $_ = <DATA>;
+ chomp;
+ /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
+ $Common{$1} = $1;
+}
# names of things which may need to have slashes changed to double-colons
-@extensions = qw(dynamic_ext static_ext extensions known_extensions);
+my %Extensions = map {($_,$_)}
+ qw(dynamic_ext static_ext extensions known_extensions);
+
+# allowed opts as well as specifies default and initial values
+my %Allowed_Opts = (
+ 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM
+ 'glossary' => 1, # --no-glossary - no glossary file inclusion,
+ # for compactness
+ 'heavy' => '', # pathname of the Config_heavy.pl file
+);
+
+sub opts {
+ # user specified options
+ my %given_opts = (
+ # --opt=smth
+ (map {/^--([\-_\w]+)=(.*)$/} @ARGV),
+ # --opt --no-opt --noopt
+ (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV),
+ );
+
+ my %opts = (%Allowed_Opts, %given_opts);
+
+ for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) {
+ die "option '$opt' is not recognized";
+ }
+ @ARGV = grep {!/^--/} @ARGV;
+ return %opts;
+}
+
+
+my %Opts = opts();
+
+my ($Config_PM, $Config_heavy);
+my $Glossary = $ARGV[1] || 'Porting/Glossary';
+
+if ($Opts{cross}) {
+ # creating cross-platform config file
+ mkdir "xlib";
+ mkdir "xlib/$Opts{cross}";
+ $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm";
+}
+else {
+ $Config_PM = $ARGV[0] || 'lib/Config.pm';
+}
+if ($Opts{heavy}) {
+ $Config_heavy = $Opts{heavy};
+}
+else {
+ ($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 $Config_PM;
+}
+
+open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n";
+open CONFIG_HEAVY, ">$Config_heavy" or die "Can't open $Config_heavy: $!\n";
+
+print CONFIG_HEAVY <<'ENDOFBEG';
+# This file was created by configpm when Perl was built. Any changes
+# made to this file will be lost the next time perl is built.
-open CONFIG, ">$config_pm" or die "Can't open $config_pm: $!\n";
-$myver = sprintf("%.3f", $]);
-print CONFIG <<"ENDOFBEG";
package Config;
-require Exporter;
-\@ISA = (Exporter);
-\@EXPORT = qw(%Config);
+use strict;
+# use warnings; Pulls in Carp
+# use vars pulls in Carp
+ENDOFBEG
-\$] == $myver or die sprintf
- "Perl lib version ($myver) doesn't match executable version (%.3f)\\n", \$];
+my $myver = sprintf "%vd", $^V;
+printf CONFIG <<'ENDOFBEG', ($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.
+package Config;
+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)} (@Config::EXPORT, @Config::EXPORT_OK);
+
+our %%Config;
+
+# Define our own import method to avoid pulling in the full Exporter:
+sub import {
+ my $pkg = 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};
+ *{$callpkg.'::'.$func} = \&{$func};
+ }
+
+ *{"$callpkg\::Config"} = \%%Config if $export_Config;
+ return;
+}
+
+die "Perl lib version (%s) doesn't match executable version ($])"
+ unless $^V;
+
+$^V eq %s
+ or die "Perl lib version (%s) doesn't match executable version (" .
+ sprintf("v%%vd",$^V) . ")";
+
ENDOFBEG
-@fast{@fast} = @fast;
-@extensions{@extensions} = @extensions;
-@non_v=();
-@v_fast=();
-@v_others=();
-while (<>) {
+my @non_v = ();
+my @v_others = ();
+my $in_v = 0;
+my %Data = ();
+
+
+my %seen_quotes;
+{
+ my ($name, $val);
+ open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!";
+ while (<CONFIG_SH>) {
next if m:^#!/bin/sh:;
- # Catch CONFIG=true and PATCHLEVEL=n line from Configure.
- s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/;
- unless (m/^(\w+)='(.*)'\s*$/){
+
+ # Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
+ s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/;
+ 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 ($k eq 'PERL_CONFIG_SH') {
+ push @v_others, "CONFIG='$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 = $1;
- if ($extensions{$name}) { s,/,::,g }
- if (!$fast{$name}){ push(@v_others, $_); next; }
- push(@v_fast,$_);
+ my $quote = $2;
+ if ($in_v) {
+ $val .= $_;
+ }
+ else {
+ ($name,$val) = ($1,$3);
+ }
+ $in_v = $val !~ /$quote\n/;
+ next if $in_v;
+
+ s,/,::,g if $Extensions{$name};
+
+ $val =~ s/$quote\n?\z//;
+
+ my $line = "$name=$quote$val$quote\n";
+ 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';
+ my $quote_type = "'";
+ my $marker = "$key=";
+
+ # Check for the common case, ' delimited
+ my $start = index($Config_SH_expanded, "\n$marker$quote_type");
+ # If that failed, check for " delimited
+ if ($start == -1) {
+ $quote_type = '"';
+ $start = index($Config_SH_expanded, "\n$marker$quote_type");
+ }
+EOT
+} else {
+ $fetch_string .= <<'EOT';
+ # We only have ' delimted.
+ my $start = index($Config_SH_expanded, "\n$key=\'");
+EOT
+}
+$fetch_string .= <<'EOT';
+ # Start can never be -1 now, as we've rigged the long string we're
+ # searching with an initial dummy newline.
+ return undef if $start == -1;
+
+ $start += length($key) + 3;
+
+EOT
+if (!$seen_quotes{'"'}) {
+ # Don't need the full ' and " code, or the eval expansion.
+ $fetch_string .= <<'EOT';
+ my $value = substr($Config_SH_expanded, $start,
+ index($Config_SH_expanded, "'\n", $start)
+ - $start);
+EOT
+} else {
+ $fetch_string .= <<'EOT';
+ my $value = substr($Config_SH_expanded, $start,
+ index($Config_SH_expanded, "$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\"";
+ }
+EOT
+}
+$fetch_string .= <<'EOT';
+ # So we can say "if $Config{'foo'}".
+ $value = undef if $value eq 'undef';
+ $self->{$key} = $value; # cache it
+}
+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) {
+ print CONFIG $relocation_code;
+ } else {
+ print CONFIG_HEAVY $relocation_code;
+ }
+}
+
+print CONFIG_HEAVY @non_v, "\n";
+
+# copy config summary format from the myconfig.SH script
+print CONFIG_HEAVY "our \$summary = <<'!END!';\n";
+open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!";
+1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
+do { print CONFIG_HEAVY $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
+close(MYCONFIG);
+
+print CONFIG_HEAVY "\n!END!\n", <<'EOT';
+my $summary_expanded;
+
+sub myconfig {
+ return $summary_expanded if $summary_expanded;
+ ($summary_expanded = $summary) =~ s{\$(\w+)}
+ { my $c = $Config::Config{$1}; defined($c) ? $c : 'undef' }ge;
+ $summary_expanded;
+}
+
+local *_ = \my $a;
+$_ = <<'!END!';
+EOT
+
+print CONFIG_HEAVY 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}) {
+ print CONFIG $byteorder_code;
+} else {
+ print CONFIG_HEAVY $byteorder_code;
+}
+
+if (@need_relocation) {
+print CONFIG_HEAVY '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}) {
+print CONFIG_HEAVY << 'EOT';
+s{^(otherlibdirs=)(['"])(.*?)\2}
+ {$1 . $2 . join ':', map {relocate_inc($_)} split ':', $3 . $2}me;
+EOT
+}
+}
+
+print CONFIG_HEAVY <<'EOT';
+s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
+
+my $config_sh_len = length $_;
+
+our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL';
+EOT
+
+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//;
+ print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
+ }
}
-foreach(@non_v){ print CONFIG $_ }
+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'));
+ $value = join(' ', @libswanted);
+ }
+ }
+ print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
+}
-print CONFIG "\n",
- "\$config_sh=<<'!END!OF!CONFIG!';\n",
- join("", @v_fast, sort @v_others),
- "!END!OF!CONFIG!\n\n";
+print CONFIG_HEAVY "EOVIRTUAL\n";
+print CONFIG_HEAVY $fetch_string;
print CONFIG <<'ENDOFEND';
-tie %Config, Config;
-sub TIEHASH { bless {} }
-sub FETCH {
- # check for cached value (which maybe undef so we use exists not defined)
- return $_[0]->{$_[1]} if (exists $_[0]->{$_[1]});
-
- my($value); # search for the item in the big $config_sh string
- return undef unless (($value) = $config_sh =~ m/^$_[1]='(.*)'\s*$/m);
-
- $value = undef if $value eq 'undef'; # So we can say "if $Config{'foo'}".
- $_[0]->{$_[1]} = $value; # cache it
- return $value;
-}
-
+sub FETCH {
+ my($self, $key) = @_;
+
+ # check for cached value (which may be undef so we use exists not defined)
+ return $self->{$key} if exists $self->{$key};
+
+ return $self->fetch_string($key);
+}
+ENDOFEND
+
+print CONFIG_HEAVY <<'ENDOFEND';
+
+my $prevpos = 0;
+
sub FIRSTKEY {
$prevpos = 0;
- my $key;
- ($key) = $config_sh =~ m/^(.*)=/;
- $key;
+ substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 );
}
sub NEXTKEY {
- my ($pos, $len);
- $pos = $prevpos;
- $pos = index( $config_sh, "\n", $pos) + 1;
+ENDOFEND
+if ($seen_quotes{'"'}) {
+print CONFIG_HEAVY <<'ENDOFEND';
+ # Find out how the current key's quoted so we can skip to its end.
+ 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.
+print CONFIG_HEAVY <<'ENDOFEND';
+ my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2;
+ENDOFEND
+}
+print CONFIG_HEAVY <<'ENDOFEND';
+ my $len = index($Config_SH_expanded, "=", $pos) - $pos;
$prevpos = $pos;
- $len = index( $config_sh, "=", $pos) - $pos;
- $len > 0 ? substr( $config_sh, $pos, $len) : undef;
+ $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef;
}
-sub EXISTS{
- exists($_[0]->{$_[1]}) or $config_sh =~ m/^$_[1]=/m;
+sub EXISTS {
+ return 1 if exists($_[0]->{$_[1]});
+
+ return(index($Config_SH_expanded, "\n$_[1]='") != -1
+ENDOFEND
+if ($seen_quotes{'"'}) {
+print CONFIG_HEAVY <<'ENDOFEND';
+ or index($Config_SH_expanded, "\n$_[1]=\"") != -1
+ENDOFEND
+}
+print CONFIG_HEAVY <<'ENDOFEND';
+ );
}
-sub readonly { die "\%Config::Config is read-only\n" }
+sub STORE { die "\%Config::Config is read-only\n" }
+*DELETE = \&STORE;
+*CLEAR = \&STORE;
-sub myconfig {
- my($output);
-
- $output = <<'END';
-Summary of my $package (patchlevel $PATCHLEVEL) configuration:
- Platform:
- osname=$osname, osver=$osvers, archname=$archname
- uname='$myuname'
- hint=$hint
- Compiler:
- cc='$cc', optimize='$optimize'
- cppflags='$cppflags'
- ccflags ='$ccflags'
- ldflags ='$ldflags'
- stdchar='$stdchar', d_stdstdio=$d_stdstdio, usevfork=$usevfork
- voidflags=$voidflags, castflags=$castflags, d_casti32=$d_casti32, d_castneg=$d_castneg
- intsize=$intsize, alignbytes=$alignbytes, usemymalloc=$usemymalloc, randbits=$randbits
- Libraries:
- so=$so
- libpth=$libpth
- libs=$libs
- libc=$libc
- Dynamic Linking:
- dlsrc=$dlsrc, dlext=$dlext, d_dlsymun=$d_dlsymun
- cccdlflags='$cccdlflags', ccdlflags='$ccdlflags', lddlflags='$lddlflags'
-
-END
- $output =~ s/\$(\w+)/$Config{$1}/ge;
- $output;
-}
-
-sub STORE { &readonly }
-sub DELETE{ &readonly }
-sub CLEAR { &readonly }
+sub config_sh {
+ substr $Config_SH_expanded, 1, $config_sh_len;
+}
+
+sub config_re {
+ my $re = shift;
+ return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/,
+ $Config_SH_expanded;
+}
+
+sub config_vars {
+ # implements -V:cfgvar option (see perlrun -V:)
+ foreach (@_) {
+ # find optional leading, trailing colons; and query-spec
+ my ($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 $Config::Config{$qry}) ? $Config::Config{$qry}
+ : 'UNKNOWN';
+ $v = 'undef' unless defined $v;
+ print "${prfx}'${v}'$lnend";
+ }
+ }
+}
+
+# Called by the real AUTOLOAD
+sub launcher {
+ undef &AUTOLOAD;
+ goto \&$Config::AUTOLOAD;
+}
1;
ENDOFEND
+if ($^O eq 'os2') {
+ print CONFIG <<'ENDOFSET';
+my %preconfig;
+if ($OS2::is_aout) {
+ my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m;
+ for (split ' ', $value) {
+ ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m;
+ $preconfig{$_} = $v eq 'undef' ? undef : $v;
+ }
+}
+$preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't
+sub TIEHASH { bless {%preconfig} }
+ENDOFSET
+ # Extract the name of the DLL from the makefile to avoid duplication
+ my ($f) = grep -r, qw(GNUMakefile Makefile);
+ my $dll;
+ if (open my $fh, '<', $f) {
+ while (<$fh>) {
+ $dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/;
+ }
+ }
+ print CONFIG <<ENDOFSET if $dll;
+\$preconfig{dll_name} = '$dll';
+ENDOFSET
+} else {
+ print CONFIG <<'ENDOFSET';
+sub TIEHASH {
+ bless $_[1], $_[0];
+}
+ENDOFSET
+}
+
+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 => $value";
+}
+
+if ($Common{byteorder}) {
+ $Common{byteorder} = 'byteorder => $byteorder';
+}
+my $fast_config = join '', map { " $_,\n" } sort values %Common;
+
+# Sanity check needed to stop an infite loop if Config_heavy.pl fails to define
+# &launcher for some reason (eg it got truncated)
+print CONFIG sprintf <<'ENDOFTIE', $fast_config;
+
+sub DESTROY { }
+
+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};
+ENDOFTIE
+
+
+open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!";
+print CONFIG_POD <<'ENDOFTAIL';
+=head1 NAME
+
+Config - access Perl configuration information
+
+=head1 SYNOPSIS
+
+ use Config;
+ if ($Config{usethreads}) {
+ print "has thread support\n"
+ }
+
+ use Config qw(myconfig config_sh config_vars config_re);
+
+ print myconfig();
+
+ print config_sh();
+
+ print config_re();
+
+ config_vars(qw(osname archname));
+
+
+=head1 DESCRIPTION
+
+The Config module contains all the information that was available to
+the C<Configure> program at Perl build time (over 900 values).
+
+Shell variables from the F<config.sh> file (written by Configure) are
+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 if a
+named variable exists.
+
+=over 4
+
+=item myconfig()
+
+Returns a textual summary of the major perl configuration values.
+See also C<-V> in L<perlrun/Switches>.
+
+=item config_sh()
+
+Returns the entire perl configuration information in the form of the
+original config.sh shell variable assignment script.
+
+=item config_re($regex)
+
+Like config_sh() but returns, as a list, only the config entries who's
+names match the $regex.
+
+=item config_vars(@names)
+
+Prints to STDOUT the values of the named configuration variable. Each is
+printed on a separate line in the form:
+
+ name='value';
+
+Names which are unknown are output as C<name='UNKNOWN';>.
+See also C<-V:name> in L<perlrun/Switches>.
+
+=back
+
+=head1 EXAMPLE
+
+Here's a more sophisticated example of using %Config:
+
+ use Config;
+ use strict;
+
+ my %sig_num;
+ my @sig_name;
+ unless($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{$_}] ||= $_;
+ }
+ }
+
+ print "signal #17 = $sig_name[17]\n";
+ if ($sig_num{ALRM}) {
+ print "SIGALRM is $sig_num{ALRM}\n";
+ }
+
+=head1 WARNING
+
+Because this information is not stored within the perl executable
+itself it is possible (but unlikely) that the information does not
+relate to the actual perl binary which is being used to access it.
+
+The Config module is installed into the architecture and version
+specific library directory ($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
+
+if ($Opts{glossary}) {
+ open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
+}
+my %seen = ();
+my $text = 0;
+$/ = '';
+
+sub process {
+ if (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_POD <<EOF if $text;
+=back
+
+EOF
+ print CONFIG_POD <<EOF;
+=head2 $c
+
+=over 4
+
+EOF
+ $text = 1;
+ }
+ }
+ elsif (!$text || !/\A\t/) {
+ warn "Expected a Configure variable header",
+ ($text ? " or another paragraph of description" : () );
+ }
+ s/n't/n\00t/g; # leave can't, won't etc untouched
+ s/^\t\s+(.*)/\n$1/gm; # Indented lines ===> new paragraph
+ 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
+ (?! read/ ) # Not read/write
+ (?! etc\. ) # Not etc.
+ (?! I/O ) # Not I/O
+ (
+ \$ ? # Allow leading $
+ [\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<$1> macro/g; # FILE_cnt macro
+ s/n[\0]t/n't/g; # undo can't, won't damage
+}
+
+if ($Opts{glossary}) {
+ <GLOS>; # Skip the "DO NOT EDIT"
+ <GLOS>; # Skip the preamble
+ while (<GLOS>) {
+ process;
+ print CONFIG_POD;
+ }
+}
+
+print CONFIG_POD <<'ENDOFTAIL';
+
+=back
+
+=head1 NOTE
+
+This module contains a good example of how to use tie to implement a
+cache and an example of how to make a tied variable readonly to those
+outside of it.
+
+=cut
+
+ENDOFTAIL
+
+close(CONFIG_HEAVY);
close(CONFIG);
+close(GLOS);
+close(CONFIG_POD);
+
+# Now create Cross.pm if needed
+if ($Opts{cross}) {
+ open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!";
+ my $cross = <<'EOS';
+# typical invocation:
+# perl -MCross Makefile.PL
+# perl -MCross=wince -V:cc
+package Cross;
+
+sub import {
+ my ($package,$platform) = @_;
+ unless (defined $platform) {
+ # if $platform is not specified, then use last one when
+ # 'configpm; was invoked with --cross option
+ $platform = '***replace-marker***';
+ }
+ @INC = map {/\blib\b/?(do{local $_=$_;s/\blib\b/xlib\/$platform/;$_},$_):($_)} @INC;
+ $::Cross::platform = $platform;
+}
+
+1;
+EOS
+ $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g;
+ print CROSS $cross;
+ close CROSS;
+ unshift(@INC,"xlib/$Opts{cross}");
+}
# Now do some simple tests on the Config.pm file we have created
unshift(@INC,'lib');
-require $config_pm;
+unshift(@INC,'xlib/symbian') if $Opts{cross};
+require $Config_PM;
+require $Config_heavy;
import Config;
-die "$0: $config_pm not valid"
- unless $Config{'CONFIG'} eq 'true';
+die "$0: $Config_PM not valid"
+ unless $Config{'PERL_CONFIG_SH'} eq 'true';
-die "$0: error processing $config_pm"
+die "$0: error processing $Config_PM"
if defined($Config{'an impossible name'})
- or $Config{'CONFIG'} ne 'true' # test cache
+ or $Config{'PERL_CONFIG_SH'} ne 'true' # test cache
;
-die "$0: error processing $config_pm"
+die "$0: error processing $Config_PM"
if eval '$Config{"cc"} = 1'
or eval 'delete $Config{"cc"}'
;
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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