#!./miniperl -w
+use strict;
+use vars qw(%Config $Config_SH_expanded);
-# commonly used names to put first (and hence lookup fastest)
-my %Common = map {($_,$_)}
- qw(archname osname osvers prefix libs libpth
- dynamic_ext static_ext dlsrc so
- cc ccflags cppflags
- privlibexp archlibexp installprivlib installarchlib
- sharpbang startsh shsharp
- );
+my $how_many_common = 22;
+
+# commonly used names to precache (and hence lookup fastest)
+my %Common;
+
+while ($how_many_common--) {
+ $_ = <DATA>;
+ chomp;
+ /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
+ $Common{$1} = $1;
+}
# names of things which may need to have slashes changed to double-colons
my %Extensions = map {($_,$_)}
# 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
+ 'heavy' => '', # pathname of the Config_heavy.pl file
);
sub opts {
my %Opts = opts();
-my $Config_PM;
+my ($Config_PM, $Config_heavy);
my $Glossary = $ARGV[1] || 'Porting/Glossary';
if ($Opts{cross}) {
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.
+
+package Config;
+use strict;
+# use warnings; Pulls in Carp
+# use vars pulls in Carp
+ENDOFBEG
my $myver = sprintf "v%vd", $^V;
# made to this file will be lost the next time perl is built.
package Config;
-@EXPORT = qw(%%Config);
-@EXPORT_OK = qw(myconfig config_sh config_vars config_re);
+use strict;
+# use warnings; Pulls in Carp
+# use vars pulls in Carp
+@Config::EXPORT = qw(%%Config);
+@Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re);
-my %%Export_Cache = map {($_ => 1)} (@EXPORT, @EXPORT_OK);
+# 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;
- @_ = @EXPORT unless @_;
+ @_ = @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},
my @non_v = ();
my @v_fast = ();
-my %v_fast = ();
my @v_others = ();
my $in_v = 0;
my %Data = ();
my $marker = "$key=";
# Check for the common case, ' delimited
- my $start = index($Config_SH, "\n$marker$quote_type");
+ 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, "\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;
+ $start = index($Config_SH_expanded, "\n$marker$quote_type");
}
+ # 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;
- my $value = substr($Config_SH, $start,
- index($Config_SH, "$quote_type\n", $start) - $start);
+ $start += length($marker) + 2;
+
+ 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
eval $fetch_string;
die if $@;
-open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!";
-while (<CONFIG_SH>) {
+{
+ my ($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 .= $_;
}
}
else {
push(@v_fast, $line);
- $v_fast{$name} = "'$name' => $quote$val$quote";
}
+ }
+ close CONFIG_SH;
}
-close CONFIG_SH;
-print CONFIG @non_v, "\n";
+
+# 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_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);
+our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
+EOT
+} else {
+ $byteorder_code = "our \$byteorder = '?'x$s;\n";
+}
+
+print CONFIG_HEAVY @non_v, "\n";
# copy config summary format from the myconfig.SH script
-print CONFIG "our \$summary : unique = <<'!END!';\n";
+print CONFIG_HEAVY "our \$summary : unique = <<'!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 { print CONFIG_HEAVY $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
close(MYCONFIG);
# NB. as $summary is unique, we need to copy it in a lexical variable
# before expanding it, because may have been made readonly if a perl
# interpreter has been cloned.
-print CONFIG "\n!END!\n", <<'EOT';
+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{$1}; defined($c) ? $c : 'undef' }ge;
+ { my $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);
+print CONFIG_HEAVY join('', @v_fast, sort @v_others), "!END!\n";
-print CONFIG "!END!\n", $fetch_string;
+# Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of
+# the precached keys
+if ($Common{byteorder}) {
+ print CONFIG $byteorder_code;
+} else {
+ print CONFIG_HEAVY $byteorder_code;
+}
-print CONFIG <<'ENDOFEND';
+print CONFIG_HEAVY <<'EOT';
+s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
-sub fetch_virtual {
- my($self, $key) = @_;
+my $config_sh_len = length $_;
+
+our $Config_SH_expanded : unique = "\n$_" . << 'EOVIRTUAL';
+EOT
+
+foreach my $prefix (qw(ccflags ldflags)) {
+ my $value = fetch_string ({}, $prefix);
+ my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles");
+ $value =~ s/\Q$withlargefiles\E\b//;
+ print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
+}
- 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(libs libswanted)) {
+ my $value = fetch_string ({}, $prefix);
+ my @lflibswanted
+ = split(' ', fetch_string ({}, 'libswanted_uselargefiles'));
+ if (@lflibswanted) {
+ my %lflibswanted;
+ @lflibswanted{@lflibswanted} = ();
+ if ($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);
}
}
-
- $self->{$key} = $value;
+ print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n";
}
-sub FETCH {
+print CONFIG_HEAVY "EOVIRTUAL\n";
+
+print CONFIG_HEAVY $fetch_string;
+
+print CONFIG <<'ENDOFEND';
+
+sub FETCH {
my($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
+
+print CONFIG_HEAVY <<'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 {
# 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;
+ 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 or
+ index($Config_SH_expanded, "\n$_[1]=\"") != -1
);
}
sub config_sh {
- $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;
+ 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,
- my $prfx = $notag ? '': "$qry="; # prefix for print
- my $lnend = $lncont ? ' ' : ";\n"; # ending for print
+ # 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 $Config{$qry}) ? $Config{$qry} : 'UNKNOWN';
+ 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) = $Config_SH =~ m/^used_aout='(.*)'\s*$/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;
}
}
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'";
+ } else {
+ $value = "undef";
+ }
+ $Common{$key} = "$qkey => $value";
}
-my $fast_config = join '', map { " $_,\n" }
- sort 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;
+print CONFIG sprintf <<'ENDOFTIE', $fast_config;
-# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD
sub DESTROY { }
-%s
+sub AUTOLOAD {
+ require 'Config_heavy.pl';
+ goto \&launcher;
+ die "&Config::AUTOLOAD failed on $Config::AUTOLOAD";
+}
tie %%Config, 'Config', {
-%s
-};
+%s};
1;
ENDOFTIE
if ($Opts{glossary}) {
open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
}
-%seen = ();
-$text = 0;
+my %seen = ();
+my $text = 0;
$/ = '';
sub process {
ENDOFTAIL
+close(CONFIG_HEAVY);
close(CONFIG);
close(GLOS);
close(CONFIG_POD);
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
https://perl5.git.perl.org / perl5.git / blobdiff