#!./miniperl -w
-# following options are recognized:
-# --no-glossary - no glossary file inclusion, for compactness
-# --cross=PALTFORM - crosscompiling for PLATFORM
-my %opts = (
- # %known_opts enumerates allowed opts as well as specifies default and initial values
- my %known_opts = (
- 'cross' => '',
- 'glossary' => 1,
- ),
- # options itself
- my %specified_opts = (
- (map {/^--([\-_\w]+)=(.*)$/} @ARGV), # --opt=smth
- (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV), # --opt --no-opt --noopt
- ),
+# commonly used names to put first (and hence lookup fastest)
+my %Common = map {($_,$_)}
+ qw(archname osname osvers prefix libs libpth
+ dynamic_ext static_ext dlsrc so
+ cc ccflags cppflags
+ privlibexp archlibexp installprivlib installarchlib
+ sharpbang startsh shsharp
+ );
+
+# names of things which may need to have slashes changed to double-colons
+my %Extensions = map {($_,$_)}
+ qw(dynamic_ext static_ext extensions known_extensions);
+
+# allowed opts as well as specifies default and initial values
+my %Allowed_Opts = (
+ 'cross' => '', # --cross=PALTFORM - crosscompiling for PLATFORM
+ 'glossary' => 1, # --no-glossary - no glossary file inclusion,
+ # for compactness
);
-die "option '$_' is not recognized" for grep {!exists $known_opts{$_}} keys %specified_opts;
-@ARGV = grep {!/^--/} @ARGV;
-my $config_pm;
-my $glossary = $ARGV[1] || 'Porting/Glossary';
+sub opts {
+ # user specified options
+ my %given_opts = (
+ # --opt=smth
+ (map {/^--([\-_\w]+)=(.*)$/} @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 '$opt' is not recognized";
+ }
+ @ARGV = grep {!/^--/} @ARGV;
+
+ return %opts;
+}
-if ($opts{cross}) {
+
+my %Opts = opts();
+
+my $Config_PM;
+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";
+ mkdir "xlib/$Opts{cross}";
+ $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm";
}
else {
- $config_pm = $ARGV[0] || 'lib/Config.pm';
+ $Config_PM = $ARGV[0] || 'lib/Config.pm';
}
-@ARGV = "./config.sh";
-# list names to put first (and hence lookup fastest)
-@fast = qw(archname osname osvers prefix libs libpth
- dynamic_ext static_ext extensions dlsrc so
- sig_name sig_num cc ccflags cppflags
- privlibexp archlibexp installprivlib installarchlib
- sharpbang startsh shsharp
-);
-
-# names of things which may need to have slashes changed to double-colons
-@extensions = qw(dynamic_ext static_ext extensions known_extensions);
+open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n";
+my $myver = sprintf "v%vd", $^V;
-open CONFIG, ">$config_pm" or die "Can't open $config_pm: $!\n";
-$myver = sprintf "v%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.
-print CONFIG <<'ENDOFBEG_NOQ', <<"ENDOFBEG";
package Config;
use Exporter ();
-@EXPORT = qw(%Config);
+@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'} @_;
+
+ 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;
+ *{"$callpkg\::Config"} = \%%Config;
}
-ENDOFBEG_NOQ
-die "Perl lib version ($myver) doesn't match executable version (\$])"
- unless \$^V;
+die "Perl lib version (%s) doesn't match executable version ($])"
+ unless $^V;
-\$^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.
+$^V eq %s
+ or die "Perl lib version (%s) doesn't match executable version (" .
+ (sprintf "v%vd",$^V) . ")";
ENDOFBEG
-@fast{@fast} = @fast;
-@extensions{@extensions} = @extensions;
-@non_v=();
-@v_fast=();
-@v_others=();
-$in_v = 0;
+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, ' delimeted
+ 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 $@;
-while (<>) {
+open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!";
+while (<CONFIG_SH>) {
next if m:^#!/bin/sh:;
+
# Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
- s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/;
- my ($k,$v) = ($1,$2);
+ my($k, $v) = s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/;
+
# grandfather PATCHLEVEL and SUBVERSION and CONFIG
if ($k) {
if ($k eq 'PERL_VERSION') {
push @v_others, "CONFIG='$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;
}
$quote = $2;
- if ($in_v) { $val .= $_; }
- else { ($name,$val) = ($1,$3); }
+ if ($in_v) {
+ $val .= $_;
+ }
+ else {
+ ($name,$val) = ($1,$3);
+ }
$in_v = $val !~ /$quote\n/;
next if $in_v;
- if ($extensions{$name}) { s,/,::,g }
- if (!$fast{$name}){ push(@v_others, "$name=$quote$val"); next; }
- push(@v_fast,"$name=$quote$val");
-}
-foreach(@non_v){ print CONFIG $_ }
+ s,/,::,g if $Extensions{$name};
-print CONFIG "\n",
- "my \$config_sh = <<'!END!';\n",
- join("", @v_fast, sort @v_others),
- "!END!\n\n";
+ $val =~ s/$quote\n?\z//;
-# copy config summary format from the myconfig.SH script
+ my $line = "$name=$quote$val$quote\n";
+ if (!$Common{$name}){
+ push(@v_others, $line);
+ }
+ else {
+ push(@v_fast, $line);
+ $v_fast{$name} = "'$name' => $quote$val$quote";
+ }
+}
+close CONFIG_SH;
-print CONFIG "my \$summary = <<'!END!';\n";
+print CONFIG @non_v, "\n";
+# copy config summary format from the myconfig.SH script
+print CONFIG "my \$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*$/;
$summary_expanded = 1;
$summary;
}
+
+our $Config_SH : shared = <<'!END!';
EOT
-# ----
+print CONFIG join("", @v_fast, sort @v_others);
+
+print CONFIG "!END!\n", $fetch_string;
print CONFIG <<'ENDOFEND';
-sub FETCH {
- # 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);
-
- $quote_type = "'";
- # Virtual entries.
- if ($_[1] eq 'byteorder') {
- # byteorder does exist on its own but we overlay a virtual
- # dynamically recomputed value.
- my $t = $Config{ivtype};
- my $s = $Config{ivsize};
- my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
- if ($s == 4 || $s == 8) {
- my $i = 0;
- foreach my $c (reverse(2..$s)) { $i |= ord($c); $i <<= 8 }
- $i |= ord(1);
- $value = join('', unpack('a'x$s, pack($f, $i)));
- } else {
- $value = '?'x$s;
- }
- } elsif ($_[1] =~ /^((?:cc|ld)flags|libs(?:wanted)?)_nolargefiles/) {
+sub fetch_virtual {
+ my($self, $key) = @_;
+
+ 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 $key = "${1}_uselargefiles";
+ my $new_key = "${1}_uselargefiles";
$value = $Config{$1};
- my $withlargefiles = $Config{$key};
- if ($key =~ /^(?:cc|ld)flags_/) {
+ my $withlargefiles = $Config{$new_key};
+ if ($new_key =~ /^(?:cc|ld)flags_/) {
$value =~ s/\Q$withlargefiles\E\b//;
- } elsif ($key =~ /^libs/) {
+ } elsif ($new_key =~ /^libs/) {
my @lflibswanted = split(' ', $Config{libswanted_uselargefiles});
if (@lflibswanted) {
my %lflibswanted;
@lflibswanted{@lflibswanted} = ();
- if ($key =~ /^libs_/) {
+ if ($new_key =~ /^libs_/) {
my @libs = grep { /^-l(.+)/ &&
not exists $lflibswanted{$1} }
split(' ', $Config{libs});
$Config{libs} = join(' ', @libs);
- } elsif ($key =~ /^libswanted_/) {
+ } elsif ($new_key =~ /^libswanted_/) {
my @libswanted = grep { not exists $lflibswanted{$_} }
split(' ', $Config{libswanted});
$Config{libswanted} = join(' ', @libswanted);
}
}
}
- } else {
- $marker = "$_[1]=";
- # 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) - $start);
}
- # If we had a double-quote, we'd better eval it so escape
- # sequences and such can be interpolated. Since the incoming
- # value is supposed to follow shell rules and not perl rules,
- # we escape any perl variable markers
- if ($quote_type eq '"') {
- $value =~ s/\$/\\\$/g;
- $value =~ s/\@/\\\@/g;
- eval "\$value = \"$value\"";
- }
- #$value = sprintf($value) if $quote_type eq '"';
- # So we can say "if $Config{'foo'}".
- $value = undef if $value eq 'undef';
- $_[0]->{$_[1]} = $value; # cache it
- return $value;
+
+ $self->{$key} = $value;
+}
+
+sub FETCH {
+ my($self, $key) = @_;
+
+ # check for cached value (which may be undef so we use exists not defined)
+ return $self->{$key} if exists $self->{$key};
+
+ $self->fetch_string($key);
+ return $self->{$key} if exists $self->{$key};
+ $self->fetch_virtual($key);
+
+ # Might not exist, in which undef is correct.
+ return $self->{$key};
}
my $prevpos = 0;
sub FIRSTKEY {
$prevpos = 0;
- # my($key) = $config_sh =~ m/^(.*?)=/;
- substr($config_sh, 0, index($config_sh, '=') );
- # $key;
+ substr($Config_SH, 0, index($Config_SH, '=') );
}
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, 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;
+ $len > 0 ? substr($Config_SH, $pos, $len) : undef;
}
sub EXISTS {
- # exists($_[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]=\"" or
- $_[1] =~ /^(?:(?:cc|ld)flags|libs(?:wanted)?)_nolargefiles$/;
+ 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
+ $_[1] =~ /^(?:(?:cc|ld)flags|libs(?:wanted)?)_nolargefiles$/
+ );
}
sub STORE { die "\%Config::Config is read-only\n" }
-sub DELETE { &STORE }
-sub CLEAR { &STORE }
+*DELETE = \&STORE;
+*CLEAR = \&STORE;
sub config_sh {
- $config_sh
+ $Config_SH
}
sub config_re {
my $re = shift;
- my @matches = grep /^$re=/, split /^/, $config_sh;
+ my @matches = grep /^$re=/, split /^/, $Config_SH;
@matches ? (print @matches) : print "$re: not found\n";
}
print CONFIG <<'ENDOFSET';
my %preconfig;
if ($OS2::is_aout) {
- my ($value, $v) = $config_sh =~ m/^used_aout='(.*)'\s*$/m;
+ my ($value, $v) = $Config_SH =~ m/^used_aout='(.*)'\s*$/m;
for (split ' ', $value) {
- ($v) = $config_sh =~ m/^aout_$_='(.*)'\s*$/m;
+ ($v) = $Config_SH =~ m/^aout_$_='(.*)'\s*$/m;
$preconfig{$_} = $v eq 'undef' ? undef : $v;
}
}
ENDOFSET
} else {
print CONFIG <<'ENDOFSET';
-sub TIEHASH { bless {} }
+sub TIEHASH {
+ bless $_[1], $_[0];
+}
ENDOFSET
}
-print CONFIG <<'ENDOFTAIL';
+
+# 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";
+}
+
+my $fast_config = join '', map { " $_,\n" }
+ values (%v_fast), 'byteorder => $value' ;
+
+print CONFIG sprintf <<'ENDOFTIE', $byteorder_code, $fast_config;
# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD
sub DESTROY { }
-tie %Config, 'Config';
+%s
+
+tie %%Config, 'Config', {
+%s
+};
1;
-__END__
+ENDOFTIE
+
+open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!";
+print CONFIG_POD <<'ENDOFTAIL';
=head1 NAME
Config - access Perl configuration information
ENDOFTAIL
-if ($opts{glossary}) {
- open(GLOS, "<$glossary") or die "Can't open $glossary: $!";
+if ($Opts{glossary}) {
+ open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
}
%seen = ();
$text = 0;
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 <<EOF if $text;
+ print CONFIG_POD <<EOF if $text;
=back
EOF
- print CONFIG <<EOF;
+ print CONFIG_POD <<EOF;
=head2 $c
=over 4
s/n[\0]t/n't/g; # undo can't, won't damage
}
-if ($opts{glossary}) {
+if ($Opts{glossary}) {
<GLOS>; # Skip the "DO NOT EDIT"
<GLOS>; # Skip the preamble
while (<GLOS>) {
process;
- print CONFIG;
+ print CONFIG_POD;
}
}
-print CONFIG <<'ENDOFTAIL';
+print CONFIG_POD <<'ENDOFTAIL';
=back
close(CONFIG);
close(GLOS);
+close(CONFIG_POD);
# Now create Cross.pm if needed
-if ($opts{cross}) {
+if ($Opts{cross}) {
open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!";
my $cross = <<'EOS';
# typical invocation:
1;
EOS
- $cross =~ s/\*\*\*replace-marker\*\*\*/$opts{cross}/g;
+ $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g;
print CROSS $cross;
close CROSS;
}
-
# Now do some simple tests on the Config.pm file we have created
unshift(@INC,'lib');
-require $config_pm;
+require $Config_PM;
import Config;
-die "$0: $config_pm not valid"
+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{'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"}'
;
projects / p5sagit/p5-mst-13.2.git / commitdiff