X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/54310121b442974721115f93666234a200f5c7e4..e670910b0c400b157be823734ec6e961eafe0d4a:/configpm?ds=sidebyside diff --git a/configpm b/configpm index fcf4e3d..cb6122c 100755 --- a/configpm +++ b/configpm @@ -1,189 +1,724 @@ #!./miniperl -w +# +# configpm +# +# Copyright (C) 1994, 1995, 1996 1997, 1998, 1999, 2000, 2001, +# 2002, 2003, 2004, 2005, 2006 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 +# +# 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 <; + chomp; + /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'"; + $Common{$1} = $1; +} -$config_pm = $ARGV[0] || 'lib/Config.pm'; -@ARGV = "./config.sh"; - -# list names to put first (and hence lookup fastest) -@fast = qw(archname osname osvers prefix libs libpth - dynamic_ext static_ext extensions dlsrc so - sig_name sig_num cc ccflags cppflags - privlibexp archlibexp installprivlib installarchlib - sharpbang startsh shsharp +# names of things which may need to have slashes changed to double-colons +my %Extensions = map {($_,$_)} + qw(dynamic_ext static_ext extensions known_extensions); + +# allowed opts as well as specifies default and initial values +my %Allowed_Opts = ( + 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM + 'glossary' => 1, # --no-glossary - no glossary file inclusion, + # for compactness + 'heavy' => '', # pathname of the Config_heavy.pl file ); -# names of things which may need to have slashes changed to double-colons -@extensions = qw(dynamic_ext static_ext extensions known_extensions); +sub opts { + # user specified options + my %given_opts = ( + # --opt=smth + (map {/^--([\-_\w]+)=(.*)$/} @ARGV), + # --opt --no-opt --noopt + (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV), + ); + my %opts = (%Allowed_Opts, %given_opts); -open CONFIG, ">$config_pm" or die "Can't open $config_pm: $!\n"; -$myver = $]; + for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) { + warn "option '$opt' is not recognized"; + usage; + } + @ARGV = grep {!/^--/} @ARGV; + + return %opts; +} + + +my %Opts = opts(); + +my ($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; +} + +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. -print CONFIG <<"ENDOFBEG"; package Config; -use Exporter (); -\@ISA = (Exporter); -\@EXPORT = qw(%Config); -\@EXPORT_OK = qw(myconfig config_sh config_vars); +use strict; +# use warnings; Pulls in Carp +# use vars pulls in Carp +ENDOFBEG -\$] == $myver - or die "Perl lib version ($myver) doesn't match executable version (\$])"; +my $myver = sprintf "%vd", $^V; +$config_txt .= sprintf <<'ENDOFBEG', ($myver) x 3; # This file was created by configpm when Perl was built. Any changes # made to this file will be lost the next time perl is built. +package Config; +use strict; +# use warnings; Pulls in Carp +# use vars pulls in Carp +@Config::EXPORT = qw(%%Config); +@Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re); + +# Need to stub all the functions to make code such as print Config::config_sh +# keep working + +sub myconfig; +sub config_sh; +sub config_vars; +sub config_re; + +my %%Export_Cache = map {($_ => 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",$^V) . ")"; + ENDOFBEG -@fast{@fast} = @fast; -@extensions{@extensions} = @extensions; -@non_v=(); -@v_fast=(); -@v_others=(); -$in_v = 0; +my @non_v = (); +my @v_others = (); +my $in_v = 0; +my %Data = (); + -while (<>) { +my %seen_quotes; +{ + my ($name, $val); + open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!"; + while () { next if m:^#!/bin/sh:; - # Catch CONFIG=true and PATCHLEVEL=n line from Configure. - s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/; - unless ($in_v or m/^(\w+)='(.*\n)/){ + + # 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; } - if ($in_v) { $val .= $_; } - else { ($name,$val) = ($1,$2); } - $in_v = $val !~ /'\n/; + my $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{$name}){ push(@v_others, "$name='$val"); next; } - push(@v_fast,"$name='$val"); + + 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; } -foreach(@non_v){ print CONFIG $_ } +# 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} -print CONFIG "\n", - "my \$config_sh = <<'!END!';\n", - join("", @v_fast, sort @v_others), - "!END!\n\n"; +my $fetch_string = <<'EOT'; -# copy config summary format from the myconfig script +# Search for it in the big string +sub fetch_string { + my($self, $key) = @_; -print CONFIG "my \$summary = <<'!END!';\n"; +EOT -open(MYCONFIG,"{$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) { + $config_txt .= $relocation_code; + } else { + $heavy_txt .= $relocation_code; + } +} + +$heavy_txt .= join('', @non_v) . "\n"; + +# copy config summary format from the myconfig.SH script +$heavy_txt .= "our \$summary = <<'!END!';\n"; +open(MYCONFIG,") && !/^Summary of/; -do { print CONFIG $_ } until !defined($_ = ) || /^\s*$/; +do { $heavy_txt .= $_ } until !defined($_ = ) || /^\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; - $summary =~ s/\$(\w+)/$Config{$1}/ge; - $summary_expanded = 1; - $summary; + 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 -# ---- +$heavy_txt .= join('', sort @v_others) . "!END!\n"; -print CONFIG <<'ENDOFEND'; +# Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of +# the precached keys +if ($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 . $2}me; +EOT +} +} + +$heavy_txt .= <<'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//; + $heavy_txt .= "${prefix}_nolargefiles='$value'\n"; + } +} + +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='$value'\n"; +} + +$heavy_txt .= "EOVIRTUAL\n"; + +$heavy_txt .= $fetch_string; + +$config_txt .= <<'ENDOFEND'; + +sub FETCH { + my($self, $key) = @_; -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); - $marker = "$_[1]='"; - # return undef unless (($value) = $config_sh =~ m/^$_[1]='(.*)'\s*$/m); - $start = index($config_sh, "\n$marker"); - return undef if ( ($start == -1) && # in case it's first - (substr($config_sh, 0, length($marker)) ne $marker) ); - if ($start == -1) { $start = length($marker) } - else { $start += length($marker) + 1 } - $value = substr($config_sh, $start, - index($config_sh, qq('\n), $start) - $start); - - $value = undef if $value eq 'undef'; # So we can say "if $Config{'foo'}". - $_[0]->{$_[1]} = $value; # cache it - return $value; -} - + return $self->{$key} if exists $self->{$key}; + + return $self->fetch_string($key); +} +ENDOFEND + +$heavy_txt .= <<'ENDOFEND'; + my $prevpos = 0; sub FIRSTKEY { $prevpos = 0; - # my($key) = $config_sh =~ m/^(.*?)=/; - substr($config_sh, 0, index($config_sh, '=') ); - # $key; + substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 ); } sub NEXTKEY { - my $pos = index($config_sh, qq('\n), $prevpos) + 2; - my $len = index($config_sh, "=", $pos) - $pos; +ENDOFEND +if ($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_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, $len) : undef; } -sub EXISTS { - # exists($_[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 "$_[1]='"; +sub EXISTS { + return 1 if exists($_[0]->{$_[1]}); + + return(index($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 STORE { die "\%Config::Config is read-only\n" } -sub DELETE { &STORE } -sub CLEAR { &STORE } +*DELETE = \&STORE; +*CLEAR = \&STORE; sub config_sh { - $config_sh + substr $Config_SH_expanded, 1, $config_sh_len; } sub config_re { my $re = shift; - my @matches = ($config_sh =~ /^$re=.*\n/mg); - @matches ? (print @matches) : print "$re: not found\n"; + return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/, + $Config_SH_expanded; } sub config_vars { - foreach(@_){ - config_re($_), next if /\W/; - my $v=(exists $Config{$_}) ? $Config{$_} : 'UNKNOWN'; - $v='undef' unless defined $v; - print "$_='$v';\n"; + # implements -V:cfgvar option (see perlrun -V:) + foreach (@_) { + # find optional leading, trailing colons; and query-spec + my ($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'; + $config_txt .= <<'ENDOFSET'; my %preconfig; if ($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 : $v; } } +$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 = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/; + } + } + $config_txt .= < ? + 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 { " $_,\n" } sort values %Common; -tie %Config, 'Config'; +# Sanity check needed to stop an infite loop if Config_heavy.pl fails to define +# &launcher for some reason (eg it got truncated) +$config_txt .= sprintf <<'ENDOFTIE', $fast_config; -1; -__END__ +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: $!"; +print CONFIG_POD <<'ENDOFTAIL'; =head1 NAME Config - access Perl configuration information @@ -191,16 +726,18 @@ Config - access Perl configuration information =head1 SYNOPSIS use Config; - if ($Config{'cc'} =~ /gcc/) { - print "built by gcc\n"; + if ($Config{usethreads}) { + print "has thread support\n" } - use Config qw(myconfig config_sh config_vars); + use Config qw(myconfig config_sh config_vars config_re); print myconfig(); print config_sh(); + print config_re(); + config_vars(qw(osname archname)); @@ -228,6 +765,11 @@ See also C<-V> in L. Returns the entire perl configuration information in the form of the original config.sh shell variable assignment script. +=item config_re($regex) + +Like config_sh() but returns, as a list, only the config entries who's +names match the $regex. + =item config_vars(@names) Prints to STDOUT the values of the named configuration variable. Each is @@ -274,6 +816,95 @@ The Config module is installed into the architecture and version specific library directory ($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 variables are determined by the C script +on platforms supported by it (which is most UNIX platforms). Some +platforms have custom-made C 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 < new paragraph + s/^(? 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{ + (?)xg; # /usr/local + s/((?<=\s)~\w*)/F<$1>/g; # ~name + s/(?/g; # UNISTD + s/(? macro/g; # FILE_cnt macro + s/n[\0]t/n't/g; # undo can't, won't damage +} + +if ($Opts{glossary}) { + ; # Skip the "DO NOT EDIT" + ; # Skip the preamble + while () { + 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 @@ -284,25 +915,182 @@ outside of it. ENDOFTAIL -close(CONFIG); +close(GLOS) if $Opts{glossary}; +close(CONFIG_POD); +print "written lib/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}) { + 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 $cross; + close CROSS; + print "written lib/Cross.pm\n"; + unshift(@INC,"xlib/$Opts{cross}"); +} # Now do some simple tests on the Config.pm file we have created unshift(@INC,'lib'); -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