diff options
Diffstat (limited to 'contrib/perl5/configpm')
-rwxr-xr-x | contrib/perl5/configpm | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/contrib/perl5/configpm b/contrib/perl5/configpm deleted file mode 100755 index 656e379..0000000 --- a/contrib/perl5/configpm +++ /dev/null @@ -1,491 +0,0 @@ -#!./miniperl -w -# $FreeBSD$ - -my $config_pm = $ARGV[0] || 'lib/Config.pm'; -my $glossary = $ARGV[1] || 'Porting/Glossary'; -@ARGV = "./config.sh"; - -# list names to put first (and hence lookup fastest) -@fast = qw(archname osname osvers prefix libs libpth - dynamic_ext static_ext extensions dlsrc so - sig_name sig_num cc ccflags cppflags - privlibexp archlibexp installprivlib installarchlib - sharpbang startsh shsharp -); - -# names of things which may need to have slashes changed to double-colons -@extensions = qw(dynamic_ext static_ext extensions known_extensions); - - -open CONFIG, ">$config_pm" or die "Can't open $config_pm: $!\n"; -$myver = "v5.6.1"; # XXX - Yuck - allow bootstrapping. MarkM - -print CONFIG <<'ENDOFBEG_NOQ', <<"ENDOFBEG"; -package Config; -use Exporter (); -@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'} @_; - local $Exporter::ExportLevel = 1; - Exporter::import('Config', @func) if @func; - return if @func == @_; - my $callpkg = caller(0); - *{"$callpkg\::Config"} = \%Config; -} - -ENDOFBEG_NOQ -die "Perl lib version ($myver) 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. - -ENDOFBEG - - -@fast{@fast} = @fast; -@extensions{@extensions} = @extensions; -@non_v=(); -@v_fast=(); -@v_others=(); -$in_v = 0; - -while (<>) { - next if m:^#!/bin/sh:; - # Catch CONFIGDOTSH=true and PERL_VERSION=n line from Configure. - s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/; - my ($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 ($k eq 'CONFIGDOTSH') { - push @v_others, "CONFIG='$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); } - $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 $_ } - -print CONFIG "\n", - "my \$config_sh = <<'!END!';\n", - join("", @v_fast, sort @v_others), - "!END!\n\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*$/; -close(MYCONFIG); - -print CONFIG "\n!END!\n", <<'EOT'; -my $summary_expanded = 0; - -sub myconfig { - return $summary if $summary_expanded; - $summary =~ s{\$(\w+)} - { my $c = $Config{$1}; defined($c) ? $c : 'undef' }ge; - $summary_expanded = 1; - $summary; -} -EOT - -# ---- - -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/) { - # These are purely virtual, they do not exist, but need to - # be computed on demand for largefile-incapable extensions. - my $key = "${1}_uselargefiles"; - $value = $Config{$1}; - my $withlargefiles = $Config{$key}; - if ($key =~ /^(?:cc|ld)flags_/) { - $value =~ s/\Q$withlargefiles\E\b//; - } elsif ($key =~ /^libs/) { - my @lflibswanted = split(' ', $Config{libswanted_uselargefiles}); - if (@lflibswanted) { - my %lflibswanted; - @lflibswanted{@lflibswanted} = (); - if ($key =~ /^libs_/) { - my @libs = grep { /^-l(.+)/ && - not exists $lflibswanted{$1} } - split(' ', $Config{libs}); - $Config{libs} = join(' ', @libs); - } elsif ($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; -} - -my $prevpos = 0; - -sub FIRSTKEY { - $prevpos = 0; - # my($key) = $config_sh =~ m/^(.*?)=/; - substr($config_sh, 0, index($config_sh, '=') ); - # $key; -} - -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; - $prevpos = $pos; - $len > 0 ? substr($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 - $_[1] =~ /^(?:(?:cc|ld)flags|libs(?:wanted)?)_nolargefiles$/; -} - -sub STORE { die "\%Config::Config is read-only\n" } -sub DELETE { &STORE } -sub CLEAR { &STORE } - - -sub config_sh { - $config_sh -} - -sub config_re { - my $re = shift; - my @matches = ($config_sh =~ /^$re=.*\n/mg); - @matches ? (print @matches) : print "$re: not found\n"; -} - -sub config_vars { - foreach(@_){ - config_re($_), next if /\W/; - my $v=(exists $Config{$_}) ? $Config{$_} : 'UNKNOWN'; - $v='undef' unless defined $v; - print "$_='$v';\n"; - } -} - -ENDOFEND - -if ($^O eq 'os2') { - print CONFIG <<'ENDOFSET'; -my %preconfig; -if ($OS2::is_aout) { - my ($value, $v) = $config_sh =~ m/^used_aout='(.*)'\s*$/m; - for (split ' ', $value) { - ($v) = $config_sh =~ m/^aout_$_='(.*)'\s*$/m; - $preconfig{$_} = $v eq 'undef' ? undef : $v; - } -} -sub TIEHASH { bless {%preconfig} } -ENDOFSET -} else { - print CONFIG <<'ENDOFSET'; -sub TIEHASH { bless {} } -ENDOFSET -} - -print CONFIG <<'ENDOFTAIL'; - -# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD -sub DESTROY { } - -tie %Config, 'Config'; - -1; -__END__ - -=head1 NAME - -Config - access Perl configuration information - -=head1 SYNOPSIS - - use Config; - if ($Config{'cc'} =~ /gcc/) { - print "built by gcc\n"; - } - - use Config qw(myconfig config_sh config_vars); - - print myconfig(); - - print config_sh(); - - 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_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 - -open(GLOS, "<$glossary") or die "Can't open $glossary: $!"; -%seen = (); -$text = 0; -$/ = ''; - -sub process { - 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; -=back - -EOF - print CONFIG <<EOF; -=head2 $c - -=over - -EOF - $text = 1; - } - s/n't/n\00t/g; # leave can't, won't etc untouched - s/^\t\s+(.*)/\n\t$1\n/gm; # Indented lines ===> paragraphs - 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 - ( [\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 -} - -<GLOS>; # Skip the preamble -while (<GLOS>) { - process; - print CONFIG; -} - -print CONFIG <<'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); -close(GLOS); - -# Now do some simple tests on the Config.pm file we have created -unshift(@INC,'lib'); -require $config_pm; -import Config; - -die "$0: $config_pm not valid" - unless $Config{'CONFIGDOTSH'} eq 'true'; - -die "$0: error processing $config_pm" - if defined($Config{'an impossible name'}) - or $Config{'CONFIGDOTSH'} ne 'true' # test cache - ; - -die "$0: error processing $config_pm" - if eval '$Config{"cc"} = 1' - or eval 'delete $Config{"cc"}' - ; - - -exit 0; |