5 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
6 # 2002, 2003, 2004, 2005, 2006, 2007 Larry Wall and others.
14 # lib/Cross.pm (optionally)
17 # from the contents of the static files
22 # and from the contents of the Configure-generated file
26 # Note that output directory is xlib/[cross-name]/ for cross-compiling
28 # It will only update Config.pm and Config_heavy.pl if the contents of
29 # either file would be different. Note that *both* files are updated in
30 # this case, since for example an extension makefile that has a dependency
31 # on Config.pm should trigger even if only Config_heavy.pl has changed.
33 sub usage { die <<EOF }
35 --cross=PLATFORM cross-compile for a different platform
36 --no-glossary don't include Porting/Glossary in lib/Config.pod
40 use vars qw(%Config $Config_SH_expanded);
42 my $how_many_common = 22;
44 # commonly used names to precache (and hence lookup fastest)
47 while ($how_many_common--) {
50 /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
54 # names of things which may need to have slashes changed to double-colons
55 my %Extensions = map {($_,$_)}
56 qw(dynamic_ext static_ext extensions known_extensions);
58 # allowed opts as well as specifies default and initial values
60 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM
61 'glossary' => 1, # --no-glossary - no glossary file inclusion,
66 # user specified options
69 (map {/^--([\-_\w]+)=(.*)$/} @ARGV),
70 # --opt --no-opt --noopt
71 (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV),
74 my %opts = (%Allowed_Opts, %given_opts);
76 for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) {
77 warn "option '$opt' is not recognized";
80 @ARGV = grep {!/^--/} @ARGV;
88 my ($Config_SH, $Config_PM, $Config_heavy, $Config_POD);
89 my $Glossary = 'Porting/Glossary';
92 # creating cross-platform config file
94 mkdir "xlib/$Opts{cross}";
95 $Config_PM = "xlib/$Opts{cross}/Config.pm";
96 $Config_POD = "xlib/$Opts{cross}/Config.pod";
97 $Config_SH = "Cross/config-$Opts{cross}.sh";
100 $Config_PM = "lib/Config.pm";
101 $Config_POD = "lib/Config.pod";
102 $Config_SH = "config.sh";
104 ($Config_heavy = $Config_PM) =~ s/\.pm$/_heavy.pl/;
105 die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'"
106 if $Config_heavy eq $Config_PM;
111 $heavy_txt .= <<'ENDOFBEG';
112 # This file was created by configpm when Perl was built. Any changes
113 # made to this file will be lost the next time perl is built.
117 # use warnings; Pulls in Carp
118 # use vars pulls in Carp
121 my $myver = sprintf "%vd", $^V;
123 $config_txt .= sprintf <<'ENDOFBEG', ($myver) x 3;
124 # This file was created by configpm when Perl was built. Any changes
125 # made to this file will be lost the next time perl is built.
129 # use warnings; Pulls in Carp
130 # use vars pulls in Carp
131 @Config::EXPORT = qw(%%Config);
132 @Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re);
134 # Need to stub all the functions to make code such as print Config::config_sh
142 my %%Export_Cache = map {($_ => 1)} (@Config::EXPORT, @Config::EXPORT_OK);
146 # Define our own import method to avoid pulling in the full Exporter:
149 @_ = @Config::EXPORT unless @_;
151 my @funcs = grep $_ ne '%%Config', @_;
152 my $export_Config = @funcs < @_ ? 1 : 0;
155 my $callpkg = caller(0);
156 foreach my $func (@funcs) {
157 die sprintf qq{"%%s" is not exported by the %%s module\n},
158 $func, __PACKAGE__ unless $Export_Cache{$func};
159 *{$callpkg.'::'.$func} = \&{$func};
162 *{"$callpkg\::Config"} = \%%Config if $export_Config;
166 die "Perl lib version (%s) doesn't match executable version ($])"
170 or die "Perl lib version (%s) doesn't match executable version (" .
171 sprintf("v%%vd",$^V) . ")";
185 open(CONFIG_SH, $Config_SH) || die "Can't open $Config_SH: $!";
186 while (<CONFIG_SH>) {
187 next if m:^#!/bin/sh:;
189 # Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
190 s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/;
191 my($k, $v) = ($1, $2);
193 # grandfather PATCHLEVEL and SUBVERSION and CONFIG
195 if ($k eq 'PERL_VERSION') {
196 push @v_others, "PATCHLEVEL='$v'\n";
198 elsif ($k eq 'PERL_SUBVERSION') {
199 push @v_others, "SUBVERSION='$v'\n";
201 elsif ($k eq 'PERL_CONFIG_SH') {
202 push @v_others, "CONFIG='$v'\n";
206 # We can delimit things in config.sh with either ' or ".
207 unless ($in_v or m/^(\w+)=(['"])(.*\n)/){
208 push(@non_v, "#$_"); # not a name='value' line
216 ($name,$val) = ($1,$3);
218 $in_v = $val !~ /$quote\n/;
221 s,/,::,g if $Extensions{$name};
223 $val =~ s/$quote\n?\z//;
225 my $line = "$name=$quote$val$quote\n";
226 push(@v_others, $line);
227 $seen_quotes{$quote}++;
232 # This is somewhat grim, but I want the code for parsing config.sh here and
233 # now so that I can expand $Config{ivsize} and $Config{ivtype}
235 my $fetch_string = <<'EOT';
237 # Search for it in the big string
239 my($self, $key) = @_;
243 if ($seen_quotes{'"'}) {
244 # We need the full ' and " code
245 $fetch_string .= <<'EOT';
246 my $quote_type = "'";
247 my $marker = "$key=";
249 # Check for the common case, ' delimited
250 my $start = index($Config_SH_expanded, "\n$marker$quote_type");
251 # If that failed, check for " delimited
254 $start = index($Config_SH_expanded, "\n$marker$quote_type");
258 $fetch_string .= <<'EOT';
259 # We only have ' delimted.
260 my $start = index($Config_SH_expanded, "\n$key=\'");
263 $fetch_string .= <<'EOT';
264 # Start can never be -1 now, as we've rigged the long string we're
265 # searching with an initial dummy newline.
266 return undef if $start == -1;
268 $start += length($key) + 3;
271 if (!$seen_quotes{'"'}) {
272 # Don't need the full ' and " code, or the eval expansion.
273 $fetch_string .= <<'EOT';
274 my $value = substr($Config_SH_expanded, $start,
275 index($Config_SH_expanded, "'\n", $start)
279 $fetch_string .= <<'EOT';
280 my $value = substr($Config_SH_expanded, $start,
281 index($Config_SH_expanded, "$quote_type\n", $start)
284 # If we had a double-quote, we'd better eval it so escape
285 # sequences and such can be interpolated. Since the incoming
286 # value is supposed to follow shell rules and not perl rules,
287 # we escape any perl variable markers
288 if ($quote_type eq '"') {
289 $value =~ s/\$/\\\$/g;
290 $value =~ s/\@/\\\@/g;
291 eval "\$value = \"$value\"";
295 $fetch_string .= <<'EOT';
296 # So we can say "if $Config{'foo'}".
297 $value = undef if $value eq 'undef';
298 $self->{$key} = $value; # cache it
305 # Calculation for the keys for byteorder
306 # This is somewhat grim, but I need to run fetch_string here.
307 our $Config_SH_expanded = join "\n", '', @v_others;
309 my $t = fetch_string ({}, 'ivtype');
310 my $s = fetch_string ({}, 'ivsize');
312 # byteorder does exist on its own but we overlay a virtual
313 # dynamically recomputed value.
315 # However, ivtype and ivsize will not vary for sane fat binaries
317 my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
320 if ($s == 4 || $s == 8) {
321 my $list = join ',', reverse(2..$s);
323 $byteorder_code = <<"EOT";
326 foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 }
328 our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
331 $byteorder_code = "our \$byteorder = '?'x$s;\n";
336 if (fetch_string({},'userelocatableinc')) {
337 foreach my $what (qw(prefixexp
386 installvendorhtml1dir
387 installvendorhtml3dir
393 push @need_relocation, $what if fetch_string({}, $what) =~ m!^\.\.\./!;
398 @need_relocation{@need_relocation} = @need_relocation;
400 # This can have .../ anywhere:
401 if (fetch_string({}, 'otherlibdirs') =~ m!\.\.\./!) {
402 $need_relocation{otherlibdirs} = 'otherlibdirs';
405 my $relocation_code = <<'EOT';
409 return $libdir unless $libdir =~ s!^\.\.\./!!;
411 if ($prefix =~ s!/[^/]*$!!) {
412 while ($libdir =~ m!^\.\./!) {
413 # Loop while $libdir starts "../" and $prefix still has a trailing
415 last unless $prefix =~ s!/([^/]+)$!!;
416 # but bail out if the directory we picked off the end of $prefix is .
418 if ($1 eq '.' or $1 eq '..') {
419 # Undo! This should be rare, hence code it this way rather than a
420 # check each time before the s!!! above.
421 $prefix = "$prefix/$1";
424 # Remove that leading ../ and loop again
425 substr ($libdir, 0, 3, '');
427 $libdir = "$prefix/$libdir";
433 if (%need_relocation) {
434 my $relocations_in_common;
435 # otherlibdirs only features in the hash
436 foreach (keys %need_relocation) {
437 $relocations_in_common++ if $Common{$_};
439 if ($relocations_in_common) {
440 $config_txt .= $relocation_code;
442 $heavy_txt .= $relocation_code;
446 $heavy_txt .= join('', @non_v) . "\n";
448 # copy config summary format from the myconfig.SH script
449 $heavy_txt .= "our \$summary = <<'!END!';\n";
450 open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!";
451 1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
452 do { $heavy_txt .= $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
455 $heavy_txt .= "\n!END!\n" . <<'EOT';
456 my $summary_expanded;
459 return $summary_expanded if $summary_expanded;
460 ($summary_expanded = $summary) =~ s{\$(\w+)}
461 { my $c = $Config::Config{$1}; defined($c) ? $c : 'undef' }ge;
469 $heavy_txt .= join('', sort @v_others) . "!END!\n";
471 # Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of
473 if ($Common{byteorder}) {
474 $config_txt .= $byteorder_code;
476 $heavy_txt .= $byteorder_code;
479 if (@need_relocation) {
480 $heavy_txt .= 'foreach my $what (qw(' . join (' ', @need_relocation) .
482 s/^($what=)(['"])(.*?)\2/$1 . $2 . relocate_inc($3) . $2/me;
485 # Currently it only makes sense to do the ... relocation on Unix, so there's
486 # no need to emulate the "which separator for this platform" logic in perl.c -
487 # ':' will always be applicable
488 if ($need_relocation{otherlibdirs}) {
489 $heavy_txt .= << 'EOT';
490 s{^(otherlibdirs=)(['"])(.*?)\2}
491 {$1 . $2 . join ':', map {relocate_inc($_)} split ':', $3 . $2}me;
496 $heavy_txt .= <<'EOT';
497 s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
499 my $config_sh_len = length $_;
501 our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL';
504 foreach my $prefix (qw(ccflags ldflags)) {
505 my $value = fetch_string ({}, $prefix);
506 my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles");
507 if (defined $withlargefiles) {
508 $value =~ s/\Q$withlargefiles\E\b//;
509 $heavy_txt .= "${prefix}_nolargefiles='$value'\n";
513 foreach my $prefix (qw(libs libswanted)) {
514 my $value = fetch_string ({}, $prefix);
515 my $withlf = fetch_string ({}, 'libswanted_uselargefiles');
516 next unless defined $withlf;
518 = split(' ', fetch_string ({}, 'libswanted_uselargefiles'));
521 @lflibswanted{@lflibswanted} = ();
522 if ($prefix eq 'libs') {
523 my @libs = grep { /^-l(.+)/ &&
524 not exists $lflibswanted{$1} }
525 split(' ', fetch_string ({}, 'libs'));
526 $value = join(' ', @libs);
528 my @libswanted = grep { not exists $lflibswanted{$_} }
529 split(' ', fetch_string ({}, 'libswanted'));
530 $value = join(' ', @libswanted);
533 $heavy_txt .= "${prefix}_nolargefiles='$value'\n";
536 $heavy_txt .= "EOVIRTUAL\n";
538 $heavy_txt .= $fetch_string;
540 $config_txt .= <<'ENDOFEND';
543 my($self, $key) = @_;
545 # check for cached value (which may be undef so we use exists not defined)
546 return $self->{$key} if exists $self->{$key};
548 return $self->fetch_string($key);
552 $heavy_txt .= <<'ENDOFEND';
558 substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 );
563 if ($seen_quotes{'"'}) {
564 $heavy_txt .= <<'ENDOFEND';
565 # Find out how the current key's quoted so we can skip to its end.
566 my $quote = substr($Config_SH_expanded,
567 index($Config_SH_expanded, "=", $prevpos)+1, 1);
568 my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2;
571 # Just ' quotes, so it's much easier.
572 $heavy_txt .= <<'ENDOFEND';
573 my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2;
576 $heavy_txt .= <<'ENDOFEND';
577 my $len = index($Config_SH_expanded, "=", $pos) - $pos;
579 $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef;
583 return 1 if exists($_[0]->{$_[1]});
585 return(index($Config_SH_expanded, "\n$_[1]='") != -1
587 if ($seen_quotes{'"'}) {
588 $heavy_txt .= <<'ENDOFEND';
589 or index($Config_SH_expanded, "\n$_[1]=\"") != -1
592 $heavy_txt .= <<'ENDOFEND';
596 sub STORE { die "\%Config::Config is read-only\n" }
602 substr $Config_SH_expanded, 1, $config_sh_len;
607 return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/,
612 # implements -V:cfgvar option (see perlrun -V:)
614 # find optional leading, trailing colons; and query-spec
615 my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft,
616 # map colon-flags to print decorations
617 my $prfx = $notag ? '': "$qry="; # tag-prefix for print
618 my $lnend = $lncont ? ' ' : ";\n"; # line ending for print
620 # all config-vars are by definition \w only, any \W means regex
622 my @matches = config_re($qry);
623 print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag;
624 print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag;
626 my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry}
628 $v = 'undef' unless defined $v;
629 print "${prfx}'${v}'$lnend";
634 # Called by the real AUTOLOAD
637 goto \&$Config::AUTOLOAD;
644 $config_txt .= <<'ENDOFSET';
647 my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m;
648 for (split ' ', $value) {
649 ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m;
650 $preconfig{$_} = $v eq 'undef' ? undef : $v;
653 $preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't
654 sub TIEHASH { bless {%preconfig} }
656 # Extract the name of the DLL from the makefile to avoid duplication
657 my ($f) = grep -r, qw(GNUMakefile Makefile);
659 if (open my $fh, '<', $f) {
661 $dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/;
664 $config_txt .= <<ENDOFSET if $dll;
665 \$preconfig{dll_name} = '$dll';
668 $config_txt .= <<'ENDOFSET';
675 foreach my $key (keys %Common) {
676 my $value = fetch_string ({}, $key);
677 # Is it safe on the LHS of => ?
678 my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'";
679 if (defined $value) {
680 # Quote things for a '' string
681 $value =~ s!\\!\\\\!g;
684 if ($key eq 'otherlibdirs') {
685 $value = "join (':', map {relocate_inc(\$_)} split (':', $value))";
686 } elsif ($need_relocation{$key}) {
687 $value = "relocate_inc($value)";
692 $Common{$key} = "$qkey => $value";
695 if ($Common{byteorder}) {
696 $Common{byteorder} = 'byteorder => $byteorder';
698 my $fast_config = join '', map { " $_,\n" } sort values %Common;
700 # Sanity check needed to stop an infite loop if Config_heavy.pl fails to define
701 # &launcher for some reason (eg it got truncated)
702 $config_txt .= sprintf <<'ENDOFTIE', $fast_config;
707 require 'Config_heavy.pl';
708 goto \&launcher unless $Config::AUTOLOAD =~ /launcher$/;
709 die "&Config::AUTOLOAD failed on $Config::AUTOLOAD";
712 # tie returns the object, so the value returned to require will be true.
713 tie %%Config, 'Config', {
718 open(CONFIG_POD, ">$Config_POD") or die "Can't open $Config_POD: $!";
719 print CONFIG_POD <<'ENDOFTAIL';
722 Config - access Perl configuration information
727 if ($Config{usethreads}) {
728 print "has thread support\n"
731 use Config qw(myconfig config_sh config_vars config_re);
739 config_vars(qw(osname archname));
744 The Config module contains all the information that was available to
745 the C<Configure> program at Perl build time (over 900 values).
747 Shell variables from the F<config.sh> file (written by Configure) are
748 stored in the readonly-variable C<%Config>, indexed by their names.
750 Values stored in config.sh as 'undef' are returned as undefined
751 values. The perl C<exists> function can be used to check if a
752 named variable exists.
758 Returns a textual summary of the major perl configuration values.
759 See also C<-V> in L<perlrun/Switches>.
763 Returns the entire perl configuration information in the form of the
764 original config.sh shell variable assignment script.
766 =item config_re($regex)
768 Like config_sh() but returns, as a list, only the config entries who's
769 names match the $regex.
771 =item config_vars(@names)
773 Prints to STDOUT the values of the named configuration variable. Each is
774 printed on a separate line in the form:
778 Names which are unknown are output as C<name='UNKNOWN';>.
779 See also C<-V:name> in L<perlrun/Switches>.
785 Here's a more sophisticated example of using %Config:
792 unless($Config{sig_name} && $Config{sig_num}) {
795 my @names = split ' ', $Config{sig_name};
796 @sig_num{@names} = split ' ', $Config{sig_num};
798 $sig_name[$sig_num{$_}] ||= $_;
802 print "signal #17 = $sig_name[17]\n";
803 if ($sig_num{ALRM}) {
804 print "SIGALRM is $sig_num{ALRM}\n";
809 Because this information is not stored within the perl executable
810 itself it is possible (but unlikely) that the information does not
811 relate to the actual perl binary which is being used to access it.
813 The Config module is installed into the architecture and version
814 specific library directory ($Config{installarchlib}) and it checks the
815 perl version number when loaded.
817 The values stored in config.sh may be either single-quoted or
818 double-quoted. Double-quoted strings are handy for those cases where you
819 need to include escape sequences in the strings. To avoid runtime variable
820 interpolation, any C<$> and C<@> characters are replaced by C<\$> and
821 C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$>
822 or C<\@> in double-quoted strings unless you're willing to deal with the
823 consequences. (The slashes will end up escaped and the C<$> or C<@> will
824 trigger variable interpolation)
828 Most C<Config> variables are determined by the C<Configure> script
829 on platforms supported by it (which is most UNIX platforms). Some
830 platforms have custom-made C<Config> variables, and may thus not have
831 some of the variables described below, or may have extraneous variables
832 specific to that particular port. See the port specific documentation
837 if ($Opts{glossary}) {
838 open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!";
845 if (s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m) {
846 my $c = substr $1, 0, 1;
847 unless ($seen{$c}++) {
848 print CONFIG_POD <<EOF if $text;
852 print CONFIG_POD <<EOF;
861 elsif (!$text || !/\A\t/) {
862 warn "Expected a Configure variable header",
863 ($text ? " or another paragraph of description" : () );
865 s/n't/n\00t/g; # leave can't, won't etc untouched
866 s/^\t\s+(.*)/\n$1/gm; # Indented lines ===> new paragraph
867 s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text
868 s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o'
869 s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command
870 s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s'
872 (?<! [\w./<\'\"] ) # Only standalone file names
873 (?! e \. g \. ) # Not e.g.
874 (?! \. \. \. ) # Not ...
876 (?! read/ ) # Not read/write
877 (?! etc\. ) # Not etc.
880 \$ ? # Allow leading $
881 [\w./]* [./] [\w./]* # Require . or / inside
883 (?<! \. (?= [\s)] ) ) # Do not include trailing dot
884 (?! [\w/] ) # Include all of it
886 (F<$1>)xg; # /usr/local
887 s/((?<=\s)~\w*)/F<$1>/g; # ~name
888 s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD
889 s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro
890 s/n[\0]t/n't/g; # undo can't, won't damage
893 if ($Opts{glossary}) {
894 <GLOS>; # Skip the "DO NOT EDIT"
895 <GLOS>; # Skip the preamble
902 print CONFIG_POD <<'ENDOFTAIL';
908 This module contains a good example of how to use tie to implement a
909 cache and an example of how to make a tied variable readonly to those
916 close(GLOS) if $Opts{glossary};
918 print "written $Config_POD\n";
920 my $orig_config_txt = "";
921 my $orig_heavy_txt = "";
925 $orig_config_txt = <$fh> if open $fh, "<", $Config_PM;
926 $orig_heavy_txt = <$fh> if open $fh, "<", $Config_heavy;
929 if ($orig_config_txt ne $config_txt or $orig_heavy_txt ne $heavy_txt) {
930 open CONFIG, ">", $Config_PM or die "Can't open $Config_PM: $!\n";
931 open CONFIG_HEAVY, ">", $Config_heavy or die "Can't open $Config_heavy: $!\n";
932 print CONFIG $config_txt;
933 print CONFIG_HEAVY $heavy_txt;
936 print "updated $Config_PM\n";
937 print "updated $Config_heavy\n";
941 # Now create Cross.pm if needed
943 open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!";
945 # typical invocation:
946 # perl -MCross Makefile.PL
947 # perl -MCross=wince -V:cc
951 my ($package,$platform) = @_;
952 unless (defined $platform) {
953 # if $platform is not specified, then use last one when
954 # 'configpm; was invoked with --cross option
955 $platform = '***replace-marker***';
957 @INC = map {/\blib\b/?(do{local $_=$_;s/\blib\b/xlib\/$platform/;$_},$_):($_)} @INC;
958 $::Cross::platform = $platform;
963 $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g;
966 print "written lib/Cross.pm\n";
967 unshift(@INC,"xlib/$Opts{cross}");
970 # Now do some simple tests on the Config.pm file we have created
972 unshift(@INC,'xlib/symbian') if $Opts{cross};
974 require $Config_heavy;
977 die "$0: $Config_PM not valid"
978 unless $Config{'PERL_CONFIG_SH'} eq 'true';
980 die "$0: error processing $Config_PM"
981 if defined($Config{'an impossible name'})
982 or $Config{'PERL_CONFIG_SH'} ne 'true' # test cache
985 die "$0: error processing $Config_PM"
986 if eval '$Config{"cc"} = 1'
987 or eval 'delete $Config{"cc"}'
992 # Popularity of various entries in %Config, based on a large build and test
993 # run of code in the Fotango build system:
1011 inc_version_list: 783
1014 usevendorprefix: 642
1035 installsiteman1dir: 489
1036 installsiteman3dir: 489
1037 installvendorman1dir: 489
1038 installvendorman3dir: 489
1042 installsitearch: 344
1047 installprefixexp: 336
1050 installvendorarch: 336
1051 installvendorbin: 336
1052 installvendorlib: 336