+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
+
+my $osname = fetch_string({}, 'osname');
+my $from = $osname eq 'VMS' ? 'PERLSHR image' : 'binary (from libperl)';
+my $env_cygwin = $osname eq 'cygwin'
+ ? 'push @env, "CYGWIN=\"$ENV{CYGWIN}\"" if $ENV{CYGWIN};' . "\n" : "";
+
+$heavy_txt .= sprintf <<'ENDOFBEG', $osname, $osname, $from, $osname, $env_cygwin;
+# This file was created by configpm when Perl was built. Any changes
+# made to this file will be lost the next time perl is built.
+
+package Config;
+use strict;
+use warnings;
+use vars '%%Config';
+
+sub bincompat_options {
+ return split ' ', (Internals::V())[0];
+}
+
+sub non_bincompat_options {
+ return split ' ', (Internals::V())[1];
+}
+
+sub compile_date {
+ return (Internals::V())[2]
+}
+
+sub local_patches {
+ my (undef, undef, undef, @patches) = Internals::V();
+ return @patches;
+}
+
+sub _V {
+ die "Perl lib was built for '%s' but is being run on '$^O'"
+ unless "%s" eq $^O;
+
+ my ($bincompat, $non_bincompat, $date, @patches) = Internals::V();
+
+ my $opts = join ' ', sort split ' ', "$bincompat $non_bincompat";
+
+ # wrap at 76 columns.
+
+ $opts =~ s/(?=.{53})(.{1,53}) /$1\n /mg;
+
+ print Config::myconfig();
+ print "\nCharacteristics of this %s: \n";
+
+ print " Compile-time options: $opts\n";
+
+ if (@patches) {
+ print " Locally applied patches:\n";
+ print "\t$_\n" foreach @patches;
+ }
+
+ print " Built under %s\n";
+
+ print " $date\n" if defined $date;
+
+ my @env = map { "$_=\"$ENV{$_}\"" } sort grep {/^PERL/} keys %%ENV;
+%s
+ if (@env) {
+ print " \%%ENV:\n";
+ print " $_\n" foreach @env;
+ }
+ print " \@INC:\n";
+ print " $_\n" foreach @INC;
+}
+
+sub header_files {
+ENDOFBEG
+
+$heavy_txt .= $header_files . "\n}\n\n";
+
+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";