diff perl-5.22.2/installperl @ 8045:a16537d2fe07

<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author HackBot
date Sat, 14 May 2016 14:54:38 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/perl-5.22.2/installperl	Sat May 14 14:54:38 2016 +0000
@@ -0,0 +1,812 @@
+#!./perl -w
+
+BEGIN {
+    chdir '..' if !-d 'lib' and -d '../lib';
+    @INC = 'lib';
+    $ENV{PERL5LIB} = 'lib';
+
+    # This needs to be at BEGIN time, before any use of Config
+    # install_lib itself loads and imports Config into main::
+    require './install_lib.pl';
+}
+
+use strict;
+use vars qw($Is_VMS $Is_W32 $Is_OS2 $Is_Cygwin $Is_Darwin $Is_NetWare
+	    %opts $packlist);
+my $versiononly;
+
+BEGIN {
+    if ($Is_VMS) { eval 'use VMS::Filespec;' }
+}
+
+my $scr_ext = ($Is_VMS ? '.Com' : $Is_W32 ? '.bat' : '');
+
+use File::Find;
+use File::Compare;
+use File::Copy ();
+use ExtUtils::Packlist;
+use Cwd;
+# nogetopt_compat to disable treating +v as meaning -v
+use Getopt::Long qw(:config nogetopt_compat no_auto_abbrev noignorecase);
+
+require './Porting/pod_lib.pl';
+
+if ($Is_NetWare) {
+    $Is_W32 = 0;
+    $scr_ext = '.pl';
+}
+
+my $mainperldir = "/usr/bin";
+my $exe_ext = $Config{exe_ext};
+
+# Allow "make install PERLNAME=something_besides_perl":
+my $perl = defined($ENV{PERLNAME}) ? $ENV{PERLNAME} : 'perl';
+
+# This is the base used for versioned names, like "perl5.6.0".
+# It's separate because a common use of $PERLNAME is to install
+# perl as "perl5", if that's used as base for versioned files you
+# get "perl55.6.0".
+my $perl_verbase = defined($ENV{PERLNAME_VERBASE})
+		    ? $ENV{PERLNAME_VERBASE}
+		    : $perl;
+my $dbg = '';
+my $ndbg = '';
+if ( $Is_VMS ) {
+    if ( defined $Config{usevmsdebug} ) {
+        if ( $Config{usevmsdebug} eq 'define' ) {
+            $dbg = 'dbg';
+            $ndbg = 'ndbg';
+        }
+    }
+}
+
+# This little hack simplifies making the code after the comment "Fetch some
+# frequently-used items from %Config" warning free. With $opts{destdir} always
+# defined, it's also possible to make the s/\Q$opts{destdir}\E unconditional.
+
+$opts{destdir} = '';
+{
+    my $usage = 0;
+    if (!GetOptions(\%opts, 'notify|n', 'strip|s', 'silent|S',
+                    'skip-otherperls|o', 'force|f', 'verbose|V', 'archname|A',
+                    'netware', 'nopods|p', 'destdir:s', 'help|h|?',
+                    'versiononly|v' => \$versiononly, '<>' => sub {
+                        if ($_[0] eq '+v') {
+                            $versiononly = 0;
+                        } else {
+                            # Any other unknown argument is going to be an error
+                            $usage = 1;
+                        }
+                    },
+                   )) {
+        $usage = 1;
+    }
+    $opts{verbose} ||= $opts{notify};
+
+    if ($usage || $opts{help}) {
+        print <<"EOT";
+Usage $0: [switches]
+  -n	    Don't actually run any commands; just print them.
+  -s        Run strip on installed binaries.
+  -v        Only install perl as a binary with the version number in the name.
+            (Override whatever config.sh says)
+  +v        Install perl as "perl" and as a binary with the version number in
+            the name.  (Override whatever config.sh says)
+  -S        Silent mode.
+  -f        Force installation (don't check if same version is there)
+  -o        Skip checking for other copies of perl in your PATH.
+  -V        Verbose mode.
+  -A        Also install perl with the architecture's name in the perl binary's
+            name.
+  -p        Don't install the pod files. [This will break use diagnostics;]
+  -netware  Install correctly on a Netware server.
+  -destdir  Prefix installation directories by this string.
+  -h        Display this help message.
+EOT
+        exit $usage;
+    }
+}
+
+$versiononly = 1 if $Config{versiononly} && !defined $versiononly;
+my (@scripts, @tolink);
+open SCRIPTS, "utils.lst" or die "Can't open utils.lst: $!";
+while (<SCRIPTS>) {
+    next if /^#/;
+    chomp;
+    if (/(\S*)\s*#\s*link\s*=\s*(\S*)/) {
+	push @scripts, $1;
+	push @tolink, [$1, $2];
+    } else {
+	push @scripts, $_;
+    }
+}
+close SCRIPTS;
+
+if ($scr_ext) { @scripts = map { "$_$scr_ext" } @scripts; }
+
+# Specify here any .pm files that are actually architecture-dependent.
+# (Those included with XS extensions under ext/ are automatically
+# added later.)
+# Now that the default privlib has the full perl version number included,
+# we no longer have to play the trick of sticking version-specific .pm
+# files under the archlib directory.
+my %archpms = (
+    Config => 1,
+    lib => 1,
+);
+
+if ($^O eq 'dos') {
+    push(@scripts,'djgpp/fixpmain');
+    $archpms{config} = $archpms{filehand} = 1;
+}
+
+if ((-e "testcompile") && (defined($ENV{'COMPILE'}))) {
+    push(@scripts, map("$_.exe", @scripts));
+}
+
+# Exclude nonxs extensions that are not architecture dependent
+my @nonxs = grep(!/^Errno$/, split(' ', $Config{'nonxs_ext'}));
+
+my @ext_dirs = qw(cpan dist ext);
+foreach my $ext_dir (@ext_dirs) {
+    find(sub {
+	if (($File::Find::name =~ m{^$ext_dir\b(.*)/([^/]+)\.pm$}) &&
+	    ! grep { (my $dir = $_) =~ s/\//-/g;
+		     $File::Find::name =~ /^$ext_dir\/$dir\// } @nonxs)
+	{
+	    my($path, $modname) = ($1,$2);
+
+	    # Change hyphenated name like Filter-Util-Call to nested
+	    # directory name Filter/Util/Call
+	    $path =~ s{-}{/}g;
+
+	    # strip to optional "/lib", or remove trailing component
+	    $path =~ s{.*/lib\b}{} or $path =~ s{/[^/]*$}{};
+
+	    # strip any leading /
+	    $path =~ s{^/}{};
+
+	    # reconstitute canonical module name
+	    $modname = "$path/$modname" if length $path;
+
+	    # remember it
+	    $archpms{$modname} = 1;
+	}
+    }, $ext_dir);
+}
+
+# print "[$_]\n" for sort keys %archpms;
+
+my $ver = $Config{version};
+my $release = substr($],0,3);   # Not used currently.
+my $patchlevel = substr($],3,2);
+die "Patchlevel of perl ($patchlevel)",
+    "and patchlevel of config.sh ($Config{'PERL_VERSION'}) don't match\n"
+	if $patchlevel != $Config{'PERL_VERSION'};
+
+# Fetch some frequently-used items from %Config
+my $installbin = "$opts{destdir}$Config{installbin}";
+my $installscript = "$opts{destdir}$Config{installscript}";
+my $installprivlib = "$opts{destdir}$Config{installprivlib}";
+my $installarchlib = "$opts{destdir}$Config{installarchlib}";
+my $installsitelib = "$opts{destdir}$Config{installsitelib}";
+my $installsitearch = "$opts{destdir}$Config{installsitearch}";
+my $installman1dir = "$opts{destdir}$Config{installman1dir}";
+my $man1ext = $Config{man1ext};
+my $libperl = $Config{libperl};
+# Shared library and dynamic loading suffixes.
+my $so = $Config{so};
+my $dlext = $Config{dlext};
+my $dlsrc = $Config{dlsrc};
+if ($^O eq 'os390') {
+    my $pwd;
+    chomp($pwd=`pwd`);
+    my $archlibexp = $Config{archlibexp};
+    my $usedl = $Config{usedl};
+    if ($usedl eq 'define') {
+	`./$^X -pibak -e 's{$pwd\/libperl.x}{$archlibexp/CORE/libperl.x}' lib/Config.pm`;
+    }
+}
+
+if ($opts{netware}) {
+    # This is required only if we are installing on a NetWare server
+    $installscript = $Config{installnwscripts};
+    $installprivlib = $Config{installnwlib};
+    $installarchlib = $Config{installnwlib};
+    $installsitelib = $Config{installnwlib};
+}
+
+my $binexp = $Config{binexp};
+
+if ($Is_VMS) {  # Hang in there until File::Spec hits the big time
+    foreach ( \$installbin,     \$installscript,  \$installprivlib,
+	      \$installarchlib, \$installsitelib, \$installsitearch,
+	      \$installman1dir ) {
+	$$_ = unixify($$_);  $$_ =~ s:/$::;
+    }
+}
+
+# Do some quick sanity checks.
+
+   $installbin		|| die "No installbin directory in config.sh\n";
+-d $installbin	        || mkpath($installbin);
+-d $installbin		|| $opts{notify} || die "$installbin is not a directory\n";
+-w $installbin		|| $opts{notify} || die "$installbin is not writable by you\n"
+	unless $installbin =~ m#^/afs/# || $opts{notify};
+
+if (!$Is_NetWare) {
+if (!$Is_VMS) {
+-x 'perl' . $exe_ext	|| die "perl isn't executable!\n";
+}
+else {
+-x $ndbg . 'perl' . $exe_ext	|| die "${ndbg}perl$exe_ext isn't executable!\n";
+    if ($dbg) {
+        -x $dbg . 'perl' . $exe_ext	|| die "${dbg}perl$exe_ext isn't executable!\n";
+    }
+}
+
+-f 't/rantests'		|| $Is_W32
+			|| warn "WARNING: You've never run 'make test' or",
+				" some tests failed! (Installing anyway.)\n";
+} #if (!$Is_NetWare)
+
+# This will be used to store the packlist
+$packlist = ExtUtils::Packlist->new("$installarchlib/.packlist");
+
+if (($Is_W32 and ! $Is_NetWare) or $Is_Cygwin) {
+    my $perldll;
+
+    if ($Is_Cygwin) {
+	$perldll = $libperl;
+    } else {
+	$perldll = 'perl5'.$Config{patchlevel}.'.'.$so;
+    }
+
+    if ($dlsrc ne "dl_none.xs") {
+	-f $perldll || die "No perl DLL built\n";
+    }
+
+    # Install the DLL
+    safe_unlink("$installbin/$perldll");
+    copy("$perldll", "$installbin/$perldll");
+    chmod(0755, "$installbin/$perldll");
+    $packlist->{"$Config{installbin}/$perldll"} = { type => 'file' };
+} # if (($Is_W32 and ! $Is_NetWare) or $Is_Cygwin)
+
+# First we install the version-numbered executables.
+
+if ($Is_VMS) {
+    safe_unlink("$installbin/perl_setup.com");
+    copy("perl_setup.com", "$installbin/perl_setup.com");
+    chmod(0755, "$installbin/perl_setup.com");
+    safe_unlink("$installbin/$dbg$perl$exe_ext");
+    copy("$dbg$perl$exe_ext", "$installbin/$dbg$perl$exe_ext");
+    chmod(0755, "$installbin/$dbg$perl$exe_ext");
+    safe_unlink("$installbin/$dbg${perl}shr$exe_ext");
+    copy("$dbg${perl}shr$exe_ext", "$installbin/$dbg${perl}shr$exe_ext");
+    chmod(0755, "$installbin/$dbg${perl}shr$exe_ext");
+    if ($ndbg) {
+        safe_unlink("$installbin/$ndbg$perl$exe_ext");
+        copy("$ndbg$perl$exe_ext", "$installbin/$ndbg$perl$exe_ext");
+        chmod(0755, "$installbin/$ndbg$perl$exe_ext");
+    }
+}
+elsif ($^O ne 'dos') {
+    if (!$Is_NetWare) {
+	safe_unlink("$installbin/$perl_verbase$ver$exe_ext");
+	copy("perl$exe_ext", "$installbin/$perl_verbase$ver$exe_ext");
+	strip("$installbin/$perl_verbase$ver$exe_ext");
+	chmod(0755, "$installbin/$perl_verbase$ver$exe_ext");
+    }
+    else {
+	# If installing onto a NetWare server
+        if ($opts{netware}) {
+	    # Copy perl.nlm, echo.nlm, type.nlm & cgi2perl.nlm
+            mkpath($Config{installnwsystem});
+	    copy("netware\\".$ENV{'MAKE_TYPE'}."\\perl.nlm", $Config{installnwsystem});
+	    copy("netware\\testnlm\\echo\\echo.nlm", $Config{installnwsystem});
+	    copy("netware\\testnlm\\type\\type.nlm", $Config{installnwsystem});
+	    chmod(0755, "$Config{installnwsystem}\\perl.nlm");
+            mkpath($Config{installnwlcgi});
+	    copy("lib\\auto\\cgi2perl\\cgi2perl.nlm", $Config{installnwlcgi});
+	}
+    } #if (!$Is_NetWare)
+}
+else {
+    safe_unlink("$installbin/$perl.exe");
+    copy("perl.exe", "$installbin/$perl.exe");
+}
+
+# Install library files.
+
+my $do_installarchlib = !samepath($installarchlib, 'lib');
+my $do_installprivlib = !samepath($installprivlib, 'lib');
+my $vershort = ($Is_Cygwin and !$Config{usedevel}) ? substr($ver,0,-2) : $ver;
+$do_installprivlib = 0 if $versiononly && !($installprivlib =~ m/\Q$vershort/);
+
+mkpath($installprivlib);
+mkpath($installarchlib);
+mkpath($installsitelib, $opts{verbose}, 0777) if ($installsitelib);
+mkpath($installsitearch, $opts{verbose}, 0777) if ($installsitearch);
+
+if (-d 'lib') {
+    find({no_chdir => 1, wanted => \&installlib}, 'lib')
+        if $do_installarchlib || $do_installprivlib;
+}
+else {
+    warn "Can't install lib files - 'lib/' does not exist";
+}
+
+# Install header files and libraries.
+mkpath("$installarchlib/CORE");
+my @corefiles;
+if ($Is_VMS) {  # We did core file selection during build
+    my $coredir = "lib/$Config{archname}/$ver/CORE";
+    $coredir =~ tr/./_/;
+    map { s|^$coredir/||i; } @corefiles = <$coredir/*.*>;
+}
+elsif ($Is_Cygwin) { # On Cygwin symlink it to CORE to make Makefile happy
+    @corefiles = <*.h libperl*.* perl*$Config{lib_ext}>;
+    my $coredll = "$installarchlib/CORE/$libperl";
+    my $instcoredll = "$Config{installarchlib}/CORE/$libperl";
+    safe_unlink($coredll);
+    ( $Config{'d_link'} eq 'define' &&
+      eval {
+          CORE::link("$installbin/$libperl", $coredll);
+          $packlist->{$instcoredll} = { from => "$Config{installbin}/$libperl",
+                                    type => 'link' };
+      }
+    ) ||
+    eval {
+        symlink("$installbin/$libperl", $coredll);
+        $packlist->{$instcoredll} = { from => "$Config{installbin}/$libperl",
+                                  type => 'link' };
+    } ||
+    ( copy("$installbin/$libperl", $coredll) &&
+      push(@corefiles, $instcoredll)
+    )
+} else {
+    # [als] hard-coded 'libperl' name... not good!
+    @corefiles = <*.h libperl*.* perl*$Config{lib_ext}>;
+
+    # AIX needs perl.exp installed as well.
+    push(@corefiles,'perl.exp') if $^O eq 'aix';
+}
+foreach my $file (@corefiles) {
+    # HP-UX (at least) needs to maintain execute permissions
+    # on dynamically-loadable libraries. So we do it for all.
+    if (copy_if_diff($file,"$installarchlib/CORE/$file")) {
+	if ($file =~ /\.(\Q$so\E|\Q$dlext\E)$/) {
+	    strip("-S", "$installarchlib/CORE/$file") if $^O eq 'darwin';
+	    chmod(0555, "$installarchlib/CORE/$file");
+	} else {
+	    chmod(0444, "$installarchlib/CORE/$file");
+	}
+    }
+}
+
+# Install main perl executables
+# Make links to ordinary names if installbin directory isn't current directory.
+
+if (! $versiononly && ! samepath($installbin, '.') && ($^O ne 'dos') && ! $Is_VMS && ! $Is_NetWare) {
+    safe_unlink("$installbin/$perl$exe_ext", "$installbin/suid$perl$exe_ext");
+    if ($^O eq 'vos') {
+	# VOS doesn't support hard links, so use a symlink.
+	symlink("$installbin/$perl_verbase$ver$exe_ext",
+		"$installbin/$perl$exe_ext");
+    } else {
+	link("$installbin/$perl_verbase$ver$exe_ext",
+		"$installbin/$perl$exe_ext");
+    }
+}
+
+# For development purposes it can be very useful to have multiple perls
+# build for different "architectures" (eg threading or not) simultaneously.
+if ($opts{archname} && ! samepath($installbin, '.') && ($^O ne 'dos') && ! $Is_VMS) {
+    my $archperl = "$perl_verbase$ver-$Config{archname}$exe_ext";
+    safe_unlink("$installbin/$archperl");
+    if ($^O eq 'vos') {
+	# VOS doesn't support hard links, so use a symlink.
+	symlink("$installbin/$perl_verbase$ver$exe_ext",
+		"$installbin/$archperl");
+    } else {
+	link("$installbin/$perl_verbase$ver$exe_ext", "$installbin/$archperl");
+    }
+}
+
+# Offer to install perl in a "standard" location
+
+my $mainperl_is_instperl = 0;
+
+if ($Config{installusrbinperl} && $Config{installusrbinperl} eq 'define' &&
+    !$versiononly && !$opts{notify} && !$Is_W32 && !$Is_NetWare && !$Is_VMS && -t STDIN && -t STDERR
+	&& -w $mainperldir && ! samepath($mainperldir, $installbin)) {
+    my($usrbinperl)	= "$mainperldir/$perl$exe_ext";
+    my($instperl)	= "$installbin/$perl$exe_ext";
+    my($expinstperl)	= "$binexp/$perl$exe_ext";
+
+    # First make sure $usrbinperl is not already the same as the perl we
+    # just installed.
+    if (-x $usrbinperl) {
+	# Try to be clever about mainperl being a symbolic link
+	# to binexp/perl if binexp and installbin are different.
+	$mainperl_is_instperl =
+	    samepath($usrbinperl, $instperl) ||
+	    samepath($usrbinperl, $expinstperl) ||
+	     (($binexp ne $installbin) &&
+	      (-l $usrbinperl) &&
+	      ((readlink $usrbinperl) eq $expinstperl));
+    }
+    if (! $mainperl_is_instperl) {
+	unlink($usrbinperl);
+	( $Config{'d_link'} eq 'define' &&
+	  eval { CORE::link $instperl, $usrbinperl } )	||
+	eval { symlink $expinstperl, $usrbinperl }	||
+	copy($instperl, $usrbinperl);
+
+	$mainperl_is_instperl = 1;
+    }
+}
+
+# cppstdin is just a script, but it is architecture-dependent, so
+# it can't safely be shared.  Place it in $installbin.
+# Note that Configure doesn't build cppstin if it isn't needed, so
+# we skip this if cppstdin doesn't exist.
+if (! $versiononly && (-f 'cppstdin') && (! samepath($installbin, '.'))) {
+    safe_unlink("$installbin/cppstdin");
+    copy("cppstdin", "$installbin/cppstdin");
+    chmod(0755, "$installbin/cppstdin");
+}
+
+sub script_alias {
+    my ($installscript, $orig, $alias, $scr_ext) = @_;
+
+    safe_unlink("$installscript/$alias$scr_ext");
+    if ($^O eq 'dos' or $Is_VMS or $^O eq 'transit') {
+	copy("$installscript/$orig$scr_ext",
+	     "$installscript/$alias$scr_ext");
+    } elsif ($^O eq 'vos') {
+	symlink("$installscript/$orig$scr_ext",
+		"$installscript/$alias$scr_ext");
+    } else {
+	link("$installscript/$orig$scr_ext",
+	     "$installscript/$alias$scr_ext");
+    }
+}
+
+# Install scripts.
+mkpath($installscript);
+if ($versiononly) {
+    for (@scripts) {
+	(my $base = $_) =~ s#.*/##;
+	$base .= $ver;
+	copy($_,    "$installscript/$base");
+	chmod(0755, "$installscript/$base");
+    }
+
+    for (@tolink) {
+	my ($from, $to) = map { "$_$ver" } @$_;
+	(my $frbase = $from) =~ s#.*/##;
+	(my $tobase = $to) =~ s#.*/##;
+	script_alias($installscript, $frbase, $tobase, $scr_ext);
+    }
+} else {
+    for (@scripts) {
+	(my $base = $_) =~ s#.*/##;
+	copy($_, "$installscript/$base");
+	chmod(0755, "$installscript/$base");
+    }
+
+    for (@tolink) {
+	my ($from, $to) = @$_;
+	(my $frbase = $from) =~ s#.*/##;
+	(my $tobase = $to) =~ s#.*/##;
+	script_alias($installscript, $frbase, $tobase, $scr_ext);
+    }
+}
+
+# Install pod pages.  Where? I guess in $installprivlib/pod
+# ($installprivlib/pods for cygwin).
+if (!$opts{nopods} && (!$versiononly || ($installprivlib =~ m/\Q$vershort/))) {
+    my $pod = ($Is_Cygwin || $Is_Darwin || $Is_VMS || $Is_W32) ? 'pods' : 'pod';
+    mkpath("${installprivlib}/$pod");
+
+    for (map {$_->[1]} @{get_pod_metadata()->{master}}) {
+	# $_ is a name like  pod/perl.pod
+	(my $base = $_) =~ s#.*/##;
+	copy_if_diff($_, "${installprivlib}/$pod/${base}");
+	chmod(0644, "${installprivlib}/$pod/${base}");
+    }
+
+}
+
+# Check to make sure there aren't other perls around in installer's
+# path.  This is probably UNIX-specific.  Check all absolute directories
+# in the path except for where public executables are supposed to live.
+# Also skip $mainperl if the user opted to have it be a link to the
+# installed perl.
+
+if (!$versiononly && !$opts{'skip-otherperls'}) {
+    my ($path, @path);
+    my $dirsep = ($Is_OS2 || $Is_W32 || $Is_NetWare) ? ';' : ':' ;
+    ($path = $ENV{"PATH"}) =~ s:\\:/:g ;
+    @path = split(/$dirsep/, $path);
+    if ($Is_VMS) {
+	my $i = 0;
+	while (exists $ENV{'DCL$PATH' . $i}) {
+	    my $dir = unixpath($ENV{'DCL$PATH' . $i});  $dir =~ s-/$--;
+	    push(@path,$dir);
+	}
+    }
+    my @otherperls;
+    my %otherperls;
+    for (@path) {
+	next unless m,^/,;
+	# Use &samepath here because some systems have other dirs linked
+	# to $mainperldir (like SunOS)
+	next unless -d;
+	next if samepath($_, $binexp);
+	next if samepath($_, cwd());
+	next if ($mainperl_is_instperl && samepath($_, $mainperldir));
+	my $otherperl = "$_/$perl$exe_ext";
+	next if $otherperls{$otherperl}++;
+	push(@otherperls, $otherperl)
+	    if (-x $otherperl && ! -d $otherperl);
+    }
+    if (@otherperls) {
+	warn "\nWarning: $perl appears in your path in the following " .
+	    "locations beyond where\nwe just installed it:\n";
+	for (@otherperls) {
+	    warn "    ", $_, "\n";
+	}
+	warn "\n";
+    }
+
+}
+
+$packlist->write() unless $opts{notify};
+print "  Installation complete\n" if $opts{verbose};
+
+exit 0;
+
+###############################################################################
+
+# If these are needed elsewhere, move them into install_lib.pl rather than
+# copying them.
+
+sub yn {
+    my($prompt) = @_;
+    my($answer);
+    my($default) = $prompt =~ m/\[([yn])\]\s*$/i;
+    print STDERR $prompt;
+    chop($answer = <STDIN>);
+    $answer = $default if $answer =~ m/^\s*$/;
+    ($answer =~ m/^[yY]/);
+}
+
+sub safe_unlink {
+    return if $opts{notify} or $Is_VMS;
+    my @names = @_;
+    foreach my $name (@names) {
+	next unless -e $name;
+	chmod 0777, $name if ($Is_OS2 || $Is_W32 || $Is_NetWare);
+	print "  unlink $name\n" if $opts{verbose};
+	next if CORE::unlink($name);
+	warn "Couldn't unlink $name: $!\n";
+	if ($! =~ /busy/i) {
+	    print "  mv $name $name.old\n" if $opts{verbose};
+	    safe_rename($name, "$name.old")
+		or warn "Couldn't rename $name: $!\n";
+	}
+    }
+}
+
+sub copy {
+    my($from,$to) = @_;
+
+    my $xto = $to;
+    $xto =~ s/^\Q$opts{destdir}\E//;
+    print $opts{verbose} ? "  cp $from $xto\n" : "  $xto\n"
+	unless $opts{silent};
+    print "  creating new version of $xto\n"
+	if $Is_VMS and -e $to and !$opts{silent};
+    unless ($opts{notify} or File::Copy::copy($from, $to)) {
+	# Might have been that F::C::c can't overwrite the target
+	warn "Couldn't copy $from to $to: $!\n"
+	    unless -f $to and (chmod(0666, $to), unlink $to)
+		   and File::Copy::copy($from, $to);
+    }
+    $packlist->{$xto} = { type => 'file' };
+}
+
+sub installlib {
+    my $dir = $File::Find::dir;
+    $dir =~ s!\Alib/?!!;
+
+    m!([^/]+)\z!;
+    my $name = $1;
+
+    # This remains ugly, and in need of refactoring.
+
+    # $name always starts as the leafname
+    # $dir is the directory *within* lib
+    # $name later has $dir pre-pended, to give the relative path in lib/
+    # which is used to create the path in the target directory.
+
+    # $_ was always the filename to use on disk. Adding no_chdir doesn't change
+    # this, as $_ becomes a pathname, and so still works. However, it's not
+    # obvious that $_ is needed later, and hence $_ must not be modified.
+
+    # Also, many of the regex exclusion tests below are now superfluous, as the
+    # files in question are either no longer in blead, or now in ext/, dist/ or
+    # cpan/ and not copied into lib/
+
+    # Ignore version control directories.
+    if ($name =~ /^(?:CVS|RCS|SCCS|\.svn)\z/ and -d $name) {
+	$File::Find::prune = 1;
+	return;
+    }
+
+    # ignore patch backups, RCS files, emacs backup & temp files and the
+    # .exists files, .PL files, and test files.
+    return if $name =~ m{\.orig$|\.rej$|~$|^#.+#$|,v$|^\.exists|\.PL$|\.plc$|\.t$|^test\.pl$|^dbm_filter_util\.pl$|^filter-util\.pl$|^uupacktool\.pl$|^\.gitignore$} ||
+	      $dir  =~ m{/t(?:/|$)};
+    # ignore the cpan script in lib/CPAN/bin, the instmodsh and xsubpp
+    # scripts in lib/ExtUtils, the prove script in lib/Test/Harness,
+    # the corelist script from lib/Module/CoreList/bin and ptar* in
+    # lib/Archive/Tar/bin and zipdetails in cpan/IO-Compress/bin
+    # (they're installed later with other utils)
+    return if $name =~ /^(?:cpan|instmodsh|prove|corelist|ptar|ptardiff|ptargrep|zipdetails)\z/;
+    # ignore the Makefiles
+    return if $name =~ /^makefile$/i;
+    # ignore the test extensions
+    return if $dir =~ m{\bXS/(?:APItest|Typemap)\b};
+    return if $name =~ m{\b(?:APItest|Typemap)\.pm$};
+    # ignore the build support code
+    return if $name =~ /\bbuildcustomize\.pl$/;
+    # ignore the demo files
+    return if $dir =~ /\b(?:demos?|eg)\b/;
+    # ignore unneeded unicore files
+    if ( $dir =~ /^unicore/ ) {
+      if ( $name =~ /\.txt\z/ ) {
+        # We can ignore most, but not all .txt files
+        return unless $name =~ /\A(?:Blocks|SpecialCasing|NamedSequences)\.txt\z/;
+      }
+      else {
+        # TestProp only needed during testing
+        return if $name =~ /\ATestProp.pl\z/;
+        # we need version and *.pl files and can skip the rest
+        return unless $name =~ /\A(?:version|\w+\.p[lm])\z/;
+      }
+    }
+
+    # ignore READMEs, MANIFESTs, INSTALL docs, META.ymls and change logs.
+    # Changes.e2x and README.e2x are needed by enc2xs.
+    return if $name =~ m{^(?:README(?:\.\w+)?)$} && $name ne 'README.e2x';
+    return if $name =~ m{^(?:MANIFEST|META\.yml)$};
+    return if $name =~ m{^(?:INSTALL|TODO|BUGS|CREDITS)$}i;
+    return if $name =~ m{^change(?:s|log)(?:\.libnet)?$}i;
+    return if $name =~ m{^(?:SIGNATURE|PAUSE200\d\.pub)$}; # CPAN files
+    return if $name =~ m{^(?:NOTES|PATCHING)$}; # ExtUtils files
+
+    # if using a shared perl library then ignore:
+    # - static library files [of statically linked extensions];
+    # - import library files and export library files (only present on Win32
+    #   anyway?) and empty bootstrap files [of dynamically linked extensions].
+    return if $Config{useshrplib} eq 'true' and
+             ($name =~ /$Config{_a}$/ or $name =~ /\.exp$/ or ($name =~ /\.bs$/ and -z $name));
+
+    $name = "$dir/$name" if $dir ne '';
+
+    # ignore pods that are stand alone documentation from dual life modules.
+    return if /\.pod\z/ && is_duplicate_pod($_);
+
+    return if $name eq 'ExtUtils/XSSymSet.pm' and !$Is_VMS;
+
+    my $installlib = $installprivlib;
+    if ($dir =~ /^auto\// ||
+	  ($name =~ /^(.*)\.(?:pm|pod)$/ && $archpms{$1}) ||
+	  ($name =~ /^(.*)\.(?:h|lib)$/i && ($Is_W32 || $Is_NetWare)) ||
+	  $name=~/^Config_(heavy|git)\.pl\z/
+       ) {
+	$installlib = $installarchlib;
+	return unless $do_installarchlib;
+    } else {
+	return unless $do_installprivlib;
+    }
+
+    if ($Is_NetWare && !$opts{netware} && /\.(?:nlp|nlm|bs)$/) {
+        # Don't copy .nlp,.nlm files, doesn't make sense on Windows and also
+        # if copied will give problems when building new extensions.
+        # Has to be copied if we are installing on a NetWare server and
+        # hence the check !$opts{netware}
+        return;
+    }
+
+    if (-f $_) {
+	my $xname = "$installlib/$name";
+	$xname =~ s/^\Q$opts{destdir}\E//;
+	$packlist->{$xname} = { type => 'file' };
+        if ($opts{force} || compare($_, "$installlib/$name") || $opts{notify}) {
+	    unlink("$installlib/$name");
+	    mkpath("$installlib/$dir");
+	    # HP-UX (at least) needs to maintain execute permissions
+	    # on dynamically-loaded libraries.
+            if (copy_if_diff($_, "$installlib/$name")) {
+                strip("-S", "$installlib/$name")
+                    if $^O eq 'darwin' and /\.(?:so|$dlext|a)$/;
+                chmod(/\.(so|$dlext)$/ ? 0555 : 0444, "$installlib/$name");
+            }
+	}
+    }
+}
+
+# Copy $from to $to, only if $from is different than $to.
+# Also preserve modification times for .a libraries.
+# On some systems, if you do
+#   ranlib libperl.a
+#   cp libperl.a /usr/local/lib/perl5/archlib/CORE/libperl.a
+# and then try to link against the installed libperl.a, you might
+# get an error message to the effect that the symbol table is older
+# than the library.
+# Return true if copying occurred.
+
+sub copy_if_diff {
+    my($from,$to)=@_;
+    return 1 if (($^O eq 'VMS') && (-d $from));
+    my $xto = $to;
+    $xto =~ s/^\Q$opts{destdir}\E//;
+    my $perlpodbadsymlink;
+    if ($from =~ m!^pod/perl[\w-]+\.pod$! &&
+	-l $from &&
+	! -e $from) {
+	# Some Linux implementations have problems traversing over
+	# multiple symlinks (when going over NFS?) and fail to read
+	# the symlink target.  Combine this with the fact that some
+	# of the pod files (the perl$OS.pod) are symlinks (to ../README.$OS),
+	# and you end up with those pods not getting installed.
+	$perlpodbadsymlink = 1;
+    }
+    -f $from || $perlpodbadsymlink || warn "$0: $from not found";
+    $packlist->{$xto} = { type => 'file' };
+    if ($opts{force} || compare($from, $to) || $opts{notify}) {
+	safe_unlink($to);   # In case we don't have write permissions.
+	if ($perlpodbadsymlink && $from =~ m!^pod/perl(.+)\.pod$!) {
+	    $from = "README.$1";
+	}
+	copy($from, $to);
+	# Restore timestamps if it's a .a library or for OS/2.
+	if (!$opts{notify} && ($Is_OS2 || $to =~ /\.a$/)) {
+	    my ($atime, $mtime) = (stat $from)[8,9];
+	    utime $atime, $mtime, $to;
+	}
+	1;
+    }
+}
+
+sub strip
+{
+    my(@args) = @_;
+
+    return unless $opts{strip};
+
+    my @opts;
+    while (@args && $args[0] =~ /^(-\w+)$/) {
+	push @opts, shift @args;
+    }
+
+    foreach my $file (@args) {
+	if (-f $file) {
+	    if ($opts{verbose}) {
+		print "  strip " . join(' ', @opts);
+		print " " if (@opts);
+		print "$file\n";
+	    }
+	    system("strip", @opts, $file);
+	} else {
+	    print "# file '$file' skipped\n" if $opts{verbose};
+	}
+    }
+}
+
+# ex: set ts=8 sts=4 sw=4 et: