diff -r 000000000000 -r 6474c204b198 build/unix/uniq.pl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build/unix/uniq.pl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,91 @@
+#!/usr/bin/env perl
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+##----------------------------##
+##---] CORE/CPAN INCLUDES [---##
+##----------------------------##
+use strict;
+use warnings;
+use Getopt::Long;
+
+##-------------------##
+##---]  EXPORTS  [---##
+##-------------------##
+our $VERSION = qw(1.1);
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+my %argv;
+my $modver = $Getopt::Long::VERSION || 0;
+my $isOldGetopt = ($modver eq '2.25') ? 1 : 0;
+
+###########################################################################
+## Intent: Script init function
+###########################################################################
+sub init
+{
+    if ($isOldGetopt)
+    {
+	# mozilla.build/mingw perl in need of an upgrade
+	# emulate Getopt::Long switch|short:init
+	foreach (qw(debug regex sort))
+	{
+	    if (defined($argv{$_}))
+	    {
+		$argv{$_} ||= 1;
+	    }
+	}
+    }
+} # init
+
+##----------------##
+##---]  MAIN  [---##
+##----------------##
+my @args = ($isOldGetopt)
+    ? qw(debug|d regex|r sort|s)
+    : qw(debug|d:1 regex|r:1 sort|s:1)
+    ;
+
+unless(GetOptions(\%argv, @args))
+{
+    print "Usage: $0\n";
+    print "  --sort   Sort list elements early\n";
+    print "  --regex  Exclude subdirs by pattern\n";
+}
+
+init();
+my $debug = $argv{debug} || 0;
+
+my %seen;
+my @out;
+my @in = ($argv{sort}) ? sort @ARGV : @ARGV;
+
+foreach my $d (@in)
+{
+    next if ($seen{$d}++);
+
+    print "   arg is $d\n" if ($debug);
+
+    if ($argv{regex})
+    {
+        my $found = 0;
+        foreach my $dir (@out)
+	{
+	    my $dirM = quotemeta($dir);
+            $found++, last if ($d eq $dir || $d =~ m!^${dirM}\/!);
+        }
+	print "Adding $d\n" if ($debug && !$found);
+        push @out, $d if (!$found);
+    } else {
+	print "Adding: $d\n" if ($debug);
+        push(@out, $d);
+    }
+}
+
+print "@out\n"
+
+# EOF