--- /dev/null
+++ Libc/Libc-391.2.7/makeCombos
@@ -0,0 +1,50 @@
+#!/usr/bin/perl
+#
+# Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+#
+# @APPLE_LICENSE_HEADER_START@
+# 
+# This file contains Original Code and/or Modifications of Original Code
+# as defined in and that are subject to the Apple Public Source License
+# Version 2.0 (the 'License'). You may not use this file except in
+# compliance with the License. Please obtain a copy of the License at
+# http://www.opensource.apple.com/apsl/ and read it before using this
+# file.
+# 
+# The Original Code and all software distributed under the License are
+# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+# Please see the License for the specific language governing rights and
+# limitations under the License.
+# 
+# @APPLE_LICENSE_HEADER_END@
+
+use strict;
+
+# combine arguments without a slash, with the preceding argument with a slash
+# use @ instead of space for separator
+my @args;
+my $prev;
+for(@ARGV) {
+    if(m,/,) {
+	push(@args, $prev) if $prev;
+	$prev = $_;
+    } else {
+	$prev .= "\@$_";
+    }
+}
+push(@args, $prev) if $prev;
+
+# now make all unique combinations
+my %combos;
+foreach my $variant (@args) {
+    my($v, $defines) = split('/', $variant, 2);
+    my %new;
+    @new{$v, map("$_-$v", keys %combos)} = ($defines, map("$_\@$defines", values %combos));
+    %combos = (%combos, %new);
+}
+for(sort keys(%combos)) {
+    printf "%s/%s\n", $_, $combos{$_};
+}