LDAP authentication via GSSAPI

Hello,
   I want to perform an LDAP bind using the Windows credentials I 
already have (after logging on on my Windows machine).
The LDAP server is Microsoft AD LDS. (Could  be also ADS - both LDAP 
servers support this kind of login.)

I think the following code should work - but it does not (on Windows):

use strict;
use warnings;
use Net::LDAP;
require Authen::SASL;

my $host    = 'ldap://localhost:389/';
my $ldap_base = 'c=de';

my $sasl = Authen::SASL->new( mechanism => 'GSSAPI' );
print "Mechanism: ".$sasl->mechanism."\n";
my $ldap;

$ldap = Net::LDAP->new($host);
my $bind_res = $ldap->bind(sasl => $sasl);
if ($bind_res->code) {
   print "Bind problem: code ".$bind_res->code.", error 
".$bind_res->error."\n";
} else {
   print "Bind successful"."\n";
}

Output:

Mechanism: GSSAPI
Bind problem: code 82, error No SASL mechanism found
  at C:/Perl64/site/lib/Authen/SASL.pm line 77.
  at C:/Perl64/site/lib/Net/LDAP.pm line 460.

I'm using ActiveState Perl 5.20 .
C:\Perl64\site\lib\Authen\SASL\Perl\GSSAPI.pm  is there.
But also "require Authen::SASL::Perl::GSSAPI;" fails:

Can't locate GSSAPI.pm in @INC (you may need to install the GSSAPI 
module) (@INC
  contains: C:/Perl64/site/lib C:/Perl64/lib .) at 
C:/Perl64/site/lib/Authen/SASL
/Perl/GSSAPI.pm line 10, <DATA> line 751.
BEGIN failed--compilation aborted at 
C:/Perl64/site/lib/Authen/SASL/Perl/GSSAPI.
pm line 10, <DATA> line 751.

The reason is probably that line 10 contains "use GSSAPI;".

According to http://code.activestate.com/ppm/GSSAPI/ : GSSAPI couldn't 
be compiled for Windows.

http://www.perlmonks.org/?node_id=851947 describes the same problem but 
doesn't offer a solution.

Is there a solution? Is there another way (e.g. another module than 
Authen::SASL) to get this working?

Regards,  Jochen Keutel.