Install the following perl modules:

    Digest::MD5		Digest-MD5-2.20.tar.gz
    Digest::SHA1	Digest-SHA1-2.01.tar.gz
    Mime::Base64	MIME-Base64-2.12.tar.gz
    Convert::ASN1	Convert-ASN1-0.15.tar.gz
    Net::LDAP		perl-ldap-0.26.tar.gz

Note: Digest::MD5 and Convert::ASN1 must be installed _prior_ to building
perl-ldap

In general this just entails unpacking the archive, and running (from each
modules directory):
$ perl Makefile.PL
$ make
$ make test
And then as root:
# make install