If you are using Build.PL define the {requires}{perl} = VERSION field. If you are using MakeMaker (Makefile.PL) you should upgrade ExtUtils::MakeMaker to 6.48 and use MIN_PERL_VERSION parameter. Perl::MinimumVersion can help you determine which version of Perl your module needs.

Add a META.json to the distribution. Your buildtool should be able to autogenerate it.

Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: Lemonldap::NG::Portal, Lemonldap::NG::Portal::AuthApache, Lemonldap::NG::Portal::AuthCAS, Lemonldap::NG::Portal::AuthChoice, Lemonldap::NG::Portal::AuthDBI, Lemonldap::NG::Portal::AuthLA, Lemonldap::NG::Portal::AuthLDAP, Lemonldap::NG::Portal::AuthMulti, Lemonldap::NG::Portal::AuthNull, Lemonldap::NG::Portal::AuthOpenID, Lemonldap::NG::Portal::AuthProxy, Lemonldap::NG::Portal::AuthRemote, Lemonldap::NG::Portal::AuthSAML, Lemonldap::NG::Portal::AuthSSL, Lemonldap::NG::Portal::AuthTwitter, Lemonldap::NG::Portal::CDA, Lemonldap::NG::Portal::Display, Lemonldap::NG::Portal::IssuerDBCAS, Lemonldap::NG::Portal::IssuerDBNull, Lemonldap::NG::Portal::IssuerDBOpenID, Lemonldap::NG::Portal::IssuerDBSAML, Lemonldap::NG::Portal::Notification, Lemonldap::NG::Portal::Notification::DBI, Lemonldap::NG::Portal::Notification::File, Lemonldap::NG::Portal::OpenID::SREG, Lemonldap::NG::Portal::OpenID::Server, Lemonldap::NG::Portal::PasswordDBChoice, Lemonldap::NG::Portal::PasswordDBDBI, Lemonldap::NG::Portal::PasswordDBLDAP, Lemonldap::NG::Portal::PasswordDBNull, Lemonldap::NG::Portal::SharedConf, Lemonldap::NG::Portal::UserDBChoice, Lemonldap::NG::Portal::UserDBDBI, Lemonldap::NG::Portal::UserDBLDAP, Lemonldap::NG::Portal::UserDBMulti, Lemonldap::NG::Portal::UserDBNull, Lemonldap::NG::Portal::UserDBOpenID, Lemonldap::NG::Portal::UserDBProxy, Lemonldap::NG::Portal::UserDBRemote, Lemonldap::NG::Portal::UserDBSAML, Lemonldap::NG::Portal::_CAS, Lemonldap::NG::Portal::_Choice, Lemonldap::NG::Portal::_DBI, Lemonldap::NG::Portal::_LDAP, Lemonldap::NG::Portal::_LibAccess, Lemonldap::NG::Portal::_Multi, Lemonldap::NG::Portal::_Proxy, Lemonldap::NG::Portal::_Remote, Lemonldap::NG::Portal::_SAML, Lemonldap::NG::Portal::_SMTP, Lemonldap::NG::Portal::_SOAP, Lemonldap::NG::Portal::_WebForm, Lemonldap::NG::Portal::_i18n

Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build or Dist::Zilla::Plugin::MetaProvides do this automatically for you.

Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).

This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.