Unable to include both xmpp.hrl and jlib.hrl

... existing jlib.hrl content ...

-endif.

-behaviour(gen_mod).

-include("ejabberd.hrl").
-include("logger.hrl").
-include("xmpp.hrl").
-include("jlib.hrl").

-define(NS_HELLO_WORLD, <<"urn:xmpp:helloworld">>).

%% gen_mod API callbacks
-export([start/2,
         c2s_self_presence/1,
         depends/2,
         mod_opt_type/1,
         process_local_iq/3,
         stop/1]).

start(Host, Opts) ->
    ?INFO_MSG("Hello, ejabberd world!", []),
    ejabberd_hooks:add(c2s_self_presence, Host, ?MODULE, c2s_self_presence, 50),
    IQDisc = gen_mod:get_opt(iqdisc, Opts, gen_iq_handler:iqdisc(Host)),
    gen_iq_handler:add_iq_handler(ejabberd_local, Host,
                                  ?NS_HELLO_WORLD, ?MODULE, process_local_iq, IQDisc),
    ok.

stop(Host) ->
    ?INFO_MSG("Bye bye, ejabberd world!", []),
    gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_HELLO_WORLD),
    ejabberd_hooks:delete(c2s_self_presence, Host, ?MODULE, c2s_self_presence, 50),
    ok.

-spec c2s_self_presence({presence(), ejabberd_c2s:state()})
      -> {presence(), ejabberd_c2s:state()}.
c2s_self_presence({_, #{pres_last := _}} = Acc) ->
    %% This is just a presence update, nothing to do
    Acc;
c2s_self_presence({#presence{type = available}, #{jid := New}} = Acc) ->
    LUser = New#jid.luser,
    LServer = New#jid.lserver,
    ?DEBUG("user_available: do stuff ~p @ ~p ", [LUser, LServer]),
    Acc;
c2s_self_presence(Acc) ->
    Acc.

process_local_iq(_From, _To, #iq{type = set, sub_el = SubEl, xmlns = ?NS_HELLO_WORLD} = IQ) ->
    ?INFO_MSG("Processing SET query:~n ~p", [IQ]),
    IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_AUTHORIZED]};
process_local_iq(_From, _To, #iq{type = get, xmlns = ?NS_HELLO_WORLD} = IQ) ->
    ?INFO_MSG("Processing GET query:~n ~p", [IQ]),
    IQ#iq{type = result, sub_el = {xmlel, "result", [{"xmlns", ?NS_HELLO_WORLD}], [{xmlel, "hello", [], [{xmlcdata, <<"human">>}]}]}};
process_local_iq(_From, _To, #iq{sub_el = SubEl} = IQ) ->
    ?INFO_MSG("Processing IQ other type:~n ~p", [IQ]),
    IQ#iq{type = error, sub_el = [SubEl, ?ERR_FEATURE_NOT_IMPLEMENTED]}.

depends(_Host, _Opts) ->
    [].

mod_opt_type(_) -> [].