Linuxsampler : there is no audio output driver

[Marcel Bonnet]

Hi! I was trying to load some LSCP files and I'm surprised with a messasge:
There is no audio output driver 'JACK'.

I entered lscp shell, and no drivers found:

lscp=# LIST AVAILABLE_AUDIO_OUTPUT_DRIVERS
(return empty)

I checked make config:

[@machine linuxsampler #]  make showconfig
===> The following configuration options are available for
linuxsampler-2.0.0_1:
     ALSA=off: ALSA audio architecture support
     DSSI=on: Enable DSSI support
     JACK=on: JACK audio server support
     LV2=on: Enable LV2 support
===> Use 'make config' to modify these settings

Here is linuxsampler startup message:

[@machine linuxsampler]$    linuxsampler --instruments-db-location
instrumentos.db
LinuxSampler 2.0.0
Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck
Copyright (C) 2005-2015 Christian Schoenebeck
Detected features: disabled at compile time
Automatic Stacktrace: Off
Creating Sampler...OK
Registered sampler engines: 'GIG','SF2','SFZ'
Registered MIDI input drivers: JACK
Registered audio output drivers: JACK
Loading instrument editor plugins...OK
Registered instrument editors:
Registered internal effect systems: LADSPA
Registered internal effects: 242
Starting LSCP network server (0.0.0.0:8888)...Thread: WARNING, can't
mlockall() memory!
OK
LinuxSampler initialization completed. :-)

LSCPServer: Client connection established on socket:4.
There is no audio output driver 'JACK'.

Thanks in advance, folks.

-- 
Marcel Bonnet