[GEM-dev] Problem to run VLC plug-in

[Jack]

It seems libvlc-dev (and libvlccore-dev ?) are not installed during
'apt-get build-dep gem'.
So, I decided to install them :
$ sudo apt-get install libvlc-dev libvlccore-dev
then
$ ./configure
$ make
$ sudo make install (it recompile all and then install)
$ pd
...
dylib loading file './gem_videoVLC.so'!
[000000000110ffd8] core libvlc error: No plugins found! Check your VLC
installation

My conf :
Ubuntu 15.10
pd 0.46.7
GEM: ver: 0.93.git 54b4b7c

I missed something with the installation of VLC ?
++

Jack