FTBFS: UPnP linking error
/usr/bin/ld: /home/remi/videolan/vlc/contrib/x86_64-linux-gnu/lib/libupnp.a(libupnp_la-upnpapi.o): in function `UpnpRegisterClient':
/home/remi/videolan/vlc/contrib/linux/upnp/upnp/src/api/upnpapi.c:1355: undefined reference to `pthread_rwlock_wrlock'