dev-cpp/yaml-cpp:=
>=dev-libs/boost-1.70.0:=
media-libs/alsa-lib
sys-libs/readline:0=
virtual/libudev:=

fftw?
      ( sci-libs/fftw:3.0= )

jack?
      ( virtual/jack )

!jack?
      ( media-libs/portaudio )

qt5?
      ( dev-qt/qtcore:5 dev-qt/qtgui:5 dev-qt/qtnetwork:5 dev-qt/qtprintsupport:5 dev-qt/qtsvg:5 dev-qt/qtwidgets:5 )

server?
      ( !app-admin/supernova )

sndfile?
      ( media-libs/libsndfile )

webengine?
      ( dev-qt/qtwebchannel:5 dev-qt/qtwebengine:5[widgets] dev-qt/qtwebsockets:5 )

X?
      ( x11-libs/libX11 x11-libs/libXt )

zeroconf?
      ( net-dns/avahi )