dev-cpp/eigen:3
>=dev-libs/cJSON-1.7.13
dev-libs/libbsd
dev-util/glslang
media-libs/mesa[egl
      (+)
]
media-libs/openxr
virtual/libusb
virtual/libudev

dbus?
      ( sys-apps/dbus )

euroc?
      ( media-libs/opencv )

ffmpeg?
      ( media-video/ffmpeg )

gles?
      ( media-libs/mesa[gles1,gles2] )

gstreamer?
      ( media-libs/gstreamer )

hidapi?
      ( dev-libs/hidapi )

opengl?
      ( virtual/opengl )

sdl?
      ( media-libs/libsdl2 )

systemd?
      ( sys-apps/systemd )

uvc?
      ( media-libs/libuvc )

vive?
      ( media-libs/libsurvive sys-libs/zlib )

vulkan?
      ( dev-util/vulkan-headers media-libs/vulkan-loader )

wayland?
      ( dev-libs/wayland dev-libs/wayland-protocols dev-util/wayland-scanner )

X?
      ( x11-libs/libX11 x11-libs/libXrandr x11-libs/libxcb )

media-libs/openxr-loader
media-libs/mesa[egl
      (+)
]
dev-cpp/eigen:3
dev-util/glslang
virtual/libusb:=
virtual/libudev
media-libs/libv4l
dev-libs/libbsd
dev-libs/cJSON

wayland?
      ( dev-libs/wayland dev-libs/wayland-protocols dev-util/wayland-scanner )

X?
      ( x11-libs/libX11 x11-libs/libXrandr x11-libs/libxcb )

vulkan?
      ( media-libs/vulkan-loader dev-util/vulkan-headers )

opengl?
      ( virtual/opengl )

opencv?
      ( media-libs/opencv:= )

gles?
      ( media-libs/mesa[gles1,gles2] )

dbus?
      ( sys-apps/dbus )

systemd?
      ( sys-apps/systemd:= )

uvc?
      ( media-libs/libuvc )

ffmpeg?
      ( media-video/ffmpeg:= )

sdl?
      ( media-libs/libsdl2 )

gstreamer?
      ( media-libs/gstreamer )

psvr?
      ( dev-libs/hidapi )

vive?
      ( sys-libs/zlib:= )