Global USE flags

Flag Description Packages
X Build the XCB platform plugin and enable X11 integration 3
gnome Build the GNOME-like decoration plugin (loaded by default with GNOME) 2
gtk Build the GTK platform theme plugin 2
introspection 2
qt5 5
qt6 4

Category USE flags

ayatana-indicators

Flag Description Packages
rda 2

dev-qt

Flag Description Packages
dbus 2
eglfs Build the EGL Full Screen/Single Surface platform plugin 2
gles2-only 5
png 2
qml Build QML/QtQuick bindings and imports 4
vulkan Enable support for Vulkan-based server buffer integration 3
widgets Enable QtWidgets support 3

Local USE flags

dev-libs

librda

Flag Description
ogon
x2go

dev-qt

qtcore

Flag Description
icu
old-kernel Disable syscalls not available on Linux kernels older than 4.11

qtdeclarative

Flag Description
cpu_flags_x86_sse2
jit
localstorage Build the LocalStorage import for QtQuick (requires QtSql)
network Enable QtNetwork support
opengl Enable OpenGL support
qmlls Build the qmlls tool using <pkg>dev-qt/qtlanguageserver</pkg>
sql Enable QtSQL support

qtgui

Flag Description
accessibility
egl
evdev Enable support for input devices via evdev
ibus Build the IBus input method plugin
jpeg
libinput Enable support for input devices via <pkg>dev-libs/libinput</pkg>
linuxfb Enable Linux framebuffer support for embedded devices
tslib Enable support for touchscreen devices via <pkg>x11-libs/tslib</pkg>
tuio Build plugin to receive touch events over the TUIO protocol
udev
vnc
wayland Provide <pkg>dev-qt/qtwayland</pkg> to ensure Qt applications can be run as Wayland clients

qtmultimedia

Flag Description
alsa
gstreamer Enable <pkg>media-libs/gstreamer</pkg> support
openal
pipewire Enable <pkg>media-video/pipewire</pkg> support
pulseaudio

qtnetwork

Flag Description
gssapi Enable support for GSSAPI (<pkg>virtual/krb5</pkg>)
libproxy Use <pkg>net-libs/libproxy</pkg> for automatic HTTP/SOCKS proxy configuration
sctp
ssl

qtprintsupport

Flag Description
cups

qtsql

Flag Description
freetds
mysql
oci8
odbc
postgres
sqlite

qtwayland

Flag Description
compositor Enable support for the wayland compositor / server APIs

gnome-extra

zeitgeist

Flag Description
datahub
doc
downloads-monitor
fts
nls
sql-debug
telepathy
test

gui-libs

libayatana-common

Flag Description
lomiri

lomiri-base

gentoo-lomiri-env

Flag Description
dev

lomiri-meta

Flag Description
firefox

lomiri-ui-toolkit

Flag Description
bluetooth

lomiri-themes

suru-icon-theme

Flag Description
extra

x11-misc

lightdm

Flag Description
audit
elogind
non-root Use non-root user by default
systemd
vala