Global USE flags

Flag	Description	Packages
X		6
cpu_flags_x86_sse2		2
custom-memory-management	Enable support for custom memory management	0
debug		4
doc		3
elogind	Enable support for rootless session via elogind	2
examples		5
hardened		3
http	Enable support for custom http client	0
icu		2
introspection		2
kerberos		2
ldap	Enable seahorse to manipulate GPG keys on a LDAP server.	2
llvm	Add support for llvm JIT engine	2
lto		4
lz4		2
man		2
python		3
readline		2
seccomp		2
selinux		4
ssl		8
static-libs		22
systemd		5
test		14
threads		2
vulkan		2
wayland		4
zlib		4
zstd		3

Category USE flags

dev-libs

Flag	Description	Packages
tests		11
vsock		2
websockets		2

sci-libs

Flag	Description	Packages
gmp		2
papilo		2

Local USE flags

app-containers

crun

Flag	Description
bpf	Enable in Kernel, eBPF (enhanced Berkley Packet Filter) support for managing device controllers.
caps
criu	Enable CRIU based checkpoint/restore support

app-crypt

seahorse

Flag	Description
zeroconf

app-editors

neovim

Flag	Description
lua_single_target_luajit
nvimpager
tui

app-misc

ddcutil

Flag	Description
usb-monitor
user-permissions
video_cards_nvidia

dev-db

postgresql

Flag	Description
nls
pam
perl
server	Disable to build and install the clients and libraries only.
tcl
uuid	Enable server side UUID generation (via <pkg>dev-libs/ossp-uuid</pkg>).
xml

dev-libs

aws-c-compression

Flag	Description
huffman

librdkafka

Flag	Description
sasl

redis++

Flag	Description
async

s2n-tls

Flag	Description
trace

dev-python

pygobject

Flag	Description
cairo

gnome-base

librsvg

Flag	Description
avif
docs
vala

gui-apps

foot

Flag	Description
grapheme-clustering
pgo

wlgreet

Flag	Description
clang

wofi

Flag	Description
dmenu
drun
run

yambar

Flag	Description
alsa
json
mpd
pipewire
pulseaudio

gui-libs

wlroots

Flag	Description
drm
lcms
libinput
liftoff
session
x11-backend
xcb-errors

gui-wm

sway

Flag	Description
swaybar
swaynag
tray
wallpapers

media-libs

fcft

Flag	Description
text-shaping

mesa

Flag	Description
d3d9
lm-sensors
opencl
opengl
osmesa
proprietary-codecs
unwind
vaapi
valgrind
vdpau
video_cards_
video_cards_freedreno
video_cards_intel
video_cards_nouveau
video_cards_panfrost
video_cards_r300
video_cards_r600
video_cards_radeonsi
video_cards_vmware
video_cards_zink
vulkan-overlay
xa

noise-suppression-for-voice

Flag	Description
ladspa
lv2	Enable the LV2 plugin
vst	Enable the VST plugin
vst3	Enable the VST3 plugin

net-libs

nodejs

Flag	Description
inspector
npm
pax-kernel
snapshot
system-icu
system-ssl

net-misc

kafka-bin

Flag	Description
connect	Install init for Kafka Connect Distributed mode
internal-zookeeper	Use bundled local zookeeper instance

sci-libs

HiGHS

Flag	Description
cxx
fortran

or-tools

Flag	Description
coinor
cplex
express
glop
glpk
java
parser
samples
scip

scip

Flag	Description
ampl
ipopt
worhp
zimpl

soplex

Flag	Description
boost
mpfr

sys-apps

fwupd

Flag	Description
amdgpu
amt
archive
bash-completion
bluetooth
cbor
fastboot
flashrom
gnutls
gtk-doc
logitech
lzma
minimal
modemmanager
nvme
policykit
spi
sqlite
synaptics
tpm
uefi

sys-auth

authenticator

Flag	Description
x11

sys-cluster

minikube

Flag	Description
libvirt	Build plugin for kvm

virtual

rust

Flag	Description
rustfmt

www-apps

gitlab

Flag	Description
favicon	For the Custom Favicon to work, GraphicsMagick needs to be installed
gitaly_git	Use the Git version provided by Gitaly
gitlab-config	Config in /opt/gitlab/gitlab/config instead of /etc/gitlab (s. news 2021-02-22-etc-gitlab)
mail_room	Enables support for GitLab MailRoom
pages	Pulls in the compatible version of www-apps/gitlab-pages
prometheus	Enables support for the Prometheus monitoring system
relative_url	Support for relative url

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