Global USE flags

Flag Description Packages
X 2
accessibility 5
cli 6
debug 5
doc 11
introspection 7
nls 3
sdl 2
spell 2
sse41 2
static-libs 3
test 6
tools 2

Category USE flags

dev-lang

Flag Description Packages
gc 2

Local USE flags

app-emulation

emu80v4

Flag Description
lite
qt

emulith

Flag Description
compiler
floppy

oricutron

Flag Description
sdl2

app-misc

decker

Flag Description
danger

app-text

stardict

Flag Description
advertisement
cal
dictdotcn
espeak
espeak-ng
examples
flite
fortune
gnome
gucharmap
htmlparse
info
man
perl
powerwordparse
pronounce
updateinfo
wikiparse
wordnet
xdxfparse
youdaodict

dev-lang

fpc

Flag Description
source

voc

Flag Description
bindings Build the X11, Cairo and raylib shared bindings
clang Use Clang as the C backend
elibc_glibc
gcc Use GCC as the C backend
kernel_linux
modular Build shared modules, hresh and its compiler, browser and editor (Linux with glibc)
network Build the Linux Internet, HTTP, TLS, HTTPS, Gemini and XMPP transport libraries and the xmpp-publish command
ocat Build the Oberon text-file conversion tool
tcc Use Tiny C as the C backend

dev-libs

gplugin

Flag Description
gtk
vala

dev-vcs

got

Flag Description
gitwrapper Build gitwrapper and point it to Git’s libexec path
webd Build/install gotwebd (FastCGI web UI; needs libevent)

games-arcade

thrust

Flag Description
ggi
netpbm
pbm
sound
svga
x

mail-client

sylpheed

Flag Description
crypt
ipv6
ldap
oniguruma Use <pkg>dev-libs/oniguruma</pkg> for regular expression
ssl
xface

media-fonts

uw-ttyp0

Flag Description
bdf

media-sound

butt

Flag Description
aac

net-client

lagrange

Flag Description
bidi
gui
harfbuzz
jxl
mp3
ncurses
opus
tui
webp

net-dns

rn

Flag Description
systemd

net-im

barev-purple

Flag Description
gstreamer

pidgin3

Flag Description
demo
ircv3
libsecret
link-local-messaging
sip
xmpp
xscreensaver
zulip

psi

Flag Description
aspell
dbus
enchant
extras
hunspell
iconsets
keyring
qt6
webengine

purple-googlechat

Flag Description
pidgin3

net-libs

libsrtp

Flag Description
nss
openssl

net-news

tomar

Flag Description
video

x11-plugins

wmlaptop

Flag Description
acpi
longrun

x11-terms

xterm

Flag Description
Xaw3d
openpty
regis
sixel
toolbar
truetype
unicode
verify-sig
xinerama