Global USE flags

Flag	Description	Packages
alsa		2
berkdb	Support legacy wallets in Berkeley DB format	2
jack		2
pulseaudio		2
test		2

Local USE flags

app-crypt

heimdal

Flag	Description
X
afs
caps
gdbm
hdb-ldap	Adds support for LDAP as a database backend
lmdb	Add support for using <pkg>dev-db/lmdb</pkg> for lookup tables
otp	Adds support for one-time passwords
selinux
static-libs

media-video

obs-studio

Flag	Description
browser	Enable browser source support via (precompiled) CEF.
decklink	Build the Decklink plugin.
fdk	Build with LibFDK AAC support.
lua
mpegts	Enable native SRT/RIST mpegts output.
nvenc
pipewire	Build with PipeWire support.
python	Build with scripting support for Python 3.
qsv	Build with Intel Quick Sync Video support.
sndio	Build with sndio support.
speex	Build with Speex noise suppression filter support.
test-input	Build and install input sources used for testing.
truetype
v4l
vlc	Build with VLC media source support.
wayland
webrtc	Build with WebRTC support.
websocket	Build with WebSocket API support.

net-p2p

litecoin-core

Flag	Description
asm
cli	Build and install bitcoin-cli command line interface
daemon	Build and install bitcoind daemon
dbus
examples
external-signer	Include support for external wallet signer programs
gui	Build and install Bitcoin-Qt GUI
kde
man
nat-pmp	Enable NAT-PMP port forwarding
qrcode	Enable generation of QR Codes for receiving payments
sqlite	Support descriptor wallets in SQLite format
systemtap	Enable SystemTap/DTrace tracing
test-full	Run tests that take a long time
upnp	Enable Universal Plug and Play
zeromq	Report blocks and transactions via zeromq

sci-misc

praat

Flag	Description
gtk
pango	Without USE=gtk, build with minimal graphics support using <pkg>x11-libs/pango</pkg>

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