Global USE flags

Flag	Description	Packages
${PYTHON_REQUIRED_USE}		3
X	Provides better UX for TTY backend	49
abi_x86_32		2
accessibility		3
alsa	ALSA support	19
ao		2
apparmor	Install AppArmor profile	2
appindicator	Install AppIndicator extension for GNOME systray icon support (SNI protocol)	3
archive	Multiarc extended archives support	3
arm		2
autoupdate	Enable the autoupdater.	2
avif	Enable avif support.	5
bar	Installs nwgbar, a horizontal or vertical button bar.	2
bash-completion		2
blas		2
blis	Build a BLIS backend	4
bluetooth	Enable support for bluetooth with the bluez module	5
brotli	Enable support for brotli compression	2
btrfs	Enable Btrfs snapshot management in kernel configuration tab (requires kerneltools)	3
bzip2		2
cairo	Enables the cairo module	2
caps		4
clang	Use Clang compiler instead of GCC	3
cli	Enables building lsfg-vk-cli	5
client	Enable client compilation.	3
cpu_flags_arm_neon		3
cpu_flags_x86_aes		2
cpu_flags_x86_avx2		3
cpu_flags_x86_sse2		3
cpu_flags_x86_sse4_1		3
crypt	Enable end-to-bridge encryption with <pkg>dev-libs/olm</pkg>.	4
cuda	Enable NVIDIA CUDA support	7
cups		7
curl		5
daemon	Build the feedbackd daemon	5
dbus	Enable D-Bus support for desktop integration	20
debug	Enable debug build and built-in debugger	44
deprecated	Enable support for deprecated features	2
desktop-portal	Use <pkg>sys-apps/xdg-desktop-portal</pkg> to open file dialogs	2
discord	Enables Discord Rich Presence	4
doc	build manpages	60
docker	Have forgejo-runner use <pkg>app-containers/docker</pkg>	2
dracut	Install dracut modules	2
drm	Install a standalone Waydroid session	3
egl	EGL context support	4
elogind	Build plugin to support MPRIS using elogind.	3
emoji	Enable icons and set them to use the noto-emoji font (see <pkg>media-fonts/noto-emoji</pkg>)	2
evdev	Enable evdev input support	2
examples	Build Examples	43
experimental	Allow experimental features to be configured	2
ffmpeg	Enable video recording feature	10
flac	Add support for FLAC: Free Lossless Audio Codec as compression algorithm	3
flexiblas	Use <pkg>sci-libs/flexiblas</pkg> as blas provider	4
fontconfig		3
fuse	Build dwarfs Fuse driver for image mounting	4
geolocation	Physical position determination support from Qt framework	2
git	Uploading binpkgs and releases to git repository.	3
gles2	Use GLESv2 instead of desktop GL	3
glib	Use GLib library for platform independence instead of direct system calls	2
gnome	build client for GNOME Wayland	3
gnome-keyring	Use libsecret/gcr for password storage	3
gnutls		2
gpm		2
graphviz	Add support of generation of a dependencies graph	2
gstreamer	Enable gstreamer	3
gtk		21
gtk-doc		9
gtk3	Generate bindings for GTK+3	3
gtk4	Generate bindings for GTK 4	2
gui	Native GPU-accelerated window via wgpu	19
gzip		2
hardened		2
harfbuzz	Use <pkg>media-libs/harfbuzz</pkg> for better support of RTL languages	2
heif		4
highlight	Syntax highlighting support	2
hip	Build a HIP (ROCm) backend	2
http	Support fetching disks over HTTP using	3
icons	Enable icons and set them to use icons-in-terminal (see https://github.com/sebastiencs/icons-in-terminal)	2
inotify	Use the inotify API for filesystem monitoring instead of a generic check, requires 'posix' to be unset	2
introspection		7
ipv6		2
jack	Enable jack output and jackmidi input (CLI only)	9
java		2
jemalloc		5
jpeg		2
jpeg2k		2
jpegxl	Enable static jpegxl/jxl support.	6
kde	Add GTK+ Plasma's Breeze widget style	2
kerberos		4
l10n_		3
libnotify	Build libnotify support for notifications	6
llvm	Enable the LLVM backend for disassembly and symbol demangling	3
lto	Enable Link Time Optimization (LTO)	8
lua		3
lxc	Have forgejo-runner use <pkg>app-containers/lxc</pkg>	2
lz4	Enable lz4 compression / decompression support	2
lzo		3
man	Rebuild man pages from rst files	31
mbedtls	Enable encryption support using <pkg>net-libs/mbedtls</pkg>	2
minimal		2
mp3		3
mpris	Enable access to MPRIS compatible media players using its dbus protocol	5
mqtt	Enable logging via <pkg>app-misc/mosquitto</pkg>	2
music	Enables the music module	2
mysql		2
ncurses	Build console (ncurses) variant	5
network	Allow a single instance of itself, thus subsequent calls to <pkg>media-sound/qbitmplayer</pkg> will just open the already opened instance of it.	5
nls	Add translations support (via <pkg>sys-devel/gettext</pkg>)	8
notifications	Enables the notifications module	4
ocamlopt		66
ogg		2
openal	OpenAL support	2
openblas	Build an OpenBLAS backend	4
opencl	Enable OpenCL support	4
opencv	Enable webcam video driver via computer vision (required for NeuralNet to work)	3
opengl	Enable features that require opengl (opengl backend, and opengl vsync methods)	13
openmp	OpenMP support to build targets in parallel where possible	7
openssl	Enable TLS support with <pkg>dev-libs/openssl</pkg>	4
opus		3
oss	OSS support	2
pam		6
pango	Enable <pkg>x11-libs/pango</pkg>, which is used for improved font support (WPdfImage and WRasterImage)	3
pci	Enables the use of pciutils to detect GPU names	2
pcre		3
perl		3
pgo	Optimize the build using Profile Guided Optimization (PGO)	2
pie	Position Independent Executables - attempt to harden resulting executables, for extra security	4
pipewire	Enable viewing and management of <pkg>media-video/pipewire</pkg> nodes	14
plugins	Support loading libpeas based plugins that enhance capabilities	5
png	Enable screenshot and video capture support via <pkg>media-libs/libpng</pkg>	6
podman	Have forgejo-runner use <pkg>app-containers/podman</pkg>	2
portaudio	Build plugin to support portaudio	7
portmidi	Enable MIDI support via PortMidi	2
postgres		5
profile	Enable support for controlling profile	3
pulseaudio	Enable the pulseaudio backend for audio playback	20
python	Build the Python extension lib_gnu_apl.so	17
qrcode	Enables logging in via QR code support	4
qt5		2
qt6		6
readline		2
rocm	Build a HIP (ROCm) backend	5
samba	SMB support in NetRocks	2
savedconfig		3
screencast	Enable screencasting support via media-libs/tg_owt	2
sdl	Enable support for libsdl	14
sdl2	Enable SDL2 backend	3
seccomp	Linux kernel syscall filtering	2
selinux		6
server	Enable the Phoromatic server	8
sixel	Enable support for Sixel image format	2
sndfile	Audio dumper using libsndfile	3
sndio	Enable support for the media-sound/sndio backend	4
socks5		2
sound	Enable atris sound pack	2
sourceview	Enable syntax highlighting in configuration editors (GtkSourceView)	2
spell	Spellchecking support (enchant/gtkspell)	4
sqlite		10
sqlite3	Use sqlite3	2
ssl	FTPS support in NetRocks	19
static		11
static-libs		29
svg	enables support for SVG icons	3
syslog		2
system-glfw	Use the systems installed version of GLFW (upstream-unsupported)	2
systemd	Install systemd service for gpkg-daemon	41
telemetry		2
test	Run mangohud tests	246
theora		2
threads	Threading support	2
tools	Build internal gtk4 tools	11
tray	Construire avec l'icône de statut	6
udev	Udev/Evdev gamepad support	8
unicode		2
upnp	Enable UPnP support for the server.	3
usb	Enable USB communication via <pkg>dev-python/pyusb</pkg>	3
vaapi		2
vala		7
verify-sig		2
video	Make <pkg>media-sound/qbitmplayer</pkg> not just a Music Player, but a Media Player by enabling its ability to play video files as well.	3
video_cards_amdgpu		2
video_cards_nvidia		5
voice	Enable voice-chat support	2
vorbis	Enable Vorbis codec support	3
vulkan	Enable Vulkan Graphics API support (also needed for compositor)	14
wayland	Run in wayland mode under wayland sessions, x11/xwayland otherwise (x11 sessions are unaffected).	47
webkit	Enable WebKit-based in-app browser (requires USE=wayland)	4
webp		7
wifi	Enable Wi-Fi scanning	2
zlib	zlib support (ZIP extract, PNG decoding/encoding)	7
zsh-completion		2
zstd		2

Category USE flags

app-emulation

Flag	Description	Packages
aot	Enables the dynamic ahead of time recompiler for increased performance on ARM	2
arm64		2

dev-cpp

Flag	Description	Packages
spdlog	enable <pkg>dev-libs/spdlog</pkg> logging backend	2

dev-java

Flag	Description	Packages
headless-awt	Don't install the X backend for AWT, needed by some GUIs	2
source		2

dev-libs

Flag	Description	Packages
zchunk	Build with zchunk support	2

games-emulation

Flag	Description	Packages
truetype	FreeType support	2

gui-apps

Flag	Description	Packages
crash-handler	Enable crash handling using <pkg>dev-cpp/cpptrace</pkg>	2
dwl	DWL (dwm for wayland) support	2
gdk-pixbuf	Enable additional image format support via the <pkg>x11-libs/gdk-pixbuf</pkg> library	2
greetd	Enable <pkg>gui-libs/greetd</pkg> integration	2
hyprland	Enable hyprland specific integrations	3
i3	Enable <pkg>x11-wm/i3</pkg> and <pkg>gui-wm/sway</pkg> specific features	3
layer-shell	Enable wlroots layershell integration through the zwlr-layer-shell-v1 protocol	2
layershell	Enable transparency	2
mpd	Enable support for Music Player Daemon	2
networkmanager	Enable support for the networkmanager wifi module	3
niri	Enable <pkg>gui-wm/niri</pkg> specific integrations via its IPC protocol	2
policykit		2
screencopy	Enable streaming video from monitors and toplevel windows through various protocols	2
session-lock	Enable session lock support through the ext-session-lock-v1 protocol	2
sockets	Enable Unix Sockets (WARNING: Disabling is unsafe!)	2
toplevel-management	Enable management of windows through zwlr-foreign-toplevel-management-v1 protocol	2
upower		2

media-fonts

Flag	Description	Packages
${IUSE_FONTS}		2
geistmono	Install the "Geist Mono" monospace font variant	2
otf	Use the provided Open Type Font font files	5
ttf	Use the provided True Type Font font files	4
variable	Whether to install the variable weight fonts	2

media-gfx

Flag	Description	Packages
exif		2
raw		2

media-libs

Flag	Description	Packages
abi_x86_64		2

media-sound

Flag	Description	Packages
ladspa		2
lv2	Build LV2 plugin	2
midi	Enable midifile input via <pkg>media-libs/libsmf</pkg> (CLI only)	2
mouse	Includes toggleable mouse click support.	2
soundtouch	Build the SoundTouch-based DSP plugin using <pkg>media-libs/libsoundtouch</pkg>	2

net-misc

Flag	Description	Packages
iptables	In addition to <pkg>net-firewall/nftables</pkg>, include support for xtables with <pkg>net-firewall/iptables</pkg>.	2

net-p2p

Flag	Description	Packages
wallet-cli	Build the command line wallet, monero-wallet-cli	2
wallet-rpc	Build the RPC wallet, monero-wallet-rpc	2

sci-misc

Flag	Description	Packages
wmma	Use rocWMMA to enhance flash attention performance	3

sys-block

Flag	Description	Packages
apfs	Support apfs by partclone	2
e2fs	Support e2fs by partclone	2
exfat	Support exfat by partclone	2
f2fs	Compile partclone f2fs tool	2
fat	Support fat by partclone	2
hfs	Support hfs by partclone	2
minix	Support minix by partclone	2
nilfs2	Compile partclone nilfs2 tool	2
ntfs	Support ntfs by partclone	2
reiserfs	Support reiserfs by partclone	2
ufs	Support ufs by partclone	2
vmfs	Support vmfs by partclone	2
xfs	Support xfs by partclone	2

x11-themes

Flag	Description	Packages
frappe	Install Frappe flavor.	2
latte	Install Latte flavor.	2
macchiato	Install Macchiato flavor.	2
mocha	Install Mocha flavor.	2

Local USE flags

app-accessibility

rhvoice

Flag	Description
l10n_${lang:?}
redistributable	Install also non-free (but redistributable) voices

rhvoice-core

Flag	Description
speech-dispatcher	Build a speech-dispatcher middleware module

app-admin

ananicy-cpp

Flag	Description
bpf	Use eBPF for processing

fatrace

Flag	Description
powertop	Install power-usage-report script

krapplet

Flag	Description
pass	Add support for pass compatible storage

app-alternatives

phosh-keyboard

Flag	Description
stevia	Symlink to <pkg>phosh-base/phosh-osk-stevia</pkg>

app-arch

fuse-archive

Flag	Description
fuse2	Build with fuse2 instead of fuse3

app-backup

blocksync-fast

Flag	Description
xxhash	Enable dev-libs/xxhash support for very high speed hashing

kopia-ui-bin

Flag	Description
system-kopia	Use the system-wide <pkg>app-backup/kopia</pkg> instead of bundled.

app-benchmarks

occt-bin

Flag	Description
msr-user-access	Allow non-root access to /dev/cpu/*/msr to read CPU power/voltage

app-containers

arachsys-containers

Flag	Description
suid	allow unprivileged users to have multiple UIDs/GIDs in the container (see CVE-2014-8989 for implications)

waydroid

Flag	Description
clipboard	Enable clipboard manager service using dev-python/pyclip

waydroid-images

Flag	Description
android-10	Install Android version 10
android-11	Install Android version 11
android-13	Install Android version 13
system-gapps	Use the GAPPS variant of system.img
system-vanilla	Use the VANILLA variant of system.img
vendor-halium	Use the HALIUM variant of vendor.img
vendor-mainline	Use the MAINLINE variant of vendor.img

app-crypt

clevis

Flag	Description
pkcs11	Enable PKCS#11 smartcard support
tpm1	Enable support for Trusted Platform Module (TPM) 1.2
udisks

intel-ipsec-mb

Flag	Description
safe-data	sensitive information is cleared on completion of a function call
safe-lookup	lookups which depend on sensitive information are implemented with constant time functions
safe-param	input parameters are checked, looking generally for NULL pointers or an incorrect input length

app-dicts

crow-translate

Flag	Description
piper-tts	Enable Piper neural text-to-speech support (requires onnxruntime and bundled espeak-ng)

app-editors

fresh

Flag	Description
dev-bins	Build extra developer binaries (generate_schema, event_debug)
embed-plugins	Bundle default plugins into the binary as a fallback

imhex

Flag	Description
system-llvm	Use the system LLVM installation

l3afpad

Flag	Description
emacs	Implement Emacs key theme (experimental).

app-emulation

arnold

Flag	Description
inkz80	Use inkz80 processor emulation

cloud-utils

Flag	Description
guest-utils	Installs utilities useful within a guest VM
image-utils	Installs utilities useful for manipulating guest images from outside a guest VM

darling

Flag	Description
cli-dev	Includes cli, python, ruby, and perl, along with some additional targets normally regarded as GUI targets. These additional targets are necessary for certain parts of the Xcode CLI tools.
cli-extra	Includes cli and some additional programs not installed on a standard macOS installation (e.g. GNU tar)
gui-frameworks	Includes gui and many GUI-related frameworks depended upon by Cocoa apps (e.g. audio frameworks). Note that this component only includes non-stub frameworks.
gui-stubs	Includes gui_frameworks and many stubbed GUI-related frameworks.
jsc	Enabled support for a framework used for executing JavaScript code, primarily in web browsers.
metal	Enable support for the Metal graphics framework
multilib
ruby
system	Includes core and everything necessary to enter a shell

looking-glass

Flag	Description
binutils	build backtrace support

app-i18n

fcitx5-lotus

Flag	Description
openrc	Install the OpenRC init script for fcitx5-lotus-server

app-misc

clifm

Flag	Description
arc4random	Use arc4random instead of random, requires 'posix' to be unset
bleach	Support for Bleach, the built-in file names cleaner
fzf	Enable support for tab completion via <pkg>app-shells/fzf</pkg>
lira	Add Lira as the default built-in resource opener
magic	Use libmagic from <pkg>sys-apps/file</pkg> to query file MIME types (instead of using the output of the file command)
media	Enable mounting/unmounting support (via the media and mountpoint commands) using either <pkg>sys-apps/udevil</pkg> or <pkg>sys-fs/udisks</pkg>
nerdfonts	Enable icons and set them to use NerdFonts
posix	Comply with POSIX.1-2008 as much as possible, removing support for Linux-specific "file birth time" information, inotify, and arc4random. Exceptions: for flags 'archive', 'media', and 'lira', although they require non-compliant functionality, enabling them selectively enables the non-compliant code, even with this flag set. (Hence, if your goal is POSIX compliance, make sure to disable those flags too!)
profiles	Enable support for creating, switching, renaming, and deleting of user profiles
qsort	Use Alexey Tourbin's faster qsort implementation
suggestions	Autosuggestion support
tags	Built-in file tagging system support
trash	FreeDesktop compliant trash system support
xdu	Use a home-made implementation of du(1) instead

far2l

Flag	Description
aws	AWS S3 support in Netrocks
chardet	Auto charset detection
colorer	Colorer plugin support
mtp	MTP/PTP plugin support
nfs	NFS support in NetRocks
rar	RAR archives support in MultiArc
sftp	SFTP support in NetRocks
webdav	WebDav support in NetRocks
wxwidgets	GUI backend support

kanata

Flag	Description
cmd	Enable potentially dangerous "cmd" action to be able run arbitrary commands.

navi

Flag	Description
command-execution	Permet l'exécution de commande
repo-management	Permet la gestion de dépôt antisèche (« cheatsheet repository »)

opentrack

Flag	Description
neuralnet	Build NeuralNet face tracker using a webcam as input device (requires opencv openmp)
wine	Support injecting a FreeTrack driver into a running wine prefix

wayvr

Flag	Description
openvr	Support Valve's SteamVR SDK.
openxr	Support Khronos Group's OpenXR API.
osc	Support VRChat's Open Sound Control protocol.
wayvrctl	Build the wayvrctl utility to control ui elements through IPC.

app-portage

gpkg

Flag	Description
grub2	GRUB2 bootloader support in kernel configuration (beta)
kerneltools	Enable kernel configuration tab with auto-compile hooks, bootloader management, and kernel tools
limine	Limine bootloader support in kernel configuration
refind	rEFInd bootloader support in kernel configuration (beta)
systemd-boot	systemd-boot bootloader support in kernel configuration (beta)
vte	Enable embedded VTE terminal for Portage output

pupgrade

Flag	Description
tui	Installs tuipupgrade, the tui frontend for pupgrade

app-shells

mrsh

Flag	Description
libedit

zsh-autosuggestions

Flag	Description
$(ruby_get_use_targets)

dev-build

cargo-make

Flag	Description
rustls	Enable TLS support with rustls

dev-cpp

dpp

Flag	Description
coro	Enable coroutine support

drogon

Flag	Description
mariadb	Add support for the mariadb database
redis	Add support for the Redis database via <pkg>dev-libs/hiredis</pkg>
yaml	Add support for yaml config file

sprout

Flag	Description
texconv	Install texconv from subproject compost
wavconv	Install texconv from subproject darkroom

trantor

Flag	Description
adns

wt

Flag	Description
graphicsmagick	Enable <pkg>media-gfx/graphicsmagick</pkg>, which is used for creating raster images (WRasterImage)
pdf
wttest	Build Wt::Test for automated (integration/unit) tests

xtensor

Flag	Description
tbb	Enable parallel assignment loop using dev-cpp/tbb

dev-db

turso

Flag	Description
uring	Use uring I/O backend

dev-dotnet

gtk-sharp

Flag	Description
atk	Build the ATK bindings.
gdk	Build the GDK bindings.

dev-embedded

esp-idf

Flag	Description
${PYTHON_GDB_USE[@]}
python-gdb	Enable python-dependent gdb for Xtensa and riscv32
riscv32	Enable support for riscv32

qdl

Flag	Description
nbd	Build the nbdkit plugin via <pkg>sys-block/nbdkit</pkg>

rauc

Flag	Description
gpt	Add GPT support
json	Add JSON support
service	Add dbus service

rpi-openocd

Flag	Description
capstone	Support for ARM disassembly via dev-libs/capstone
cmsis-dap	Support for CMSIS-DAP adapter driver via dev-libs/hidapi
dummy	Build the dummy port driver
ftdi	Support for USB FTDI chips via dev-embedded/libftdi
gpiod	Support for linuxgpiod driver via dev-libs/libgpiod
jlink	Support for J-Link driver via dev-embedded/libjaylink
parport	Support for parport JTAG devices
verbose-io	Verbose IO and comm JTAG and USB messages

dev-games

godot-dotnet

Flag	Description
double-precision	Use double-precision floats (default: single-precision)
raycast	Enable the raycast Editor module using <pkg>media-libs/embree</pkg>
speech

dev-lang

fbc

Flag	Description
libffi

gnu-apl

Flag	Description
erlang	Build the Erlang interface
libapl	Build as a shared library rather than an executable
pcre2	Enable pcre2
postgresql	Use postrgesql

swift

Flag	Description
libcxx	Build against <pkg>llvm-runtimes/libcxx</pkg> as the default C++ runtime library over GCC's libdstc++.

swift-bootstrap

Flag	Description
binary	Bootstrap from binary (dev-lang/swift-bin:5/10) instead of building from source (dev-lang/swift:5/10).

dev-libs

croaring

Flag	Description
cpu_flags_x86_avx
cpu_flags_x86_avx512f

librepo

Flag	Description
gpgme	Use GPGME instead of rpm library for OpenPGP key support

libsolv

Flag	Description
expat

nanopb

Flag	Description
pb-malloc	Enable dynamic allocation support in the decoder

open62541

Flag	Description
pubsub	Enable OPC/UA Pub/Sub extensions

xdna-driver

Flag	Description
compress-xz	Compress firmware using xz (<pkg>app-arch/xz-utils</pkg>) before installation
compress-zstd	Compress firmware using zstd (<pkg>app-arch/zstd</pkg>) before installation

xqilla

Flag	Description
tidy	Add Tidy-HTML5 support

zfp

Flag	Description
aligned	Enable aligned memory allocation
cfp	Build CFP arrays library
fasthash	Use a faster but more collision prone hash function
fortran	Build Fortran library
strided	Enable strided access for progressive zfp streams
twoway	Use two-way skew-associative cache
utilities	Build command line utilities

dev-ml

ezjsonm

Flag	Description
lwt	Provides an Lwt variant of the serialisation functions in the Jsonm library.

dev-nim

cligen

Flag	Description
toml	Enable TOML config file support via <pkg>dev-nim/parsetoml</pkg>

dev-python

mastodon-py

Flag	Description
blurhash	Install dependencies required for decoding blurhash strings to images
grapheme	Install dependencies required for grapheme-aware string handling

ptpython

Flag	Description
black	Add support for dev-python/black. Black not always possible on PyPy
ipython	Add support for dev-python/ipython for ptipython

pyfiglet

Flag	Description
contrib	Install fonts that don't have a clear license

pympress

Flag	Description
vlc	Build with python-vlc bindings

pyrime

Flag	Description
prompt-toolkit	Add support for dev-python/prompt-toolkit
ptpython	Add support for dev-python/ptpython

python-socketio

Flag	Description
asyncio-client	Add async websocket client

pyvisa-py

Flag	Description
serial	Enable serial port communication via <pkg>dev-python/pyserial</pkg>

dev-util

buildbox

Flag	Description
casd	Add support and tools for accessing cache from CAS
oci	Enable OCI container support
recc	Build the recc compiler cache tool

catalyst-lab

Flag	Description
binhost	Binhost targets support to build selected packages.
qemu	Building stages for different architecture using QEMU.

distribution-gpg-keys

Flag	Description
copr	Install GPG keys used by Copr projects

flips

Flag	Description
divsuf	Uses the more performant <pkg>dev-libs/libdivsufsort</pkg> instead of a bundled modified copy of yuta256's sais algorithm.

gammaray

Flag	Description
3d	Build support for Qt 3D modules
designer	Widget .ui file export
kjob	KJob tracker plug-in
scxml	Build support for Qt State Chart XML (SCXML)
webengine	Enable support for dev-qt/qtwebengine

lua-language-server

Flag	Description
llvm-libunwind

ols

Flag	Description
odinfmt	Install formatter

rust-rover

Flag	Description
bundled-jdk	Use bundled jdk
nvidia	Apply markdown preview patch for Nvidia cards

rz-ghidra

Flag	Description
cutter-plugin	Build as dev-util/cutter's plugin

stylua

Flag	Description
lua52	Build support for Lua 5.2
lua53	Build support for Lua 5.3
lua54	Build support for Lua 5.4
luajit	Build support for LuaJIT
luau	Build support for Luau

tinyxxd

Flag	Description
xxd	use it as a replacement for xxd

u-config

Flag	Description
symlink	Install pkg-config and pkgconf symlink

vala-language-server

Flag	Description
debug-mem	Debug memory usage

dev-vcs

got

Flag	Description
cvg	EXPERIMENTAL: build cvg - cvs-like-git

games-action

ddnet

Flag	Description
antibot	Enable support for a dynamic anticheat library.
download-gtest	Download and compile GTest. Useful if GTest is not installed and there is no suitable package providing it.
headless-client	Build the client without graphics.
inform-update	Inform about available updates.
videorecorder	Add video recording support using FFmpeg to the client.
websockets	Enable WebSocket support for server.

games-arcade

taisei

Flag	Description
mimalloc	Use mimalloc allocator via <pkg>dev-libs/mimalloc</pkg>
zip	Enable loading of game data from ZIP packages via <pkg>dev-libs/libzip</pkg>

tetrio-desktop

Flag	Description
tetrio-plus	Install with TETR.IO PLUS modification

games-board

fairy-stockfish

Flag	Description
cpu_flags_arm_v7
cpu_flags_x86_popcnt
cpu_flags_x86_sse
general-32	Generic unoptimized 32-bits build
general-64	Generic unoptimized 64-bits build
largeboards	Support for board sizes more than 8x8 (e.g., Xiangqi, Shogi). Engine is slower
nnue	Embed and enable NNUE support (built-in for Xiangqi and Janggi, executable file is larger)

games-emulation

RetroArch

Flag	Description
7zip	Compile in 7z support
amd64
cg	Cg shader support
cheevos	Retro Achievements
cpu_flags_arm_vfp
dispmanx	Dispmanx video support
filters	Install audio/video filters
gles3	OpenGLES3 support
hid	Low-level HID (Human Interface Device) support
kms	KMS context support
libass	SSA/ASS for FFmpeg subtitle support
libusb	Libusb HID support
materialui	MaterialUI menu
ozone	Ozone menu
rgui	RGUI menu
v4l2	Video4linux2 support
videocore	Broadcom Videocore 4 support
xinerama	Xinerama support
xmb	XMB menu
xv	XVideo support

azahar

Flag	Description
cpu_flags_x86_sse4_2

dosbox-x

Flag	Description
fluidsynth	Enable FluidSynth to be used as the MIDI synthesizer
slirp	Enable the SLIRP back-end for network adapter emulation

eden

Flag	Description
camera	Enable camera support through dev-qt/qtmultimedia
cubeb	Enable the cubeb audio backend
room	Compile the dedicated room executable
web-applet	Enable the custom web applet frontend through dev-qt/qtwebengine
web-service	Enable multiplayer support

libretro-dolphin

Flag	Description
log	Increase logging output

rpcs3

Flag	Description
faudio	Add faudio sound backend support

games-engines

instead

Flag	Description
iconv

ponscripter-fork

Flag	Description
mpeg

system3-sdl2

Flag	Description
rtmidi	Enable real-time MIDI support via rtmidi library

games-fps

etlegacy

Flag	Description
dedicated
freetype	Enable freetype
gettext	Enable gettext
irc	Enable built-in IRC client
omnibot	Built with Omnibot
renderer-gles	Enable renderer-gles
renderer2	Enable renderer2

quakespasm

Flag	Description
mikmod
modplug

games-roguelike

cataclysm-dda

Flag	Description
\
soundpack	Install complete soundpack (as opposed to only menu sounds)
tiles	Build graphical (tiles) variant

games-rpg

open-adventure

Flag	Description
autosave	Build with auto-save/resume enabled
nosave	Build with save/resume disabled

games-strategy

7k-ambition

Flag	Description
multiplayer	Enable multiplayer.

games-util

itch-bin

Flag	Description
system-ffmpeg	Use the system-wide <pkg>media-video/ffmpeg</pkg> instead of bundled.

legendary

Flag	Description
webview	Use dev-python/pywebview for the sign-in process

linuxtrack-qt6-wayland

Flag	Description
winebridge	Build with Wine bridge support (for use with non-native games running under wine/proton)

mangohud

Flag	Description
mangoapp	Build and install mangoapp and mangoapp layer
mangohudctl	Build and install mangohudctl
mangoplot	Install mangoplot python script
next	Build and install server/client rewrite
xnvctrl	Use XNVctrl as fall back for older Nvidia devices.

umu-launcher

Flag	Description
delta-update	Enable delta updates

xivlauncher

Flag	Description
aria2	Enable Aria2 support.
libsecret	Enable secrets/password storage support.

gnome-extra

yad

Flag	Description
icon-browser	Construire l'explorateur d'icônes
standalone	Construire le binaire autonome (sans gsettings)

gui-apps

dankmaterialshell

Flag	Description
greeter	Install dms greeter for greetd

gtklock-extras

Flag	Description
playerctl	gtklock module adding media player controls to the lockscreen
powerbar	gtklock module adding power controls to the lockscreen
userinfo	gtklock module adding user info to the lockscreen

hyprswitch

Flag	Description
libadwaita	The gui should use libadwaita

ironbar

Flag	Description
keyboard	Enables the keyboard module
volume	Enables the volume module

nwg-launchers

Flag	Description
dmenu	Installs nwgdmenu, GTK dynamic menu windows.
grid	Installs nwggrid, a GNOME-like application grid.

openrefine

Flag	Description
commons	Download and install plugin for Wikimedia Commons

rofi-wayland

Flag	Description
drun	Desktop file mode
windowmode	Window switcher mode

sfwbar

Flag	Description
bsdctl	Enable support for BSD sysctl module. Default disabled by upstream
idleinhibit	Enable support for Idle inhibit protocol. Prevents screenlockers (e.g swaylock) from popping up by inhibiting idle mode
iwd	Enable support for the iwd wifi module
menu	Enable support for application menu generator. Default enabled by upstream
notification	Enable support for notification center and idle notifications

swaylock-effects

Flag	Description
fish-completion	Enable fish completion support

wayle

Flag	Description
settings	Build the settings GUI

wl-mirror

Flag	Description
gbm	Enable capturing with libgbm (generally more efficient).

wlogout

Flag	Description
bash-completions	Enable completions for bash shell
fish-completions	Enable completions for fish shell
zsh-completions	Enable completions for zsh shell

xremap

Flag	Description
cosmic	build client for COSMIC Wayland
pantheon	build client for Pantheon Wayland (aka Secure)
socket	build client for Variant for system service
wlroots	build client for Sway, Wayfire, etc.
x11	build client for X11

yambar

Flag	Description
backlight	Backlight support
battery	Battery support
clock	Clock support
core	Compiles modules, particles and decorations as shared libraries, which are loaded on-demand
cpu	CPU monitoring support
disk-io	Disk I/O support
foreign-toplevel	Foreign toplevel (window tracking for Wayland) support
label	Label support
memory	Memory monitoring support
removables	Removables (USB sticks, CD-ROM etc) monitoring support
river	River support
script	Script support
sway-xkb	keyboard support for Sway
xkb	keyboard support for X11
xwindow	XWindow (window tracking for X11) support

gui-libs

qdocumentview

Flag	Description
djvu
postscript

gui-wm

mangowm

Flag	Description
asan	Enable clang's Address Sanitizer functionality.

phoc

Flag	Description
dtrace	Enable profiling data capture support using <pkg>dev-debug/systemtap</pkg>
sysprof	Enable profiling data capture support using <pkg>dev-util/sysprof-capture</pkg>

swayfx

Flag	Description
swaybar	Install 'swaybar': sway's status bar component
swaynag	Install 'swaynag': shows a message with buttons
wallpapers	Install sway's default wallpaper image

media-fonts

geist-font

Flag	Description
geist	Install the standard "Geist" font
geistpixel	Install the "Geist Pixel" font variant

maple-mono

Flag	Description
cn	Install CN font for Simplified Chinese, Traditional Chinese and Japanese support
ligature	Install the font with ligature support
nerd	Install the nerd font
normal	Install the less opinionated version of the font, similar to JetBrains mono

monaspace

Flag	Description
frozen	Whether to install fonts with ligatures and texture healing turned on by default

nerdfonts

Flag	Description
0xproto	Installs 0xProto Nerd Font
3270	Installs 3270 Nerd Font
adwaitamono	Installs AdwaitaMono Nerd Font
agave	Installs Agave Nerd Font
annotationmono	Installs Annotation Mono Font
anonymouspro	Installs AnonymicePro Nerd Font
arimo	Installs Arimo Nerd Font
atkinsonhyperlegiblemono	Installs AtkynsonMono Nerd Font
aurulentsansmono	Installs AurulentSansMono Nerd Font
bigblueterminal	Installs BigBlueTerminal Nerd Font
bitstreamverasansmono	Installs BitstromWera Nerd Font
cascadiacode	Installs CaskaydiaCove Nerd Font
cascadiamono	Installs CaskaydiaMono Nerd Font
codenewroman	Installs CodeNewRoman Nerd Font
comicshannsmono	Installs ComicShannsMono Nerd Font
commitmono	Installs CommitMono Nerd Font
cousine	Installs Cousine Nerd Font
d2coding	Installs D2Coding Nerd Font
daddytimemono	Installs DaddyTimeMono Nerd Font
dejavusansmono	Installs DejaVuSansMono Nerd Font
departuremono	Installs DepartureMono Nerd Font
droidsansmono	Installs DroidSansMono Nerd Font
envycoder	Installs EnvyCodeR Nerd Font
fantasquesansmono	Installs FantasqueSansMono Nerd Font
firacode	Installs FiraCode Nerd Font
firamono	Installs FiraMono Nerd Font
gohu	Installs Gohu Nerd Font
gomono	Installs GoMono Nerd Font
googlesanscode	Installs Google Sans Code Font
hack	Installs Hack Nerd Font
hasklig	Installs Hasklug Nerd Font
heavydata	Installs HeavyDataMono Nerd Font
hermit	Installs Hurmit Nerd Font
iawriter	Installs iM-Writing Nerd Font
ibmplexmono	Installs BlexMono Nerd Font
inconsolata	Installs Inconsolata Nerd Font
inconsolatago	Installs InconsolataGo Nerd Font
inconsolatalgc	Installs Inconsolata LGC Nerd Font
intelonemono	Installs IntoneMono Nerd Font
iosevka	Installs Iosevka Nerd Font
iosevkaterm	Installs IosevkaTerm Nerd Font
iosevkatermslab	Installs IosevkaTermSlab Nerd Font
jetbrainsmono	Installs JetBrainsMono Nerd Font
lekton	Installs Lekton Nerd Font
liberationmono	Installs Literation Nerd Font
lilex	Installs Lilex Nerd Font
martianmono	Installs MartianMono Nerd Font
meslo	Installs Meslo Nerd Font
monaspace	Installs Monaspice Nerd Font
monofur	Installs Monofur Nerd Font
monoid	Installs Monoid Nerd Font
mononoki	Installs Mononoki Nerd Font
mplus	Installs M+ Nerd Font
nerdfontssymbolsonly	Installs symbols only Nerd Font
noto	Installs Noto Nerd Font
opendyslexic	Installs OpenDyslexic Nerd Font
overpass	Installs Overpass Nerd Font
profont	Installs ProFont Nerd Font
proggyclean	Installs ProggyClean Nerd Font
recursive	Installs RecMono Nerd Font
robotomono	Installs RobotoMono Nerd Font
sharetechmono	Installs ShureTechMono Nerd Font
sourcecodepro	Installs SauceCodePro Nerd Font
spacemono	Installs SpaceMono Nerd Font
terminus	Installs Terminess Nerd Font
tinos	Installs Tinos Nerd Font
ubuntu	Installs Ubuntu Nerd Font
ubuntumono	Installs UbuntuMono Nerd Font
ubuntusans	Installs UbuntuSans Nerd Font
victormono	Installs VictorMono Nerd Font
zedmono	Installs ZedMono Nerd Font

redhat

Flag	Description
${IUSE_TYPE}
redhatdisplay	Install the RedHatDisplay font
redhatmono	Install the RedHatMono font
redhattext	Install the RedHatText font
webfonts	Install web font files

source-han-serif

Flag	Description
l10n_ja
l10n_ko
l10n_zh-CN
l10n_zh-TW

media-gfx

bonzomatic

Flag	Description
system-glew	Use the systems installed version of GLEW (upstream-unsupported)
system-stb	Use the systems installed version of STB (upstream-unsupported)

czkawka

Flag	Description
krokiet	Krokiet is the new Czkawka frontend written in Slint

glslViewer

Flag	Description
xvfb	Enable support for thumbnail creation via Xvfb

nsxiv

Flag	Description
statusbar	Add statusbar support

swayimg

Flag	Description
${LUA_REQUIRED_USE}
exr	Enable support for EXR image format
gif
tiff

vpuppr

Flag	Description
ifm-tracker	Enable the iFacialMocap tracker.
meowface-tracker	Enable the MeowFace tracker.
osf-tracker	Enable the OpenSeeFace tracker.
remote-control	Enable remote controlling the program.
vts-tracker	Enable the VTubeStudio tracker.

media-libs

amdvlk

Flag	Description
raytracing	Enable Vulkan raytracing support in AMDVLK, requires dev-util/DirectXShaderCompiler to build. Disable if you have weak hardware.

blend2d

Flag	Description
jit

imgui

Flag	Description
allegro5	Enable allegro backend and renderer
glfw	Enable glfw backend
sdl2-renderer	Enable SDL2 renderer backend
sdl3	Enable SDL3 backend
sdl3-renderer	Enable SDL3 renderer backend
webgpu	Enable webgpu renderer backend

libbpg

Flag	Description
bpgview	Compile bpgview (<pkg>media-libs/libsdl</pkg> and <pkg>media-libs/sdl-image</pkg> needed)
jctvc	Enable the JCTVC code (best quality but slow) for the encoder

monado

Flag	Description
onnxruntime	Enable handtracking support via <pkg>sci-libs/onnxruntime</pkg>
psvr	Enable PSVR HMD driver
uvc	Enable libuvc video driver
vive	Enable driver for HTC Vive, Vive Pro, Valve Index, and their controllers

wivrn

Flag	Description
nvenc
wireshark-plugins	Build the <pkg>net-analyzer/wireshark</pkg> plugin for the WiVRn protocol
x264

media-plugins

clapper-enhancers

Flag	Description
control-hub	Build the Clapper Enhancer Control Hub plugin
youtube	Enable YouTube support via <pkg>net-misc/yt-dlp</pkg>

gimp-resynthesizer

Flag	Description
animate	Enable animation of the synthesis process for debugging. You may see a 'brushfire front' of pixels being synthesized. May not work with threading enabled
deep-progress	Enable detailed progress reporting (percent processed) instead of shallow progress (per pass). Useful for slow motion animation
translations	Install translation files

media-sound

fooyin

Flag	Description
gme	Build the libgme input plugin using <pkg>media-libs/game-music-emu</pkg>
openmpt	Build the OpenMPT input plugin using <pkg>media-libs/libopenmpt</pkg>
projectm	Enable the projectM visualization plugin
replaygain	Enable support for Replay Gain scanning using <pkg>media-libs/libebur128</pkg> instead of using ffmpeg
soxr	Build the SoX-based resampler plugin using <pkg>media-libs/soxr</pkg>

goxlr-utility

Flag	Description
tts	Accessibility feature adding TTS capabilities to report button presses.

jacktrip

Flag	Description
libsamplerate
rtaudio	Enable rtaudio backend
virtualstudio	Enable VirtualStudio extension

lms

Flag	Description
jukebox	Support playback in server's hardware
stb	Use <pkg>dev-libs/stb</pkg> graphic library instead of <pkg>media-gfx/graphicsmagick</pkg>

musikcube

Flag	Description
basu	Build plugin to support MPRIS using basu.
libopenmpt	Build plugin to support playing MOD music aka tracker music through libopenmpt

neocrystal

Flag	Description
rpc	Includes Discord Rich Presence support

spct

Flag	Description
libspct	Build spct as a shared library (libspct) for use in other applications.

spotify-player

Flag	Description
image	Enables basic image support for album artwork
lyrics	Enables lyrics support for playing songs
media-control	Enables media control via MPRIS DBus
streaming	Enables streaming functionality -- requires an audio backend to be set

spotifyd

Flag	Description
rodio	Enable the rodio backend for audio playback

tenacity

Flag	Description
id3tag	Enable ID3Tag support for MP3 files
lame
matroska	Enable MKA/MKV container format support
mp2	Enable MP2 codec support
sbsms	Enable SBSMS timestretching support
vamp	Enable VAMP plugin hosting support
vst2	Enable VST2 plugin hosting support

media-video

clapper

Flag	Description
discoverer	Build Clapper Discoverer feature
rawimporter	Build RAW system memory importer for clappersink

gpu-screen-recorder

Flag	Description
filecaps	Remove password prompt and improve performance

obs-multi-rtmp

Flag	Description
obs-frontend-api	Use obs-frontend-api for UI functionality.
qt	Use Qt functionality.

obs-vaapi

Flag	Description
video_cards_intel

mpv-plugin

mdmenu

Flag	Description
custom-cmd	Do not install dmenu as a dependency. This requires you to configure a custom dmenu-compatible command in the configuration.

mpv-mpris

Flag	Description
autoload	Load plugin automatically

net-analyzer

munin-contrib

Flag	Description
templates	contrib munin tools

netsniff-ng

Flag	Description
geoip

net-client

lagrange

Flag	Description
bidi

net-dns

AdGuardHome

Flag	Description
web	Enables web user interface (UI)

net-im

abaddon

Flag	Description
rnnoise	Support for noise reduction using media-libs/rnnoise

chatterino

Flag	Description
qtkeychain	Enable qtkeychain support to secure passwords

conduit

Flag	Description
rocksdb	Add support for RocksDB; a key/value, LSM database
system-rocksdb	Use the system-wide <pkg>dev-libs/rocksdb</pkg> installation

element-desktop

Flag	Description
keyring

forkgram

Flag	Description
enchant	Use app-text/enchant spell-checking backend instead of app-text/hunspell
fonts	Use built-in patched copy of open-sans fonts (overrides fontconfig)
libdispatch	Use dev-libs/libdispatch for better thread pool performance

gajim-plugins

Flag	Description
$(printf
${MY_PLUGINS[@]})
'
'+%s
acronyms_expander	Plugin: Replaces acronyms (or other strings) with given expansions/substitutes
anti_spam	Plugin: Block some incoming messages
clients_icons	Plugin: Shows the client icons in the roster and in groupchats
length_notifier	Plugin: Notifies you when message length reaches a limit
message_box_size	Plugin: Allows you to adjust the height of the new message input field
now_listen	Plugin: Copy tune info to conversation input box
openpgp	Plugin: Encrypt your messages with OpenPGP (XEP-0373)
pgp	Plugin: Encrypt your messages with PGP (XEP-0027)
plugins_translations	Plugin: Translation files for Gajim Plugins
quick_replies	Plugin: Quick replies
triggers	Plugin: Configure Gajim's behaviour when receiving messages/events

nheko

Flag	Description
voip	Enable audio calls

tuwunel

Flag	Description
io-uring
ldap

net-irc

halloy

Flag	Description
tor	Enable embedded Tor network support via Arti

pounce

Flag	Description
palaver	Provide push notifications for the Palaver IRC app

zoitechat

Flag	Description
libcanberra	Enable sound event support using <pkg>media-libs/libcanberra-gtk3</pkg>
perl-legacy	Allows legacy HexChat scripts to work with ZoiteChat
plugin-checksum	Build Checksum plugin (needs plugins)
plugin-fishlim	Build FiSHLiM plugin (needs plugins)
plugin-sysinfo	Build SysInfo plugin (needs plugins)
trayicon	Enable system tray icon

net-libs

ixwebsocket

Flag	Description
ws	Build the ws utility

picotls

Flag	Description
"(
(
)
)"
aes
avx2
fusion	"fusion" AES-GCM engine, optimized for QUIC and other protocols that use short AEAD blocks
pclmul

syndication-domination

Flag	Description
json-binary	Builds a binary executable instead of python bindings

ulfius

Flag	Description
jansson	Jansson support for JSON
websocket	websocket support

usockets

Flag	Description
asio	Enable bindings to use the boost asio dispatcher
libuv	Enable bindings to use the libuv dispatcher

net-mail

dovecot-fts-flatcurve

Flag	Description
textcat	Add libtextcat language guessing support for full text search (FTS)

net-misc

iipsrv

Flag	Description
apache2	Add Apache mox_proxy_fcgi config file
lighttpd	Add Lighttpd config file
memcached

megasync

Flag	Description
dolphin	Build a plugin for Dolphin
mediainfo	Use <pkg>media-libs/libmediainfo</pkg> to determine media properties
nautilus	Build a plugin for nautilus
nemo	Build a plugin for Nemo
thumbnail	Enable support for thumbnail generation
thunar	Build a plugin for Thunar

xmrig-mo

Flag	Description
donate	Set the default donation level to 1% instead of 0
hwloc	Use <pkg>sys-apps/hwloc</pkg> for CPU affinity support

net-nntp

inn

Flag	Description
cancel-locks	Enable Cancel-Lock header functionality
low-memory	Use tagged hash table for history to reduce memory footprint
sasl

net-p2p

dogecoin-qt

Flag	Description
dogecoind	Build with dogecoind daemon
intel-avx2	Build with intel avx2
prune	Enables automatic pruning of old blocks to stay below 2.2GB target size (if ran from desktop)
scrypt-sse2	Build with scrypt sse2 implementation
ssp	Apply stack protector to all functions, for extra security
tests	Build Dogecoin Core Qt with tests option
utils	Build with client utilities dogecoin-cli and dogecoin-tx
wallet	Build Dogecoin Core Qt with wallet
zmq	Enables ZeroMQ notifications

feather

Flag	Description
bounties	Enable bounties page plugin
calc	Enable price calculator page plugin
crowdfunding	Enable crowdfunding page plugin
home	Enable home page plugin
revuo	Enable revuo plugin
tickers	Enable price tickers plugin
xmrig	Enable mining support using a user specified xmrig binary

gridcoin

Flag	Description
asm
cpu_flags_x86_sha

monero

Flag	Description
hw-wallet	Enable Trezor hardware wallet support

syncthingtray

Flag	Description
kio	Enable file item action plugin in <pkg>kde-apps/dolphin</pkg>
plasmoid	Enable plasmoid for KDE Plasma

net-print

hpuld

Flag	Description
scanner	Enable scanner on multifunction devices which support it

net-voip

baresip

Flag	Description
aac
acip	Audio Contribution over IP compatibility module
amr	Enables Adaptive Multi-Rate Audio support
aom	av1 module
aptx	Audio Processing Technology codec (aptX)
codec2	CODEC2 low-bitrate speech audio codec
console	UDP/TCP console UI driver
echo	Echo server module
httpd	HTTP webserver UI-module
httpreq	HTTP request module
mpa	MPA Speech and Audio Codec
serreg	Serial registration module
snapshot	Save video-stream as PNG images
spandsp	G.722 and G.726 audio codecs via <pkg>media-libs/spandsp</pkg>
tcpcontrol	TCP control interface using JSON payload
v4l	Video4Linux2 video source
vpx	Enables VP8 and VP9 codec support using libvpx
webrtc	Use <pkg>media-plugins/gst-plugins-webrtc</pkg> for webrtc support

net-vpn

amneziawg-tools

Flag	Description
awg-quick	Install the awg-quick(8) helper tool. Most users want to use this.

fastd

Flag	Description
offload-l2tp	Offload L2TP traffic to the kernel when using the null@l2tp transport method

net-wireless

sdrpp

Flag	Description
airspy	Support for airspy hardware
airspyhf	Support for airspyhf+ hardware
bladerf	Support for bladerf hardware
hackrf	Support for HackRF hardware
hermes	Support for hermes
plutosdr	Support for plutosdr hardware
rtlsdr	Support for rtlsdr dongles
sdrplay	Support for sdrplay hardware
soapy	Support for hardware supported by SoapySDR
uhd	Support for uhd hardware

phosh-base

phosh

Flag	Description
calls	Enable calls support via <pkg>net-voip/gnome-calls</pkg>
iio	Enable support for IIO sensors via <pkg>gnome-extra/iio-sensor-proxy</pkg>
screenshot	Enable screenshot manager support via <pkg>gui-apps/slurp</pkg>

phosh-shell

Flag	Description
lockscreen-plugins	Build lockscreen plugins and widgets
test-full	Run integration tests

xdg-desktop-portal-phosh

Flag	Description
rust	Build the Rust based portal

sci-biology

cmdock

Flag	Description
apidoc	Build API documentation using <pkg>app-text/doxygen</pkg>
boinc	Use CmDock with SiDock@home BOINC project

sci-electronics

liblxi

Flag	Description
zeroconf

sby

Flag	Description
yices2	Enable Yices2 SMT solver support

surfer

Flag	Description
accesskit	Enable accessibility support via accesskit
performance-plot	Enable performance plotting with egui_plot
wasm-plugins	Enable WASM plugin support via extism

sci-libs

poselib

Flag	Description
benchmark	Build the benchmark binary.

sci-mathematics

frama-c-aorai

Flag	Description
eva	Build support for the Eva plugin

rink

Flag	Description
bundle-files	Bundles the definition files into the application. Recommended only for tests, as the definition files are installed globally.

sci-misc

stable-diffusion-cpp

Flag	Description
webm	Support the webm audiovisual media file format

sci-ml

ollama

Flag	Description
mkl	Use <pkg>sci-libs/mkl</pkg> for blas, lapack and sparse blas routines

sys-apps

bustd

Flag	Description
glob	Enable excluding processes with glob patterns

coolercontrold

Flag	Description
liquidctl	Support for interacting with AIO liquid coolers and other devices with <pkg>app-misc/liquidctl</pkg>

dinit

Flag	Description
cgroups	Enable cgroups support
sysv-utils	Install sysvinit compatibility symlinks for halt, init, poweroff, reboot and shutdown

dinit-services

Flag	Description
cryptsetup	Enable cryptsetup services
kmscon	Use kmscon instead of getty for tty

dnf5

Flag	Description
appstream	Build appstream metadata plugin
manifest	Build manifest plugin

fselect

Flag	Description
users	Add support for getting system users and groups

turnstile

Flag	Description
dinit	Install Dinit-related backend and data
rundir	Enable rundir management by default
runit	Install runit-related backend and data

sys-cluster

genders

Flag	Description
cxx

sys-firmware

lenovolegionlinux

Flag	Description
downgrade-nvidia	Downgrade nvidia for 525 to enable TDP control (systemd-service)

sys-fs

dwarfs

Flag	Description
perfmon	Simple dwarfs performance monitoring. See https://github.com/mhx/dwarfs?tab=readme-ov-file#performance-monitoring . It has no impact on performance
ricepp	Enable ricepp compression algorithm, which builds on the basic idea of Rice compression (see the https://en.wikipedia.org/wiki/Golomb_coding ) with a few enhancements.
stacktrace	Enable support for debug build with stacktracing

ffmpegfs

Flag	Description
bluray	Enable support of Blu-ray
dvd

sys-kernel

uek-sources

Flag	Description
gentoo	apply base gentoo genpatches

sys-libs

cyclonedds

Flag	Description
get-kind	Apply patch for additional interface which returns type of entity
idlc	Build IDL preprocessor
parser	Regenerate parser
shm	Enable shared memory support

gcompat

Flag	Description
libucontext	Add support for ucontext functions via <pkg>sys-libs/libucontext</pkg>
obstack	Use <pkg>sys-libs/obstack-standalone</pkg> for greater compatibility

iceoryx

Flag	Description
ccache	Enable ccache support

spiral

Flag	Description
editor	Compile spiral_editor* functions
screen	Compile spiral_screen* functions
term	Compile spiral_term* functions

sys-power

fan2go

Flag	Description
nvml	Enable the NVML device discovery

linux-tools-power-x86

Flag	Description
pstate-tracer	Install utility to debug and tune the performance of the {amd,intel}_pstate drivers

rog-daemon

Flag	Description
fan-curve	Enable support for custom fan curves
mux	Enable support for MUX switch
panel-od	Enable support for Panel Overdrive

sys-process

nq

Flag	Description
shell	Use shell implementation
tq	Install tq, a tmux & screen wrapper

www-apps

forgejo

Flag	Description
acct	User and group management via acct-*/git packages

pleroma

Flag	Description
system-lexbor	Use <pkg>dev-libs/lexbor</pkg> instead of vendored version
system-vips	Use <pkg>media-libs/vips</pkg> instead of vendored version

snac

Flag	Description
mastodon	Enable Mastodon API support
sandbox	Enable experimental sandboxing through Linux Landlock

zola

Flag	Description
cjk	Enable indexing ja and zh languages

www-client

mullvad-browser

Flag	Description
eme-free	Disable EME (DRM plugin) capability at build time
gmp-autoupdate	Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles
gnome-shell	Integrate with gnome-base/gnome-shell search
hwaccel	Force-enable hardware-accelerated rendering (Mozilla bug 594876)
jumbo-build	Enable unified build - combines source files to speed up build process, but requires more memory
libproxy	Enable libproxy support
openh264	Use <pkg>media-libs/openh264</pkg> for H264 support instead of downloading binary blob from Mozilla at runtime
system-av1	Use the system-wide <pkg>media-libs/dav1d</pkg> and <pkg>media-libs/libaom</pkg> library instead of bundled
system-harfbuzz	Use the system-wide <pkg>media-libs/harfbuzz</pkg> instead of bundled and <pkg>media-gfx/graphite2</pkg> in most cases
system-icu	Use the system-wide <pkg>dev-libs/icu</pkg> instead of bundled
system-jpeg	Use the system-wide <pkg>media-libs/libjpeg-turbo</pkg> instead of bundled
system-libevent	Use the system-wide <pkg>dev-libs/libevent</pkg> instead of bundled
system-libvpx	Use the system-wide <pkg>media-libs/libvpx</pkg> instead of bundled
system-pipewire	Use system <pkg>media-video/pipewire</pkg> for WebRTC and screencast instead of bundled one
system-png	Use the system-wide <pkg>media-libs/libpng</pkg> instead of bundled (requires APNG patches)
system-webp	Use the system-wide <pkg>media-libs/libwebp</pkg> instead of bundled
valgrind
wasm-sandbox	Sandbox certain third-party libraries through WebAssembly using RLBox

www-plugins

firefoxpwa

Flag	Description
custom-cflags

www-servers

hinsightd

Flag	Description
cgi	Enable old/slow cgi support (legacy should not be used)
fcgi	Enable fast cgi support
ffcall	Use ffcall library for better logging format support
rproxy	Enable reverse proxying support

x11-apps

lightdm-gtk-greeter-settings

Flag	Description
xfce	Adds <pkg>x11-apps/lightdm-gtk-greeter-settings</pkg> to Xfce settings manager

x11-libs

gtk-fortran

Flag	Description
high-level	Build high-level interface to the gtk-fortran package
plplot	Build with <pkg>sci-libs/plplot</pkg> support

sdl-fakeqwerty

Flag	Description
xlib	Enable support for libX11

x11-misc

i3status-rust

Flag	Description
notmuch	Enable support for the notmuch block (pulls in <pkg>net-mail/notmuch</pkg>)

picom-jonaburg

Flag	Description
config-file	Enable config file support

xsecurelock

Flag	Description
mplayer	Install the saver_mplayer module
mpv	Install the saver_mpv module
xscreensaver	Install the saver_xscreensaver module

x11-wm

leftwm

Flag	Description
lefthk	Use LeftHK hotkey daemon
x11rb	Enable x11rb backend

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