Global USE flags

Flag Description Packages
asan Enable address sanatization 2
debug 7
doc 2
flac 3
non-free Install none free parts that are required for certain UI tasks 2
system-freetype Dynamic link system freetype 2
test 4
tools Build modding tools 2

Category USE flags

games-fps

Flag Description Packages
client Build playable game executable - disable for server installation 2
fluidsynth Enable support for MIDI via media-sound/fluidsynth 2
mad 3
mikmod 2
modplug 2
mpg123 Enable support for MPEG audio playback via media-sound/mpg123 2
opengl Build with OpenGL support (Recommended) 2
opus 3
pch 2
server Add multiplayer support 2
system-zlib Use system zlib instead of bundled 2
tremor Enable tremor audio codec for vorbis files 2
umx Enable support for tracker music via media-libs/libumx 2
vorbis 4
wav Enable wav audio codec for wavetable files 2
xmp Add libxmp support for playing of Soundtracker-style music files 3

Local USE flags

app-emulation

freej2me-plus

Flag Description
libretro Build Libretro Core

app-misc

font-manager

Flag Description
apparmor
gnome
google-fonts Google Fonts integration
manager Build Font Manager
nautilus Build Nautilus extension
nemo Build Nemo extension
nls
reproducible Make the build reproducible
thunar Build Thunar extension
unihan Install Unihan data
viewer Build Font Viewer

dev-games

brender

Flag Description
drivers Compile different render backends

games-action

dethrace

Flag Description
bugs Keep bugs from the original game intact.

openlara

Flag Description
sdl

games-arcade

cambridge

Flag Description
discord Install discord integration

games-fps

Doom64EX-Plus

Flag Description
man

crl

Flag Description
lto
net Enable support for network play
sdl2-mixer Enable support for Sound/MIDI via media-libs/sdl2-mixer

dhewm3

Flag Description
base Add support for the Doom 3 base game
d3xp Add support for Doom 3: Resurrection of Evil expansion
dedicated
imgui Build with Dear ImGui integration

dsda-doom

Flag Description
portmidi Enable support for MIDI via <pkg>media-libs/portmidi</pkg>
sdl2-image Enable support for high-resolution texture support via <pkg>media-libs/sdl2-image</pkg>

iortcw

Flag Description
bloom Add support for bloom post-processing
freetype Add support for truetype
mumble Add support for voip using mumble via <pkg>net-voip/mumble</pkg>
openal
starter Install script to launch the game easier via <pkg>sys-fs/unionfs-fuse</pkg>
system-jpeg Use system jpeg library instead of bundled
system-ogg Use system ogg library instead of bundled
system-opus Use system opus library instead of bundled
system-vorbis Use system vorbis library instead of bundled
voip Add in-game voip support
xdg Use XDG complient folder structure
yacc Use yacc to update code/tools/lcc/lburg/gram.c (Not Recommended)

nblood

Flag Description
asm
clang Use clang as compiler
etekwar Build etekwar for playing Shatner's TekWar
ewitchaven Build ewitchaven for playing Witchaven I and II
force-short-tool-names Omit "nblood-" prefix from tools
gtk Build gtk launcher for nblood, pcexhumed and rednukem
nblood Build nblood for playing Blood
pcexhumed Build pcexhumed for playing Exhumed
rednukem Build rednukem for playing various Build Engine games (e.g. Duke3D)
voidsw Build voidsw for playing Shadow Warrior (Classic)
vpx

rbdoom3-bfg

Flag Description
classic Build with The Ultimate DOOM and DOOM 2
ffmpeg
prebaked Add prebaked global illumination data (Recommended)
rbdmap Install the DOOM-3-BFG map compiler
shadermake Install internal shader tool (Only good for debugging)
standalone Skip DOOM-3-BFG base/ folder and use content/ instead
system-rapidjson Use the system rapidjson instead of the bundled one

uhexen2

Flag Description
alsa
demo Build Hexen 2 demo version
oss
soft Enable support for software rendering
timidity
utils Build Hexen 2 utils for modding and working with data files
wildmidi Enable support for MIDI files via media-libs/wildmidi
world Build Hexenworld executables

games-puzzle

openblok

Flag Description
jpeg
mod Add support for SoundTracker-style music files
mp3

gui-apps

coppwr

Flag Description
desktop-portal Build <pkg>sys-apps/xdg-desktop-portal</pkg> support
persistence Build with persistent window state bewteen launches

media-fonts

powerline-fonts

Flag Description
(
)
3270 Install Powerline-patched 3270 fonts
anonymouspro Install Powerline-patched Anonymous Pro fonts
arimo Install Powerline-patched Arimo fonts
bdf Install bitmap fonts in outdated Glyph Bitmap Distribution Format
cousine Install Powerline-patched Cousine fonts
cpmono Install Powerline-patched CPMono fonts
d2coding Install D2Coding fonts
dejavusansmono Install Powerline-patched DejaVu Sans Mono fonts
droidsansmono Install Powerline-patched Droid Sans Mono fonts
droidsansmonodotted Install Powerline-patched Droid Sans Mono Dotted fonts
droidsansmonoslashed Install Powerline-patched Droid Sans Mono Slashed fonts
firamono Install Powerline-patched Fira Mono fonts
gomono Install Powerline-patched Go Mono fonts
hack Install Powerline-patched Hack fonts
inconsolata Install Powerline-patched Inconsolata fonts
inconsolata-g Install Powerline-patched Inconsolata-g fonts
inconsolatadz Install Powerline-patched Inconsolata-dz fonts
liberationmono Install Powerline-patched Liberation Mono fonts
meslodotted Install Powerline-patched Meslo Dotted fonts
mesloslashed Install Powerline-patched Meslo Slashed fonts
monofur Install Powerline-patched Monofur fonts
notomono Install Powerline-patched Noto Mono fonts
novamono Install Powerline-patched Nova Mono fonts
pcf Install bitmap fonts in Portable Compiled Format
profont Install Powerline-patched ProFont fonts
psf Install bitmap fonts as PC Screen Font (for low level use)
robotomono Install Powerline-patched Roboto Mono fonts
sourcecodepro Install Powerline-patched Source Code Pro fonts
spacemono Install Powerline-patched Space Mono fonts
symbolneu Install Powerline-patched Symbol Neu fonts
terminus Install Powerline-patched Terminus fonts
tinos Install Powerline-patched Tinos fonts
ubuntumono Install Powerline-patched Ubuntu Mono fonts

media-libs

libSDL2pp

Flag Description
image Add support for <pkg>media-libs/sdl2-image</pkg>
mixer Add support for <pkg>media-libs/sdl2-mixer</pkg>
static-libs
ttf Add support for <pkg>media-libs/sdl2-ttf</pkg>

libinstpatch

Flag Description
shared Build as a shared library