Global USE flags

Flag	Description	Packages
btrfs	Support for BTRFS snapshot driver	4
curl		2
doc		2
fuse	Enables fuse dependencies (fuse-overlayfs is especially useful for rootless mode).	3
java		4
libav		2
readline		2
static		2
static-libs		2
test		119
zlib		2

Category USE flags

app-containers

Flag	Description	Packages
apparmor		2
device-mapper	Support for device mapper snapshot driver	2
hardened		2
seccomp		2
selinux		3
systemd		2

dev-util

Flag	Description	Packages
jbr11	Install and use the Java 11 based version of JetBrains Runtime.	2

Local USE flags

app-admin

terraform-provider-libvirt

Flag	Description
libvirt	Builds the terraform provider for libvirt

app-benchmarks

phoronix-test-suite

Flag	Description
sdl

app-containers

containerd

Flag	Description
cri	Support for Kubernetes CRI

cri-o

Flag	Description
zfs	Enables dependencies for the "zfs" file system.

podman

Flag	Description
cgroup-hybrid	Use legacy (hybrid) cgroups instead of modern (unified) cgroups
init	Enables catatonit dependency required for podman run --init.
rootless	Enables dependencies for running in rootless mode.
wrapper	Install wrapper which lets use podman for command `docker`

app-crypt

pesign

Flag	Description
libressl

app-editors

visual-studio-code

Flag	Description
global-menu
libsecret
qt5

app-office

openoffice-bin

Flag	Description
gnome
l10n_

dev-java

sbt

Flag	Description
binary	Install from (Gentoo-compiled) binary instead of building from sources. Set this when you run out of memory during build.

dev-ml

camomile

Flag	Description
ocamlopt

dev-util

idea-ultimate

Flag	Description
custom-jdk	Install and use IntelliJ's custom JRE.
jbr8	Install and use the Java 8 based version of JetBrains Runtime.

rubymine

Flag	Description
jbr17

media-video

dvdstyler

Flag	Description
debug
udev

net-misc

megasync

Flag	Description
cryptopp	Compile with Crypto++ Library.
dolphin	Upload your files to your Mega account from Dolphin file manager.
examples
freeimage	Use freeimage to manage graphic images format.
nautilus	Upload your files to your Mega account from nautilus.
php
python
sqlite
threads
thunar	Upload your files to your Mega account from Thunar.

sci-mathematics

octave

Flag	Description
X
fftw
glpk	Add support for <pkg>sci-mathematics/glpk</pkg> for linear programming
gnuplot
gui
hdf5
opengl
portaudio
postscript
qhull	Add support for <pkg>media-libs/qhull</pkg>, to allow `delaunay', `convhull', and related functions
qrupdate	Add support for <pkg>sci-libs/qrupdate</pkg>for QR and Cholesky update functions
sndfile
sparse	Add enhanced support for sparse matrix algebra with SuiteSparse
ssl
sundials	Enable the ode15i and ode15s ODE solvers using <pkg>sci-libs/sundials</pkg>

sys-block

partclone

Flag	Description
apfs	Compile partclone apfs tool
e2fs	Compile partclone e2fs tool
exfat	Compile partclone exfat tool
f2fs	Compile partclone f2fs tool
fat	Compile partclone fat tool
hfs	Compile partclone hfs tool
jfs	Compile partclone jfs tool
minix	Compile partclone minix tool
ncurses
nilfs2	Compile partclone nilfs2 tool
ntfs	Compile partclone ntfs tool
reiser4	Compile partclone reiser4 tool
reiserfs	Compile partclone reiserfs tool
ufs	Compile partclone ufs tool
vmfs	Compile partclone vmfs tool
xfs	Compile partclone xfs tool

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