Global USE flags

Flag	Description	Packages
debug		2
doc		4
examples		3
test		4

Category USE flags

net-analyzer

Flag	Description	Packages
ldap		2
server	Enable zabbix server	2

Local USE flags

app-emulation

grub-xen-host

Flag	Description
pvh	Build an additional grub bin for pvh.

app-shells

oil

Flag	Description
readline

app-text

pdfgrep

Flag	Description
pcre
unac	Removing accents and ligatures before search

dev-lang

cilk

Flag	Description
static-libs

dev-util

trace-cmd

Flag	Description
python

media-gfx

gpick

Flag	Description
gtk3	Build for GTK3 instead of GTK2
nls

net-analyzer

crowdsec

Flag	Description
cron	Uses <pkg>virtual/cron</pkg> for periodic jobs

gsad

Flag	Description
extras	Pdf results, extra fonts, html docs support

gvm

Flag	Description
cli	Command Line Interface for OpenVAS Scanner
gsa	Greenbone Security Assistant (WebUI)
ospd	Enable support for scanner wrappers
radius

zabbix

Flag	Description
agent	Enable zabbix agent (for to-be-monitored machines)
agent2	Enable go-based zabbix agent 2 (for to-be-monitored machines)
curl
frontend	Enable zabbix web frontend
gnutls
ipv6	Turn on support of IPv6
java	Enable Zabbix Java JMX Management Gateway
libxml2	Use libxml2 client library
mysql
odbc	Enable Database Monitor and use UnixODBC Library by default
openipmi	Enable openipmi things
openssl	Use dev-libs/openssl as TLS backend
oracle
pcre2	Use dev-libs/libpcre2 instead of dev-libs/libpcre
postgres
proxy	Enable proxy support
snmp
sqlite
ssh	SSH v2 based checks
ssl
static	Build statically linked binaries

sys-fs

bcachefs-tools

Flag	Description
fuse	Enable bcachefs FUSE support (experimental!)
llvm-libunwind
verify-sig

sys-kernel

system-config

Flag	Description
ioscheduler	Install IO scehduler rules (BFQ for HDD/SSD, None for NVMe)

x11-libs

gtkdatabox

Flag	Description
glade	Build with libglade and glade-3 supports, which includes a glade's module for GtkDataBox widget

---