Global USE flags

Flag Description Packages
pam 2
sqlite 2

Local USE flags

sys-apps

busybox

Flag Description
debug
extra
livecd
make-symlinks Create all the appropriate symlinks in /bin and /sbin.
math Enable math support in gawk (requires libm)
mdev Create the appropriate symlink in /sbin and install mdev.conf and support files
selinux
sep-usr Support a separate /usr without needing an initramfs by booting with init=/ginit
static Make the system rescue shell (/bin/bb) static so you can recover even when glibc is broken
syslog
systemd Support systemd

sys-cluster

csync2

Flag Description
mysql
postgres
ssl
xinetd

www-apps

gitea

Flag Description
acct User and group management via acct-*/git packages
gogit (EXPERIMENTAL) Use go-git variants of Git commands.
pie