emerge --info

$ emerge --info
Portage 2.1.9.50 (default/linux/amd64/10.0/desktop/gnome, gcc-4.5.2, glibc-2.13-r2, 2.6.39-gentoo-crhan x86_64)
=================================================================
System uname: Linux-2.6.39-gentoo-crhan-x86_64-Intel-R-_Core-TM-_i7_CPU_L_620_@_2.00GHz-with-gentoo-2.0.2
Timestamp of tree: Wed, 01 Jun 2011 03:15:01 +0000
ccache version 3.1.5 [enabled]
app-shells/bash:          4.2_p10
dev-java/java-config:     2.1.11-r3
dev-lang/python:          2.7.1-r1, 3.2
dev-util/ccache:          3.1.5
dev-util/cmake:           2.8.4-r1
sys-apps/baselayout:      2.0.2
sys-apps/openrc:          0.8.2-r1
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.10.3, 1.11.1-r1
sys-devel/binutils:       2.21
sys-devel/gcc:            4.5.2
sys-devel/gcc-config:     1.4.1-r1
sys-devel/libtool:        2.4-r1
sys-devel/make:           3.82
sys-kernel/linux-headers: 2.6.38 (virtual/os-headers)
sys-libs/glibc:           2.13-r2
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.0/conf /usr/share/openvpn/easy-rsa /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/rc.d /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/wget"
CXXFLAGS="-march=native -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests binpkg-logs ccache distlocks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS=""
GENTOO_MIRRORS="http://mirror.zjut.com/gentoo/ http://mirrors.163.com/gentoo/ http://mirrors.sohu.com/gentoo/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="en_US zh zh_CN en"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/var/lib/layman/gentoo-china /var/lib/layman/gnome /var/lib/layman/gentoo-taiwan /var/lib/layman/bitcoin /var/lib/layman/systemd /var/lib/layman/dustin /var/lib/layman/sunrise"
SYNC="rsync://mirrors.163.com/gentoo-portage"
USE="X a52 aac acl acpi alsa amd64 apm bash-completion berkdb bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt crytp cscope cups cxx dbus dri dts dvd dvdr eds emboss encode evo exif fam fcitx firefox flac fortran gd gdbm gdu gif gnome gnome-keyring gpm gstreamer gtk gtk3 ibus iconv java jpeg lcms ldap libnotify lm_sensors lvm mad mmx mng modules mp3 mp4 mpeg mudflap multilib nautilus ncurses networkmanager nls nptl nptlonly nsplugin ogg opengl openmp pam pango pcre pdf perl pmu png policykit ppds pppd python qt3support qt4 readline sdl session spell sse sse2 ssl startup-notification svg symlink sysfs tcpd thinkpad tiff truetype udev unicode usb vim vim-syntax vorbis wifi x264 xcb xml xorg xulrunner xv xvid xvmc zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="braindump flow karbon kexi kpresenter krita tables words" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev synaptics wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en_US zh zh_CN en" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="intel fbdev vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS