This is the result of emerge --info on my system.

emerge-info.txt (text/plain), 3.49 KB, created by Alex Funk on 2010-02-25 21:16:00 UTC

Portage 2.1.7.16 (default/linux/x86/10.0, gcc-4.3.4, glibc-2.10.1-r1, 2.6.31-gentoo-r6 i686)
=================================================================
System uname: Linux-2.6.31-gentoo-r6-i686-Intel-R-_Core-TM-2_Duo_CPU_P8600_@_2.40GHz-with-gentoo-1.12.13
Timestamp of tree: Thu, 25 Feb 2010 08:45:01 +0000
distcc 3.1 i686-pc-linux-gnu [enabled]
app-shells/bash:     4.0_p35
dev-java/java-config: 2.1.10
dev-lang/python:     2.6.4
dev-python/pycrypto: 2.1.0_beta1
dev-util/cmake:      2.6.4-r3
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.13, 2.63-r1
sys-devel/automake:  1.9.6-r2, 1.10.3, 1.11.1
sys-devel/binutils:  2.18-r3
sys-devel/gcc:       4.3.4
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=nocona -pipe -fomit-frame-pointer -msse3 -msse4.1 -mfpmath=sse"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/X11/xkb /usr/share/config /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=nocona -pipe -fomit-frame-pointer -msse3 -msse4.1 -mfpmath=sse"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distcc distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LC_ALL="en_US"
LDFLAGS="-Wl,-O1"
LINGUAS="en en_US"
MAKEOPTS="-j8"
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="/usr/local/portage/layman/sunrise /usr/local/portage/layman/voyageur /usr/local/portage/layman/java-overlay /usr/local/portage"
SYNC="rsync://sparky.visionshareinc.com/gentoo-portage/"
USE="3dnow X acl acpi alsa avahi bash-completion berkdb bzip2 cdr cli cracklib crypt cups cxx dbus dri dvdr flac fortran gdbm gif gnome gnome-keyring gpm gtk hal iconv jpeg libnotify lm_sensors mmx modules mudflap ncurses nls nptl nptlonly nvidia offensive openmp pam pcre perl pmu png pppd python qt3support readline reflection session spell spl sse sse2 sse3 ssl sysfs tcpd tiff unicode vdpau vim-syntax x86 xinerama xorg zlib" ALSA_CARDS="hda-intel" 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 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse synaptics evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_US" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia" 
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS