Mine

Portage 2.1.5_rc2 (default-linux/amd64/2007.0, gcc-4.2.3, glibc-2.7-r2, 2.6.22-gentoo-r6 x86_64)
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System uname: 2.6.22-gentoo-r6 x86_64 Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz
Timestamp of tree: Sun, 06 Apr 2008 19:00:01 +0000
app-shells/bash:     3.2_p33
dev-lang/python:     2.5.1-r5
sys-apps/baselayout: 1.12.12
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r1
sys-devel/automake:  1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.24
ACCEPT_KEYWORDS="amd64 ~amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=nocona -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-march=nocona -O2 -pipe"
DISTDIR="/mnt/distfiles/"
FEATURES="ccache metadata-transfer parallel-fetch sandbox sfperms strict unmerge-orphans userfetch userpriv usersandbox"
GENTOO_MIRRORS="http://gentoo.supp.name/ http://ftp.sh.cvut.cz/MIRRORS/gentoo/"
LANG="cs_CZ.utf8"
LC_ALL="cs_CZ.utf8"
LDFLAGS=""
LINGUAS="cs"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
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="/mnt/storage/1/portage_tmpdir/"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/layman/sunrise /usr/portage/local/layman/enlightenment /usr/portage/local/layman/pro-audio /usr/portage/local/layman/zugaina /usr/portage/local/layman/roslin /usr/portage/local/layman/berkano /home/helb/overlay"
SYNC="rsync://magpie/gentoo-portage"
USE="X acl alsa amd64 bash-completion berkdb bluetooth branding cli cracklib crypt cups djvu dri dvd flac fortran gdbm gif gpm hal iconv isdnlog jpeg kde midi mmx mp3 mplayer mudflap ncurses nls nptl nptlonly ogg opengl openmp pam pcre pdf perl png pppd python readline reflection session smp spl sse sse2 ssl svg tcpd theora tiff truetype type1 unicode vim-syntax vorbis xcomposite xft xorg 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 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" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="cs" USERLAND="GNU" VIDEO_CARDS="nvidia"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS