Mine

CFLAGS="-O2 -march=athlon-xp -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"

USE="3dnow 3dnowext aac aim bash-completion bzip2 cdr css dba dvd dvdr \
     dvdread fam ffmpeg firefox flac gimp glitz gs ithreads java \
     kdeenablefinal mmx mmxext mplayer nfsv4 nptlonly nsplugin nvidia qt \
     real reiser4 samba sse suspend2 theora tidy tiff unicode userlocales \
     v4l visualization vrl2 win32codecs wxwindows xcomposite xine xinerama \
     xprint xvid -apache2 -arts -esd -gnome -oss"

PORTDIR_OVERLAY="/usr/local/portage /usr/local/overlays/xgl-coffee /usr/local/overlays/bmg-main"
ACCEPT_KEYWORDS="~x86"

PORT_LOGDIR="/var/log/portage"

INPUT_DEVICES="keyboard mouse"
VIDEO_CARDS="nvidia vesa"

I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS=1

EMERGE_DEFAULT_OPTS="--nospinner"
MAKEOPTS="-j2"
CCACHE_SIZE="2G"
FEATURES="ccache confcache parallel-fetch"

SEARCH_DIRS_MASK="/usr/lib/azureus /usr/lib/openoffice"