# cat /etc/portage/package.use 
app-admin/eselect-php fpm
app-arch/p7zip rar
app-crypt/mit-krb5 -pkinit
#app-emulation/emul-linux-x86-baselibs development
app-emulation/virtualbox qt extensions addons vnc
app-text/poppler cairo
dev-cpp/glog gflags
dev-lang/php pdo sqlite3 curl xmlwriter gd fpm mysqlnd mysqli postgres xsl zip mysql
dev-libs/elfutils static-libs
dev-libs/openssl rfc3379
dev-java/swing-layout source
dev-php/xdebug php5-4
dev-vcs/subversion java -dso
dev-java/icedtea-bin -cups -X
dev-python/django mysql postgres
dev-qt/qtgui egl
dev-qt/qtopengl egl
dev-util/eclipse-sdk -gnome source
dev-util/netbeans php webcommon
games-strategy/hedgewars -mp3
media-gfx/geeqie exif
media-libs/devil mng
media-libs/harfbuzz icu
media-libs/libsdl abi_x86_32 -static-libs
media-libs/mlt xml gtk melt frei0r
media-libs/mesa gles2 gbm
media-libs/sdl-mixer mad smpeg midi mikmod mod timidity playtools
media-sound/deadbeef alac ape converter curl ffmpeg m3u midi mms musepack notify wavpack zip
media-sound/sox encode
media-video/vlc dirac dts dvb dvd oss png speex svg theora vorbis wma-fixed
media-video/ffmpeg opus
net-im/pidgin gnutls
net-im/qutim jabber oscar aspell multimedia otr irc mrim
net-im/qutim oscar jabber
net-irc/kvirc -dcc_voice -theora -phonon
net-dns/avahi autoipd
net-misc/remmina freerdp ssh
net-analyzer/wireshark -gtk2 -gtk3 qt4
sci-geosciences/qlandkartegt exif gps
sci-libs/gdal -pdf
sys-boot/grub truetype
#xfce-base/thunar -udev

>=virtual/ffmpeg-9-r1 threads
=media-video/libav-9.14 threads