Old flag -- USE=cxx from now on
Name Category Description
beecrypt dev-libs General-purpose cryptography library
boehm-gc dev-libs The Boehm-Demers-Weiser conservative garbage collector
db sys-libs Oracle Berkeley DB
gcc sys-devel The GNU Compiler Collection
gcc-apple sys-devel Apple branch of the GNU Compiler Collection, Developer Tools 4.0
gettext sys-devel GNU locale utilities
gmp dev-libs Library for arbitrary-precision arithmetic on different type of numbers
imagemagick media-gfx A collection of tools and libraries for many image formats
libcaca media-libs A library that creates colored ASCII-art graphics
libusb dev-libs Userspace access to USB devices
ncurses sys-libs console display library

Thank you!