dev-util/cdecl
Composing and deciphering C (or C++) declarations or casts, aka "gibberish."
USE Flags
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml
readline
Global: Enables support for libreadline, a GNU line-editing library that almost everyone wants
ncurses
Global: Adds ncurses support (console display library)