wvstreams

USE флаги

• boost - Use dev-libs/boost to provide TR1-compatible functional interface. This USE flag is only needed with GCC earlier than version 4.1, or with other compilares not providing said interface.
• dbus - Enable dbus support for anything that needs it (gpsd, gnomemeeting, etc)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• pam - Add support for PAM (Pluggable Authentication Modules) - DANGEROUS to arbitrarily flip