net-misc/unison
Two-way cross-platform file synchronizer
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
doc
Global: Adds extra documentation (API, Javadoc, etc)
gtk
Global: Adds support for x11-libs/gtk+ (The GIMP Toolkit)
+ocamlopt
* This flag is undocumented *
threads
Global: Adds threads support for various packages. Usually pthreads