Packages with the fltk use flag

Global definition: Add support for the Fast Light Toolkit gui interface.

app-text / htmldoc : Convert HTML pages into a PDF document

dev-games / openscenegraph : Open source high performance 3D graphics toolkit

dev-games / openscenegraph-openmw : OpenMW-specific fork of OpenSceneGraph

games-util / glbsp : A node builder specially designed for OpenGL ports of the DOOM game engine

media-sound / alsa-tools : Advanced Linux Sound Architecture tools

media-sound / csound : Sound design and signal processing system for composition and performance

media-sound / zynaddsubfx : Software synthesizer capable of making a countless number of instruments

sci-libs / mathgl : Math Graphics Library

sci-mathematics / pari : Computer-aided number theory C library and tools