glBSP is a node builder specially designed for OpenGL ports of the DOOM
game engine.  It adheres to the "GL-Nodes Specification", which means it
adds some new special lumps to a WAD file that makes it easy and fast
for an OpenGL DOOM engine to compute the polygons needed for drawing
the levels.

There are many DOOM ports that understand the GL-Nodes which glBSP
creates, including: EDGE, the Doomsday engine (JDOOM), PrBoom, Legacy 2.0,
Vavoom, Doom3D and ZDoomGL.

This script builds both the command-line (glbsp) and GUI (glBSPX) binaries
of glBSP.  The GUI requires fltk (available at slackbuilds.org). If you
don't need the GUI and/or don't want to install fltk, "export OMIT_GUI=yes" 
in the build script's environment.

The package also includes a C header and a library (what would be known
as libglbsp-dev on other Linux distributions).  By default, a dynamic
library is created.  This works on x86 and x86_64 systems, but is untested
on others.  If you have trouble with the shared library, "export STATIC=yes"
in the build script's environment (and please contact the maintainer of
this SlackBuild!)