You *must* have OpenSceneGraph (OSG) installed to build this version of
FlightGear.
+Notice that FlightGear 1.9.0 requires at least version 2.7.8. Using earlier
+versions of OSG will yield serious rendering bugs.
+
You can get the latest version of OSG from:
http://www.openscenegraph.org/
Build notes:
-Unzip the file OpenSceneGraph-2.4.zip and install using the following
+Unzip the file OpenSceneGraph-x.x.zip and install using the following
commands:
-unzip OpenSceneGraph-2.4
+unzip OpenSceneGraph-x.x
cd OpenSceneGraph
ccmake .