if CONDITIONAL_BUILD_MULTITHREADED SUBDIRS=OpenGL BasicDemo ForkLiftDemo FeatherstoneMultiBodyDemo TerrainDemo VehicleDemo CcdPhysicsDemo MultiThreadedDemo SoftDemo AllBulletDemos else SUBDIRS=OpenGL BasicDemo ForkLiftDemo FeatherstoneMultiBodyDemo TerrainDemo VehicleDemo CcdPhysicsDemo SoftDemo AllBulletDemos endif