make GLUT optional in cmake

fix for btMultiBody to avoid extreme energy gain

src/Bullet3Collision/CMakeLists.txt

@@ -0,0 +1,90 @@
+
+INCLUDE_DIRECTORIES(
+	${BULLET_PHYSICS_SOURCE_DIR}/src
+)
+
+SET(Bullet3Collision_SRCS
+    BroadPhaseCollision/b3DynamicBvh.cpp
+    BroadPhaseCollision/b3DynamicBvhBroadphase.cpp
+    BroadPhaseCollision/b3OverlappingPairCache.cpp
+    NarrowPhaseCollision/b3ConvexUtility.cpp
+    NarrowPhaseCollision/b3CpuNarrowPhase.cpp
+)
+
+SET(Bullet3CollisionBroadPhase_HDRS
+	BroadPhaseCollision/b3BroadphaseCallback.h
+	BroadPhaseCollision/b3DynamicBvh.h
+	BroadPhaseCollision/b3DynamicBvhBroadphase.h
+	BroadPhaseCollision/b3OverlappingPair.h
+	BroadPhaseCollision/b3OverlappingPairCache.h
+)
+SET(Bullet3CollisionBroadPhaseShared_HDRS
+	BroadPhaseCollision/shared/b3Aabb.h
+)
+
+SET(Bullet3CollisionNarrowPhase_HDRS
+	NarrowPhaseCollision/b3Config.h
+	NarrowPhaseCollision/b3Contact4.h
+	NarrowPhaseCollision/b3ConvexUtility.h
+	NarrowPhaseCollision/b3CpuNarrowPhase.h
+	NarrowPhaseCollision/b3RaycastInfo.h
+	NarrowPhaseCollision/b3RigidBodyCL.h
+)
+SET(Bullet3CollisionNarrowPhaseShared_HDRS
+
+	NarrowPhaseCollision/shared/b3BvhSubtreeInfoData.h
+	NarrowPhaseCollision/shared/b3BvhTraversal.h
+	NarrowPhaseCollision/shared/b3ClipFaces.h
+	NarrowPhaseCollision/shared/b3Collidable.h
+	NarrowPhaseCollision/shared/b3Contact4Data.h
+	NarrowPhaseCollision/shared/b3ContactConvexConvexSAT.h
+	NarrowPhaseCollision/shared/b3ContactSphereSphere.h
+	NarrowPhaseCollision/shared/b3ConvexPolyhedronData.h
+	NarrowPhaseCollision/shared/b3FindConcaveSatAxis.h
+	NarrowPhaseCollision/shared/b3FindSeparatingAxis.h
+	NarrowPhaseCollision/shared/b3MprPenetration.h
+	NarrowPhaseCollision/shared/b3NewContactReduction.h
+	NarrowPhaseCollision/shared/b3QuantizedBvhNodeData.h
+	NarrowPhaseCollision/shared/b3ReduceContacts.h
+	NarrowPhaseCollision/shared/b3RigidBodyData.h
+	NarrowPhaseCollision/shared/b3UpdateAabbs.h
+)
+
+SET(Bullet3Collision_HDRS
+	${Bullet3CollisionBroadPhase_HDRS}
+	${Bullet3CollisionBroadPhaseShared_HDRS}
+	${Bullet3CollisionNarrowPhaseShared_HDRS}
+	${Bullet3CollisionNarrowPhase_HDRS}
+)
+
+ADD_LIBRARY(Bullet3Collision ${Bullet3Collision_SRCS} ${Bullet3Collision_HDRS})
+SET_TARGET_PROPERTIES(Bullet3Collision PROPERTIES VERSION ${BULLET_VERSION})
+SET_TARGET_PROPERTIES(Bullet3Collision PROPERTIES SOVERSION ${BULLET_VERSION})
+
+IF (INSTALL_LIBS)
+	IF (NOT INTERNAL_CREATE_DISTRIBUTABLE_MSVC_PROJECTFILES)
+		#FILES_MATCHING requires CMake 2.6
+		IF (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 2.5)
+			IF (APPLE AND BUILD_SHARED_LIBS AND FRAMEWORK)
+				INSTALL(TARGETS Bullet3Collision DESTINATION .)
+			ELSE (APPLE AND BUILD_SHARED_LIBS AND FRAMEWORK)
+				INSTALL(TARGETS Bullet3Collision 
+					RUNTIME DESTINATION bin
+					LIBRARY DESTINATION lib${LIB_SUFFIX}
+					ARCHIVE DESTINATION lib${LIB_SUFFIX})
+				INSTALL(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+DESTINATION ${INCLUDE_INSTALL_DIR} FILES_MATCHING PATTERN "*.h"  PATTERN
+".svn" EXCLUDE PATTERN "CMakeFiles" EXCLUDE)
+			ENDIF (APPLE AND BUILD_SHARED_LIBS AND FRAMEWORK)
+		ENDIF (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 2.5)
+
+		IF (APPLE AND BUILD_SHARED_LIBS AND FRAMEWORK)
+			SET_TARGET_PROPERTIES(Bullet3Collision PROPERTIES FRAMEWORK true)
+			SET_TARGET_PROPERTIES(Bullet3Collision PROPERTIES PUBLIC_HEADER "${Bullet3Collision_HDRS}")
+			# Have to list out sub-directories manually:
+			#todo
+			#SET_PROPERTY(SOURCE ${Bullet3CollisionBroadPhase_HDRS} PROPERTY MACOSX_PACKAGE_LOCATION Headers/BroadPhaseCollision)
+
+		ENDIF (APPLE AND BUILD_SHARED_LIBS AND FRAMEWORK)
+	ENDIF (NOT INTERNAL_CREATE_DISTRIBUTABLE_MSVC_PROJECTFILES)
+ENDIF (INSTALL_LIBS)