diff --git a/Extras/BulletMultiThreaded/Makefile b/Extras/BulletMultiThreaded/Makefile
new file mode 100644
index 000000000..65b0e09de
--- /dev/null
+++ b/Extras/BulletMultiThreaded/Makefile
@@ -0,0 +1,168 @@
+__ARCH_BITS__ := 32
+
+# define macros
+NARROWPHASEDIR=./SpuNarrowPhaseCollisionTask
+SPU_TASKFILE=$(NARROWPHASEDIR)/SpuGatheringCollisionTask
+
+RM=rm -f 
+OUTDIR=./out
+DEBUGFLAG=-DNDEBUG
+LIBOUTDIR=../../out/linuxppc/optimize/libs
+COLLISIONDIR=../../src/BulletCollision
+MATHDIR=../../src/LinearMath
+CELLSDKDIR=/opt/ibm/cell-sdk
+ARCHITECTUREFLAG=-m$(__ARCH_BITS__)
+ifeq "$(__ARCH_BITS__)" "64"
+  SPU_DEFFLAGS= -DUSE_LIBSPE2 -D__SPU__ -DUSE_ADDR64
+else
+  SPU_DEFFLAGS= -DUSE_LIBSPE2 -D__SPU__
+endif
+SPU_GCC=/usr/bin/spu-gcc
+SPU_INCLUDEDIR= -I. -I$(CELLSDKDIR)/prototype/sysroot/usr/spu/include -I../../src -I$(NARROWPHASEDIR)
+#SPU_CFLAGS= $(DEBUGFLAG) -W -Wall -Winline -Os -c -include spu_intrinsics.h -include stdbool.h
+SPU_CFLAGS= $(DEBUGFLAG) -W -Wall -Winline -O3 -mbranch-hints -fomit-frame-pointer -ftree-vectorize -finline-functions -ftree-vect-loop-version -ftree-loop-optimize -ffast-math -fno-rtti -fno-exceptions -c -include spu_intrinsics.h -include stdbool.h
+
+SPU_LFLAGS= -Wl,-N
+SPU_LIBRARIES=-lstdc++
+SPU_EMBED=/usr/bin/ppu-embedspu
+SPU_AR=/usr/bin/ar
+SYMBOLNAME=spu_program
+
+ifeq "$(__ARCH_BITS__)" "64"
+  PPU_DEFFLAGS= -DUSE_LIBSPE2 -DUSE_ADDR64
+  PPU_GCC=/usr/bin/ppu-gcc
+else
+  PPU_DEFFLAGS= -DUSE_LIBSPE2
+  PPU_GCC=/usr/bin/ppu32-gcc
+endif
+
+PPU_CFLAGS= $(ARCHITECTUREFLAG) $(DEBUGFLAG) -W -Wall -Winline -O3 -c -mabi=altivec -maltivec -include altivec.h -include stdbool.h
+PPU_INCLUDEDIR= -I. -I$(CELLSDKDIR)/prototype/sysroot/usr/include -I../../src -I$(NARROWPHASEDIR)
+PPU_LFLAGS= $(ARCHITECTUREFLAG) -Wl,-m,elf$(__ARCH_BITS__)ppc
+PPU_LIBRARIES= -lstdc++ -lsupc++ -lgcc -lgcov -lspe2 -lpthread -L../../out/linuxppc/optimize/libs -lbulletcollision -lbulletdynamics -lbulletmath -L$(CELLSDKDIR)/prototype/sysroot/usr/lib$(__ARCH_BITS__) -R$(CELLSDKDIR)/prototype/sysroot/usr/lib
+PPU_AR=/usr/bin/ar
+
+MakeOut :
+	rm -f -R $(OUTDIR) ; mkdir $(OUTDIR)
+
+# SPU
+SpuTaskFile : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/SpuTaskFile.o $(SPU_TASKFILE).cpp
+
+SpuFakeDma : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+
+SpuContactManifoldCollisionAlgorithm_spu : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o SpuContactManifoldCollisionAlgorithm.cpp
+
+SpuContactResult : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(NARROWPHASEDIR)/$@.cpp
+
+#SpuGatheringCollisionTask : MakeOut
+#	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(NARROWPHASEDIR)/$@.cpp
+
+SpuGjkPairDetector: MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(NARROWPHASEDIR)/$@.cpp
+
+SpuMinkowskiPenetrationDepthSolver : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(NARROWPHASEDIR)/$@.cpp
+
+SpuVoronoiSimplexSolver : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(NARROWPHASEDIR)/$@.cpp
+
+#SpuLibspe2Support_spu : MakeOut
+#	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o SpuLibspe2Support.cpp
+
+## SPU-Bullet
+btPersistentManifold : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/NarrowPhaseCollision/$@.cpp
+
+btOptimizedBvh : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/CollisionShapes/$@.cpp
+
+btCollisionObject : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/CollisionDispatch/$@.cpp
+
+btTriangleCallback : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/CollisionShapes/$@.cpp
+
+btTriangleIndexVertexArray : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/CollisionShapes/$@.cpp
+
+btStridingMeshInterface : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(COLLISIONDIR)/CollisionShapes/$@.cpp
+
+btAlignedAllocator : MakeOut
+	$(SPU_GCC) $(SPU_DEFFLAGS) $(SPU_CFLAGS) $(SPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $(MATHDIR)/$@.cpp
+
+
+# PPU
+SpuGatheringCollisionDispatcher : MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+
+SpuLibspe2Support: MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+
+btThreadSupportInterface: MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+
+SpuCollisionTaskProcess : MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+
+SpuContactManifoldCollisionAlgorithm : MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+	
+SpuSampleTaskProcess : MakeOut
+	$(PPU_GCC) $(PPU_DEFFLAGS) $(PPU_CFLAGS) $(PPU_INCLUDEDIR) -o $(OUTDIR)/$@.o $@.cpp
+	
+
+
+spu : SpuFakeDma SpuContactManifoldCollisionAlgorithm_spu SpuContactResult SpuTaskFile \
+      SpuGjkPairDetector SpuMinkowskiPenetrationDepthSolver SpuVoronoiSimplexSolver \
+      btPersistentManifold btOptimizedBvh btCollisionObject btTriangleCallback btTriangleIndexVertexArray \
+      btStridingMeshInterface btAlignedAllocator
+	$(SPU_GCC) -o $(OUTDIR)/$@ \
+                            $(OUTDIR)/SpuTaskFile.o \
+                            $(OUTDIR)/SpuFakeDma.o \
+                            $(OUTDIR)/SpuContactManifoldCollisionAlgorithm_spu.o \
+                            $(OUTDIR)/SpuContactResult.o \
+                            $(OUTDIR)/SpuGjkPairDetector.o \
+                            $(OUTDIR)/SpuMinkowskiPenetrationDepthSolver.o \
+                            $(OUTDIR)/SpuVoronoiSimplexSolver.o \
+                            $(OUTDIR)/btPersistentManifold.o \
+                            $(OUTDIR)/btOptimizedBvh.o \
+                            $(OUTDIR)/btCollisionObject.o \
+                            $(OUTDIR)/btTriangleCallback.o \
+                            $(OUTDIR)/btTriangleIndexVertexArray.o \
+                            $(OUTDIR)/btStridingMeshInterface.o \
+                            $(OUTDIR)/btAlignedAllocator.o \
+                            $(SPU_LFLAGS) $(SPU_LIBRARIES)
+
+spu-embed : spu                            
+	$(SPU_EMBED) $(ARCHITECTUREFLAG) $(SYMBOLNAME) $(OUTDIR)/spu $(OUTDIR)/$@.o
+	$(SPU_AR) -qcs $(LIBOUTDIR)/libspu.a $(OUTDIR)/$@.o
+
+
+
+ppu : SpuGatheringCollisionDispatcher SpuCollisionTaskProcess btThreadSupportInterface \
+      SpuLibspe2Support SpuContactManifoldCollisionAlgorithm SpuSampleTaskProcess
+	$(PPU_AR) -qcs $(LIBOUTDIR)/libbulletmultithreaded.a \
+                                                          $(OUTDIR)/SpuCollisionTaskProcess.o \
+                                                          $(OUTDIR)/SpuSampleTaskProcess.o \
+                                                          $(OUTDIR)/SpuGatheringCollisionDispatcher.o \
+                                                          $(OUTDIR)/SpuLibspe2Support.o \
+                                                          $(OUTDIR)/btThreadSupportInterface.o \
+							  $(OUTDIR)/SpuContactManifoldCollisionAlgorithm.o
+
+
+all : spu ppu 
+
+all-embed : spu-embed ppu
+
+
+clean :
+	$(RM) $(OUTDIR)/* ; $(RM) $(LIBOUTDIR)/libspu.a ; $(RM) $(LIBOUTDIR)/libbulletmultithreaded.a
+
+
+
+