Examples fixed when nvcc is not detected

example/Vector/3_molecular_dynamic_gpu_opt/Makefile

@@ -25,13 +25,13 @@ md_dyn_gpu_test: OPT += -DTEST_RUN
 md_dyn_gpu_test: all
 
 %.o: %.cu
-	$(CC) $(OPT)  -O3 -g -c -isystem=/home/i-bird/MPI/include --std=c++11 -o $@ $< $(INCLUDE_PATH_NVCC)
+	$(CC) $(OPT)  -O3 -g -c --std=c++11 -o $@ $< $(INCLUDE_PATH_NVCC)
 
 %.o: %.cpp
 	$(CC_MPI) $(OPT) -O3 -g -c --std=c++11 -o $@ $< $(INCLUDE_PATH)
 
 md_dyn_gpu: $(OBJ_GPU)
-	$(CC) -o $@ $^ $(CFLAGS) $(LIBS_PATH) $(LIBS) -L/home/i-bird/MPI/lib  -L/usr/local/cuda/lib64 -lcudart -lmpi -L/usr/local/cuda/extras/CUPTI/lib64 -lhdf5
+	$(CC_MPI) -o $@ $^ $(CFLAGS) $(LIBS_PATH) $(LIBS)
 
 md_dyn_cpu: $(OBJ_CPU)
 	$(CC_MPI) -o $@ $^ $(CFLAGS) $(LIBS_PATH) $(LIBS)