to get cythonized library of level-set toolbox, only ./lib/ and ./LSTO2D are required herein
./lib/lsm2d_classwise
sh ./run_setup.sh
cp ./build/lib*/lsm_classes.so ./../../LSTO2D
./../fem2d
./run_setup.sh
cp ./fem2d/fem2d.so ./../../LSTO2D/run run_LSTO.run