CXX = g++
CXXFLAGS = -std=c++11 -02 -Wall
EXEC = main
all: $(EXEC)
tensor2D.o:tensor2D.cpp
 $(CXX) $(CXXFLAGS) -c $<
 $(EXEC):main.cpp tensor2D.o
   $(CXX) $(CXXFLAGS) $^ -o $@
   clean:
   rm -f .o $(EXEC)