text: .PHONY: all
  all: test
  # This rule tells make how to build hello from test1.cpp
  test: test1.cpp
  	g++ -O2 -I../../include test1.cpp -o test1.o
  
  # This rule tells make to delete the program
  .PHONY: clean 
  clean:
  	rm -f test1.o
  
  
  