We have to build the following:

• a .mod file for the use statements (step 1 to use in step 2)
  
  
• a .lib file for the linker (step 2 to use in step 3)
  
  
• a .dll file for the run time system (step 2 to use in step 4)
  
  
• a .exe file (step 3 uses the .lib and the .mod)
  
  
• then we can execute the program (step 4 uses the .dll)

Note that we do not need a .obj file