title: Converting variable to type 'string' in CMake
body: <p>Please tell me how does one convert a variable to a variable of type string in CMake.</p>
  
  <p>I have a variable that contains both digits and letters. Say of the form: "Ax3.0.1". I don't know exactly what type of variable CMake sees this at but I want to convert it to a string so I can itterate through it. Please tell me how can I do that. Thank you.</p>