title: Is it possible to add the Visual C++ v120 Compiler Tool Set to Visual Studio 2015?
body: <p>I have a programm using an GSL library which worked quite well with Visual Studio 2013. Now I set up a new Windows version and installed Visual Studio 2015 RC Community.</p>
  
  <p>After that I can not compile the code anymore. After converting the code to the new tool set I got the error that some external symbols of the libraries could not be found. I think this has something to do with the fact, that the library was build with Visual C++ v120.</p>
  
  <p>So is there a possiblilty to add this Compiler Version to the Studio? And does it work without trouble next to a new version installed. I do not want to install the older version of VS, because of the possibility of some troubles haveing to version parallel installed.</p>