Regarding constants across multiple compilers

At the moment, I'm limited to using a Visual Studio 2010 for a project, but will be able to switch to VS 2015/Express/whatever in the near future. As such, I'm making the code forwards-compatible with C++11 features VS2010 doesn't support via #ifdef/#else/#endif blocks, so I can update things quickly once I can switch. This works fine and all, but I want to make sure this isn't considered bad practice or anything:

// Constants, for forwards compatibility.
#ifdef STUDIO_2010
typedef const int constint;
#else        /* STUDIO_2010 */
using constint = constexpr int;
#endif       /* STUDIO_2010 */

constint const1 = 0;
// etc.

Edit: Sorry for any confusion, I mistyped. It's about const int vs. constexpr int, not typedef styles. Fixed now.