Is 64-bit compilation available in Visual Studio Express 2012 or Express 2013?
I know it's not available in Visual Studio 2010 Express, and one needs to install a few things to make it available.
64-bit tools are not available on Visual C++ Express by default. To enable 64-bit tools on Visual C++ Express, install the Windows Software Development Kit (SDK) in addition to Visual C++ Express. Otherwise, an error occurs when you attempt to configure a project to target a 64-bit platform using Visual C++ Express.