title: How to generate 64-bit Visual Studio projects from qmake
body: <p>I am using Qt Creator to create some shared library and application projects so that I can easily build them on Windows and Linux.  On Windows, some of us prefer using Visual Studio so I want to generate Visual Studio solution and project files from the Qt .pro files using <strong>qmake -tp vc -r file.pro</strong>.  Everything works exactly as expected except that the generated Visual Studio solution and projects only contain 32-bit build configurations and I need 64-bit configurations.  It's not a big deal to create the 64-bit configuration in Visual Studio but it would be an easy step to overlook for somebody.  I'm wondering if there's a way to do it automatically by either adding something to my .pro files or as an argument to qmake?</p>