There is another method of forcing use of the 64-bit linker on a per-project basis for Visual Studio 2013. Edit your .vcxproj file and insert the following after the <Import...Microsoft.Cpp.Defaults
line:
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup>
<PreferredToolArchitecture>x64</PreferredToolArchitecture>
</PropertyGroup>