以下讨论看起来很有帮助：在32位计算机上编译64位 [ ^ ]



它说：请确保在32位计算机上安装了x64位编译器。默认情况下不安装。

转到添加/删除程序，选择Visual Studio，更改，添加/删除功能并从C ++节点添加x64编译器。安装x64编译器后，您应该在Platform下看到相应的选项，并且shoudl能够在32位机器上构建x64项目。

Following discussion looks helpful: Compiling for 64 bit on a 32 bit machine[^]

It says: Please make sure that x64 bit compilers are installed on your 32-bit machine. Not installed by default.
Goto Add/Remove programs, select Visual Studio, Change, Add/Remove features and add x64 compilers from C++ node. After installing x64 compilers, you should see appropriate options under Platform and shoudl be able to build x64 projects on 32 bit machine.