How to build x86 and/or x64 on Windows from command line with CMAKE?

Question

One way to get cmake to build x86 on Windows with Visual Studio is like so:

1. Start Visual Studio Command prompt for x86
2. Run cmake: cmake -G \"NMa

Answer 1

Besides CMAKE_GENERATOR_PLATFORM variable, there is also the -A switch

cmake -G "Visual Studio 16 2019" -A Win32
cmake -G "Visual Studio 16 2019" -A x64

https://cmake.org/cmake/help/v3.16/generator/Visual%20Studio%2016%202019.html#platform-selection

  -A            = Specify platform name if supported by
                                 generator.