...
cmake --build . -- /p:PreferredToolArchitecture=ARM64
3. Specify a different target processor
Setting -DCMAKE_SYSTEM_PROCESSOR does not seems to have the expected effect, as it's still set to CMAKE_HOST_SYSTEM_PROCESSOR. The documentation does not state this explicitly, but it can be interpreted that a CMAKE_TOOLCHAIN_FILE is needed to set it: https://cmake.org/cmake/help/latest/variable/CMAKE_SYSTEM_PROCESSOR.html.
So, instead, write a cross.cmake file:
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set(CMAKE_SYSTEM_NAME "Windows")
set(CMAKE_SYSTEM_PROCESSOR "ARM64") |
and pass it to cmake instead:
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cmake -DCMAKE_TOOLCHAIN_FILE=C:/path/to/cross.cmake |