Path: blob/master/Help/envvar/CMAKE_APPLE_SILICON_PROCESSOR.rst
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CMAKE_APPLE_SILICON_PROCESSOR ----------------------------- .. versionadded:: 3.19.2 .. include:: include/ENV_VAR.rst On Apple Silicon hosts running macOS, set this environment variable to tell CMake what architecture to use for :variable:`CMAKE_HOST_SYSTEM_PROCESSOR`. The value must be either ``arm64`` or ``x86_64``. The :variable:`CMAKE_APPLE_SILICON_PROCESSOR` normal variable, if set, overrides this environment variable.