CMAKE_<LANG>_COMPILER_ARCHITECTURE_ID

New in version 3.10.

An internal variable subject to change.

This is used to identify the variant of a compiler based on its target architecture. For some compilers this is needed to determine the correct usage.

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.20/variable/CMAKE_LANG_COMPILER_ARCHITECTURE_ID.html