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CMAKE_TOOLCHAIN_FILE

Help/envvar/CMAKE_TOOLCHAIN_FILE.rst

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CMAKE_TOOLCHAIN_FILE

.. versionadded:: 3.21

.. include:: include/ENV_VAR.rst

The CMAKE_TOOLCHAIN_FILE environment variable specifies a default value for the :variable:CMAKE_TOOLCHAIN_FILE variable when there is no explicit configuration given on the first run while creating a new build tree. On later runs in an existing build tree the value persists in the cache as :variable:CMAKE_TOOLCHAIN_FILE.