CMAKE_TLS_VERSION

.. versionadded:: 3.30

Specify the default value for the :command:file(DOWNLOAD) and :command:file(UPLOAD) commands' TLS_VERSION option. If this variable is not set, the commands check the :envvar:CMAKE_TLS_VERSION environment variable. If neither is set, the default is TLS 1.2.

.. versionchanged:: 3.31 The default is TLS 1.2. Previously, no minimum version was enforced by default.

The value may be one of:

.. include:: include/CMAKE_TLS_VERSION-VALUES.rst

This variable is also used by the :module:ExternalProject and :module:FetchContent modules for internal calls to :command:file(DOWNLOAD) and git clone.