CMAKE_TLS_VERSION

在 3.30 版被加入.

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

在 3.31 版的變更: The default is TLS 1.2. Previously, no minimum version was enforced by default.

The value may be one of:

• 1.0

• 1.1

• 1.2

• 1.3

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