| CMAKE_TLS_VERIFY |
| ---------------- |
| |
| Specify the default value for the :command:`file(DOWNLOAD)` and |
| :command:`file(UPLOAD)` commands' ``TLS_VERIFY`` options. |
| If this variable is not set, the commands check the |
| :envvar:`CMAKE_TLS_VERIFY` environment variable. |
| If neither is set, the default is *on*. |
| |
| .. versionchanged:: 3.31 |
| The default is on. Previously, the default was off. |
| Users may set the :envvar:`CMAKE_TLS_VERIFY` environment |
| variable to ``0`` to restore the old default. |
| |
| This variable is also used by the :module:`ExternalProject` and |
| :module:`FetchContent` modules for internal calls to :command:`file(DOWNLOAD)`. |
| |
| TLS verification can help provide confidence that one is connecting |
| to the desired server. When downloading known content, one should |
| also use file hashes to verify it. |
| |
| .. code-block:: cmake |
| |
| set(CMAKE_TLS_VERIFY TRUE) |
