# CMP0143

New in version 3.26.

`USE_FOLDERS` global property is treated as `ON` by default.

When using CMake 3.25 or earlier, `USE_FOLDERS` is treated as `OFF` by default unless projects enable the feature. For example:

    cmake_minimum_required(VERSION 3.25)
    project(foobar LANGUAGES CXX)
    set_property(GLOBAL PROPERTY USE_FOLDERS ON)

CMake 3.26 and later prefer to enable the feature by default.

Note that it is the policy setting at the end of the top level `CMakeLists.txt` file that matters. The policy setting applies globally to the whole project.

This policy provides compatibility with projects that have not been updated to expect enabling of folders. Enabling folders causes projects to appear differently in IDEs. The policy was introduced in CMake version 3.26. Use the `cmake_policy()` command to set it to `OLD` or `NEW` explicitly. Unlike many policies, CMake version 3.27.6 does not warn when this policy is not set and simply uses `OLD` behavior.

Note

The `OLD` behavior of a policy is `deprecated by definition` and may be removed in a future version of CMake.