# CMP0122

New in version 3.21.

`UseSWIG` use library name conventions for `CSharp` language.

Starting with CMake 3.21, `UseSWIG` generates now a library using default naming conventions. This policy provides compatibility with projects that expect the legacy behavior.

This policy was introduced in CMake version 3.21. CMake version 3.25.3 warns when the policy is not set and uses `OLD` behavior. Use the `cmake_policy()` command to set it to `OLD` or `NEW` explicitly.

Note

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