# CMP0046

Error on non-existent dependency in add_dependencies.

CMake 2.8.12 and lower silently ignored non-existent dependencies listed in the `add_dependencies()` command.

The `OLD` behavior for this policy is to silently ignore non-existent dependencies. The `NEW` behavior for this policy is to report an error if non-existent dependencies are listed in the `add_dependencies()` command.

This policy was introduced in CMake version 3.0. It may be set by `cmake_policy()` or `cmake_minimum_required()`. If it is not set, CMake warns, and uses `OLD` behavior.

Note

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