# CMP0152

Added in version 3.28.

`file(REAL_PATH)` resolves symlinks before collapsing ../ components.

In CMake 3.27 and below, `file(REAL_PATH)` collapsed any `../` components in a path before resolving symlinks. This produced incorrect results when the `../` collapsed away a symlink.

The `OLD` behavior for this policy is to collapse `../` components before resolving symlinks. The `NEW` behavior for this policy is to resolve all symlinks before collapsing `../` components.

This policy was introduced in CMake version 3.28. 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.