# CMP0015

> `link_directories()` treats paths relative to the source dir.

In CMake 2.8.0 and lower the `link_directories()` command passed relative paths unchanged to the linker. In CMake 2.8.1 and above the `link_directories()` command prefers to interpret relative paths with respect to `CMAKE_CURRENT_SOURCE_DIR`, which is consistent with `include_directories()` and other commands. The `OLD` behavior for this policy is to use relative paths verbatim in the linker command. The `NEW` behavior for this policy is to convert relative paths to absolute paths by appending the relative path to `CMAKE_CURRENT_SOURCE_DIR`.

This policy was introduced in CMake version 2.8.1. CMake version 3.19.4 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.