# CMP0062

Warning

The `OLD` behavior of this policy was removed in CMake version 4.0. This policy must be set to `NEW` by a call to `cmake_minimum_required()` or `cmake_policy()`.

Added in version 3.3.

Disallow `install()` of `export()` result.

The `export()` command generates a file containing Imported Targets, which is suitable for use from the build directory. It is not suitable for installation because it contains absolute paths to buildsystem locations, and is particular to a single build configuration.

The `install(EXPORT)` generates and installs files which contain Imported Targets. These files are generated with relative paths (unless the user specifies absolute paths), and are designed for multi-configuration use. See Creating Packages for more.

CMake 3.3 no longer allows the use of the `install(FILES)` command with the result of the `export()` command.

The `OLD` behavior for this policy is to allow installing the result of an `export()` command. The `NEW` behavior for this policy is not to allow installing the result of an `export()` command.

This policy was introduced in CMake version 3.3. Prior to removal in CMake version 4.0, it could be set by `cmake_policy()` or `cmake_minimum_required()`. If it was not set, CMake warned, and used `OLD` behavior.