CMP0006 — CMake 4.3.1 Documentation

# CMP0006

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()`.

Installing `MACOSX_BUNDLE` targets requires a `BUNDLE DESTINATION`.

This policy determines whether the `install(TARGETS)` command must be given a `BUNDLE DESTINATION` when asked to install a target with the `MACOSX_BUNDLE` property set. CMake 2.4 and below did not distinguish application bundles from normal executables when installing targets. CMake 2.6 provides a `BUNDLE` option to the `install(TARGETS)` command that specifies rules specific to application bundles on the Mac. Projects should use this option when installing a target with the `MACOSX_BUNDLE` property set.

The `OLD` behavior for this policy is to fall back to the `RUNTIME DESTINATION` if a `BUNDLE DESTINATION` is not given. The `NEW` behavior for this policy is to produce an error if a bundle target is installed without a `BUNDLE DESTINATION`.

This policy was introduced in CMake version 2.6.0. 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.