CMP0163

New in version 3.30.

The GENERATED source file property is now visible in all directories.

In CMake 3.29 and below, the GENERATED source file property, like other source file properties, was scoped in every directory separately. Although policy CMP0118 allowed sources marked GENERATED in one directory to be used in other directories without manually marking them as GENERATED again, the GENERATED property was still not visible to get_property() and get_source_file_property() calls.

Whether or not a source file is generated is an all-or-nothing global property of the source: a source is either generated or it is not. CMake 3.30 and above prefer to treat the GENERATED source file property as globally scoped. Once it is set in one directory, it is immediately visible to get_property() and get_source_file_property() calls in other directories. This policy provides compatibility for projects that have not been updated for this behavior.

The OLD behavior of this policy is for the GENERATED source file property to be visible only in the directories in which it is set. The NEW behavior of this policy is to allow the GENERATED source file property to be visible in all directories once set in any directory. Furthermore, the NEW behavior of this policy implies the NEW behavior of policy CMP0118: the GENERATED property may be set only to boolean values, and may not be turned off once turned on.

This policy was introduced in CMake version 3.30. It may be set by cmake_policy() or cmake_minimum_required(). If it is not set, CMake does not warn, 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.