SYSTEM

New in version 3.25.

Specifies that a target is a SYSTEM library. This has the following effects:

• Entries of INTERFACE_INCLUDE_DIRECTORIES are treated as SYSTEM include directories when compiling consumers. Entries of INTERFACE_SYSTEM_INCLUDE_DIRECTORIES are not affected, and will always be treated as SYSTEM include directories.

For imported targets, this property defaults to true, which means that their INTERFACE_INCLUDE_DIRECTORIES are treated as SYSTEM by default. If their SYSTEM property is false, then their INTERFACE_INCLUDE_DIRECTORIES will not be treated as SYSTEM, regardless of the value of the IMPORTED_NO_SYSTEM property.

This target property is initialized from the SYSTEM directory property when the target is created.