IMPORTED_NO_SYSTEM

Specifies that an Imported Target is not a SYSTEM library. This has the following effects:

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

This property can also be enabled on a non-imported target. Doing so does not affect the build system, but does tell the install(EXPORT) and export() commands to enable it on the imported targets they generate.

See the NO_SYSTEM_FROM_IMPORTED target property to set this behavior on the target consuming the include directories rather than providing them.