1system_ss.add(when: 'CONFIG_CXL', 2 if_true: files( 3 'cxl-component-utils.c', 4 'cxl-device-utils.c', 5 'cxl-mailbox-utils.c', 6 'cxl-host.c', 7 'cxl-cdat.c', 8 'cxl-events.c', 9 'switch-mailbox-cci.c', 10 ), 11 if_false: files( 12 'cxl-host-stubs.c', 13 )) 14