system_ss.add(when: 'CONFIG_CADENCE', if_true: files('cadence_uart.c'))
system_ss.add(when: 'CONFIG_CMSDK_APB_UART', if_true: files('cmsdk-apb-uart.c'))
system_ss.add(when: 'CONFIG_ESCC', if_true: files('escc.c'))
system_ss.add(when: 'CONFIG_GRLIB', if_true: files('grlib_apbuart.c'))
system_ss.add(when: 'CONFIG_IBEX', if_true: files('ibex_uart.c'))
system_ss.add(when: 'CONFIG_IMX', if_true: files('imx_serial.c'))
system_ss.add(when: 'CONFIG_IPACK', if_true: files('ipoctal232.c'))
system_ss.add(when: 'CONFIG_ISA_BUS', if_true: files('parallel-isa.c'))
system_ss.add(when: 'CONFIG_ISA_DEBUG', if_true: files('debugcon.c'))
system_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_uart.c'))
system_ss.add(when: 'CONFIG_PARALLEL', if_true: files('parallel.c'))
system_ss.add(when: 'CONFIG_PL011', if_true: files('pl011.c'))
system_ss.add(when: 'CONFIG_SCLPCONSOLE', if_true: files('sclpconsole.c', 'sclpconsole-lm.c'))
system_ss.add(when: 'CONFIG_SERIAL', if_true: files('serial.c'))
system_ss.add(when: 'CONFIG_SERIAL_ISA', if_true: files('serial-isa.c'))
system_ss.add(when: 'CONFIG_SERIAL_MM', if_true: files('serial-mm.c'))
system_ss.add(when: 'CONFIG_SERIAL_PCI', if_true: files('serial-pci.c'))
system_ss.add(when: 'CONFIG_SERIAL_PCI_MULTI', if_true: files('serial-pci-multi.c'))
system_ss.add(when: 'CONFIG_SHAKTI_UART', if_true: files('shakti_uart.c'))
system_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-console.c'))
system_ss.add(when: 'CONFIG_XEN_BUS', if_true: files('xen_console.c'))
system_ss.add(when: 'CONFIG_XILINX', if_true: files('xilinx_uartlite.c'))

system_ss.add(when: 'CONFIG_AVR_USART', if_true: files('avr_usart.c'))
system_ss.add(when: 'CONFIG_COLDFIRE', if_true: files('mcf_uart.c'))
system_ss.add(when: 'CONFIG_DIGIC', if_true: files('digic-uart.c'))
system_ss.add(when: 'CONFIG_EXYNOS4', if_true: files('exynos4210_uart.c'))
system_ss.add(when: 'CONFIG_OMAP', if_true: files('omap_uart.c'))
system_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_aux.c'))
system_ss.add(when: 'CONFIG_RENESAS_SCI', if_true: files('renesas_sci.c'))
system_ss.add(when: 'CONFIG_SIFIVE_UART', if_true: files('sifive_uart.c'))
system_ss.add(when: 'CONFIG_SH_SCI', if_true: files('sh_serial.c'))
system_ss.add(when: 'CONFIG_STM32F2XX_USART', if_true: files('stm32f2xx_usart.c'))
system_ss.add(when: 'CONFIG_STM32L4X5_USART', if_true: files('stm32l4x5_usart.c'))
system_ss.add(when: 'CONFIG_MCHP_PFSOC_MMUART', if_true: files('mchp_pfsoc_mmuart.c'))
system_ss.add(when: 'CONFIG_HTIF', if_true: files('riscv_htif.c'))
system_ss.add(when: 'CONFIG_GOLDFISH_TTY', if_true: files('goldfish_tty.c'))

specific_ss.add(when: 'CONFIG_TERMINAL3270', if_true: files('terminal3270.c'))
specific_ss.add(when: 'CONFIG_VIRTIO', if_true: files('virtio-serial-bus.c'))
specific_ss.add(when: 'CONFIG_PSERIES', if_true: files('spapr_vty.c'))