1system_ss.add(when: 'CONFIG_STM32F2XX_ADC', if_true: files('stm32f2xx_adc.c')) 2system_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('aspeed_adc.c')) 3system_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_adc.c')) 4system_ss.add(when: 'CONFIG_ZYNQ', if_true: files('zynq-xadc.c')) 5