# SPDX-License-Identifier: Apache-2.0 zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_SERIAL shell_uart.c ) zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_DUMMY shell_dummy.c ) zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_RTT shell_rtt.c ) zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_TELNET shell_telnet.c ) zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_MQTT shell_mqtt.c ) zephyr_sources_ifdef( CONFIG_SHELL_BACKEND_RPMSG shell_rpmsg.c )