add_library(CMSIS INTERFACE) target_include_directories(CMSIS INTERFACE ${PROJECT_SOURCE_DIR}/include/cmsis_rtos_v2) zephyr_library() zephyr_library_sources_ifdef( CONFIG_CMSIS_RTOS_V2 thread.c kernel.c timer.c ) zephyr_library_link_libraries(CMSIS) target_link_libraries(CMSIS INTERFACE zephyr_interface)