esp-idf/components/soc/esp32/sources.cmake

set(SOC_SRCS "cpu_util.c"
    "gpio_periph.c"
    "rtc_clk.c"
    "rtc_clk_init.c"
    "rtc_init.c"
    "rtc_periph.c"
    "rtc_pm.c"
    "rtc_sleep.c"
    "rtc_time.c"
    "rtc_wdt.c"
    "sdio_slave_periph.c"
    "sdmmc_periph.c"
    "soc_memory_layout.c"
    "spi_periph.c")

if(NOT CMAKE_BUILD_EARLY_EXPANSION)
    set_source_files_properties("esp32/rtc_clk.c" PROPERTIES
                                COMPILE_FLAGS "-fno-jump-tables -fno-tree-switch-conversion")
endif()