esp-idf/components/esp_rom/CMakeLists.txt

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CMake
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idf_build_get_property(target IDF_TARGET)
set(include_dirs "include" "include/${target}")
set(private_required_comp "")
set(sources "")
if(target STREQUAL "linux")
list(APPEND sources "${target}/esp_rom_sys.c"
"${target}/esp_rom_crc.c"
"${target}/esp_rom_md5.c"
"${target}/esp_rom_efuse.c")
else()
list(APPEND include_dirs "${target}")
list(APPEND sources "patches/esp_rom_crc.c"
"patches/esp_rom_sys.c"
"patches/esp_rom_uart.c"
"patches/esp_rom_tjpgd.c")
list(APPEND private_required_comp soc hal)
endif()
if(CONFIG_IDF_TARGET_ARCH_XTENSA)
list(APPEND sources "patches/esp_rom_longjmp.S")
endif()
idf_component_register(SRCS ${sources}
INCLUDE_DIRS ${include_dirs}
PRIV_REQUIRES ${private_required_comp})
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# Append a target linker script at the target-specific path,
# only the 'name' part is different for each script
function(rom_linker_script name)
target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/ld/${target}.rom.${name}.ld")
endfunction()
if(target STREQUAL "linux")
# We need to disable some warnings due to the ROM code's printf implementation
if(${CMAKE_CXX_COMPILER_VERSION} GREATER "7.0.0") # TODO: clang compatibility
target_compile_options(${COMPONENT_LIB} PUBLIC -Wimplicit-fallthrough=0 -Wno-shift-count-overflow)
endif()
else()
target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/ld/${target}.rom.ld")
rom_linker_script("api")
rom_linker_script("libgcc")
endif()
if(BOOTLOADER_BUILD)
if(target STREQUAL "esp32")
rom_linker_script("newlib-funcs")
if(NOT CONFIG_SPI_FLASH_ROM_DRIVER_PATCH)
rom_linker_script("spiflash")
endif()
if(CONFIG_ESP32_REV_MIN_3)
rom_linker_script("eco3")
endif()
elseif(target STREQUAL "esp32s2")
rom_linker_script("newlib-funcs")
rom_linker_script("spiflash")
elseif(target STREQUAL "esp32s3")
rom_linker_script("newlib")
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elseif(target STREQUAL "esp32c3")
rom_linker_script("newlib")
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elseif(target STREQUAL "esp32h2")
rom_linker_script("newlib")
endif()
else() # Regular app build
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if(target STREQUAL "esp32")
rom_linker_script("newlib-data")
rom_linker_script("syscalls")
if(NOT CONFIG_SPIRAM_CACHE_WORKAROUND)
rom_linker_script("newlib-funcs")
if(NOT CONFIG_SDK_TOOLCHAIN_SUPPORTS_TIME_WIDE_64_BITS)
# If SDK_TOOLCHAIN_SUPPORTS_TIME_WIDE_64_BITS option is defined
# then all time functions from the ROM memory will not be linked.
# Instead, those functions can be used from the toolchain by ESP-IDF.
rom_linker_script("newlib-time")
endif()
# Include in newlib nano from ROM only if SPIRAM cache workaround is disabled
if(CONFIG_NEWLIB_NANO_FORMAT)
rom_linker_script("newlib-nano")
endif()
endif()
if(NOT CONFIG_SPI_FLASH_ROM_DRIVER_PATCH)
rom_linker_script("spiflash")
endif()
if(CONFIG_ESP32_REV_MIN_3)
rom_linker_script("eco3")
endif()
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elseif(target STREQUAL "esp32s2")
rom_linker_script("newlib-funcs")
rom_linker_script("newlib-data")
rom_linker_script("spiflash")
if(CONFIG_NEWLIB_NANO_FORMAT)
rom_linker_script("newlib-nano")
endif()
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# descirptors used by ROM code
target_sources(${COMPONENT_LIB} PRIVATE "esp32s2/usb_descriptors.c")
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elseif(target STREQUAL "esp32s3")
rom_linker_script("newlib")
rom_linker_script("version")
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if(CONFIG_NEWLIB_NANO_FORMAT)
rom_linker_script("newlib-nano")
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endif()
elseif(target STREQUAL "esp32c3")
rom_linker_script("newlib")
rom_linker_script("version")
if(CONFIG_NEWLIB_NANO_FORMAT)
rom_linker_script("newlib-nano")
endif()
if(CONFIG_ESP32C3_REV_MIN_3)
rom_linker_script("eco3")
endif()
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elseif(target STREQUAL "esp32h2")
rom_linker_script("newlib")
rom_linker_script("version")
if(CONFIG_NEWLIB_NANO_FORMAT)
rom_linker_script("newlib-nano")
endif()
endif()
if(CONFIG_IDF_TARGET_ARCH_XTENSA)
target_link_libraries(${COMPONENT_LIB} INTERFACE "-Wl,--wrap=longjmp")
endif()
endif()
if(target STREQUAL "esp32s2")
target_sources(${COMPONENT_LIB} PRIVATE "esp32s2/usb_descriptors.c")
endif()