如果能获得有关此问题的帮助，我将不胜感激。我在链接 ESP-IDF 项目时遇到了多重定义问题，但无法找出原因。我正在使用外部 CMake 库并将它们链接到名为“Device”的自定义 ESP-IDF 组件。然后，我的主要组件依赖并链接到“Device”组件。
这是“Device”组件的 CMakeLists.txt：
SET(PROJECT_SRC ${CMAKE_CURRENT_SOURCE_DIR}/../../../..)
SET(DEVICE_SRC ${PROJECT_SRC}/Device/)
SET(DEVICE_HAL_SRC ${DEVICE_SRC}/src/Hal/Esp32)
SET(SHARED_SRC ${PROJECT_SRC}/Shared/)
SET(LIB_SRC ${PROJECT_SRC}/lib/)
idf_component_register()
add_subdirectory(${DEVICE_SRC}/src/Core ../../mylib/Device)
add_subdirectory(${SHARED_SRC}/Core ../../mylib/Shared)
add_subdirectory(${LIB_SRC}/nanopb ../../mylib/nanopb)
add_subdirectory(${LIB_SRC}/arduinojson ../../mylib/arduinojson)
add_subdirectory(${LIB_SRC}/Fusion ../../mylib/Fusion)
target_link_libraries(${COMPONENT_LIB} INTERFACE
DeviceLib
)
这是外部“DeviceLib”库的 CMakeLists.txt：
add_library(DeviceLib)
target_link_libraries(DeviceLib SharedLib Fusion)
add_subdirectory(Autopilot)
add_subdirectory(Comm)
add_subdirectory(Device)
add_subdirectory(Hal)
add_subdirectory(Managers)
add_subdirectory(Sensors)
add_subdirectory(Util)
target_include_directories(DeviceLib PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
注意它链接到“SharedLib”。
这是“主要”组件的 CMakeLists.txt：
SET(PROJECT_SRC ${CMAKE_CURRENT_SOURCE_DIR}/../../..)
SET(DEVICE_SRC ${PROJECT_SRC}/Device/)
SET(DEVICE_HAL_SRC ${DEVICE_SRC}/src/Hal/Esp32)
SET(SHARED_SRC ${PROJECT_SRC}/Shared/)
SET(LIB_SRC ${PROJECT_SRC}/lib/)
idf_component_register(
SRCS
${DEVICE_SRC}/src/main.cpp
${CMAKE_CURRENT_SOURCE_DIR}/DeviceInit.cpp
${CMAKE_CURRENT_SOURCE_DIR}/Esp32Device.cpp
${DEVICE_HAL_SRC}/Esp32DeviceBaseHal.cpp
${DEVICE_HAL_SRC}/Esp32I2CConnection.cpp
${DEVICE_HAL_SRC}/Esp32Logging.cpp
${DEVICE_HAL_SRC}/Esp32PwmConnection.cpp
${DEVICE_HAL_SRC}/Esp32SerialConnection.cpp
${DEVICE_HAL_SRC}/Esp32Util.cpp
INCLUDE_DIRS
"."
${DEVICE_HAL_SRC}
REQUIRES driver esp_timer
PRIV_REQUIRES Device
)
我认为正在发生的事情是，当我在“Device”组件中调用 add_subdirectory() 并将外部库链接到该组件时，不知何故这些外部库也包含在“main”库中，导致多个定义问题。这是构建我的项目的输出：
[0/1] Re-running CMake...
-- Building ESP-IDF components for target esp32
-- Project sdkconfig file C:/MyProjects/FoxtrotFC/Device/Esp32/sdkconfig
Loading defaults file C:/MyProjects/FoxtrotFC/Device/Esp32/sdkconfig.defaults...
-- App "Esp32" version: 1d896d2-dirty
-- Adding linker script C:/MyProjects/FoxtrotFC/Device/Esp32/build/esp-idf/esp_system/ld/memory.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_system/ld/esp32/sections.ld.in
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.api.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.libgcc.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.newlib-data.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.syscalls.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld
-- Adding linker script C:/Espressif/frameworks/esp-idf-v5.0.1/components/soc/esp32/ld/esp32.peripherals.ld
CMake Warning (dev) at C:/MyProjects/FoxtrotFC/Device/src/Core/CMakeLists.txt:1 (add_library):
ADD_LIBRARY called with SHARED option but the target platform does not
support dynamic linking. Building a STATIC library instead. This may lead
to problems.
This warning is for project developers. Use -Wno-dev to suppress it.
CMake Warning (dev) at C:/MyProjects/FoxtrotFC/Shared/Core/CMakeLists.txt:1 (add_library):
ADD_LIBRARY called with SHARED option but the target platform does not
support dynamic linking. Building a STATIC library instead. This may lead
to problems.
This warning is for project developers. Use -Wno-dev to suppress it.
CMake Warning (dev) at C:/MyProjects/FoxtrotFC/lib/nanopb/CMakeLists.txt:1 (add_library):
ADD_LIBRARY called with SHARED option but the target platform does not
support dynamic linking. Building a STATIC library instead. This may lead
to problems.
This warning is for project developers. Use -Wno-dev to suppress it.
CMake Warning (dev) at C:/MyProjects/FoxtrotFC/lib/Fusion/CMakeLists.txt:3 (add_library):
ADD_LIBRARY called with SHARED option but the target platform does not
support dynamic linking. Building a STATIC library instead. This may lead
to problems.
This warning is for project developers. Use -Wno-dev to suppress it.
-- Components: Device app_trace app_update bootloader bootloader_support bt cmock console cxx driver efuse esp-tls esp_adc esp_app_format esp_common esp_eth esp_event esp_gdbstub esp_hid esp_http_client esp_http_server esp_https_ota esp_https_server esp_hw_support esp_lcd esp_local_ctrl esp_netif esp_partition esp_phy esp_pm esp_psram esp_ringbuf esp_rom esp_system esp_timer esp_wifi espcoredump esptool_py fatfs freertos hal heap
http_parser idf_test ieee802154 json log lwip main mbedtls mqtt newlib nvs_flash openthread partition_table perfmon protobuf-c protocomm pthread sdmmc soc spi_flash spiffs tcp_transport ulp unity usb vfs wear_levelling wifi_provisioning wpa_supplicant xtensa
-- Component paths: C:/MyProjects/FoxtrotFC/Device/Esp32/components/Device C:/Espressif/frameworks/esp-idf-v5.0.1/components/app_trace C:/Espressif/frameworks/esp-idf-v5.0.1/components/app_update C:/Espressif/frameworks/esp-idf-v5.0.1/components/bootloader C:/Espressif/frameworks/esp-idf-v5.0.1/components/bootloader_support C:/Espressif/frameworks/esp-idf-v5.0.1/components/bt C:/Espressif/frameworks/esp-idf-v5.0.1/components/cmock C:/Espressif/frameworks/esp-idf-v5.0.1/components/console C:/Espressif/frameworks/esp-idf-v5.0.1/components/cxx C:/Espressif/frameworks/esp-idf-v5.0.1/components/driver C:/Espressif/frameworks/esp-idf-v5.0.1/components/efuse C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp-tls C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_adc C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_app_format C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_common C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_eth C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_event C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_gdbstub C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_hid C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_http_client C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_http_server C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_https_ota C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_https_server C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_hw_support C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_lcd C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_local_ctrl C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_netif C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_partition C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_phy C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_pm C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_psram C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_ringbuf C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_rom C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_system C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_timer C:/Espressif/frameworks/esp-idf-v5.0.1/components/esp_wifi C:/Espressif/frameworks/esp-idf-v5.0.1/components/espcoredump C:/Espressif/frameworks/esp-idf-v5.0.1/components/esptool_py C:/Espressif/frameworks/esp-idf-v5.0.1/components/fatfs C:/Espressif/frameworks/esp-idf-v5.0.1/components/freertos C:/Espressif/frameworks/esp-idf-v5.0.1/components/hal C:/Espressif/frameworks/esp-idf-v5.0.1/components/heap C:/Espressif/frameworks/esp-idf-v5.0.1/components/http_parser C:/Espressif/frameworks/esp-idf-v5.0.1/components/idf_test C:/Espressif/frameworks/esp-idf-v5.0.1/components/ieee802154 C:/Espressif/frameworks/esp-idf-v5.0.1/components/json C:/Espressif/frameworks/esp-idf-v5.0.1/components/log C:/Espressif/frameworks/esp-idf-v5.0.1/components/lwip C:/MyProjects/FoxtrotFC/Device/Esp32/main C:/Espressif/frameworks/esp-idf-v5.0.1/components/mbedtls C:/Espressif/frameworks/esp-idf-v5.0.1/components/mqtt
C:/Espressif/frameworks/esp-idf-v5.0.1/components/newlib C:/Espressif/frameworks/esp-idf-v5.0.1/components/nvs_flash C:/Espressif/frameworks/esp-idf-v5.0.1/components/openthread C:/Espressif/frameworks/esp-idf-v5.0.1/components/partition_table C:/Espressif/frameworks/esp-idf-v5.0.1/components/perfmon C:/Espressif/frameworks/esp-idf-v5.0.1/components/protobuf-c C:/Espressif/frameworks/esp-idf-v5.0.1/components/protocomm C:/Espressif/frameworks/esp-idf-v5.0.1/components/pthread C:/Espressif/frameworks/esp-idf-v5.0.1/components/sdmmc C:/Espressif/frameworks/esp-idf-v5.0.1/components/soc C:/Espressif/frameworks/esp-idf-v5.0.1/components/spi_flash
C:/Espressif/frameworks/esp-idf-v5.0.1/components/spiffs C:/Espressif/frameworks/esp-idf-v5.0.1/components/tcp_transport C:/Espressif/frameworks/esp-idf-v5.0.1/components/ulp C:/Espressif/frameworks/esp-idf-v5.0.1/components/unity C:/Espressif/frameworks/esp-idf-v5.0.1/components/usb C:/Espressif/frameworks/esp-idf-v5.0.1/components/vfs C:/Espressif/frameworks/esp-idf-v5.0.1/components/wear_levelling C:/Espressif/frameworks/esp-idf-v5.0.1/components/wifi_provisioning C:/Espressif/frameworks/esp-idf-v5.0.1/components/wpa_supplicant C:/Espressif/frameworks/esp-idf-v5.0.1/components/xtensa
-- Configuring done
-- Generating done
-- Build files have been written to: C:/MyProjects/FoxtrotFC/Device/Esp32/build
[1/6] Performing build step for 'bootloader'
[1/1] cmd.exe /C "cd /D C:\MyProjects\FoxtrotFC\Device\Esp32\build\bootloader\esp-idf\esptool_py && C:\Espressif\python_env\idf5.0_py3.8_env\Scripts\python.exe C:/Espressif/frameworks/esp-idf-v5.0.1/components/partition_table/check_sizes.py --offset 0x8000 bootloader 0x1000 C:/MyProjects/FoxtrotFC/Device/Esp32/build/bootloader/bootloader.bin"
Bootloader binary size 0x6710 bytes. 0x8f0 bytes (8%) free.
[2/4] Linking CXX executable Esp32.elf
FAILED: Esp32.elf
cmd.exe /C "cd . && C:\Espressif\tools\xtensa-esp32-elf\esp-2022r1-11.2.0\xtensa-esp32-elf\bin\xtensa-esp32-elf-g++.exe -mlongcalls -Wno-frame-address @CMakeFiles\Esp32.elf.rsp -o Esp32.elf && cd ."
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::init()':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:27: multiple definition of `ILoraRadio::init()'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x64): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::ILoraRadio(Hal::SerialConnection&, unsigned short, unsigned short)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:15: multiple definition of `ILoraRadio::ILoraRadio(Hal::SerialConnection&, unsigned short, unsigned short)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x0): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::ILoraRadio(Hal::SerialConnection&, unsigned short, unsigned short)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:15: multiple definition of `ILoraRadio::ILoraRadio(Hal::SerialConnection&, unsigned short, unsigned short)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x0): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::~ILoraRadio()':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:22: multiple definition of `ILoraRadio::~ILoraRadio()'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x38): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::~ILoraRadio()':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:22: multiple definition of `ILoraRadio::~ILoraRadio()'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x38): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::~ILoraRadio()':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:22: multiple definition of `ILoraRadio::~ILoraRadio()'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x4c): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::getError(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:71: multiple definition of `ILoraRadio::getError(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x49c): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::expectResponse(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:122: multiple definition of `ILoraRadio::expectResponse(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned long)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x79c): first
defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::readData(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:32: multiple definition of `ILoraRadio::readData(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0x70): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(ILoraRadio.cpp.obj): in function `ILoraRadio::sendData(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned short)':
C:/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp:43: multiple definition of `ILoraRadio::sendData(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned short)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Device/src/Core/Sensors/ILoraRadio.cpp.obj:ILoraRadio.cpp:(.text+0xd4): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getProtoSize(_JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:184: multiple definition of `BlobUtils::getProtoSize(_JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x908): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::encodeProto(unsigned char*, unsigned int, _JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:172: multiple definition of `BlobUtils::encodeProto(unsigned char*, unsigned int, _JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x8bc): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getBlobFromProto(_CmdBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:252: multiple definition of `BlobUtils::getBlobFromProto(_CmdBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0xb2c): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getBlobFromProto(_NtfnBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:215: multiple definition of `BlobUtils::getBlobFromProto(_NtfnBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x9ac): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getBlobFromProto(_JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:196: multiple definition of `BlobUtils::getBlobFromProto(_JsonBlobProto const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x958): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getStringFromBlob(JsonBlob const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:16: multiple definition of `BlobUtils::getStringFromBlob(JsonBlob const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x0): first defined here
c:/espressif/tools/xtensa-esp32-elf/esp-2022r1-11.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/11.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(BlobUtils.cpp.obj): in function `BlobUtils::getBlobFromString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
C:/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp:31: multiple definition of `BlobUtils::getBlobFromString(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'; CMakeFiles/Esp32.elf.dir/C_/MyProjects/FoxtrotFC/Shared/Core/Blobs/BlobUtils.cpp.obj:BlobUtils.cpp:(.text+0x98): first defined here
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
我看到顶部有我怀疑的警告，但我不确定构建静态库会导致此问题。以下是警告：“使用 SHARED 选项调用 ADD_LIBRARY，但目标平台没有 支持动态链接。相反，构建一个静态库。这可能会导致 问题。”
我真的不知道问题出在哪里。任何帮助将非常感激。谢谢你。
更新：我已经弄清楚了。
主要问题是以下一行：
target_link_libraries(${COMPONENT_LIB} INTERFACE
DeviceLib)
不应使用接口。它需要是私人链接。但是，通过 PRIVATE 链接，“主”组件不会接收所需的标头。所以我最终做的是删除“Device”组件，将“main”直接链接到我的外部库。 “主”组件的 CMakeLists.txt 最终看起来如下所示，具有到“DeviceLib”的 PRIVATE 链接：
SET(PROJECT_SRC ${CMAKE_CURRENT_SOURCE_DIR}/../../..)
SET(DEVICE_SRC ${PROJECT_SRC}/Device/)
SET(DEVICE_HAL_SRC ${DEVICE_SRC}/src/Hal/Esp32)
SET(SHARED_SRC ${PROJECT_SRC}/Shared/)
SET(LIB_SRC ${PROJECT_SRC}/lib/)
idf_component_register(
SRCS
${DEVICE_SRC}/src/main.cpp
${CMAKE_CURRENT_SOURCE_DIR}/DeviceInit.cpp
${CMAKE_CURRENT_SOURCE_DIR}/Esp32Device.cpp
${DEVICE_HAL_SRC}/Esp32DeviceBaseHal.cpp
${DEVICE_HAL_SRC}/Esp32I2CConnection.cpp
${DEVICE_HAL_SRC}/Esp32Logging.cpp
${DEVICE_HAL_SRC}/Esp32PwmConnection.cpp
${DEVICE_HAL_SRC}/Esp32SerialConnection.cpp
${DEVICE_HAL_SRC}/Esp32Util.cpp
INCLUDE_DIRS
"."
${DEVICE_HAL_SRC}
REQUIRES driver esp_timer
)
add_subdirectory(${DEVICE_SRC}/src/Core ../build/Device)
add_subdirectory(${SHARED_SRC}/Core ../build/Shared)
add_subdirectory(${LIB_SRC}/nanopb ../build/nanopb)
add_subdirectory(${LIB_SRC}/arduinojson ../build/arduinojson)
add_subdirectory(${LIB_SRC}/Fusion ../build/Fusion)
target_link_libraries(${COMPONENT_LIB} PRIVATE
DeviceLib
)
本文讨论公共、私有和接口链接： https://cmake.org/pipermail/cmake/2016-May/063400.html