無法在OSx上的firebreath項目中鏈接libmtp

Question

我使用firebreath框架編寫了一個功能正常的插件。我需要爲它添加MTP讀寫支持。

經過一番研究，我登陸了libmtp（http://libmtp.sourceforge.net/）。我下載了構建它的源代碼，並能夠運行這些示例並讀取/寫入MTP設備。

接下來我嘗試在我的Firebreath插件項目中添加使用這個lib。我可以編譯好，但我得到下面的鏈接器錯誤。我已經將libusb.a和libiconv.a文件的目錄添加到搜索庫路徑中。

我使用Mac版本的端口（須藤端口安裝libmtp +通用）

注也試過：使用libmtp你需要libiconv的，和libusb的安裝

這裏是鏈接錯誤即時通訊xcode。

Undefined symbols for architecture i386: 
    "_libiconv", referenced from: 
     _ptp_unpack_string in libmtp.a(libmtp_la-ptp.o) 
     _ptp_pack_string in libmtp.a(libmtp_la-ptp.o) 
     _utf16_to_utf8 in libmtp.a(libmtp_la-unicode.o) 
     _utf8_to_utf16 in libmtp.a(libmtp_la-unicode.o) 
    "_libiconv_close", referenced from: 
     _LIBMTP_Release_Device in libmtp.a(libmtp_la-libmtp.o) 
    "_libiconv_open", referenced from: 
     _LIBMTP_Open_Raw_Device_Uncached in libmtp.a(libmtp_la-libmtp.o) 
    "_libusb_bulk_transfer", referenced from: 
     _ptp_write_func in libmtp.a(libmtp_la-libusb1-glue.o) 
     _ptp_usb_getdata in libmtp.a(libmtp_la-libusb1-glue.o) 
     _ptp_read_func in libmtp.a(libmtp_la-libusb1-glue.o) 
     _ptp_usb_event in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_claim_interface", referenced from: 
     _init_ptp_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_clear_halt", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _close_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_close", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _close_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_control_transfer", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _ptp_usb_control_cancel_request in libmtp.a(libmtp_la-libusb1-glue.o) 
     _init_ptp_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
     _close_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_detach_kernel_driver", referenced from: 
     _init_ptp_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_free_config_descriptor", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_free_device_list", referenced from: 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_bus_number", referenced from: 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_config_descriptor", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_device", referenced from: 
     _dump_usbinfo in libmtp.a(libmtp_la-libusb1-glue.o) 
     _get_playlist_extension in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_device_address", referenced from: 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_device_descriptor", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _dump_usbinfo in libmtp.a(libmtp_la-libusb1-glue.o) 
     _get_playlist_extension in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_device_list", referenced from: 
     _LIBMTP_Check_Specific_Device in libmtp.a(libmtp_la-libusb1-glue.o) 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_get_string_descriptor_ascii", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_init", referenced from: 
     _LIBMTP_Check_Specific_Device in libmtp.a(libmtp_la-libusb1-glue.o) 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_kernel_driver_active", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _dump_usbinfo in libmtp.a(libmtp_la-libusb1-glue.o) 
     _init_ptp_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_open", referenced from: 
     _probe_device_descriptor in libmtp.a(libmtp_la-libusb1-glue.o) 
     _init_ptp_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_release_interface", referenced from: 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
     _close_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_reset_device", referenced from: 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
     _close_usb in libmtp.a(libmtp_la-libusb1-glue.o) 
    "_libusb_set_debug", referenced from: 
     _LIBMTP_Check_Specific_Device in libmtp.a(libmtp_la-libusb1-glue.o) 
     _LIBMTP_Detect_Raw_Devices in libmtp.a(libmtp_la-libusb1-glue.o) 
     _configure_usb_device in libmtp.a(libmtp_la-libusb1-glue.o) 
ld: symbol(s) not found for architecture i386 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

Answer 1

它不會只是鏈接的其他庫自動...實際上你需要其他的庫添加到您的target_link_libraries聲明。