arduino缓存multiple definition报错

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#缓存

博客内容涉及 Arduino ESP32 开发中遇到的编译问题。错误信息指出在编译过程中存在重复定义的问题，具体为 `MySampleMp3` 变量。作者建议检查并删除 `src` 目录下可能导致冲突的文件，然后重新编译以解决问题。

esp32

编译报错信息：

C:\Users\......\Temp\arduino_build_26414\sketch\src\myMp3Data.cpp.o:(.data.MySampleMp3+0x0): multiple definition of `MySampleMp3'
C:\Users\......\Temp\arduino_build_26414\sketch\Vs1053Test.ino.cpp.o:(.data.MySampleMp3+0x0): first defined here

按照目录进去，把里面的全删了或根据指定文件删除，再编译

C:\Users\......\Temp\arduino_build_26414\sketch\src

Neo Wordsworth
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简要记录C++ "multiple definition of .. first defined here"的解决过程
代码出现如下错误： Arduino:1.8.13 (Windows 10), 开发板："Arduino Uno" libraries\Keypad\Key.cpp.o (symbol from plugin): In function `Key::Key()': (.text+0x0): multiple definition of `Key::Key()' sketch\Key.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Key.cpp.o (symbol from plugin): In function `Key::Key()': (.text+0x0): multiple definition of `Key::Key()' sketch\Key.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Key.cpp.o (symbol from plugin): In function `Key::Key()': (.text+0x0): multiple definition of `Key::Key(char)' sketch\Key.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Key.cpp.o (symbol from plugin): In function `Key::Key()': (.text+0x0): multiple definition of `Key::Key(char)' sketch\Key.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Key.cpp.o (symbol from plugin): In function `Key::Key()': (.text+0x0): multiple definition of `Key::key_update(char, KeyState, bool)' sketch\Key.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::begin(char*)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::scanKeys()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::isPressed(char)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::findInList(char)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::findInList(int)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::getState()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::keyStateChanged()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::numKeys()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::setDebounceTime(unsigned int)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::setHoldTime(unsigned int)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::addEventListener(void (*)(char))' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::transitionTo(unsigned char, KeyState)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::nextKeyState(unsigned char, bool)' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::updateList()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::getKeys()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::getKey()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\Keypad\Keypad.cpp.o (symbol from plugin): In function `Keypad::Keypad(char*, unsigned char*, unsigned char*, unsigned char, unsigned char)': (.text+0x0): multiple definition of `Keypad::waitForKey()' sketch\Keypad.cpp.o (symbol from plugin):(.text+0x0): first defined here collect2.exe: error: ld returned 1 exit status exit status 1 为开发板 Arduino Uno 编译时出错。 在文件 -> 首选项开启 “编译过程中显示详细输出”选项 这份报告会包含更多信息。
11-17
multiple definition of `Key::Key()' sketch\Key.cpp.o: first defined here ... collect2.exe: error: ld returned 1 exit status ``` 这类错误属于 **“多重定义（Multiple Definition）”链接错误**，说明： ...
C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:29: multiple definition of `neoPixelActive'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:29: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:40: multiple definition of `pixels'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:40: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:38: multiple definition of `u8g2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:38: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:95: multiple definition of `lastPressTime'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:95: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:93: multiple definition of `ChangeRequested2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:93: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:92: multiple definition of `ChangeRequested1'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:92: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:91: multiple definition of `ChangeRequested'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:91: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:80: multiple definition of `channelGroup_3'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:80: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:79: multiple definition of `channelGroup_2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:79: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:78: multiple definition of `channelGroup_1'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:78: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:76: multiple definition of `current'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:76: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:73: multiple definition of `current_Mode'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:73: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\neopixel.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:30: multiple definition of `oledBrightness'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:30: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:38: multiple definition of `u8g2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:38: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:40: multiple definition of `pixels'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:40: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:95: multiple definition of `lastPressTime'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:95: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:93: multiple definition of `ChangeRequested2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:93: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:92: multiple definition of `ChangeRequested1'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:92: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:91: multiple definition of `ChangeRequested'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:91: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:80: multiple definition of `channelGroup_3'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:80: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:79: multiple definition of `channelGroup_2'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:79: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:78: multiple definition of `channelGroup_1'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:78: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:76: multiple definition of `current'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:76: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:73: multiple definition of `current_Mode'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/config.h:73: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:30: multiple definition of `oledBrightness'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:30: first defined here C:/Users/User/AppData/Local/Arduino15/packages/esp32/tools/esp-x32/2507-cn/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\setting.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:29: multiple definition of `neoPixelActive'; C:\Users\User\AppData\Local\arduino\sketches\B3B65D78ACE8E14DEEF95657DA31A9A5\sketch\RfClown.ino.cpp.o:E:\Arduino_Project\RF-Clown-main\RfClown/setting.h:29: first defined here collect2.exe: error: ld returned 1 exit status exit status 1 Compilation error: exit status 1
11-21
我们正在处理一个Arduino编译错误，具体是"multiple definition"（多重定义）错误。根据用户提供的引用，错误信息显示同一个变量（如`MySampleMp3`）或函数（如`blink_program_init`）在多个文件中被定义，导致链接...
new.cpp.o (symbol from plugin): In function `operator new(unsigned int)': (.text+0x0): multiple definition of `std::nothrow' C:\Users\WUHUAN\AppData\Local\arduino\sketches\5F6C9F789FBAD53EED515DF2155D32BB\libraries\ArduinoSTL\new_handler.cpp.o (symbol from plugin):(.text+0x0): first defined here collect2.exe: error: ld returned 1 exit status exit status 1 Compilation error: exit status 1
06-23
在解决`Arduino compilation error multiple definition of std::nothrow ArduinoSTL library conflict`的问题时，需要深入分析库冲突的根本原因，并采取适当的措施来解决问题。 #### 1. 问题分析 当出现`multiple ...
Tone.cpp.o (symbol from plugin): In function `timer0_pin_port': (.text+0x0): multiple definition of `__vector_7' C:\Users\15374\AppData\Local\arduino\sketches\D57065C25B7D46F5145BCDDA511C6682\sketch\IRremote.cpp.o (symbol from plugin):(.text+0x0): first defined here collect2.exe: error: ld returned 1 exit status exit status 1 Compilation error: exit status 1
最新发布
11-28
// 清除串口缓存 while (Serial.available() > 0) Serial.read(); handleSerialCmd(cmd, temp, humi); } // 3. 蜂鸣器报警逻辑 if (isBuzzerAlarm && !isnan(temp) && temp > tempThreshold) { digitalWrite...
在platformio.ini中内容为在[env:esp32dev] platform = espressif32 board = esp32dev framework = arduino lib_deps = marcoschwartz/LiquidCrystal_I2C@^1.1.4 olikraus/U8g2@^2.35.5 bblanchon/ArduinoJson@^6.21.3 arduino-libraries/NTPClient@^3.2.1 是这里导致的报错吗
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2. 当出现 `multiple definition of` 链接错误时应如何处理？ 3. 如何为不同的构建环境配置不同的库版本？ 4. PlatformIO 的库依赖解析算法是怎样的？ 5. 如何强制重新下载某个特定库？ 6. 本地开发的库如何集成...
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arduino IDE在打开时会出现闪退，重启电脑也不行，有时重装电脑也不解决不了。 解决办法是把C:\Users\Administrator\AppData\Local\Arduino15文件夹下的文件全删除了，然后重新就可以打开IDE。 有的同学会说电脑上找不到C:\Users\Administrator\AppData\Local\Arduino15这个路劲，可以把路径直接黏贴在计算机的路劲框里，如下图： 也可以在计算机C盘的搜索框里搜索Arduino15，如下图： ...
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multiple definition of 一.multiple definition of 问题解决方法1.给每一个头文件加上条件编译：2.使用extern定义全局变量：3.使用Static修饰： 一.multiple definition of 问题解决方法 在编写代码时，我想让两个接口的函数从公用一个，现在分为两个来使用，但是函数的名字相同，放在两个不同的C文件中， 编译后发现，在链接的时候，出现如下错误： multiple definition of `函数名’ 分析是因为两个函数重复定义了，我将
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