Error compilling for board AI Thinker ESP32-CAM

[quockhanh1198]

Hi @BugerDread , when I compile your project, I get error here, Can you help me, plss ???

Arduino: 1.8.13 (Linux), Board: "AI Thinker ESP32-CAM
Error:

libraries/esp32cam/esp32cam.cpp.o: In function esp32cam::CameraClass::begin(esp32cam::Config const&)': /home/khanh411/snap/arduino/50/.arduino15/packages/esp32/tools/xtensa-esp32-elf-gcc/1.22.0-80-g6c4433a-5.2.0/xtensa-esp32-elf/include/c++/5.2.0/bits/unique_ptr.h:76: multiple definition of esp32cam::CameraClass::begin(esp32cam::Config const&)'
sketch/esp32cam.cpp.o:sketch/esp32cam.cpp:12: first defined here
libraries/esp32cam/esp32cam.cpp.o: In function esp32cam::CameraClass::end()': esp32cam.cpp:(.text._ZN8esp32cam11CameraClass3endEv+0x0): multiple definition of esp32cam::CameraClass::end()'
sketch/esp32cam.cpp.o:esp32cam.cpp:(.text._ZN8esp32cam11CameraClass3endEv+0x0): first defined here
libraries/esp32cam/esp32cam.cpp.o: In function esp32cam::CameraClass::changeResolution(esp32cam::Resolution const&, int)': esp32cam.cpp:(.text._ZN8esp32cam11CameraClass16changeResolutionERKNS_10ResolutionEi+0x0): multiple definition of esp32cam::CameraClass::changeResolution(esp32cam::Resolution const&, int)'
sketch/esp32cam.cpp.o:esp32cam.cpp:(.text._ZN8esp32cam11CameraClass16changeResolutionERKNS_10ResolutionEi+0x0): first defined here
libraries/esp32cam/esp32cam.cpp.o: In function esp32cam::CameraClass::capture()': esp32cam.cpp:(.text._ZN8esp32cam11CameraClass7captureEv+0x0): multiple definition of esp32cam::CameraClass::capture()'
sketch/esp32cam.cpp.o:esp32cam.cpp:(.text._ZN8esp32cam11CameraClass7captureEv+0x0): first defined here
libraries/esp32cam/esp32cam.cpp.o: In function esp32cam::CameraClass::streamMjpeg(Client&, esp32cam::CameraClass::StreamMjpegConfig const&)': esp32cam.cpp:(.text._ZN8esp32cam11CameraClass11streamMjpegER6ClientRKNS0_17StreamMjpegConfigE+0x0): multiple definition of esp32cam::CameraClass::streamMjpeg(Client&, esp32cam::CameraClass::StreamMjpegConfig const&)'
sketch/esp32cam.cpp.o:esp32cam.cpp:(.text._ZN8esp32cam11CameraClass11streamMjpegER6ClientRKNS0_17StreamMjpegConfigE+0x0): first defined here
Multiple libraries were found for "WiFi.h"
Used: /home/khanh411/snap/arduino/50/.arduino15/packages/esp32/hardware/esp32/1.0.4/libraries/WiFi
libraries/esp32cam/esp32cam.cpp.o:(.bss._ZN8esp32cam6CameraE+0x0): multiple definition of esp32cam::Camera' Not used: /snap/arduino/50/libraries/WiFi sketch/esp32cam.cpp.o:(.bss._ZN8esp32cam6CameraE+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::detail::convertJpegQuality(int)':
/home/khanh411/snap/arduino/current/Arduino/libraries/esp32cam/src/internal/config.cpp:12: multiple definition of esp32cam::detail::convertJpegQuality(int)' sketch/config.cpp.o:sketch/config.cpp:12: first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::Config()':
config.cpp:(.text._ZN8esp32cam6ConfigC2Ev+0x0): multiple definition of esp32cam::Config::Config()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6ConfigC2Ev+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::Config()':
config.cpp:(.text._ZN8esp32cam6ConfigC2Ev+0x0): multiple definition of esp32cam::Config::Config()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6ConfigC2Ev+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::~Config()':
config.cpp:(.text._ZN8esp32cam6ConfigD2Ev+0x0): multiple definition of esp32cam::Config::~Config()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6ConfigD2Ev+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::~Config()':
config.cpp:(.text._ZN8esp32cam6ConfigD2Ev+0x0): multiple definition of esp32cam::Config::~Config()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6ConfigD2Ev+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setPins(esp32cam::Pins const&)':
config.cpp:(.text._ZN8esp32cam6Config7setPinsERKNS_4PinsE+0x0): multiple definition of esp32cam::Config::setPins(esp32cam::Pins const&)' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config7setPinsERKNS_4PinsE+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setResolution(esp32cam::Resolution const&)':
config.cpp:(.text._ZN8esp32cam6Config13setResolutionERKNS_10ResolutionE+0x0): multiple definition of esp32cam::Config::setResolution(esp32cam::Resolution const&)' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config13setResolutionERKNS_10ResolutionE+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setBufferCount(int)':
config.cpp:(.text._ZN8esp32cam6Config14setBufferCountEi+0x0): multiple definition of esp32cam::Config::setBufferCount(int)' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config14setBufferCountEi+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setRgb()':
config.cpp:(.text._ZN8esp32cam6Config6setRgbEv+0x0): multiple definition of esp32cam::Config::setRgb()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config6setRgbEv+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setYuv()':
config.cpp:(.text._ZN8esp32cam6Config6setYuvEv+0x0): multiple definition of esp32cam::Config::setYuv()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config6setYuvEv+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setGrayscale()':
config.cpp:(.text._ZN8esp32cam6Config12setGrayscaleEv+0x0): multiple definition of esp32cam::Config::setGrayscale()' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config12setGrayscaleEv+0x0): first defined here libraries/esp32cam/internal/config.cpp.o: In function esp32cam::Config::setJpeg(int)':
config.cpp:(.text._ZN8esp32cam6Config7setJpegEi+0x0): multiple definition of esp32cam::Config::setJpeg(int)' sketch/config.cpp.o:config.cpp:(.text._ZN8esp32cam6Config7setJpegEi+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::Frame()':
/home/khanh411/snap/arduino/current/Arduino/libraries/esp32cam/src/internal/frame.hpp:13: multiple definition of esp32cam::Frame::Frame()' sketch/frame.cpp.o:sketch/frame.hpp:13: first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::Frame()':
frame.cpp:(.text._ZN8esp32cam5FrameC2Ev+0x0): multiple definition of esp32cam::Frame::Frame()' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5FrameC2Ev+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::Frame(void*)':
frame.cpp:(.text._ZN8esp32cam5FrameC2EPv+0x0): multiple definition of esp32cam::Frame::Frame(void*)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5FrameC2EPv+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::Frame(void*)':
frame.cpp:(.text._ZN8esp32cam5FrameC2EPv+0x0): multiple definition of esp32cam::Frame::Frame(void*)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5FrameC2EPv+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::releaseFb()':
frame.cpp:(.text._ZN8esp32cam5Frame9releaseFbEv+0x0): multiple definition of esp32cam::Frame::releaseFb()' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame9releaseFbEv+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::~Frame()':
frame.cpp:(.text._ZN8esp32cam5FrameD2Ev+0x0): multiple definition of esp32cam::Frame::~Frame()' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5FrameD2Ev+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::~Frame()':
frame.cpp:(.text._ZN8esp32cam5FrameD2Ev+0x0): multiple definition of esp32cam::Frame::~Frame()' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5FrameD2Ev+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::writeToImpl(Print&, int, Client*)':
frame.cpp:(.text._ZN8esp32cam5Frame11writeToImplER5PrintiP6Client+0x0): multiple definition of esp32cam::Frame::writeToImpl(Print&, int, Client*)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame11writeToImplER5PrintiP6Client+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::writeTo(Print&, int)':
frame.cpp:(.text._ZN8esp32cam5Frame7writeToER5Printi+0x0): multiple definition of esp32cam::Frame::writeTo(Print&, int)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame7writeToER5Printi+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::writeTo(Client&, int)':
frame.cpp:(.text._ZN8esp32cam5Frame7writeToER6Clienti+0x0): multiple definition of esp32cam::Frame::writeTo(Client&, int)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame7writeToER6Clienti+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::isJpeg() const':
frame.cpp:(.text._ZNK8esp32cam5Frame6isJpegEv+0x0): multiple definition of esp32cam::Frame::isJpeg() const' sketch/frame.cpp.o:frame.cpp:(.text._ZNK8esp32cam5Frame6isJpegEv+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::toJpeg(int)':
frame.cpp:(.text._ZN8esp32cam5Frame6toJpegEi+0x0): multiple definition of esp32cam::Frame::toJpeg(int)' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame6toJpegEi+0x0): first defined here libraries/esp32cam/internal/frame.cpp.o: In function esp32cam::Frame::toBmp()':
frame.cpp:(.text._ZN8esp32cam5Frame5toBmpEv+0x0): multiple definition of esp32cam::Frame::toBmp()' sketch/frame.cpp.o:frame.cpp:(.text._ZN8esp32cam5Frame5toBmpEv+0x0): first defined here libraries/esp32cam/internal/resolution.cpp.o: In function esp32cam::Resolution::isValid() const':
/home/khanh411/snap/arduino/current/Arduino/libraries/esp32cam/src/internal/resolution.cpp:9: multiple definition of esp32cam::Resolution::isValid() const' sketch/resolution.cpp.o:sketch/resolution.cpp:9: first defined here libraries/esp32cam/internal/resolution.cpp.o: In function esp32cam::Resolution::getWidth() const':
resolution.cpp:(.text._ZNK8esp32cam10Resolution8getWidthEv+0x0): multiple definition of esp32cam::Resolution::getWidth() const' sketch/resolution.cpp.o:resolution.cpp:(.text._ZNK8esp32cam10Resolution8getWidthEv+0x0): first defined here libraries/esp32cam/internal/resolution.cpp.o: In function esp32cam::Resolution::getHeight() const':
resolution.cpp:(.text._ZNK8esp32cam10Resolution9getHeightEv+0x0): multiple definition of esp32cam::Resolution::getHeight() const' sketch/resolution.cpp.o:resolution.cpp:(.text._ZNK8esp32cam10Resolution9getHeightEv+0x0): first defined here libraries/esp32cam/internal/resolution.cpp.o: In function esp32cam::Resolution::find(int, int)':
resolution.cpp:(.text._ZN8esp32cam10Resolution4findEii+0x0): multiple definition of `esp32cam::Resolution::find(int, int)'
sketch/resolution.cpp.o:resolution.cpp:(.text._ZN8esp32cam10Resolution4findEii+0x0): first defined here
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board AI Thinker ESP32-CAM.

[martinsda]

Also happened to me, I closed all Arduino windows, reopen and all went well after that.
Were you able to solve your issue?

[BugerDread]

as I mentioned in #3 I did not used Arduino based FW for a while but I can give it a try again and check if it compiles OK with current versions of arduino/libz