Errors while linking async example on PlatformIO

[pinomarcelo]

Sketch: AsyncDemo.ino
All recomendations where applied.

platformio.ini
[env:esp32doit-devkit-v1]
;[env:nodemcu-32s]
platform = espressif32
board = esp32doit-devkit-v1
framework = arduino
monitor_speed = 115200
lib_compat_mode = strict
lib_deps =
esphome/ESPAsyncWebServer-esphome@^3.3.0
ayushsharma82/ElegantOTA@^3.1.6
build_flags=-DELEGANTOTA_USE_ASYNC_WEBSERVER=1

Trying to compile sketch i get this:

Executing task in folder Prueba OTA ESP32: C:\Users\pinom.platformio\penv\Scripts\platformio.exe run

Processing esp32doit-devkit-v1 (platform: espressif32; board: esp32doit-devkit-v1; framework: arduino)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via -v, --verbose option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/esp32doit-devkit-v1.html
PLATFORM: Espressif 32 (6.9.0) > DOIT ESP32 DEVKIT V1
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
DEBUG: Current (cmsis-dap) External (cmsis-dap, esp-bridge, esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:

• framework-arduinoespressif32 @ 3.20017.0 (2.0.17)
• tool-esptoolpy @ 1.40501.0 (4.5.1)
• toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch5
  LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
  LDF Modes: Finder ~ chain, Compatibility ~ strict
  Found 38 compatible libraries
  Scanning dependencies...
  Dependency Graph
  |-- ESPAsyncWebServer-esphome @ 3.3.0
  |-- ElegantOTA @ 3.1.6
  |-- ESPAsyncWebServer @ 3.3.22
  |-- WiFi @ 2.0.0
  Building in release mode
  Linking .pio\build\esp32doit-devkit-v1\firmware.elf
  c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebRequest.cpp.o): in function AsyncWebServerRequest::_onPoll()': E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebRequest.cpp:155: multiple definition of AsyncWebServerRequest::_onPoll()'; .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebRequest.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebRequest.cpp:190: first defined here
  c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebRequest.cpp.o): in function AsyncWebServerRequest::_onAck(unsigned int, unsigned int)': E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebRequest.cpp:170: multiple definition of AsyncWebServerRequest::_onAck(unsigned int, unsigned int)'; .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebRequest.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebRequest.cpp:197: first defined here
  c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebRequest.cpp.o): in function AsyncWebServerRequest::_onError(signed char)': E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebRequest.cpp:185: multiple definition of AsyncWebServerRequest::_onError(signed char)';
  .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebRequest.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebRequest.cpp:210: first defined here
  c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebRequest.cpp.o): in function AsyncWebServerRequest::_onTimeout(unsigned int)': E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebRequest.cpp:189: multiple definition of AsyncWebServerRequest::_onTimeout(unsigned int)'; .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebRequest.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebRequest.cpp:214: first defined here
  c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebRequest.cpp.o): in function `AsyncWebServerRequest::onDisconnect(std::function<void ()>)':
  ......
  ......
  ElegantOTA issues.txt

E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebAuthentication.cpp:118: multiple definition of generateDigestHash(char const*, char const*, char const*)'; .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebAuthentication.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebAuthentication.cpp:112: first defined here c:/users/pinom/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pio\build\esp32doit-devkit-v1\lib0c8\libESPAsyncWebServer.a(WebAuthentication.cpp.o): in function checkDigestAuthentication(char const*, char const*, char const*, char const*, char const*, bool, char const*, char const*, char const*)':
E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer/src/WebAuthentication.cpp:141: multiple definition of `checkDigestAuthentication(char const*, char const*, char const*, char const*, char const*, bool, char const*, char const*, char const*)'; .pio\build\esp32doit-devkit-v1\lib9c8\libESPAsyncWebServer-esphome.a(WebAuthentication.cpp.o):E:\Descargas\Google Drive\DESARROLLO\PRUEBAS\Prueba OTA ESP32/.pio/libdeps/esp32doit-devkit-v1/ESPAsyncWebServer-esphome/src/WebAuthentication.cpp:144: first defined here
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\esp32doit-devkit-v1\firmware.elf] Error 1
========================================================================================= [FAILED] Took 15.46 seconds =========================================================================================

• The terminal process "C:\Users\pinom.platformio\penv\Scripts\platformio.exe 'run'" terminated with exit code: 1.
• Terminal will be reused by tasks, press any key to close it.

[euphi]

Solution: Stick to the last version of EleganOTA before they forked the Async Libraries. So just change your platformio.ini to

lib_deps=
        ElegantOTA@=3.1.1

[Eilgnaw]

try use ESPAsyncWebServer

[pinomarcelo]

@euphi thanks a lot! It is working now.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[BenjaminDerProgrammierer]

It isn't a real solution to just downgrade the version, someone should fix it... Although it works...

Just commenting to remove Stale status

[ayushsharma82]

@pinomarcelo ‘s dependency graphs shows mixing of AsyncWebServer dependencies.

Dependency Graph
|-- ESPAsyncWebServer-esphome @ 3.3.0
|-- ElegantOTA @ 3.1.6
|-- ESPAsyncWebServer @ 3.3.22
|-- WiFi @ 2.0.0

1. Make sure there is not an existing AsyncWebServer dependency installed in your project if you are using PIO. PlatformIO will automatically install recommended dependencies required by ElegantOTA v3.
2. AsyncWebServer-esphome is no longer recommended. We have switched to a well maintained fork.
3. Clear your .pio/libdeps folder time to time after you have done changes in your platform.ini.