Failed to resolve component 'mdns' (IDFGH-11204)

[piti-diablotin]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1.1

Operating System used.

Linux

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

None

What is the expected behavior?

I followed the guide on how to integrate arduino-esp32 in idf.
In the documentation it is mention we can install the component in global component directory so this is what I did.
In ~esp-idf/components I did

cd components && \
git clone https://github.com/espressif/arduino-esp32.git arduino && \
cd arduino && \
git submodule update --init --recursive 

Then in a fresh new project, when I run idf.py menuconfig I expect the command to display menuconfig with arduino option as describe in documentation

What is the actual behavior?

Instead I got this error when running idf.py menuconfig

Executing action: menuconfig
Running cmake in directory /home/diablotin/Codes/ESP32/toto/build
Executing "cmake -G 'Unix Makefiles' -DPYTHON_DEPS_CHECKED=1 -DPYTHON=/home/diablotin/.espressif/python_env/idf5.1_py3.11_env/bin/python -DESP_PLATFORM=1 -DCCACHE_ENABLE=0 /home/diablotin/Codes/ESP32/toto"...
-- IDF_TARGET not set, using default target: esp32
-- Found Git: /usr/bin/git (found version "2.42.0") 
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/diablotin/.espressif/tools/xtensa-esp32-elf/esp-12.2.0_20230208/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/diablotin/.espressif/tools/xtensa-esp32-elf/esp-12.2.0_20230208/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/diablotin/.espressif/tools/xtensa-esp32-elf/esp-12.2.0_20230208/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- git rev-parse returned 'fatal : ni ceci ni aucun de ses répertoires parents n'est un dépôt git : .git'
-- Could not use 'git describe' to determine PROJECT_VER.
-- Building ESP-IDF components for target esp32
Dependencies lock doesn't exist, solving dependencies.
Updating lock file at /home/diablotin/Codes/ESP32/toto/dependencies.lock
Processing 1 dependencies:
[1/1] idf (5.1.1)
CMake Error at /home/diablotin/Codes/esp-idf/tools/cmake/build.cmake:266 (message):
  Failed to resolve component 'mdns'.
Call Stack (most recent call first):
  /home/diablotin/Codes/esp-idf/tools/cmake/build.cmake:302 (__build_resolve_and_add_req)
  /home/diablotin/Codes/esp-idf/tools/cmake/build.cmake:595 (__build_expand_requirements)
  /home/diablotin/Codes/esp-idf/tools/cmake/project.cmake:547 (idf_build_process)
  CMakeLists.txt:8 (project)


-- Configuring incomplete, errors occurred!
cmake failed with exit code 1

Steps to reproduce.

• git clone https://github.com/espressif/esp-idf.git tags/v5.1.1
• cd ~esp-idf/components

cd components && \
git clone https://github.com/espressif/arduino-esp32.git arduino && \
cd arduino && \
git submodule update --init --recursive 

• idf.py create-project toto && cd toto && idf.py menuconfig

Build or installation Logs.

Running on Manjaro

More Information.

I tried to add an extra directory for component but did not change a thing.
I am for sure missing something but cannot figure out what

[igrr]

The issue is probably in arduino-esp32's CMakeLists.txt:

arduino-esp32/CMakeLists.txt

Line 212 in 1f1a9ae

set(requires spi_flash mbedtls mdns wifi_provisioning wpa_supplicant esp_adc esp_eth http_parser)

Over there, mdns component is added as a dependency of arduino-esp32 component, but idf_component.yml doesn't declare a dependency on espressif/mdns.

To fix this, mdns has to be removed from the list of requirements and added to idf_component.yml.

[igrr]

Also, we really should have a CI job to verify that arduino-esp32 can be successfully used as a component in an plain IDF project (without the lib-builder).

[me-no-dev]

Also, we really should have a CI job to verify that arduino-esp32 can be successfully used as a component in an plain IDF project (without the lib-builder).

We have it on 4.4 and was turned off here a while ago because there was no way to do it at the time (5.1 as master). Will turn it on again and make sure dependencies are properly declared.

[piti-diablotin]

Thanks for the fast fix !

I still have one question. When I follow procedure, I have an error about FREERTOS frequency being 100 instead of 1000.
I changed it by hand in sdkconfig but I was wondering if there is something better to do ?

Otherwise it works fine ! 👍

[me-no-dev]

you can have a sdkconfig.defaults file in the root of your project with contents CONFIG_FREERTOS_HZ=1000. This will ensure that you always have it set to the proper value