Complex ESP-IDF dependencies seem to break pio build script - TypeError: ‘NoneType’ object is not iterable

[nicklasb]

Hi!
Thanks for a great product!
I have an issue where I have ESP-IDF components with their own dependencies seemingly causing problems for Platformio. The reason I think that may be the case, is that it doesn’t seem to break in running idf.py build in the same folder.
ESP-IDF doesn’t seem to mind the current config.

It doesn’t compile without errors there, but that is not the problem. Abbreviated, the error is:

TypeError: 'NoneType' object is not iterable:
for cg in target_compile_groups:

It happens in espidf.py, line 614.

If I monkey-patch the script to return [] if it is None, the script continues. But I am not sure it works properly then as I get a lot of other problems, though, so there seems to be some case that isn’t covered or something.

The repository is at: GitHub - nicklasb/NMEA_Gateway

Note that the project itself has ESP-IDF-dependencies, and that this problem only occurs when I add the nmea-gateway component. If I remove it, the pio build scripts works.

I am probably doing something crazy somewhere, but I don’t get it, I have spent a lot of time trying to fix this problem now…

(Original post att PlatformIO for reference: https://community.platformio.org/t/complex-esp-idf-dependencies-seem-to-break-pio-build-script-typeerror-nonetype-object-is-not-iterable/34881/1)

[valeros]

Hi @nicklasb, could you please provide a minimal project to reproduce the issue? Some of idf_component.yml in https://github.com/nicklasb/NMEA_Gateway contain links to private repositories (e.g. https://github.com/nicklasb/RobArch.git).

[nicklasb]

Hi @nicklasb, could you please provide a minimal project to reproduce the issue? Some of idf_component.yml in https://github.com/nicklasb/NMEA_Gateway contain links to private repositories (e.g. https://github.com/nicklasb/RobArch.git).

Oh, I am so sorry, I forgot I had changed to that repo, I have pushed a fix for that now and checked that the error persists!

With regards to minimal project, I know it is annoying, but that is it.
I have tried a lot to make it happen with less, but for some reason I can't make it happen in another way.

If you have any tricks or something you want me to try, please say it.

[valeros]

Even though you didn't mentioned I suppose I should clone the project from the Server_dev branch, right? Anyway, it seems I managed to reproduce the issue, but I had to remove the nmea-service component because CMake complained that there is an include path missing:

Include directory
  '../NMEA_Gateway/components/nmea-service/include'
  is not a directory.

The issue is probably caused by a typo in the CMakeFile.txt for the nmea-gateway component. You specified src/*.c in the GLOB, but there are no .c files, only .cpp.

[nicklasb]

OMG that was it! Thanks!!
(and again, sorry bout the mess, I accidentally pushed to the Server-dev branch)

When I fix the nmea-service component CMakeLists.txt it builds and runs!!!
I promise I have looked at that d*mn file a thousand times!!

I couldn't understand that it was that, since it worked in ESP-IDF.

(WRT the nmea-service it has no files at all yet, it will mostly be .c there, probably no .cpp.

That said, Platform IO behaves differently from ESP-IDF in this case, as ESP-IDF works with the "wrong" CMakeLists.txt.
The error in the build script is a crash, and a crash that instead should have some kind of error message.
Maybe you'll ge att PR from me on that.

Either way, thanks a bunch!!