Building failed with error: 'WordAlignLatticePartial' was not declared in this scope

[hbasafa]

Hi, I was trying to build vosk-api docker image using this docker file from vosk-server.

After building the kaldi image, it tries to build vosk-api, and then uses the vosk-server to serve the models. The vosk-api modules are build by running the following command:

    git clone https://github.com/alphacep/vosk-api /opt/vosk-api \
    && cd /opt/vosk-api/src \
    && KALDI_MKL=$KALDI_MKL KALDI_ROOT=/opt/kaldi make -j $(nproc) \
    && cd /opt/vosk-api/python \
    && python3 ./setup.py install 

which is noted here.

This line failed with error:

recognizer.cc: In member function 'const char* Recognizer::PartialResult()': 
recognizer.cc:752:13: error: 'WordAlignLatticePartial' was not declared in this scope 
                        WordAlignLatticePartial(clat, *model_->trans_model_, *model_->winfo_, 0, &aligned_lat); 
                         ^~~~~~~~~~~~~~~~~~~~~~~ 
make: *** [Makefile:112: recognizer.o] Error 1 
make: *** Waiting for unfinished jobs....

I have review the file: recognizer.cc and it's true; there is no definition for the function WordAlignLatticePartial.

Thanks for any help.

[nshmyrev]

Looks like you are trying to use incompatible kaldi version. Our branch has this method.

[hbasafa]

Yes, that was true. The vosk image was using the cashed kaldi image which was the old one. I just rebuilt my kaldi image by cleaning the cashed one, and it got build without any error. Thanks.

I recommend to anybody facing this issue to build and run their docker file with this option: --no-cache. It will mostly fix this issue.

[jtojnar]

Specifically, it looks like it needs vosk branch from this fork: https://github.com/alphacep/kaldi, according to https://alphacephei.com/vosk/install#building-the-library-libvoskso.

@nshmyrev is there any plan to eventually upstream these changes?

[nshmyrev]

@jtojnar thanks for asking. sure, there is a plan, we already pushed some changes upstream. No definite deadlines though

[PureTryOut]

Is there any progress on upstreaming things? I managed to compile the master branch of kaldi, but the vosk branch in the fork has all kinds of compilation issues. Could it at least be rebased every once and while? 😅

[Moore123]

IMHO: maybe [ WordAlignLatticePartial ] in the code segment for android , but it's should be [WordAlignLattice] for x86-linux.

[nshmyrev]

@PureTryOut what issues do you see exactly? It compiles well here.