openfst | Read-only unofficial mirror of OpenFst

I have successfully setup and run the Kaldi Aspire recipe on my WSL. Now i was working on a POC where i want to extend the ASPIRE recipe by making a new corpus, dictionary, language model and merge it with the original HCLG.fst. I followed this blog post. I have been able to sucessfully create the new dictionary, language model and merged the input files. However i am getting the following error when i try to recompile the HCLG.fst with new Lexicon and grammar.

I work with external C++ libraries (OpenFst). I add them into the include path so I can get IntelliSense, GoToDefinition/GoToDeclaration, etc.

Some of these external libraries include code smells and YCM diagnostic is reporting a lot of warnings. I want to get warnings for the code I develop, but I want to suppress the warnings from the OpenFST library (and other libraries I use as a dependency).

Is there a way to keep the Intellisense and suppress Diagnostics for a specific library?

Link to my .ycm_extra_conf.py with OpenFst added to the include path

Python code:

I'm developing a Tensorflow sequence model that uses a beam search through an OpenFST decoding graph (loaded from a binary file) over the logits output from a Tensorflow sequence model.

I've written a custom op that allows me to perform decoding over the logits, but each time, I'm having the op call fst::Read(BINARY_FILE) before performing the decoding. This might be fine as long as it stays small but I'd like to avoid the I/O overhead.

I've read through the Tensorflow custom op and tried to find similar examples but I'm still lost. Basically, what I want to do in the graph is:

I'm trying to compile a tensorflow custom op that requires OpenFST (http://www.openfst.org/twiki/bin/view/FST/WebHome). However, I'm running into compilation errors where I run:

(Noob alert here---I'm not really a C++ programmer, just finding myself needing to reimplement some C++ code in Java.)

I am attempting to understand the following function from OpenFST as part of an effort to enable reading of OpenFST binary files in JOpenFST:

I have heard many good things about OpenFST, yet I struggle with making it work. I am constructing an FST automaton (fstcompile) that I want to use as an acceptor to check if a set of strings are matching (very much alike regular expressions but with the advantages provided by optimizations of the automatons provided by OpenFST). And here is the thing:
How to check if the resulting automaton accepts a string?
I found a suggestion that the input string shall be turned into a simple automaton and composed with the accepting automaton to get a result. I found it highly cumbersome and strange. Is there an easier way (either via cmd line or Python/C++)?

I was trying to install OpenFST Python extension according to this guide. There were two options for doing this.
The 1st option one was to issue --enable-python during configuration of OpenFst, which I tried and failed.
So I went for the 2nd option. I successfully installed OpenFST with these commands:

In OpenFST web site it says that;

The OpenFst library is a C++ template library. From C++, include in the installation include directory and link to libfst.so in the installation library directory.

My code consists of only this for the sake of simplicity;