Giters

githubharald / CTCWordBeamSearch

Connectionist Temporal Classification (CTC) decoder with dictionary and language model.

Home Page:https://harald-scheidl.medium.com/b051d28f3d2e

Repository from Github https://github.comgithubharald/CTCWordBeamSearchRepository from Github https://github.comgithubharald/CTCWordBeamSearch

undefined symbol

sushantag9 opened this issue · comments

commented

If you create a new issue, please provide the following information:

  1. Which program causes the problem
  • Custom TF operation
  • C++ test program
  • Python prototype
  1. Versions
  • TensorFlow version : 2.2.0
  • Python version : 3.7
  • C++ compiler
  • Operating system : Ubuntu 18.04
  1. Issue
  • tensorflow.python.framework.errors_impl.NotFoundError: CTCWordBeamSearch/cpp/proj/TFWordBeamSearch.so: undefined symbol: _ZN10tensorflow12OpDefBuilder4AttrESs
commented

For others finding this issue....

I also got undefined symbol errors when loading the wordbeamsearch custom operation. I resolved this by using Tensorflow 1.3 in both the CTCWordBeamSearch project for compiling the operation, as well as in the simpleHTR project.

You can use pip to install very old, specific versions of packages using this method. For instance:
pip install --ignore-installed --upgrade https://files.pythonhosted.org/packages/7c/9f/57e1404fc9345759e4a732c4ab48ab4dd78fd1e60ee1270442b8850fa75f/tensorflow-1.3.0-cp36-cp36m-manylinux1_x86_64.whl

I was working within a Docker image based on the python:3.6-slim image.