Building 0.5.1 from source / errors within libakaze.so related to OpenCV

All,

I'm building 0.5.1 from source, with a few other packages from source. Everything has compiled fine, but when I go to run opensfm to try the berlin example, I get the following error:

bentleykw@centos:~/src/SupportPackages/build$ opensfm
Traceback (most recent call last):
  File "/home/bentleykw/src/SupportPackages/bin/opensfm", line 4, in <module>
    __import__('pkg_resources').run_script('opensfm==0.4.0', 'opensfm')
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/pkg_resources/__init__.py", line 651, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/pkg_resources/__init__.py", line 1448, in run_script
    exec(code, namespace, namespace)
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/EGG-INFO/scripts/opensfm", line 10, in <module>
    from opensfm import commands
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/opensfm/commands/__init__.py", line 2, in <module>
    from . import extract_metadata
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/opensfm/commands/extract_metadata.py", line 5, in <module>
    from opensfm import dataset
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/opensfm/dataset.py", line 13, in <module>
    from opensfm import io
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/opensfm/io.py", line 20, in <module>
    from opensfm import features
  File "/home/bentleykw/src/SupportPackages/lib/python3.9/site-packages/opensfm-0.4.0-py3.9.egg/opensfm/features.py", line 10, in <module>
    from opensfm import pyfeatures
ImportError: /home/bentleykw/src/SupportPackages/build/opensfm/src/opensfm/opensfm/src/third_party/akaze/libakaze.so: undefined symbol: _ZTVN2cv11_InputArrayE

Any advice? C++filt translates that symbol to vtable for cv::_InputArray, but ldd shows everything linked correctly to the opencv libs. I'm more of a c++ expert than python, so I'm not really sure what's causing the error.

Any advice? Using gcc 9, opencv 4.5.2, and python 3.9.

Thanks!

Start by reproducing the opensfm command and trace its import through opensfm/features.py to third_party/akaze/libakaze.so. Inspect the OpenCV 4.5.2 libraries linked by libakaze.so and the undefined _InputArray symbol. Done means the source build imports and launches without this OpenCV-related error.