Cannot open tensorflow2-lite-custom(/usr/lib/nnstreamer/filters/libnnstreamer_filter_tensorflow2-lite-custom.so)

[wooksong]

$ nnstreamer-check
NNStreamer version: 2.4.0
           loaded : TRUE
           path   : /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libnnstreamer.so

NNStreamer configuration:
============================================================
Configuration Loaded: TRUE
Configuration file path: /etc/nnstreamer.ini
    Candidates: envvar(NNSTREAMER_CONF): (null)
                build-config: /etc/nnstreamer.ini
                hard-coded: /etc/nnstreamer.ini
[Common]
  Enable envvar: TRUE
  Enable sym-linked subplugins: TRUE
[Filter]
  Filter paths from .ini: /usr/lib/nnstreamer/filters/
             from envvar: (null)
         from hard-coded: /usr/lib/nnstreamer/filters/

============================================================

** (nnstreamer-check:249927): CRITICAL **: 16:34:15.803: Cannot open tensorflow2-lite-custom(/usr/lib/nnstreamer/filters/libnnstreamer_filter_tensorflow2-lite-custom.so) with error libtensorflow2-lite-custom.so: cannot open shared object file: No such file or directory.

NNStreamer registered sub-plugins:
============================================================

[Filter]
  cpp
    - No custom property found
  tensorflow2-lite
    - NumThreads: Number of threads. Set 0 for default behaviors.
    - Delegate: TF-Lite delegation options: {'NNAPI', 'GPU', 'XNNPACK', 'External'}. Do not specify to disable delegation.
    - ExtDelegateLib: Path to external delegate shared library
    - ExtDelegateKeyVal: key/values pairs optional parameters for delegate. Format ExtDelegateKeyVal=key1#value1;key2#value2...

[Decoder]
  direct_video
    - No custom property found
  pose_estimation
    - No custom property found
  bounding_boxes
    - No custom property found
  image_labeling
    - No custom property found
  octet_stream
    - No custom property found
  tensor_region
    - No custom property found
  image_segment
    - No custom property found

[Conterver]

[Trainer]

============================================================

$ ldd /usr/lib/nnstreamer/filters/libnnstreamer_filter_tensorflow2-lite-custom.so
	linux-vdso.so.1 (0x00007ffe8e172000)
	libnnstreamer-single.so => /lib/x86_64-linux-gnu/libnnstreamer-single.so (0x00007f9de2105000)
	**libtensorflow2-lite-custom.so => not found**
	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f9de1fcb000)
	libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f9de1c00000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f9de1fab000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9de1800000)
	libgmodule-2.0.so.0 => /lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f9de1fa2000)
	libgobject-2.0.so.0 => /lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f9de1f42000)
	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f9de1ecc000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9de1b19000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f9de214f000)
	libffi.so.8 => /lib/x86_64-linux-gnu/libffi.so.8 (0x00007f9de1ebd000)

$ LD_PRELOAD=./build/ext/nnstreamer/tensor_filter/libtensorflow2-lite-custom.so nnstreamer-check
nnstreamer-check: symbol lookup error: ./build/ext/nnstreamer/tensor_filter/libtensorflow2-lite-custom.so: undefined symbol: _ZTVN10__cxxabiv117__class_type_infoE

[taos-ci]

cibot: Thank you for posting issue #4268. The person in charge will reply soon.

[myungjoo]

Yes.. custom tf-lite loading mechanism has some glitches and requires fixes.