TFLite: cyclic dependency error Tflite simple opaque delegate

[suyash-narain]

I am using tf v2.14 and would like to build tflite opaque delegate such that its references are included in the tflite shared library libtensorflowlite.so

when i include simple_opaque_delegate build targets in the tflite BUILD file //tensorflow/lite/BUILD, I get the cyclic dependency error:

ERROR: /tensorflow/tensorflow/lite/BUILD:479:23: in cc_library rule //tensorflow/lite:framework_stable: cycle in dependency graph:
    //tensorflow/lite:libtensorflowlite.so (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
    //tensorflow/lite/kernels:builtin_ops_all_linked (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
.-> //tensorflow/lite:framework_stable (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite:cc_api_stable (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/delegates/external:external_delegate (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/delegates/utils:simple_opaque_delegate (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/c:c_api_experimental (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/c:c_api (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/core/c:c_api (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite:create_op_resolver_with_builtin_ops (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/core:create_op_resolver_with_builtin_ops (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/core/kernels:builtin_ops (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/kernels:builtin_op_kernels (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
|   //tensorflow/lite/kernels:variable_op_kernels (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
`-- //tensorflow/lite:framework_stable (adc6a2edc02c0f50690f56ac867f112f9172c147f91c4ef0c8b89d477f7c8720)
ERROR: analysis of target '//tensorflow/lite:libtensorflowlite.so' failed; build aborted

I add the build target below this line: https://github.com/tensorflow/tensorflow/blob/50d63587561074139dba4053c8023d5ea8fd6cf7/tensorflow/lite/BUILD#L750 adding it as a dep to build the tensorflowlite shared library //tensorflow/lite/delegates/utils:simple_opaque_delegate

how do i ensure simple_opaque_delegate is built and its symbols present in the tensorflowlite shared library? If i replace simple_opaque_delegate with simple_delegate, i don't get this error though and shared library builds perfectly. thanks

[LakshmiKalaKadali]

Hi @suyash-narain, As per my knowledge, the error you are encountering is a classic cyclic dependency issue when building the TensorFlow Lite library. First try the following commands to resolve the cyclic dependency. git submodule foreach git clean -dfx git submodule update and instead of including simple_opaque_delegate directly in libtensorflowlite.so, try to build it as a separate static library. This library can then be linked with applications that need the delegate functionality, without requiring it to be part of the core TensorFlow Lite library. Have you tried with latest TF 2.16.1 stable version?. If not resolved with this, please help us with reproducible code to resolve the issue. Thank You

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