How to build TFLM with Cmake and trace Makefile for specific target?

[aidevmin]

My question is same as the title. Because some time, I want to add another library to run TFLM on PC. As my understanding, currently Makefile is used to build the TFLM, but it is quite difficult to trace and understand.

I trace Makefile for this example https://github.com/tensorflow/tflite-micro/tree/main/tensorflow/lite/micro/examples/person_detection
I run Makefile target make -f tensorflow/lite/micro/tools/make/Makefile person_detection_bin but I could not trace what Makefile is called and what exact finally command is executed (command likes as follow: g++ gen/person_detection_bin lib-tensorflowlite.a to generate target binary person_detection_bin).

Moreover I tried to add custom operators to TFLM, it depends on static library and some .cc, .h. Because I dont know Makefile is too verbosed and I did not know exact the Makefile and what command is executed in Makefile ==> I could not add custom operator.
Thank you

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