Espressif Tensorflow Light Micro Build Issues

[bkgoodman]

Running Espressif's Tensorflow fork - I had followed the directions to build the doorbell_cam project and received a lot of errors (in the idf.py menuconfig or idf.py build) that third-party libraries (first was "gemmlowp") were missing. This simply required at:

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cp -r lite/micro/tools/make/downloads/* lite/micro/tools/make/gen/esp_xtensa-esp32/prj/doorbell_camera/esp-idf/components/tfmicro/third_party/

...to fix it. So it seems as though that step is missing - probable in the:

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make -f tensorflow/lite/micro/tools/make/Makefile TARGET=esp generate_doorbell_camera_esp_project

...step.

That said - Tensorflow Light Micro has since been moved into it's own repository: https://github.com/tensorflow/tflite-micro

The example would not build at all the the TFlite-micro repo - as there were numerous files missing (CMakeList.txt), etc. (Even the README.md instructions were incorrect - I believe). I assume Espressif's newest changes aren't in there - but advise they move over to this.