Tensor Lite Micro Package Build issue

Hi @ QingChuanWS,

I am currently working on the RT-Thread Vision Board(cortex M85) Camera project. We are trying to run an open-source ML model ( MTTS-CAN) using the TensorFlow Lite Micro (TFLM) package on this board.

We have added the latest TFLM package to our project and tried building with both:

• (✔) Using TensorFlow Lite reference operations
• (✔) Using TensorFlow Lite CMSIS NN operations

However, during the build process, we are facing the following errors:

../packages/TensorflowLiteMicro-latest/tensorflow/lite/micro/tools/make/downloads/cmsis/CMSIS/NN/Source/BasicMathFunctions/arm_elementwise_add_s8.c:35:10: fatal error: arm_helium_utils.h: No such file or directory
   35 | #include "arm_helium_utils.h"
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [packages/TensorflowLiteMicro-latest/tensorflow/lite/micro/tools/make/downloads/cmsis/CMSIS/NN/Source/BasicMathFunctions/subdir.mk:21: packages/TensorflowLiteMicro-latest/tensorflow/lite/micro/tools/make/downloads/cmsis/CMSIS/NN/Source/BasicMathFunctions/arm_elementwise_add_s8.o] Error 1
make: *** Waiting for unfinished jobs....
"make -j8 all" terminated with exit code 2. Build might be incomplete.

System Details

• Board: RT-Thread Vision Board
• Processor: (Specify whether Cortex-M85)
• RT-Thread Version: (Run pkgs --list to get the version)
• TFLM Version: (Latest from RT-Thread package manager)

  Steps We've Tried

1. Verified CMSIS-NN is installed (pkgs --update)
2. Tested with older versions(v1.0.1, v1.0.0.0) of TFLM but build got failed for those also.

Despite these, we are still getting errors. Could you please provide any insights or suggest a fix?

Thanks!

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