failing bld tflite_vx_delegate

[Sergey-Coral]

It appears to be missing StringRef definition:

-- Generating done
-- Build files have been written to: /home/ubuntu/flexbuild/components_lsdk2406/apps/ml/tflite_vx_delegate/build_debian_arm64
[  0%] Building CXX object CMakeFiles/vx_delegate.dir/delegate_main.cc.o
[  0%] Building CXX object CMakeFiles/vx_delegate.dir/op_map.cc.o
In file included from /home/ubuntu/flexbuild/components_lsdk2406/apps/ml/tflite/tensorflow/lite/kernels/internal/reference/reference_ops.h:83,
                 from /home/ubuntu/flexbuild/components_lsdk2406/apps/ml/tflite_vx_delegate/delegate_main.cc:38:
/home/ubuntu/flexbuild/components_lsdk2406/apps/ml/tflite/tensorflow/lite/kernels/internal/reference/string_comparisons.h:30:36: error: 'StringRef' does not name a type; did you mean 'string'?
   30 | inline bool StringRefEqualFn(const StringRef& lhs, const StringRef& rhs) {
      |                                    ^~~~~~~~~
      |                                    string
/home/ubuntu/flexbuild/components_lsdk2406/apps/ml/tflite/tensorflow/lite/kernels/internal/reference/string_comparisons.h:30:58: error: 'StringRef' does not name a type; did you mean 'string'?
   30 | inline bool StringRefEqualFn(const StringRef& lhs, const StringRef& rhs) {
      |                                                          ^~~~~~~~~
      |                                                          string

I'm running inside Docker on Ubuntu 22.04.4 LTS.

[Sergey-Coral]

It appears that some testing header files get in the way of the build.
If I remove flexbuild/components_lsdk2412/apps/ml/tflite/tensorflow/lite/testing and flexbuild/build_lsdk2412/apps/apps_arm64_debian_desktop/usr/include/tensorflow, the build succeeds.

[Sergey-Coral]

Namely flexbuild/components_lsdk2412/apps/ml/tflite/tensorflow/lite/testing/string_util.h instead of being installed under flexbuild/build_lsdk2412/apps/apps_arm64_debian_desktop/usr/include/tensorflow/lite/testing overwrites the file flexbuild/build_lsdk2412/apps/apps_arm64_debian_desktop/usr/include/tensorflow/lite/string_util.h.

[Sergey-Coral]

This line seems to cause the problem:

flexbuild/src/apps/ml/tflite.mk

Line 54 in c8b29a0

find . -name "*.h" | xargs -I {} cp {} $(DESTDIR)/usr/include/tensorflow/lite && \

Here is a working version:
find . -name "*.h" | grep -v lite/testing | xargs -I {} cp {} $(DESTDIR)/usr/include/tensorflow/lite && \