stm32mpu-ai: tensorflow-lite: backport recipe from github st main

Current recipe build was failing due to dependencies with cpuinfo header files and
libraries. This commit backports the recipe that is currently being built in the
ST main branch in GitHub which clears these dependencies.

The recipe was backported as it was in commit with SHA256:
fc56201c67adf899080cff5b45ed33824e427609

https://onedigi.atlassian.net/browse/CCS-12

Signed-off-by: David Escalona <david.escalona@digi.com>

meta-digi-dey/dynamic-layers/stm32mpu-ai/recipes-frameworks/tensorflow-lite/files/0006-TFLite-cmake-add-XNNPACK-delegate-u8-and-i8-definition.patch

@@ -0,0 +1,25 @@
+From c8af5997f3d9b851ff81ef1fb4045ec59f80d976 Mon Sep 17 00:00:00 2001
+From: Alexis BRISSON <alexis.brisson@st.com>
+Date: Wed, 10 May 2023 16:44:47 +0200
+Subject: [PATCH 1/1] TFLite add XNNPACK delegate u8 and i8 definition
+
+Signed-off-by: Alexis BRISSON <alexis.brisson@st.com>
+---
+ tensorflow/lite/CMakeLists.txt | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/tensorflow/lite/CMakeLists.txt b/tensorflow/lite/CMakeLists.txt
+index 073b29c4860..b3b89a4236c 100644
+--- a/tensorflow/lite/CMakeLists.txt
++++ b/tensorflow/lite/CMakeLists.txt
+@@ -404,6 +404,8 @@ if(TFLITE_ENABLE_XNNPACK)
+     TFLITE_DELEGATES_XNNPACK_SRCS
+     FILTER ".*(_test|_tester)\\.(cc|h)"
+   )
++  add_definitions( -DXNNPACK_DELEGATE_ENABLE_QS8=1 )
++  add_definitions( -DXNNPACK_DELEGATE_ENABLE_QU8=1 )
+   list(APPEND TFLITE_TARGET_DEPENDENCIES
+     XNNPACK
+   )
+-- 
+2.25.1

meta-digi-dey/dynamic-layers/stm32mpu-ai/recipes-frameworks/tensorflow-lite/files/0007-TFLite-fix-aarch64-support-for-XNNPACK.patch

@@ -0,0 +1,44 @@
+From 78cbe3bb1970982adf32c9966b83789301d45cd8 Mon Sep 17 00:00:00 2001
+From: Maxence GUILHIN <maxence.guilhin@st.com>
+Date: Mon, 10 Jul 2023 15:47:59 +0200
+Subject: [PATCH 1/1] tensorflow-lite : fix aarch64 support for XNNPACK
+
+The "-mcpu=" switch might be introduced externaly into CMake: either in <LANG>_FLAGS or
+as part of CC, CXX, ASM environmental variables (to be stored in CMAKE_<LANG>_COMPILER_ARG1).
+This switch is not compatible with XNNPACK build mechanism and causes the XNNPACK compilation
+break due to "unsupported instructions". This switch needs to be removed for XNNPACK
+In order to isolate the changes only for XNNPACK and its depencencies, a subfolder is
+introduced.
+
+Signed-off-by: Maxence GUILHIN <maxence.guilhin@st.com>
+---
+ tensorflow/lite/tools/cmake/modules/xnnpack.cmake | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+diff --git a/tensorflow/lite/tools/cmake/modules/xnnpack.cmake b/tensorflow/lite/tools/cmake/modules/xnnpack.cmake
+index 24f0674cf92..028fc3a76e2 100644
+--- a/tensorflow/lite/tools/cmake/modules/xnnpack.cmake
++++ b/tensorflow/lite/tools/cmake/modules/xnnpack.cmake
+@@ -38,6 +38,20 @@ endif()
+ set(XNNPACK_BUILD_TESTS OFF CACHE BOOL "Disable XNNPACK test.")
+ set(XNNPACK_BUILD_BENCHMARKS OFF CACHE BOOL "Disable XNNPACK benchmarks.")
+
++#  The "-mcpu=" switch might be introduced externaly into CMake: either in <LANG>_FLAGS or
++#  as part of CC, CXX, ASM environmental variables (to be stored in CMAKE_<LANG>_COMPILER_ARG1).
++#  This switch is not compatible with XNNPACK build mechanism and causes the XNNPACK compilation
++#  break due to "unsupported instructions". This switch needs to be removed for XNNPACK
++#  In order to isolate the changes only for XNNPACK and its depencencies, a subfolder is
++#  introduced.
++
++foreach(FLAG IN ITEMS CMAKE_ASM_FLAGS CMAKE_ASM_COMPILER_ARG1 CMAKE_C_FLAGS CMAKE_C_COMPILER_ARG1 CMAKE_CXX_FLAGS CMAKE_CXX_COMPILER_ARG1)
++  if(${FLAG})
++    string(REGEX REPLACE "-mcpu=[-a-zA-Z0-9_.^$*+?]*" "" _tmp ${${FLAG}})
++    set(${FLAG} ${_tmp})
++  endif()
++endforeach()
++
+ # The following line adds project of PTHREADPOOL, FP16 and XNNPACK which are
+ # needed to compile XNNPACK delegate of TFLite.
+ add_subdirectory(
+--
+2.25.1

meta-digi-dey/dynamic-layers/stm32mpu-ai/recipes-frameworks/tensorflow-lite/files/0008-TFLite-cmake-change-visibility-compilation-options.patch

@@ -0,0 +1,30 @@
+From 0675ef8a401c5f77aeb674b006594190c7f58810 Mon Sep 17 00:00:00 2001
+From: Othmane AHL ZOUAOUI <othmane.ahlzouaoui@st.com>
+Date: Wed, 20 Mar 2024 15:05:40 +0100
+Subject: [PATCH 8/8] TFLite: cmake: change visibility compilation options
+
+Changing the compile options of the libtensorflow-lite shared lib
+to export all the symbols of the lib and make them visible during
+the runtime.
+
+Change-Id: I25a88a3ba29b00d1f40336e10acb898ab8b016a5
+Signed-off-by: Othmane AHL ZOUAOUI <othmane.ahlzouaoui@st.com>
+---
+ tensorflow/lite/CMakeLists.txt | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/tensorflow/lite/CMakeLists.txt b/tensorflow/lite/CMakeLists.txt
+index 40812886306..f7bb65d894a 100644
+--- a/tensorflow/lite/CMakeLists.txt
++++ b/tensorflow/lite/CMakeLists.txt
+@@ -517,6 +517,8 @@ set(_ALL_TFLITE_SRCS
+ add_library(tensorflow-lite SHARED EXCLUDE_FROM_ALL
+   ${_ALL_TFLITE_SRCS}
+ )
++target_compile_options(tensorflow-lite PRIVATE -fvisibility=hidden)
++target_compile_options(tensorflow-lite PRIVATE -fvisibility=default)
+ set(_ALL_TFLITE_HDRS ${_ALL_TFLITE_SRCS})
+ list(FILTER _ALL_TFLITE_HDRS INCLUDE REGEX ".*\\.h$")
+ target_include_directories(tensorflow-lite
+--
+2.34.1

meta-digi-dey/dynamic-layers/stm32mpu-ai/recipes-frameworks/tensorflow-lite/tensorflow-lite_git.bbappend

@@ -0,0 +1,47 @@
+# Copyright (C) 2024, Digi International Inc.
+
+FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
+
+SRC_URI += " file://0006-TFLite-cmake-add-XNNPACK-delegate-u8-and-i8-definition.patch "
+SRC_URI += " file://0008-TFLite-cmake-change-visibility-compilation-options.patch "
+SRC_URI:append:stm32mp2common = " file://0007-TFLite-fix-aarch64-support-for-XNNPACK.patch "
+
+# Set building environment variables
+TENSORFLOW_TARGET:aarch64="linux"
+TENSORFLOW_TARGET_ARCH:aarch64="aarch64"
+
+# Activate -O3 optimization and disable debug symbols
+OECMAKE_C_FLAGS_RELEASE = "-O3 -DNDEBUG"
+OECMAKE_CXX_FLAGS_RELEASE = "-O3 -DNDEBUG"
+# Build tensorflow-lite.so library, _pywrap_tensorflow_interpreter_wrapper.so library and the benchmark_model application
+OECMAKE_TARGET_COMPILE =  "tensorflow-lite _pywrap_tensorflow_interpreter_wrapper benchmark_model"
+
+EXTRA_OECMAKE += " -DTFLITE_ENABLE_XNNPACK=OFF "
+
+do_compile() {
+    # Standard CMAKE build.
+    cmake_runcmake_build --target ${OECMAKE_TARGET_COMPILE}
+	# Build the python wheel (procedure extract form the build_pip_package_with_cmake.sh)
+	BUILD_DIR=${WORKDIR}/build
+	TENSORFLOW_DIR=${S}
+	TENSORFLOW_LITE_DIR="${TENSORFLOW_DIR}/tensorflow/lite"
+	TENSORFLOW_VERSION=$(grep "_VERSION = " "${TENSORFLOW_DIR}/tensorflow/tools/pip_package/setup.py" | cut -d= -f2 | sed "s/[ '-]//g")
+	mkdir -p "${BUILD_DIR}/tflite_runtime"
+	cp -r "${TENSORFLOW_LITE_DIR}/tools/pip_package/debian" \
+	      "${TENSORFLOW_LITE_DIR}/tools/pip_package/MANIFEST.in" \
+	      "${BUILD_DIR}"
+	cp -r "${TENSORFLOW_LITE_DIR}/python/interpreter_wrapper" "${BUILD_DIR}"
+	cp "${TENSORFLOW_LITE_DIR}/tools/pip_package/setup_with_binary.py" "${BUILD_DIR}/setup.py"
+	cp "${TENSORFLOW_LITE_DIR}/python/interpreter.py" \
+	   "${TENSORFLOW_LITE_DIR}/python/metrics/metrics_interface.py" \
+	   "${TENSORFLOW_LITE_DIR}/python/metrics/metrics_portable.py" \
+	   "${BUILD_DIR}/tflite_runtime"
+	echo "__version__ = '${TENSORFLOW_VERSION}'" >> "${BUILD_DIR}/tflite_runtime/__init__.py"
+	echo "__git_version__ = '$(git -C "${TENSORFLOW_DIR}" describe)'" >> "${BUILD_DIR}/tflite_runtime/__init__.py"
+
+	export PACKAGE_VERSION="${TENSORFLOW_VERSION}"
+	export PROJECT_NAME="tflite_runtime"
+	cp "${BUILD_DIR}/_pywrap_tensorflow_interpreter_wrapper.so" "tflite_runtime"
+
+	setuptools3_do_compile
+}