Add tools and workflows.

.github/workflows/commit.yml

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+name: '📜 Check Commit Messages'
+
+on:
+  pull_request:
+    types:
+      - opened
+      - edited
+      - reopened
+      - synchronize
+    branches:    
+      - 'master'
+
+jobs:
+  check-commit-messages:
+    runs-on: ubuntu-latest
+    steps:
+      - name: '📜 Check commit messages format'
+        uses: gsactions/commit-message-checker@v2
+        with:
+          pattern: '^[A-Za-z]+.+ .+\.$'
+          flags: 'gm'
+          error: 'Commit subject line must match the following pattern: <description".">'
+          excludeTitle: 'false'
+          excludeDescription: 'true'
+          checkAllCommitMessages: 'true'
+          accessToken: ${{ secrets.GITHUB_TOKEN }}
+      - name: '📜 Check commit messages length'
+        uses: gsactions/commit-message-checker@v2
+        with:
+          pattern: '^[^#].{10,78}$'
+          error: 'Commit subject line maximum line length of 78 characters is exceeded.'
+          excludeTitle: 'false'
+          excludeDescription: 'true'
+          checkAllCommitMessages: 'true'
+          accessToken: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/tflm.yml

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+name: '🔥 Build TFLM'
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+    branches:    
+      - 'main'
+    paths:
+      - 'src/**'
+      - '.github/workflows/*.yml'
+      - '.github/workflows/*.json'
+      - '!**/README.md'
+      - '!**.rst'
+
+  pull_request:
+    branches:    
+      - 'main'
+    paths:
+      - 'src/**'
+      - '.github/workflows/*.yml'
+      - '.github/workflows/*.json'
+      - '!**/README.md'
+      - '!**.rst'
+
+jobs:
+  build-tflm:
+    runs-on: ubuntu-20.04
+
+    strategy:
+      matrix:
+        target: [cortex-m7+fp]
+      fail-fast: false
+
+    steps:
+    - name: '⏳ Checkout main'
+      uses: actions/checkout@v4
+      with:
+        submodules: false
+
+    - name: '⏳ Checkout TFLM'
+      uses: actions/checkout@v4
+      with:
+        submodules: false
+        path: tflite-micro-repo
+        repository: tensorflow/tflite-micro
+        ref: 8c458fc48ee972ea4fc56ddc08849823b9af7ea8
+
+    - name: '♻ Caching dependencies'
+      uses: actions/[email protected]
+      id: cache
+      with:
+        path: ~/cache/gcc
+        key: 'arm-gnu-toolchain-13.2.rel1'
+
+    - name: '🛠 Install toolchain '
+      if: steps.cache.outputs.cache-hit != 'true'
+      run: source tools/ci.sh && ci_install_arm_gcc
+
+    - name: '🛠 Install dependencies'
+      run: |
+        python -m pip install --upgrade pip numpy==1.24 Pillow==10.3
+
+    - name: '🏗 Build TFLM'
+      run: source tools/ci.sh && ci_build_target ${{ matrix.target }}
+
+    - name: '🏗 Build headers'
+      run: source tools/ci.sh && ci_build_headers
+
+    - name: '⬆ Upload libraries'
+#      if: github.event_name != 'pull_request'
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ matrix.target }}
+        path: ${{ matrix.target }}
+        if-no-files-found: error
+
+    - name: '⬆ Upload headers'
+      uses: actions/upload-artifact@v4
+      with:
+        path: tflite-micro
+        if-no-files-found: error
+
+  commit-artifacts:
+    needs: build-tflm
+    runs-on: ubuntu-20.04
+#    if: github.event_name == 'push'
+    permissions:
+      contents: write
+      pull-requests: write
+
+    steps:
+    - name: '⏳ Checkout repository'
+      uses: actions/checkout@v4
+      with:
+        submodules: false
+
+    - name: '⬇ Download artifacts'
+      uses: actions/download-artifact@v4
+
+#    - name: '🤌 Commit artifacts'
+#      run: |
+#        git config --local user.name "github-actions[bot]"
+#        git config --local user.email "github-actions[bot]@users.noreply.github.com"
+#        git add .
+#        git commit -m "Add build artifacts"
+
+    - name: Create Pull Request
+      uses: peter-evans/create-pull-request@v5
+      with:
+        base: main
+        branch: update_tflm
+        title: Update tflm libraries and headers.
+        commit-message: Update tflm libraries and headers.
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

tools/ci.sh

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+#!/bin/bash
+# This file is part of the OpenMV project.
+#
+# Copyright (c) 2024 Ibrahim Abdelkader <[email protected]>
+# Copyright (c) 2024 Kwabena W. Agyeman <[email protected]>
+#
+# This work is licensed under the MIT license, see the file LICENSE for details.
+
+# Install ARM GCC.
+########################################################################################
+TOOLCHAIN_PATH=${HOME}/cache/gcc
+TOOLCHAIN_URL="https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-13.2.rel1-x86_64-arm-none-eabi.tar.xz"
+
+ci_install_arm_gcc() {
+    mkdir -p ${TOOLCHAIN_PATH}
+    wget --no-check-certificate -O - ${TOOLCHAIN_URL} | tar --strip-components=1 -Jx -C ${TOOLCHAIN_PATH}
+    export PATH=${TOOLCHAIN_PATH}/bin:${PATH}
+    arm-none-eabi-gcc --version
+}
+
+# Update Submodules.
+########################################################################################
+ci_update_submodules() {
+  git submodule update --init --depth=1 --no-single-branch
+}
+
+# Build Targets.
+########################################################################################
+ci_build_target() {
+    TARGET=${1}
+    mkdir -p ${TARGET}
+    export PATH=${TOOLCHAIN_PATH}/bin:${PATH}
+    pushd tflite-micro-repo
+#    make -j$(nproc) -f tensorflow/lite/micro/tools/make/Makefile \
+#                       TARGET=cortex_m_generic TARGET_ARCH=${TARGET} OPTIMIZED_KERNEL_DIR=cmsis_nn \
+#                       TARGET_TOOLCHAIN_ROOT=${TOOLCHAIN_PATH}/bin/ TARGET_TOOLCHAIN_PREFIX=arm-none-eabi- \
+#                       BUILD_TYPE=release CORE_OPTIMIZATION_LEVEL=-O2 MICROLITE_LIB_NAME=libtflm.a microlite
+    popd
+    touch ${TARGET}/libtflm.a
+#    mv tflite-micro-repo/gen/*/lib/libtflm.a ${TARGET}
+
+}
+
+# Build Headers.
+########################################################################################
+ci_build_headers() {
+    HEADERS_PATH="tflite-micro"
+    rm -fr ${HEADERS_PATH}
+    mkdir -p ${HEADERS_PATH}
+    pushd tflite-micro-repo
+    headers=$(make -j$(nproc) -f tensorflow/lite/micro/tools/make/Makefile \
+                                 TARGET=cortex_m_generic TARGET_ARCH=cortex-m7+fp OPTIMIZED_KERNEL_DIR=cmsis_nn \
+                                 TARGET_TOOLCHAIN_ROOT=${TOOLCHAIN_PATH}/bin/ TARGET_TOOLCHAIN_PREFIX=arm-none-eabi- \
+                                 BUILD_TYPE=release list_library_headers list_third_party_headers)
+
+    popd
+
+    readarray -d ' ' -t files <<< $headers
+    for file in "${files[@]}"; do
+        echo ${file}
+        mkdir -p ${HEADERS_PATH}/$(dirname ${file})
+        cp tflite-micro-repo/${file} ${HEADERS_PATH}/${file}
+    done
+}