Updated CI to use bazelisk and install bazel into /usr/local/bin.

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
           ref: ${{ inputs.trigger-sha }}
       - name: Install dependencies
         run: |
-          sudo ci/install_bazel.sh
+          sudo ci/install_bazelisk.sh
           pip3 install Pillow
           pip3 install Wave
       - name: Test
@@ -53,7 +53,7 @@ jobs:
           ref: ${{ inputs.trigger-sha }}
       - name: Install dependencies
         run: |
-          sudo ci/install_bazel.sh
+          sudo ci/install_bazelisk.sh
           pip3 install Pillow
           pip3 install Wave
       - name: Test
@@ -73,7 +73,7 @@ jobs:
           ref: ${{ inputs.trigger-sha }}
       - name: Install dependencies
         run: |
-          sudo ci/install_bazel.sh
+          sudo ci/install_bazelisk.sh
           pip3 install Pillow
           pip3 install Wave
       - name: Test
@@ -93,7 +93,7 @@ jobs:
           ref: ${{ inputs.trigger-sha }}
       - name: Install dependencies
         run: |
-          sudo ci/install_bazel.sh
+          sudo ci/install_bazelisk.sh
           pip3 install Pillow
           pip3 install Wave
       - name: Test
@@ -318,4 +318,4 @@ jobs:
         run: |
           tensorflow/lite/micro/tools/ci_build/test_makefile.sh
           cd ../
-          tflite-micro/tensorflow/lite/micro/tools/ci_build/test_x86_no_tflite_static_memory.sh tflite-micro/
+          tflite-micro/tensorflow/lite/micro/tools/ci_build/test_x86_no_tflite_static_memory.sh tflite-micro/

.github/workflows/sync.yml

@@ -25,15 +25,15 @@ jobs:
 
     steps:
       - uses: actions/setup-python@v4
-        with: 
+        with:
           python-version: '3.10'
       - uses: actions/checkout@v2
         with:
           token: ${{ secrets.TFLM_BOT_REPO_TOKEN }}
 
       - name: Install dependencies for sync
         run: |
-          sudo ./ci/install_bazel.sh
+          sudo ./ci/install_bazelisk.sh
           pip3 install numpy
 
       - name: Sync the code

.github/workflows/tests_entry.yml

@@ -7,14 +7,14 @@
 # - If ci:ready_to_merge is on the PR and the pull_request_target type is synchronize not triggered
 #   by the mergify[bot] user, remove label and fail job.
 # - If ci:ready_to_merge label is on PR and pull_request_target type is labeled, run the test scripts.
-# 
+#
 # The end result is labeling ci:run or ci:ready_to_merge will run the test scripts,
-# If Mergify merges to the PR, the test scripts will run. If anyone else tries to add 
+# If Mergify merges to the PR, the test scripts will run. If anyone else tries to add
 # a commit to the PR or merge , the script will fail and ci:ready_to_merge will be
 # removed.
 #
-# This script runs the test scripts directly. Scheduled or manual runs use 
-# run_<scriptname>.yml as the entry point. 
+# This script runs the test scripts directly. Scheduled or manual runs use
+# run_<scriptname>.yml as the entry point.
 
 name: Tests Entry Point
 on:

CONTRIBUTING.md

@@ -168,6 +168,9 @@ Below are some tips that might be useful and improve the development experience.
 * Get a copy of [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint)
   or install it:
 
+* Install Pillow and Wave.  For example, [here](ci/Dockerfile.micro) is what we
+  do for the TFLM continuous integration Docker container.
+
   ```
   pip install cpplint
   ```
@@ -204,7 +207,7 @@ Below are some tips that might be useful and improve the development experience.
 1.  Run all the tests for x86, and any other platform that you are modifying.
 
     ```
-    tensorflow/lite/micro/tools/ci_build/test_x86.sh
+    tensorflow/lite/micro/tools/ci_build/test_x86_default.sh
     ```
 
     Please check the READMEs in the optimized kernel directories for specific

ci/Dockerfile.micro

@@ -50,5 +50,5 @@ RUN pip install six
 RUN pip install pyyaml requests psutil robotframework==4.0.1
 
 COPY ci/*.sh /install/
-RUN /install/install_bazel.sh
+RUN /install/install_bazelisk.sh
 RUN /install/install_buildifier.sh

ci/install_bazel.sh

@@ -14,27 +14,9 @@
 # limitations under the License.
 # ==============================================================================
 
-# Select bazel version.
-BAZEL_VERSION="5.1.1"
-
-set +e
-local_bazel_ver=$(bazel version 2>&1 | grep -i label | awk '{print $3}')
-
-if [[ "$local_bazel_ver" == "$BAZEL_VERSION" ]]; then
-  exit 0
-fi
-
 set -e
+wget https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64
+mv bazelisk-linux-amd64 bazel
+chmod +x bazel
+sudo mv bazel /usr/local/bin
 
-# Install bazel.
-mkdir -p /bazel
-cd /bazel
-if [[ ! -f "bazel-$BAZEL_VERSION-installer-linux-x86_64.sh" ]]; then
-  curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/$BAZEL_VERSION/bazel-$BAZEL_VERSION-installer-linux-x86_64.sh
-fi
-chmod +x /bazel/bazel-*.sh
-/bazel/bazel-$BAZEL_VERSION-installer-linux-x86_64.sh
-rm -f /bazel/bazel-$BAZEL_VERSION-installer-linux-x86_64.sh
-
-# Enable bazel auto completion.
-echo "source /usr/local/lib/bazel/bin/bazel-complete.bash" >> ~/.bashrc

ci/install_bazelisk.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+set -e
+wget https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64
+mv bazelisk-linux-amd64 bazel
+chmod +x bazel
+sudo mv bazel /usr/local/bin
+