One 、 install Bazel

1 - download
2 - Copy and unzip
3 - Installation dependency

sudo apt-get install build-essential openjdk-8-jdk

If you can't locate openjdk-8-jdk Should be apt The source of the problem , Revise it yourself , You can refer to my previous blog

4 - compile

env EXTRA_BAZEL_ARGS="--host_javabase=@local_jdk//:jdk" bash ./compile.sh

It will take longer , Wait patiently （ Turn on maximum performance mode ）

5 - The generated bazel Files in PATH Directory

sudo cp output/bazel /usr/local/bin/

Check the

bazel --version

Two 、Mediapipe install

1 - download

git clone https://github.com/google/mediapipe.git

2 - Upload and unzip

3 - Installation dependency

sudo apt install -y python3-dev
sudo apt install -y cmake

4 - Delete unnecessary modules
Get into mediapipe Under the folder , Remove unnecessary modules and flags

cd mediapipe
sed -i -e "/\"imgcodecs\"/d;/\"calib3d\"/d;/\"features2d\"/d;/\"highgui\"/d;/\"video\"/d;/\"videoio\"/d" third_party/BUILD
sed -i -e "/-ljpeg/d;/-lpng/d;/-ltiff/d;/-lImath/d;/-lIlmImf/d;/-lHalf/d;/-lIex/d;/-lIlmThread/d;/-lrt/d;/-ldc1394/d;/-lavcodec/d;/-lavformat/d;/-lavutil/d;/-lswscale/d;/-lavresample/d" third_party/BUILD

5 - modify BUILD file

open /mediapipe/third_party/BUILD

# Locate the 
“WITH_WEBP”: “OFF”,

#  Add the following two sentences after ：
“ENABLE_NEON”: “OFF”,
“WITH_TENGINE”: “OFF”,

6 - modify OpenCV and FFMpeg The compiled file of
stay mediapipe Execute the following code

sed -i "s/x86_64-linux-gnu/aarch64-linux-gnu/g" third_party/opencv_linux.BUILD
sed -i "s/x86_64-linux-gnu/aarch64-linux-gnu/g" third_party/ffmpeg_linux.BUILD

7 - Install compiler protobuf-compiler
download , Note that linux-aarch64.zip ending

And then protobuf-compilerv3.19.1 Medium “bin” and include Under the “google” Copied to the mediapipe Next And modify it mediapipe/setup.py

protoc_command = [self._protoc, ‘-I.’, ‘–python_out=.’, source]

 It is amended as follows ：（ Pay attention to the English format of symbols ）
protoc_command = [self._protoc, ‘-I.’, ‘-I/usr/local/include’,’–python_out=.’, source]

8 - gcc Is the version 8, If not, please upgrade （ Failure to upgrade will result in an error , It's all tears , Please be sure to upgrade ）

sudo apt-get update
sudo apt-get install gcc-8
sudo apt-get install g++-8
cd /usr/bin
sudo rm gcc g++
sudo ln -s gcc-8 gcc
sudo ln -s g++-8 g++

If you report an error, come back and upgrade gcc, If you continue to execute the compiled file , You'll report a mistake again this rule is missing dependency declarations for the following fles Clean up the cache and continue ：

sudo rm -rf ~/.cache/bazel/

9 - compile
Use science as much as possible , Otherwise, the download package will be interrupted or something , Be patient and try again …
stay mediapipe perform ：

python3 setup.py gen_protos && python3 setup.py bdist_wheel

After a long time, I will be in a dist Folder generation .whl file

10 - install
Enter your virtual environment （ If there is ）

pip install *****.whl

At the end ：
The whole process is intermittent many times , Refer to several articles , Thank you
I try to surf the Internet scientifically on the computer and then turn on WiFi To the development board , It turns out that this won't work
I am using python36 If a friend wants mine whl You can send a private message or leave a message