体验编译构建 OpenHarmony

一、说明

OpenHarmony是由开放原子开源基金会（OpenAtom Foundation）的开源项目，目标是面向全场景、全连接、全智能时代，基于开源的方式，搭建一个智能终端设备操作系统的框架和平台，促进万物互联产业的繁荣发展。

二、基于ubuntu环境构建

注：ubuntu版本20.04

（一）安装更新组件

sudo apt-get install build-essential gcc g++ make zlib* libffi-dev
sudo apt-get install dosfstools mtools mtd-utils default-jre default-jdk
sudo apt-get install git git-lfs ruby libncurses5 python3-pip curl
sudo apt-get install flex bison ccache libtool
sudo apt autoremove

（二）python和pip3

sudo rm -rf /bin/sh
sudo ln -s /bin/bash /bin/sh
sudo ln -sf /usr/bin/python3.8 /usr/bin/python
pip3 install --upgrade pip
pip3 install setuptools
pip3 install kconfiglib
pip3 install pycryptodome
pip3 install six
pip3 install ecdsa
pip3 install scons
python3 -m pip install --user ohos-build

（三）配置gitee

git config --global user.email "you@mail.com"
git config --global user.name "your name"
git config --global credential.helper store

（四）下载repo

curl https://gitee.com/oschina/repo/raw/fork_flow/repo-py3 > ~/repo
sudo chmod a+x ~/repo
sudo mv ~/repo /usr/bin/repo
pip3 install -i https://repo.huaweicloud.com/repository/pypi/simple requests

（五）最新版mater仓库

cd ~
mkdir ohos
cd ohos
repo init -u https://gitee.com/openharmony/manifest.git -b master --no-repo-verify
repo sync -c
repo forall -c git lfs pull

（六）下载配置编译器

./build/prebuilts_download.sh

（七）编译构建

./build.sh --product-name Hi3516DV300 --ccache

三、基于openEuler环境 基本与ubuntu安装方法一样，不过这里安装组件用dnf install，部分组件未集成，需手工安装。 （一）组件安装

sudo dnf -y install gcc bc gcc-c++ ncurses ncurses-devel cmake elfutils-libelf-devel openssl-devel bison flex
sudo dnf -y install binutils.x86_64 gnupg2.x86_64 flex.x86_64 bison.x86_64 zip.x86_64 curl.x86_64 ccache.x86_64 unzip.x86_64 m4.x86_64 gperf.x86_64
sudo dnf -y install dosfstools.x86_64 mtools.x86_64 mtdev.x86_64 mtdev-devel.x86_64 
sudo dnf -y install java ruby
sudo dnf -y install lzo.x86_64 lzo-devel.x86_64
sudo dnf -y install zstd-devel.x86_64 zstd.x86_64
sudo dnf -y install uboot-tools.x86_64
sudo dnf -y install libvirt.x86_64 libvirt-daemon.x86_64
sudo dnf -y install bridge-utils.x86_64
sudo dnf -y install libatomic-static.x86_64 libatomic.x86_64 boost-atomic.x86_64
sudo dnf -y install libstdc++-static.x86_64 libstdc++.x86_64

（二）内核增加驱动模块 １、源码编译安装mtd-utils

wget ftp://ftp.infradead.org/pub/mtd-utils/mtd-utils-2.1.2.tar.bz2
tar -xvf mtd-utils-2.1.2.tar.bz2
cd mtd-utils-2.1.2
./configure --prefix=/usr
make -j4
sudo make install

２、开启jffs2文件系统支持：

File systems  -> Miscellaneous filesystems  ->
      [*]  Flash File System JFFS2    
３、kernel开启mtdram                                                  
Device Drivers  ->
    [*]Memory Technology Device (MTD) support  ->
        [M]   Caching block device access to MTD devices
              Self-contained MTD device drivers  ->
                 <M> Test driver using RAM

４、安装驱动

sudo make modules
sudo make modules_install

５、安装python2.7（若需要可参考）

wget https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tgz
tar -xvf Python-2.7.18
cd Pythob-2.7.18
./configure --prefix=/usr
make -j4
sudo make install
将python链接修改为python2.7,以后需要3.8可以自行修改
sudo ln -sf /usr/bin/python2.7 /usr/bin/python

6、安装git-lfs(系统暂未集成，可直接借用centos）.

sudo dnf install https://download-ib01.fedoraproject.org/pub/epel/7/x86_64/Packages/g/git-lfs-2.10.0-1.el7.x86_64.rpm

(三)其它配置与ubuntu一致（略） 三、qemu虚拟机测试

hb set
qemu_small_system_demo
hb build
./qemu-run