前面已经下载好源码了，接下来是

下载手机对应的二进制驱动

执行编译源码命令

下载厂商驱动

https://developers.google.com/android/drivers?hl=zh-cn

搜索

NGI55D

Android 7.1.1 (NGI55D) 版 Nexus 6（移动版）二进制文件

环境准备

• 操作系统：推荐使用Linux系统，如Ubuntu。
• Java环境：安装OpenJDK或Oracle JDK，确保JAVA_HOME环境变量正确设置。
• Python环境：安装Python 2.7或3.x（具体版本需根据Android源码要求）。
• 依赖库：安装Git、GCC、G++、make等编译工具链，以及zip、unzip、curl等常用工具。

示例安装命令（以Ubuntu为例）

adb 工具

wget https://dl.google.com/android/repository/platform-tools_r30.0.5-linux.zip

unzip platform-tools_r30.0.5-linux.zip

export PATH=~/bin/:$PATH

export ADB_PATH=/home/l/soft/platform-tools

export PATH=$ADB_PATH:$PATH

libncurese文件

sudo ln -s /usr/lib/x86_64-linux-gnu/libncursesw.so.6.4 /usr/lib/libncurses.so.5

sudo ln -s /usr/lib/x86_64-linux-gnu/libncursesw.so.6.4 /usr/lib/libtinfo.so.5

java

sudo apt-get update

sudo apt-get install openjdk-8-jdk -y

sudo apt-get install vim -y

sudo update-alternatives --config java

sudo update-alternatives --config javac

python

sudo apt-get install gnupg flex bison build-essential zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 x11proto-core-dev libx11-dev libgl1-mesa-dev libxml2-utils xsltproc unzip

sudo apt-get install libxml2-utils -y

sudo apt-get install bison -y

wget https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tgz

sudo tar xzf Python-2.7.18.tgz

cd Python-2.7.18

sudo ./configure --enable-optimizations

sudo make altinstall

python2.7 -V

sudo ln -sfn '/usr/local/bin/python2.7' '/usr/bin/python2'

sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1

sudo apt install m4 python-is-python3

sudo apt -y install m4

sudo wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

sudo tar xzf Python-3.6.4.tgz

export CC=clang

export CXX=clang++

cd Python-3.6.4

sudo -s

./configure --enable-optimizations --with-lto

make altinstall

exit

which python3.6

/usr/local/bin/python3.6

https://www.hiascend.com/doc_center/source/zh/Pytorch/600/ptmoddevg/trainingmigrguide/performance_tuning_0063.html

sudo update-alternatives --install /usr/bin/python python /usr/local/bin/python3.6 2

python -V

Python 3.6.4

update-alternatives --list python

/usr/local/bin/python2.7

/usr/local/bin/python3.6

切换python

sudo update-alternatives --config python

There are 2 choices for the alternative python (providing /usr/bin/python).

Selection Path Priority Status

------------------------------------------------------------

0 /usr/bin/python3 2 auto mode

* 1 /usr/bin/python2 1 manual mode

2 /usr/bin/python3 2 manual mode

Press <enter> to keep the current choice[*], or type selection number: 0

update-alternatives: using /usr/bin/python3 to provide /usr/bin/python (python) in auto mode

jdk1.8 默认禁用tls

原因就是编译时用的是open-jdk 8u292，默认禁用了TLSv1, TLSv1.1，

从
/etc/java-8-openjdk/security/java.security中取消TLSv1, TLSv1.1 禁用

修改后执行 ./jack-admin kill-server && ./jack-admin start-server

vim /etc/java-8-openjdk/security/java.security

sudo vim /etc/java-8-openjdk/security/java.security

https://blog.csdn.net/ssliqpl0416/article/details/118221323

706 #jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, \

707 jdk.tls.disabledAlgorithms=SSLv3, RC4, DES, MD5withRSA, \

jack

cd ./prebuilts/sdk/tools/

./jack-admin install-server jack-launcher.jar jack-server-4.8.ALPHA.jar

安装这个服务

./jack-admin start-server 启动这个服务

./jack-admin kill-server 关闭这个服务

./jack-admin uninstall-server 卸载服务

启用缓存可以加快后续构建时间

mkdir /home/$USER/.ccache

export USE_CCACHE=1

export CCACHE_DIR=/home/$USER/.ccache

/home/l/aosp/prebuilts/misc/linux-x86/ccache/ccache -M 100G

export LC_ALL=C

export _JAVA_OPTIONS=-Xmx8192m

export _JAVA_OPTIONS=-Xmx4096m

开始编译

source ./build/envsetup.sh

user 编译出的系统有权限限制，适用于生产环境

userdebug 编译出的系统有 root 权限，调试首选

eng 优先考虑开发生产力，带有附加调试工具并关闭了优化

lunch 23

23. aosp_shamu-userdebug

执行驱动文件

ls *.tgz

broadcom-shamu-ngi55d-87193400.tgz qcom-shamu-ngi55d-c5c2a13a.tgz

moto-shamu-ngi55d-647151e8.tgz

每个tgz压缩文件解压出来1个sh脚本

bash xx.sh 输入I ACCEPT

生成vendor文件

ls vendor/

broadcom moto qcom

编译命令

- m: Makes from the top of the tree. #从android源码树的顶部开始编译

- mm: Builds all of the modules in the current directory. #编译当前目录下的所有模块

- mmm: Builds all of the modules in the supplied directories. #编译指定目录下的所有模块

修改源码解决必要的错误

1 dex2oatd Failed to mmap at expected address dex2oatd未能在预期地址执行mmap

报错指出，mmap系统调用返回的内存起始地址与传下去的建议地址值不一致。

解决方式：

mmap系统调用时，flag添加MAP_FIXED_NOREPLACE标志位；

vim art/runtime/mem_map.cc

MemMap* MemMap::MapFileAtAddress

DCHECK(ContainedWithinExistingMap(expected_ptr, byte_count, error_msg))

<< ((error_msg != nullptr) ? *error_msg : std::string());

flags |= MAP_FIXED

//Add begin @{

#if !defined(ART_TARGET)

} else if (expected_ptr) {

#define MAP_FIXED_NOREPLACE 0x100000

flags |= MAP_FIXED_NOREPLACE;

#endif

//@}

2 Init dlopen(libssd.so, RLTD_NOW) is failed

刷好的系统没有libssd.so,导致报错

1 获取 libssd.so 文件，我是从刷官方镜像，然后从系统里面拷贝出来的

2 修改驱动二进制文件，bash extract-qcom-shamu.sh 生成的文件

vendor/qcom/shamu/device-partial.mk

添加

vendor/qcom/shamu/proprietary/libssd.so:system/vendor/lib/libssd.so:qcom \

3 将 libssd.so 文件放到
vendor/qcom/shamu/proprietary/ 下面

4 mm 编译

5 查看 ls
out/target/product/shamu/system/vendor/lib/libssd.so

开始编译源码

启用环境变量

export USE_CCACHE=1

export CCACHE_DIR=/home/$USER/.ccache

export LC_ALL=C

export _JAVA_OPTIONS=-Xmx8192m

mm #编译当前目录下的所有模块

Warning: AndroidManifest.xml already defines targetSdkVersion (in http://schemas.android.com/apk/res/android); using existing value in manifest.
[100% 20188/20188] host Executable: pr...ests_intermediates/primitives_tests32)

#### make completed successfully (01:25:43 (hh:mm:ss)) ####
这个是编译的结果

ls out/target/product/shamu/

刷机

adb reboot bootloader

fastboot flashall -w