Repo下载AOSP源码：基于ubuntu22.04 环境配置

使用高版本Ubuntu编译环境配置后，发现repo不可使用，Python出了很多问题，左右尝试都没有结果，最后通过常用的经Python版本，发现3.9可以用。

1. 对 Python 2 的支持已于 2020 年 1 月 1 日停止，Google 强烈建议您改用所有脚本 Python 3。
2. 目前使用google repo下载AOSP源码，需要使用Python3.9.其他版本的测试是不可用的
3. Ubuntu20.04 默认支持Python3.9，而Ubuntu22.04则默认是Python3.10
4. 基于本文的介绍Ubuntu22.04下载Android源代码适用于其他方法Ubuntu版本。

• 添加ppa这个源可以安装多个源python版本

sudo add-apt-repository ppa:deadsnakes/ppa sudo apt install python3.9 sudo apt install python3.7 #不需要省略，这里只告诉这个PPA源支持多个版本 

• 使用以下命令，发现系统中有多个命令Python版本
• sudo update-alternatives --list python

 sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1  sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.10 2 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.7  3 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.93 szhou@bc03:~/works/aosp/aosp$  

• 以下列表中的第四个选项

szhou@bc03:~/works/aosp/aosp$ sudo update-alternatives --config python There are 4 choices for the alternative python (providing /usr/bin/python).    Selection    Path                 Priority   Status ------------------------------------------------------------ * 0            /usr/bin/python3.9    4         auto mode   1            /usr/bin/python2.7    1         manual mode   2            /usr/bin/python3.10   2         manual mode   3            /usr/bin/python3.7    3         manual mode   4            /usr/bin/python3.9    4         manual mode  Press <enter> to keep the current choice[*], or type selection number: 4 

• 设置后，确认下一个版本Python 3.9版本

zhou@bc03:~/works/aosp/aosp$ python -V
Python 3.9.12
szhou@bc03:~/works/aosp/aosp$ 

mkdir ~/bin
PATH=~/bin:$PATH
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo

• 直接下载tar包速度更快，所以直接列出此方法

wget -c https://mirrors.tuna.tsinghua.edu.cn/aosp-monthly/aosp-latest.tar # 下载初始化包
tar xf aosp-latest.tar

• 联网同步经常会失败，失败后再次repo sync直到提示完全成功

cd AOSP   # 解压得到的 AOSP 工程目录
# 这时 ls 的话什么也看不到，因为只有一个隐藏的 .repo 目录
repo sync

• 示例

szhou@bc03:~/works/aosp/aosp$ repo sync -j4
Fetching: 100% (1125/1125), done in 4m0.280s
Garbage collecting: 100% (1125/1125), done in 5.500s
Checking out: 100% (1125/1125), done in 2.929s
repo sync has finished successfully.
szhou@bc03:~/works/aosp/aosp$ 

• 使用 git branch -a 可查看所有可用分支

szhou@bc03:~/works/aosp/aosp$cd .repo/manifests
szhou@bc03:~/works/aosp/aosp/.repo/manifests$ git branch -a 

• 使用 git branch -a | grep “android-12” 只看S版本的分支

szhou@bc03:~/works/aosp/aosp/.repo/manifests$ git branch -a | grep "android-12"
  remotes/origin/android-12.0.0_r1
  remotes/origin/android-12.0.0_r10
  ……省略……
  remotes/origin/android-12.0.0_r19
  remotes/origin/android-12.0.0_r2
  remotes/origin/android-12.0.0_r20
  remotes/origin/android-12.0.0_r21
  remotes/origin/android-12.0.0_r25
  remotes/origin/android-12.0.0_r26
  remotes/origin/android-12.0.0_r27
  remotes/origin/android-12.0.0_r28
  remotes/origin/android-12.0.0_r29
  remotes/origin/android-12.0.0_r3
  remotes/origin/android-12.0.0_r30
  remotes/origin/android-12.0.0_r31
  remotes/origin/android-12.0.0_r32

• 如下在 -b 后面追加分支名称，执行 repo init命令
• repo sync 同步分支代码

szhou@bc03:~/works/aosp/aosp$ repo init -u https://mirrors.tuna.tsinghua.edu.cn/git/AOSP/platform/manifest -b android-12.0.0_r32
.repo/manifests/: discarding 491 commits

Your identity is: szhou<szhou@amizhou.com>
If you want to change this, please re-run 'repo init' with --config-name

repo has been initialized in /home/szhou/works/aosp/aosp
szhou@bc03:~/works/aosp/aosp$ repo sync -j4

正在终止
error: external/boringssl/: platform/external/boringssl checkout 8dbb9309b540a16b72b6cb23cc942e90a583cc32 
error: Cannot checkout platform/external/boringssl
Checking out: 13% (145/1051) platform/external/flatbufferserror: 工作区中下列未跟踪的文件将会因为检出操作而被覆盖：
     …… 省略 ……
        doc/vizualization/layout/pdf/sa-D1.pdf
        doc/vizualization/layout/pdf/sa-D2.pdf
        doc/vizualization/layout/pdf/sa-D2v.pd
正在终止
error: external/libabigail/: platform/external/libabigail checkout c1c139bd6553bfd924c65a30e922e154e9a160e6 
error: Cannot checkout platform/external/libabigail
Checking out: 60% (640/1051) platform/external/wycheprooferror.GitError: Cannot checkout platform/libcore: platform/libcore rev-list ('^d8d7f29bb1dd51d3ed2f6e2766fcf449f9b60ee7', 'HEAD', '--'): fatal: bad object d8d7f29bb1dd51d3ed2f6e2766fcf449f9b60ee7

error: Cannot checkout platform/libcore
Checking out: 100% (1051/1051), done in 1m12.279s

error: Unable to fully sync the tree.
error: Checking out local projects failed.
Failing repos:
external/boringssl
cts
external/libabigail
libcore
Try re-running with "-j1 --fail-fast" to exit at the first error.
szhou@bc04:~/aosp/aosp$ 

szhou@bc04:~/aosp/aosp$ rm -rf .repo/projects/external/boringssl.git/
szhou@bc04:~/aosp/aosp$ rm -rf .repo/projects/external/libabigail.git/
szhou@bc04:~/aosp/aosp$ rm -rf .repo/projects/libcore.git/

szhou@bc04:~/aosp/aosp$ rm -rf external/boringssl
szhou@bc04:~/aosp/aosp$ rm -rf external/libabigail
szhou@bc04:~/aosp/aosp$ rm -rf libcore
szhou@bc04:~/aosp/aosp$ 

• 若已有部分代码下载下来，则把其project代码目录删除，若还没有，这不用。

szhou@bc04:~/aosp/aosp$ rm -rf external/boringssl
szhou@bc04:~/aosp/aosp$ rm -rf external/libabigail
szhou@bc04:~/aosp/aosp$ rm -rf libcore
szhou@bc04:~/aosp/aosp$ 

• 如果再出现同样问题，重复1,2,3步骤，直到成功

        .prebuilt_info/prebuilt_info_hostsidetests_stagedinstall_testdata_apex__x86_com_android_apex_cts_shi
正在终止
error: cts/: platform/cts checkout 5e3383612940c9d71af5d131be1433e104367cee 
error: Cannot checkout platform/cts
正在更新文件: 100% (2294/2294), 完成./external/rust/crates/atty正在更新文件:  98% (2249/2294)
Checking out: 100% (1051/1051), done in 13.087s

error: Unable to fully sync the tree.
error: Checking out local projects failed.
Failing repos:
cts
Try re-running with "-j1 --fail-fast" to exit at the first error.
szhou@bc04:~/aosp/aosp$ rm -rf cts/     
szhou@bc04:~/aosp/aosp$ rm -rf .repo/projects/cts.git/

• repo sync has finished successfully.

szhou@bc04:~/aosp/aosp$ repo sync
Fetching: 100% (1051/1051), done in 4m40.573s
Garbage collecting: 100% (1051/1051), done in 3.153s
正在更新文件: 100% (22773/22773), 完成.test/vts-testcase/performance正在更新文件:  30% (6979/22773)
Checking out: 100% (1051/1051), done in 45.428s
repo sync has finished successfully.
szhou@bc04:~/aosp/aosp$ 

builder@mm-aosp:~/code$ source build/envsetup.sh 
builder@mm-aosp:~/code$ lunch 
Which would you like? [aosp_arm-eng] 42
15:22:15 Build sandboxing disabled due to nsjail error.
15:22:17 Build sandboxing disabled due to nsjail error.

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=12
TARGET_PRODUCT=aosp_x86_64
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_ARCH=x86_64
TARGET_ARCH_VARIANT=x86_64
TARGET_2ND_ARCH=x86
TARGET_2ND_ARCH_VARIANT=x86_64
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-5.11.0-49-generic-x86_64-Ubuntu-14.04.5-LTS
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=SQ1D.220205.004
OUT_DIR=out
PRODUCT_SOONG_NAMESPACES=device/generic/goldfish device/generic/goldfish-opengl hardware/google/camera hardware/google/camera/devices/EmulatedCamera
============================================

builder@mm-aosp:~/code$ make -j32
builder@mm-aosp:~/code$

[ 99% 137251/137272] //frameworks/base/packages/SystemUI:SystemUI r8 [common]
Warning: Missing class android.compat.annotation.UnsupportedAppUsage (referenced from: void com.android.systemui.people.widget.PeopleBackupHelper.writeNewStateDescription(android.os.ParcelFileDescriptor))
Missing class android.support.annotation.Keep (referenced from: kotlinx.coroutines.android.AndroidExceptionPreHandler)
Missing class org.jetbrains.annotations.NotNull (referenced from: java.util.List com.android.keyguard.FontInterpolator$VarFontKey.sortedAxes and 4281 other contexts)
Missing class org.jetbrains.annotations.Nullable (referenced from: android.graphics.fonts.Font com.android.keyguard.FontInterpolator$InterpKey.l and 1038 other contexts)
Info: Stripped invalid locals information from 1 method.
Info in ./out/soong/.intermediates/frameworks/base/packages/SystemUI/SystemUI/android_common/combined/SystemUI.jar:kotlinx/coroutines/scheduling/WorkQueue.class:
  Methods with invalid locals information:
  void kotlinx.coroutines.scheduling.WorkQueue.offloadAllWork$kotlinx_coroutines_core(kotlinx.coroutines.scheduling.GlobalQueue)
  Type information in locals-table is inconsistent. Cannot constrain type: BOTTOM (empty) for value: v15 by constraint INT.
Info: Some warnings are typically a sign of using an outdated Java toolchain. To fix, recompile the source with an updated toolchain.
[100% 137272/137272] Target vbmeta image: out/target/product/generic_x86_64/vbmeta.img

#### build completed successfully (01:09:58 (hh:mm:ss)) ####

builder@mm-aosp:~/code$

一个简单的下代码，编译，每次总会遇到新问题，这次算是盘完了