Android源码编译

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常用编译命令
在Android源代码目录下的build目录下，有个脚本文件envsetup.sh，执行这个脚本文件后，就可以获得一些有用的工具

Invoke ". build/envsetup.sh" from your shell to add the following functions to your environment:
- lunch:   lunch <product_name>-<build_variant>
- tapas:   tapas [<App1> <App2> ...] [arm|x86|mips|armv5|arm64|x86_64|mips64] [eng|userdebug|user]
- croot:   Changes directory to the top of the tree.
- m:       Makes from the top of the tree.
- mm:      Builds all of the modules in the current directory, but not their dependencies.
- mmm:     Builds all of the modules in the supplied directories, but not their dependencies.
           To limit the modules being built use the syntax: mmm dir/:target1,target2.
- mma:     Builds all of the modules in the current directory, and their dependencies.
- mmma:    Builds all of the modules in the supplied directories, and their dependencies.
- cgrep:   Greps on all local C/C++ files.
- ggrep:   Greps on all local Gradle files.
- jgrep:   Greps on all local Java files.
- resgrep: Greps on all local res/*.xml files.
- sgrep:   Greps on all local source files.
- godir:   Go to the directory containing a file.

交叉编译:
参考

0. mmm not found
   使用m、mm、mmm命令之前要在android源码目录下执行命令

.?build/envsetup.sh??

1. 解压android源码

tar xzf android-xxx.tar.gz

2. linux解压

tar xzf linux-3.0.xx.tgz
cd linux-3.0.xx
cp tiny4412_android_defconfig .config
make zImage

2. 编译

cd android-5.xx/
. setenv
lunch
chose full_tiny4412-eng
make

3. 源码
   官方源码

4. 参考
   官方说明
   7.0源码编译
   API FOR ANDROID
   给力参考1
   ubuntu添加jdk库
   给力参考2

下载源码

1. git 下载
2. openjdk安装sudo apt install openjdk-7-jdk
   对应版本如下

Android版本	编译要求的JDK版本
AOSP的Android主线	OpenJDK 8
Android 5.x至android 6.0	OpenJDK 7
Android 2.3.x至Android 4.4.x	Oracle JDK 6
Android 1.5至Android 2.2.x	Oracle JDK 5

java版本切换

sudo update-alternative --config java
sudo update-alternative --config javac

3. repo

repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest
或者使用:
repo init -u git://aosp.tuna.tsinghua.edu.cn/aosp/platform/manifest

如果提示无法连接到 gerrit.googlesource.com，那么我们只需要编辑 ~/bin/repo文件，找到REPO_URL这一行,然后将其内容修改为:
REPO_URL = ‘https://gerrit-google.tuna.tsinghua.edu.cn/git-repo’

初始化repo

repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest -b android-4.0.1_r1

4. 环境配置
   需要安装(16.04)

sudo apt-get install git-core gnupg flex bison gperf build-essential 
 zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 
 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache 
 libgl1-mesa-dev libxml2-utils xsltproc unzip

碰到的错误

1. unable to create file tests/P_str_escape/str\escape.rs (Invalid argument)
   Log 打印:

error: unable to create file tests/P_str_escape/str\\escape.rs (Invalid argument)
Checking out files: 100% (463/463), done.
Traceback (most recent call last):
  File "/mnt/e/ruin/sources/android/.repo/repo/main.py", line 531, in <module>
    _Main(sys.argv[1:])
  File "/mnt/e/ruin/sources/android/.repo/repo/main.py", line 507, in _Main
    result = repo._Run(argv) or 0
  File "/mnt/e/ruin/sources/android/.repo/repo/main.py", line 180, in _Run
    result = cmd.Execute(copts, cargs)
  File "/mnt/e/ruin/sources/android/.repo/repo/subcmds/sync.py", line 821, in Execute
    project.Sync_LocalHalf(syncbuf, force_sync=opt.force_sync)
  File "/mnt/e/ruin/sources/android/.repo/repo/project.py", line 1327, in Sync_LocalHalf
    self._InitWorkTree(force_sync=force_sync)
  File "/mnt/e/ruin/sources/android/.repo/repo/project.py", line 2486, in _InitWorkTree
    raise GitError("cannot initialize work tree")
error.GitError: cannot initialize work tree

解决方案 :
参考1
参考2
尝试手动创建tests/P_str_escape/str\escape.rs
实际要创建的文件并不是tests/P_str_escape/str\escape.rs
而是tests/P_str_escape/str/escape.rs
<your_path>\frameworks\compile\slang\tests\P_str_escape 这一级目录已经存在了，只需要创建str 目录，并在str 目录中创建 escape.rs 文件（文件内容为空）。
再次repo --trace sync
可以下载到完整的Android源代码了。
在win10bash上好像无解

2. libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
   Log打印

prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/bin/ld: error: out/host/linux-x86/obj32/SHARED_LIBRARIES/libnativehelper_intermediates/JniInvocation.o: unsupported reloc 43 against global symbol JniInvocation::jni_invocation_
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/bits/basic_string.h:270: error: unsupported reloc 43
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/bits/basic_string.h:270: error: unsupported reloc 43
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/bits/basic_string.h:235: error: unsupported reloc 43
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6//x86_64-linux/include/c++/4.6/bits/basic_string.h:235: error: unsupported reloc 43
libnativehelper/JNIHelp.cpp:310: error: unsupported reloc 43
libnativehelper/JNIHelp.cpp:311: error: unsupported reloc 43
libnativehelper/JNIHelp.cpp:332: error: unsupported reloc 43

解决: 参考stf 参考2

It works to me:
in file /art/build/Android.common_build.mk, find out:
Host.
ART_HOST_CLANG := false
ifneq ($(WITHOUT_HOST_CLANG),true)
  //By default, host builds use clang for better warnings.
  ART_HOST_CLANG := true
endif
change to :

Host.
ART_HOST_CLANG := false
ifeq ($(WITHOUT_HOST_CLANG),false)
  //By default, host builds use clang for better warnings.
  ART_HOST_CLANG := true
endif
If it still not works,try this in your android root path: 
cp /usr/bin/ld.gold prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/x86_64-linux/bin/ld

3 . 参考
错误描述:

/bin/bash: xmllint: command not found
sudo apt-get  install libxml2-utils

4 .

Install: out/target/product/tiny4412/data/nativebenchmark/binderAddInts
target Dex: Bluetooth
out/target/common/obj/PACKAGING/public_api.txt:20: error 5: Added public field android.Manifest.permission.BACKUP
out/target/common/obj/PACKAGING/public_api.txt:81: error 5: Added public field android.Manifest.permission.INVOKE_CARRIER_SETUP
out/target/common/obj/PACKAGING/public_api.txt:105: error 5: Added public field android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE
out/target/common/obj/PACKAGING/public_api.txt:115: error 5: Added public field android.Manifest.permission.RECEIVE_EMERGENCY_BROADCAST

******************************
You have tried to change the API from what has been previously approved.

To make these errors go away, you have two choices:
   1) You can add "@hide" javadoc comments to the methods, etc. listed in the
      errors above.

   2) You can update current.txt by executing the following command:
         make update-api

      To submit the revised current.txt to the main Android repository,
      you will need approval.
******************************



build/core/tasks/apicheck.mk:57: recipe for target 'out/target/common/obj/PACKAGING/checkapi-current-timestamp' failed
make: *** [out/target/common/obj/PACKAGING/checkapi-current-timestamp] Error 38
make: *** Waiting for unfinished jobs....
Error: out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/classes.jar: unknown package name of class file com/slsi/sec/android/HdmiService.class
Preparing output jar [/home/rain/workspace/android/source/android-5.0.2/out/target/common/obj/APPS/Telecom_intermediates/proguard.classes.jar]
  Copying resources from program jar [/home/rain/workspace/android/source/android-5.0.2/out/target/common/obj/APPS/Telecom_intermediates/classes.jar]

解决: make update-api
参考
参考2

最后终于编译成功

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