NanoPi K2 (Amlogic S905) Ubuntu 16.04 编译Android 5.1系统源码

NanoPi K2 (Amlogic S905) Ubuntu 16.04 编译Android 5.1系统源码


1. 下载源码

在这里下载https://www.mediafire.com/folder/8xn2iirciznqh/S905#dtzqzeqaf8114压缩包,或者使用repo进行下载。按照http://wiki.friendlyarm.com/wiki/index.php/NanoPi_K2/zh#.E7.BC.96.E8.AF.91Android这里下载。

2. 编译

编译的方法http://wiki.friendlyarm.com/wiki/index.php/NanoPi_K2/zh#.E7.BC.96.E8.AF.91Android,为防止链接失效,我这里备份一下:

// #################################引用分隔线###############################################

编译Android

搭建编译环境

搭建编译Android的环境建议使用64位的Ubuntu 16.04,安装需要的包即可。

sudo apt-get install bison g++-multilib git gperf libxml2-utils make python-networkx zip
sudo apt-get install flex libncurses5-dev zlib1g-dev gawk minicom

更多说明可查看 https://source.android.com/source/initializing.html 。

下载Android5.1源代码

Android源代码的下载需要使用repo,其安装和使用请查看 https://source.android.com/source/downloading.html 。

mkdir android && cd android
repo init -u https://github.com/friendlyarm/android_manifest.git -b nanopi-k2-lollipop
repo sync

其中“android”是指工作目录。

编译系统

source build/envsetup.sh
lunch nanopi_k2-userdebug
make -j8

编译成功完成后,目录 out/target/product/nanopi-k2 下包含可用于烧写的image文件。

filename    partition   Description
u-boot.bin  bootloader  -
boot.img    boot    -
cache.img   cache   -
userdata.img    userdata    -
system.img  system  -
partmap.txt -   分区描述文件

烧写到SD卡

如果是采用SD卡启动Android,可复制编译生成的image文件到sd-fuse_amlogic/android/ 下,使用脚本即可烧到到SD卡,具体请查看#在Linux Desktop下通过脚本制作。

使用fastboot更新

板子启动后通过串口快速按任意键进入uboot命令行模式,输入命令fastboot usb即可更新Android。
连接USB线,然后PC端输入以下命令:

cd out/target/product/nanopi-k2
sudo fastboot flash boot boot.img
sudo fastboot flash cache cache.img
sudo fastboot flash userdata userdata.img
sudo fastboot flash system system.img
sudo fastboot reboot

// #################################引用分隔线###############################################

3. 遇到的问题

1.JDK版本问题

源码里自带了自己需要使用的1.7版本,你的系统中装的不一定是1.7版本的。直接加上一个全局变量,让编译的时候使用自带的解决JDK版本的问题。

解决方案

export ANDROID_SET_JAVA_HOME=true

2. JniInvocation.cpp:165: error: unsupported reloc 43

...
libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
...

解决方案

具体的原因是使用clang编译art时遇到点问题,使用clang而不使用gcc是想log内容好看一些,这里不使用即可。来源:https://github.com/gmacario/easy-jenkins/issues/88

export WITHOUT_HOST_CLANG=false

注:其它博客上写的修改源码的方式也是禁用clang,这里能用export解决就不修改源码。:)

3. public_api.txt:20: error 5: Added public field android.Manifest.permission.BACKUP

新源码,根本没有修改任何代码,怎么上来就需要make update-api呢?应该是别的错误引起的,最终找到了解决方案。

Checking API: checkpublicapi-current
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:82: error 5: Added public field android.Manifest.permission.INVOKE_CARRIER_SETUP
out/target/common/obj/PACKAGING/public_api.txt:106: error 5: Added public field android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE
out/target/common/obj/PACKAGING/public_api.txt:116: 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.
******************************

解决方案:

根据:https://stackoverflow.com/a/42654807/2193455 和 https://android.googlesource.com/platform/system/core/+/dd060f01f68ee0e633e9cae24c4e565cda2032bd%5E%21 需要修改 system/core/libutils/String8.cpp

diff --git a/libutils/String8.cpp b/libutils/String8.cpp
index 9092cbc..3323b82 100644
--- a/libutils/String8.cpp
+++ b/libutils/String8.cpp
@@ -424,7 +424,7 @@
             next = len;
         }

-        memcpy(buf + tail, buf + index + skip, next - index - skip);
+        memmove(buf + tail, buf + index + skip, next - index - skip);
         tail += next - index - skip;
         index = next;
     }

4. 我的完整编译脚本,需要的请拿去

#!/bin/bash
# author: kangear
# e-mail: [email protected]
# wechat: kangear
# only for android 5.1 (NanoPi-K2 Amologic S905)

# export http_proxy=127.0.0.1:
# install from wiki
sudo apt-get -y install bison g++-multilib git gperf libxml2-utils make python-networkx zip flex libncurses5-dev zlib1g-dev gawk minicom 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

# For Jdk 1.7
# sudo add-apt-repository -y ppa:openjdk-r/ppa  
# sudo apt-get -y update   
# sudo apt-get -y install openjdk-7-jdk
export ANDROID_SET_JAVA_HOME=true

# cache
export USE_CCACHE=1

# fix: libnativehelper/JniInvocation.cpp:165: error: unsupported reloc 43
export WITHOUT_HOST_CLANG=false

# fix: public_api.txt:20: error 5: Added public field android.Manifest.permission.BACKUP
sed -i '427s/memcpy/memmove/' ./system/core/libutils/String8.cpp

# ccache size
prebuilts/misc/linux-x86/ccache/ccache -M 200G

# for nanopi_k2
source build/envsetup.sh
lunch nanopi_k2-userdebug

# make
make -j32

5. 截图

NanoPi K2 (Amlogic S905) Ubuntu 16.04 编译Android 5.1系统源码_第1张图片

你可能感兴趣的:(6.,Amlogic)