android 源码编译相关

2024-12-06 技术教程

1 在ubuntu中编译android6.0时需要openjdk7, 但是openjdk-7-jdk 和openjdk-7-jre需要同时安装。

$sudo apt-get install openjdk-7-jre

$sudo apt-get install openjdk-7-jdk

PS: openjdk-7-jre包只包含Java运行时环境（Java Runtime Environment）。如果是要开发Java应用程

序，则需要安装openjdk-7-jdk包。

2 在ubuntu中更新jdk链接

Installing Oracle JDK 8 on Ubuntu:

Extract the tar file:

tar-xvzfjdk-8-linux-x64.tar.gz

Create jvm folder in /usr/lib, if jvm folder not exist

sudomkdir/usr/lib/jvm

Move extracted jdk 8 folder to this location:

sudomvjdk1.8.0/usr/lib/jvm/jdk1.8.0

Install new java source in system:

sudoupdate-alternatives--install/usr/bin/javacjavac/usr/lib/jvm/jdk1.8.0/bin/javac1sudoupdate-alternatives--install/usr/bin/javajava/usr/lib/jvm/jdk1.8.0/bin/java1sudoupdate-alternatives--install/usr/bin/javawsjavaws/usr/lib/jvm/jdk1.8.0/bin/javaws1

Choose default java:

sudoupdate-alternatives--configjavacsudoupdate-alternatives--configjavasudoupdate-alternatives--configjavaws

Java version test:

java-version

参考链接 http://www.devsniper.com/install-jdk-8-on-ubuntu/

3 android N 编译

1）编译错误

JavaheapspaceTryincreasingheapsizewithjavaoption'-Xmx<size>'Warning:Thismayhaveproducedpartialorcorruptedoutput.ninja:buildstopped:subcommandfailed.build/core/ninja.mk:146:recipefortarget'ninja_wrapper'failedmake:***[ninja_wrapper]Error1

解决方案：在文件 out/host/linux-x86/bin/jack-admin 添加值

exportJACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8-XX:+TieredCompilation"然后重启out/host/linux-x86/bin/jack-adminkill-serverout/host/linux-x86/bin/jack-adminstart-server5编译andoridorea,内存不够：解决方案：Theproblemisthatvirtualmachinewhichrunsjackdoesn'thaveenoughmemory.Youcantrytoeditjvmcommand:JACK_VM_COMMAND=${JACK_VM_COMMAND:="java-Xmx4096m"}ortodecreasenumberofparalleljackcompilationsSERVER_NB_COMPILE=2infile.Youcanreadjackdocumentationfordetails.EDIT:Changing.jackfiledidn'tworkforme.AfterdiggingalittledeeperIfoundthatjackserverisstartedwithout/host/linux-x86/bin/jack-adminscriptandit'sparameterscanbepassedwithJACK_SERVER_VM_ARGUMENTSenvironmentvariable.Somysolutionwastosetitandrestartjackserverbeforebuildingaosp:

6在android８orea, cts中添加第三方jar包：LOCAL_STATIC_JAVA_LIBRARIES :=poi（在compatibility-host-util andorid.mk 文件中）

make cts时，出现错误：

ninja: error: '/media/camille/android_src/out/androidOrea/host/common/obj/JAVA_LIBRARIES/poi_intermediates/classes.jar', needed by '/media/camille/android_src/out/androidOrea/host/common/obj/JAVA_LIBRARIES/compatibility-host-util_intermediates/classes-full-debug.jar', missing and no known rule to make it

15:00:20 ninja failed with: exit status 1

build/core/main.mk:21: recipe for target 'run_soong_ui' failed

make: *** [run_soong_ui] Error 1

说明编译package compatibility-host-util　需要poi_intermediates下的文件classes.jar。

解决方法：　复制一份poi_intermediates下的文件javalib.jar, rename to classes.jar。再次编译，就可以了。