Android 7.1编译的遇到的一些问题

Android7.1（也就是Android N）上默认使用JACK编译器而不再使用openjdk了，但发现JACK不是很好用，比如最大的一个问题就是，同一台linux服务器上不允许不同用户同时进行andorid7.0的编译，原因就是后面开始编译的用户无法正常启动jack server，而jack server居然不能关闭，虽然JACK文档中有说提供一些宏，只要设置宏为对应的值就可以关闭，但实测发现无效，不过总算有方法可以搞定，下面是我对多用户无法同时编译的问题的解决过程（最下面有解决方案，）：

*可在编译源码过程 make -j8 ANDROID_COMPILE_WITH_JACK=false 命令尝试此关闭jack:

1)尝试关闭JACK，但发现失败：
当在板型目录中的BoardConfig.mk中添加ANDROID_COMPILE_WITH_JACK:=false时，编译会出错：

ninja: error: 'out/target/common/obj/APPS/ActSensorCalib_intermediates/with-local/classes.dex',needed by 'out/target/common/obj/APPS/ActSensorCalib_intermediates/classes.dex', missing and no known rule to make itmake[1]: *** [ninja_wrapper] Error 1

2），当在板型目录中的BoardConfig.mk中添加DEFAULT_JACK_ENABLED := disabled时，仍然不能关闭JACK，都会报错：

[ 34% 13188/37803] Ensure Jack server is installed and startedFAILED: /bin/bash -c "(prebuilts/sdk/tools/jack-admin install-server prebuilts/sdk/tools/jack-launcher.jar prebuilts/sdk/tools/jack-server-4.8.ALPHA.jar  2>&1 || (exit 0) ) &&(JACK_SERVER_VM_ARGUMENTS=\"-Dfile.encoding=UTF-8 -XX:+TieredCompilation\" prebuilts/sdk/tools/jack-admin start-server 2>&1 || exit 0 ) &&(prebuilts/sdk/tools/jack-admin update server prebuilts/sdk/tools/jack-server-4.8.ALPHA.jar 4.8.ALPHA 2>&1 || exit 0 ) &&(prebuilts/sdk/tools/jack-admin update jackprebuilts/sdk/tools/jacks/jack-2.28.RELEASE.jar 2.28.RELEASE || exit 47;prebuilts/sdk/tools/jack-admin update jack prebuilts/sdk/tools/jacks/jack-3.36.CANDIDATE.jar 3.36.CANDIDATE || exit 47;prebuilts/sdk/tools/jack-admin update jack prebuilts/sdk/tools/jacks/jack-4.7.BETA.jar 4.7.BETA || exit 47 )"Writing client settings in /home/test/.jack-settingsInstalling jack server in "/home/test/.jack-server"Communication error with Jack server (58), try 'jack-diagnose' or see Jack server logFailed to contact Jack server: Problem reading /home/test/.jack-server/client.pem. Try 'jack-diagnose'Failed to contact Jack server: Problem reading /home/test/.jack-server/client.pem. Try 'jack-diagnose'[ 34% 13188/37803] Compiling SDK Stubs...tubs_current_intermediates/classes.jarNote: Some input files use or override a deprecated API.Note: Recompile with -Xlint:deprecation for details.Note: Some input files use unchecked or unsafe operations.Note: Recompile with -Xlint:unchecked for details.[ 34% 13188/37803] target SharedLib: l...bLLVM_intermediates/LINKED/libLLVM.so)ninja: build stopped: subcommand failed.make[1]: *** [ninja_wrapper] Error 1make[1]: Leaving directory `/home/test/700E/android/android'

2.尝试解决，网上有很多人反映这个问题，但是目前没有有效的解决方案，最可能的办法是从2个方面尝试：
1）这个issue有人说是需要增加RAM：I was on VitualMachine when I had the error. And the fix was to increase the RAM，不过他是在虚拟机上，我们的应该跟RAM无关；
2），通过修改配置文件$HOME/.jack-settings，设置不同的端口号：

Server settings

computer@name:~$ gedit .jack-settings# Server settingsSERVER_HOST=127.0.0.1SERVER_PORT_SERVICE=8076SERVER_PORT_ADMIN=8077# Internal, do not touchSETTING_VERSION=4

通过实验发现，单独修改配置文件$.jack-settings中的端口号没有效果，jack server一直启动失败，提示端口被占用：

com.android.jack.server.api.v01.ServerException: Problem while opening service port        at com.android.jack.server.JackHttpServer.start(JackHttpServer.java:611)        at com.android.jack.server.JackServerImpl.run(JackServerImpl.java:62)        at com.android.jack.launcher.ServerLauncher$3.run(ServerLauncher.java:391)        at java.lang.Thread.run(Thread.java:745)Caused by: java.net.BindException: Address already in use        at sun.nio.ch.Net.bind0(Native Method)        at sun.nio.ch.Net.bind(Net.java:433)        at sun.nio.ch.Net.bind(Net.java:425)        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)        at com.android.jack.server.ServerParameters.openSocket(ServerParameters.java:88)        at com.android.jack.server.ServerParameters.getServiceSocket(ServerParameters.java:67)        at com.android.jack.server.JackHttpServer.start(JackHttpServer.java:605)

3），需要同时修改 $.jack-server/config.properties 中的端口号，方才有效，可以在别的用户启动了jack server的情况再启动另一个jack server，这样就可以实现多用户同时编译：

//修改jack.server.service.port=8076 和jack.server.admin.port=8077这2行，比如改为8096，8097等computer@name:~/.jack-server$ gedit config.properties##Thu May 18 14:48:27 CST 2017jack.server.max-jars-size=104857600jack.server.max-service=4jack.server.service.port=8076jack.server.max-service.by-mem=1\=2147483648\:2\=3221225472\:3\=4294967296jack.server.admin.port=8077jack.server.config.version=2jack.server.time-out=7200

总结一下解决方案就是：

同时修改 .jack−settings和 .jack-server/config.properties中的端口号（比如都改为8096/8097），方可支持多用户同时编译。

目前可以先用这个方法解决问题。
补充一下后来编译遇到的错误的解决方法：
错误提示：

[ 8% 1/12] Ensure Jack server is installed and started

再试了一次还是报错：

FAILED:/bin/bash -c "(prebuilts/sdk/tools/jack-admin install-serverprebuilts/sdk/tools/jack-launcher.jar prebuilts/sdk/tools/jack-server-4.8.ALPHA.jar2>&1 || (exit 0) ) &&(JACK_SERVER_VM_ARGUMENTS=\"-Dfile.encoding=UTF-8-XX:+TieredCompilation\" prebuilts/sdk/tools/jack-admin start-server2>&1 || exit 0 ) && (prebuilts/sdk/tools/jack-admin updateserver prebuilts/sdk/tools/jack-server-4.8.ALPHA.jar 4.8.ALPHA 2>&1 ||exit 0 ) && (prebuilts/sdk/tools/jack-admin update jackprebuilts/sdk/tools/jacks/jack-2.28.RELEASE.jar 2.28.RELEASE || exit 47;prebuilts/sdk/tools/jack-admin update jackprebuilts/sdk/tools/jacks/jack-3.36.CANDIDATE.jar 3.36.CANDIDATE || exit 47;prebuilts/sdk/tools/jack-admin update jackprebuilts/sdk/tools/jacks/jack-4.7.BETA.jar 4.7.BETA || exit 47 )"Jack server already installed in"/home/local/ACTIONS/songzhining/.jack-server"Launching Jack server java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp-Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp/home/local/ACTIONS/songzhining/.jack-server/launcher.jarcom.android.jack.launcher.ServerLauncherJack server failed to (re)start, try 'jack-diagnose' or see Jack server logNo Jack server running. Try 'jack-admin start-server'No Jack server running. Try 'jack-admin start-server'ninja: build stopped: subcommand failed.make[1]: *** [ninja_wrapper] Error 1

解决方案：
通过查看文件 $HOME/.jack-server/logs/jack-server-0-0.log：

10:26:40.898:SEVERE: com.android.jack.launcher.ServerLauncher: Server 1 Exceptioncom.android.jack.server.api.v01.ServerException: './config.properties' musthave permission rw------- but have rwx------  atcom.android.jack.server.JackServerImpl.run(JackServerImpl.java:65)  atcom.android.jack.launcher.ServerLauncher$3.run(ServerLauncher.java:391)  atjava.lang.Thread.run(Thread.java:745)Caused by: java.io.IOException: './config.properties' must have permissionrw------- but have rwx------  at com.android.jack.server.JackHttpServer.checkAccess(JackHttpServer.java:696)  atcom.android.jack.server.JackHttpServer.loadConfig(JackHttpServer.java:513)  atcom.android.jack.server.JackHttpServer.(JackHttpServer.java:379)  at com.android.jack.server.JackServerImpl.run(JackServerImpl.java:61)  ... 2 more

发现是配置文件的权限不对造成的，把文件.jack-server/config.properties的权限由rwx改为rw即可解决问题。

computer@name:~/.jack-server$ ls -l config.properties-rwx------- 1 computer computer 282 5月  18  2017 config.propertiescomputer@name:~/.jack-server$ sudo chmod go-rw config.propertiescomputer@name:~/.jack-server$ ls -l config.properties-rw------- 1 computer computer 1073741824 1月  25 10:19 config.properties

Android(安卓)7.1编译问题 FAILED: /bin/bash -c

Android 7.1编译的遇到的一些问题

Server settings

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