打造自己的Android源码学习环境之五：编译Android源代码
打造自己的Android源码学习环境之五：编译Android源代码
下载android源代码之后，可以开始编译了。
0. 编译Android源码
0.1 设置环境
当前目录是执行repo init时所在的目录。
$ . build/envsetup.sh或者
$ source build/envsetup.sh$ source build/envsetup.sh
including device/asus/fugu/vendorsetup.sh
including device/generic/mini-emulator-arm64/vendorsetup.sh
including device/generic/mini-emulator-armv7-a-neon/vendorsetup.sh
including device/generic/mini-emulator-mips64/vendorsetup.sh
including device/generic/mini-emulator-mips/vendorsetup.sh
including device/generic/mini-emulator-x86_64/vendorsetup.sh
including device/generic/mini-emulator-x86/vendorsetup.sh
including device/google/dragon/vendorsetup.sh
including device/google/marlin/vendorsetup.sh
including device/htc/flounder/vendorsetup.sh
including device/huawei/angler/vendorsetup.sh
including device/lge/bullhead/vendorsetup.sh
including device/linaro/hikey/vendorsetup.sh
including device/moto/shamu/vendorsetup.sh
including sdk/bash_completion/adb.bash0.2 选择编译目标
执行lunch，选择默认的aosp_arm-eng。
也可以直接执行lunch aosp_arm-eng
$
You're building on Linux
Lunch menu... pick a combo:
1. aosp_arm-eng
2. aosp_arm64-eng
3. aosp_mips-eng
4. aosp_mips64-eng
5. aosp_x86-eng
6. aosp_x86_64-eng
7. full_fugu-userdebug
8. aosp_fugu-userdebug
9. mini_emulator_arm64-userdebug
10. m_e_arm-userdebug
11. m_e_mips64-eng
12. m_e_mips-userdebug
13. mini_emulator_x86_64-userdebug
14. mini_emulator_x86-userdebug
15. aosp_dragon-userdebug
16. aosp_dragon-eng
17. aosp_marlin-userdebug
18. aosp_sailfish-userdebug
19. aosp_flounder-userdebug
20. aosp_angler-userdebug
21. aosp_bullhead-userdebug
22. hikey-userdebug
23. aosp_shamu-userdebug
Which would you like? [aosp_arm-eng]
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=7.1.1
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.2.0-16-generic-x86_64-with-Ubuntu-15.10-wily
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=N6F26Q
OUT_DIR=out
============================================0.3 编译
执行make -j8。大概编译5~6个小时。
$ make -j8
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=7.1.1
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.2.0-16-generic-x86_64-with-Ubuntu-15.10-wily
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=N6F26Q
OUT_DIR=out
============================================
Running kati to generate build-aosp_arm.ninja...
略
including ./tools/external/fat32lib/Android.mk ...
including ./tools/test/connectivity/Android.mk ...
Starting build with ninja
ninja: Entering directory `.'
[ 0% 13/22958] Ensure Jack server is installed and started
Jack server already installed in "/home/galian/.jack-server"
Server is already running
[ 0% 17/22958] build out/target/common/obj/JAVA_LIBRARIES/sdk_v13_intermediates/classes.jack
[ 97% 22313/22958] host Java: android-icu4j-tests-host (out/host/common/obj/JAVA_LIBRARIES/android-icu4j-tests-host_intermediates/classes)
Note: 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.
[100% 22958/22958] host Executable: primitives_tests_32 (out/host/linux-x86/obj32/EXECUTABLES/primitives_tests_intermediates/primitives_tests32)
#### make completed successfully (04:37:17 (hh:mm:ss)) ####编译完成之后，Android源码目录占用空间，大概85GB：
其中代码20GB，.repo目录占用34GB，out目录占用31GB。
1. 可能出现的问题
1.1 You are attempting to build with the incorrect version of java.
如果安装了openjdk-8，但是编译的是Android 6.0.1的代码（或者之前的版本），会报如下错误：
Checking build tools versions...
************************************************************
You are attempting to build with the incorrect version of java.
Your version is: openjdk version "1.8.0_91" OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-3ubuntu1~15.10.1-b14) OpenJDK 64-Bit Server VM (build 25.91-b14, mixed mode).
The required version is: "1.7.x"
Please follow the machine setup instructions at
https://source.android.com/source/initializing.html
************************************************************
build/core/main.mk:171: *** stop。 停止。
#### make failed to build some targets (5 seconds) ####解决方法：
sudo apt-get install openjdk-7-jdk
sudo apt-get install openjdk-7-jre1.2 No space left on device
Created filesystem with 1682/98304 inodes and 139434/393216 blocks
Install system fs image: out/target/product/generic/system.img
acp: failed writing 'out/target/product/generic/system.img': No space left on device
build/core/Makefile:1042: recipe for target 'out/target/product/generic/system.img' failed
make: *** [out/target/product/generic/system.img] Error 1
make: *** Deleting file 'out/target/product/generic/system.img'没有剩余空间了，这是由于之前分配给虚拟系统的硬盘空间太少了。
一个缓解此问题的方法是，删除.repo目录。.repo目录大概占用34GB左右的空间。
1.3 Communication error with Jack server
问题log如下：
[ 35% 12670/35623] build out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack
FAILED: /bin/bash -c "(mkdir -p out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack.tmpjill.res ) && (unzip -qo prebuilts/sdk/15/android.jar -d out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack.tmpjill.res ) && (find out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack.tmpjill.res -iname \"*.class\" -delete ) && (JACK_VERSION=3.36.CANDIDATE out/host/linux-x86/bin/jack @build/core/jack-default.args --verbose error -D jack.import.resource.policy=keep-first -D jack.import.type.policy=keep-first -D jack.android.min-api-level=1 --import prebuilts/sdk/15/android.jar --import-resource out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack.tmpjill.res --output-jack out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack ) && (rm -rf out/target/common/obj/JAVA_LIBRARIES/sdk_v15_intermediates/classes.jack.tmpjill.res )"
Communication error with Jack server (56). Try 'jack-diagnose'
[ 35% 12670/35623] Building with Jack: out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/with-local/classes.dex
FAILED: /bin/bash out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/with-local/classes.dex.rsp
Communication error with Jack server (56). Try 'jack-diagnose'
ninja: build stopped: subcommand failed.
build/core/ninja.mk:148: recipe for target 'ninja_wrapper' failed
make: *** [ninja_wrapper] Error 1解决方法，可以试试执行如下命令：
$ jack-admin start-server
Launching Jack server java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/galian/.jack-server/launcher.jar com.android.jack.launcher.ServerLauncher1.4 Out of memory error (version 1.2-rc4 ‘Carnac’ …)
FAILED: /bin/bash out/target/common/obj/JAVA_LIBRARIES/core-all_intermediates/with-local/classes.dex.rsp
Out of memory error (version 1.2-rc4 'Carnac' (298900 f95d7bdecfceb327f9d201a1348397ed8a843843 by [email protected])).
Java heap space.
Try increasing heap size with java option '-Xmx解决方法：
上面已经给出提示：Try increasing heap size with java option '-Xmx。
【注意】：以下执行jack-admin的环境是刚才出现编译错误的Terminal。如果是在新的Terminal中执行jack-admin，需要先执行source build/envsetup.sh和lunch。
$ which jack-admin
/home/galian/android/out/host/linux-x86/bin/jack-admin当前已经有jack-server在运行：
$ jack-admin list-server
galian 31645 java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/galian/.jack-server/launcher.jar com.android.jack.launcher.ServerLauncher所以，具体的修改方法如下：
第一步，停止Server：jack-admin stop-server。
第二步，添加-Xmx2048m或者-Xmx2g，当然也可以设置更大的内存，例如-Xmx3g。
打开prebuilts/sdk/tools/jack-admin文件，有2种修改方式，选其一即可，我采用的是方式2，设置的是-Xmx3g：
方式1：
修改29行 JACK_SERVER_VM_ARGUMENTS="${JACK_SERVER_VM_ARGUMENTS:=-Dfile.encoding=UTF-8 -XX:+TieredCompilation}"，改为JACK_SERVER_VM_ARGUMENTS="-Xmx2g -Dfile.encoding=UTF-8 -XX:+TieredCompilation"。注意：这里不再使用${parameter:=default}的语法，直接给JACK_SERVER_VM_ARGUMENTS赋值。
方式2：
修改454行 JACK_SERVER_COMMAND="java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=$TMPDIR $JACK_SERVER_VM_ARGUMENTS -cp $LAUNCHER_JAR $LAUNCHER_NAME"，改为JACK_SERVER_COMMAND="java -Xmx2g -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=$TMPDIR $JACK_SERVER_VM_ARGUMENTS -cp $LAUNCHER_JAR $LAUNCHER_NAME"。
第三步， 重新编译。可以看到log，里面有-Xmx3g：
Launching Jack server java -Xmx3g -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/galian/.jack-server/launcher.jar com.android.jack.launcher.ServerLauncher2. 参考
（1） http://source.android.com/source/building.html
———————– 分 割 线 ———————–
本系列文章如下：
- （1）《打造自己的Android源码学习环境之一：序》
- （2）《打造自己的Android源码学习环境之二：在虚拟机中安装Ubuntu（上）》
- （3）《打造自己的Android源码学习环境之三：在虚拟机中安装Ubuntu（下）》
- （4）《打造自己的Android源码学习环境之四：下载Android源码》
- （5）《打造自己的Android源码学习环境之五：编译Android源码》
- （6）《打造自己的Android源码学习环境之六：运行Android模拟器》