Android 8 正式版的下載和編譯

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本文介绍如何从源码编译Android 8.0系统。首先下载官方代码，使用特定命令进行同步，随后通过一系列配置选择目标平台及构建类型。最终开始编译流程。

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首先先下載　Android 8　的官方代碼．

執行以下兩行命令進行下載

repo init -u https://android.googlesource.com/platform/manifest -b android-8.0.0_r1
repo sync -j4

在大約兩個小時之後下載完畢．

jhczz@vaio:~/work/googlesource/Android/android-8.0.0_r1$ source build/envsetup.sh 
including device/asus/fugu/vendorsetup.sh
including device/generic/car/car-arm64/vendorsetup.sh
including device/generic/car/car-armv7-a-neon/vendorsetup.sh
including device/generic/car/car-x86_64/vendorsetup.sh
including device/generic/car/car-x86/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/huawei/angler/vendorsetup.sh
including device/lge/bullhead/vendorsetup.sh
including device/linaro/hikey/vendorsetup.sh
including sdk/bash_completion/adb.bash
jhczz@vaio:~/work/googlesource/Android/android-8.0.0_r1$ lunch
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. car_emu_arm64-userdebug
     10. car_emu_arm-userdebug
     11. car_emu_x86_64-userdebug
     12. car_emu_x86-userdebug
     13. mini_emulator_arm64-userdebug
     14. m_e_arm-userdebug
     15. m_e_mips64-eng
     16. m_e_mips-userdebug
     17. mini_emulator_x86_64-userdebug
     18. mini_emulator_x86-userdebug
     19. aosp_dragon-userdebug
     20. aosp_dragon-eng
     21. aosp_marlin-userdebug
     22. aosp_marlin_svelte-userdebug
     23. aosp_sailfish-userdebug
     24. aosp_angler-userdebug
     25. aosp_bullhead-userdebug
     26. aosp_bullhead_svelte-userdebug
     27. hikey-userdebug

Which would you like? [aosp_arm-eng] 2

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=8.0.0
TARGET_PRODUCT=aosp_arm64
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_PLATFORM_VERSION=OPR1
TARGET_BUILD_APPS=
TARGET_ARCH=arm64
TARGET_ARCH_VARIANT=armv8-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=arm
TARGET_2ND_ARCH_VARIANT=armv7-a-neon
TARGET_2ND_CPU_VARIANT=cortex-a15
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.10.0-32-generic-x86_64-with-Ubuntu-16.04-xenial
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=OPR6.170623.010
OUT_DIR=out
AUX_OS_VARIANT_LIST=
============================================
jhczz@vaio:~/work/googlesource/Android/android-8.0.0_r1$ make -j2
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=8.0.0
TARGET_PRODUCT=aosp_arm64
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm64
TARGET_ARCH_VARIANT=armv8-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=arm
TARGET_2ND_ARCH_VARIANT=armv7-a-neon
TARGET_2ND_CPU_VARIANT=cortex-a15
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.10.0-32-generic-x86_64-with-Ubuntu-16.04-xenial
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=OPR6.170623.010
OUT_DIR=out
============================================
[36/38] out/soong/.bootstrap/bin/minibp out/soong/.minibootstrap/build.ninja.in

...Android 就此開始編譯．