下载编译Android 2.3 源代码 ._xargs-32下载-优快云博客

转载： http://blog.youkuaiyun.com/sfezst/article/details/6220368

前期准备：

$ cd ~

$ mkdir mydroid

安装Java 6 (在之前的日志里写到过在Ubuntu上安装Java6，这里就不再记录)

安装好Git和curl, Ubuntu 下用apt-get安装：

sudo apt-get install git-core curl

用curl 下载repo

$ cd ~ && mkdir bin

# export PATH=$PATH:~/bin/

$ curl http://android.git.kernel.org/repo >~/bin/repo

$ chmod a+x ./bin/repo

下载android源代码

(这里以下载android 2.3的brunch分支上的代码为例)

$cd ~/mydroid

$repo init -u git://android.git.kernel.org/platform/manifest.git -b gingerbread

$repo sync

(可以使用repo 的-j参数来增加下载线程，比如repo sync -j 10)

下载完后，编译 HOW TO BUILD ON 32-BIT SYSTEM

(因为android 2.2以上Google是用64位的机子编译的，所以对一些mk文件做了修改，如果想在32位机子上编译，需要作如下修改：

$ find . -name '*.mk' | xargs sed -i 's/-m64//g'

//这一步用来删除当前目录下（包括子文件）中包行的-m64字段或者也可以手工修改 {

external/clearsilver/cgi/Android.mk,
external/clearsilver/java-jni/Android.mk,
external/clearsilver/util/Android.mk,
external/clearsilver/cs/Android.mk

change
LOCAL_CFLAGS += -m64
LOCAL_LDFLAGS += -m64
to
LOCAL_CFLAGS += -m32
LOCAL_LDFLAGS += -m32

$ export TARGET_BUILD_VARIANT=user

修改 build/core/main.mk 注释一下内容
ifneq (64,$(findstring 64,$(build_arch)))
$(warning ************************************************************)
$(warning You are attempting to build on a 32-bit system.)
$(warning Only 64-bit build environments are supported beyond froyo/2.2.)
$(warning ************************************************************)
$(error stop)
endif

)

$ . build/env_setup.sh

$ lunch

(选择需要的编译目标)

$ make

(我试着用make -j2去编译，但是因为运行移动硬盘上的虚拟机，最后卡死，无奈之下只能用make).

编译完后，会生成

Target system fs image: out/target/product/generic/obj/PACKAGING/systemimage_intermediates/system.img

Install system fs image: out/target/product/generic/system.img

Installed file list: out/target/product/generic/installed-files.txt

可以将system.img和ramdisk.img拷贝到SDK的images/目录中，然后启动模拟器测试。

或者用sdk中的 emulator运行，还需要做如下修改：

view plain copy to clipboard print ?

export PATH=$PATH:~/Android/mydroid/out/host/linux-x86/bin
export ANDROID_PRODUCT_OUT=~/Android/mydroid/out/target/product/generic/
ln -sf /home/smrdn/Android/mydroid/prebuilt/android-arm/kernel/kernel-qemu /home/smrdn/Android/mydroid/out/target/product/generic/

FAQ:

issue "host C: libclearsilver-jni <= external/clearsilver/java-jni/j_neo_util.c
In file included from /usr/include/features.h:378,
from /usr/include/string.h:26,
from external/clearsilver/java-jni/j_neo_util.c:1:
/usr/include/gnu/stubs.h:9:27: error: gnu/stubs-64.h: 没有那个文件或目录
make: *** [out/host/linux-x86/obj/SHARED_LIBRARIES/libclearsilver- jni_intermediates/j_neo_util.o]错误"

How to fix:
sudo apt-get install lib64z1-dev libc6-dev-amd64 g++-multilib lib64stdc++6

Issue: make: *** No rule to make target `out/debug/host/linux-x86/pr/sim/obj/lib/libdl.so', needed by `out/debug/host/linux-

x86/pr/sim/obj/SHARED_LIBRARIES/libnfc_intermediates/LINKED/libnfc.so'. Stop.

frameworks/base/media/libmedia/MediaScanner.cpp: In function ‘bool android::fileMatchesExtension(const char*, const char*)’:

frameworks/base/media/libmedia/MediaScanner.cpp:84: error: invalid conversion from ‘const char*’ to ‘char*’

frameworks/base/media/libmedia/MediaScanner.cpp:90: error: invalid conversion from ‘const char*’ to ‘char*’

make: *** [out/debug/host/linux-x86/pr/sim/obj/SHARED_LIBRARIES/libmedia_intermediates/MediaScanner.o] Error 1

make: *** Waiting for unfinished job.

>> add (char*) strrchr

$ find . -name '*.cpp' | xargs sed -i 's/strrchr/(char*)strrchr/g'

不过之后还需要将*Q_strrchr被错误修改为*Q_(char*)strrchr做修改，不太了解sed的具体用法

or 需要将gcc编译环境设置为4.3版本，否则会出现const char* 到 char*无法转换的问题。

参考：