如何编译android4（Ubuntu11.10）
完全是一个全新的系统，如何编译android4.0？其实很简单。
1.访问地址http://source.android.com/source/initializing.html
2.按照指示安装一些工具：
$sudoapt-getinstalllibx11-dev:i386
JDK：
$sudoadd-apt-repository"debhttp://archive.canonical.com/lucidpartner"
$sudoapt-getupdate
$sudoapt-getinstallsun-java6-jdk
Python：
$sudoapt-getinstallpython
Git
$sudoapt-getinstallgit
Curl
$sudoapt-getinstallcurl
g++
$sudoapt-getinstallg++
zlib
$sudoapt-getinstallzlib1g-dev
$sudoapt-getinstalllib64z1-dev
bison
$sudoapt-getinstallbison
flex
$sudoapt-getinstallflex
ncurses
$sudoapt-getinstalllibncurses5-dev
GL
$sudoapt-getinstalllibgl1-mesa-dev
gpref
$sudoapt-getinstallgpref
3.http://source.android.com/source/downloading.html
$mkdir~/bin
$PATH=~/bin:$PATH
$curlhttps://dl-ssl.google.com/dl/googlesource/git-repo/repo>~/bin/repo
$chmoda+x~/bin/repo
$mkdirWORKING_DIRECTORY
$cdWORKING_DIRECTORY
$repoinit-uhttps://android.googlesource.com/platform/manifest-bandroid-4.0.1_r1
$reposync
4.build/core/config.mk
去掉Werror这行（目的是不要把warnings当成errors）
5.
修改geditframeworks/base/libs/utils/Android.mk
将：
LOCAL_CFLAGS+=-DLIBUTILS_NATIVE=1$(TOOL_CFLAGS)
改为：
LOCAL_CFLAGS+=-DLIBUTILS_NATIVE=1$(TOOL_CFLAGS)-fpermissive
6.
修改文件
external/oprofile/libpp/Android.mk
external/oprofile/pp/Android.mk
将
LOCAL_CFLAGS:=$(common_host_cflags)
改为
LOCAL_CFLAGS:=$(common_host_cflags)-fpermissive
7.
修改make文件
frameworks/base/tools/aapt/Android.mk
frameworks/base/tools/localize/Android.mk
将这几句
ifeq($(HOST_OS),linux)
LOCAL_LDLIBS+=-lrt
endif
改为
ifeq($(HOST_OS),linux)
LOCAL_LDLIBS+=-lrt-lpthread
endif
8.
修改源码目录下/build/core/combo/HOST_linux-x86.mk文件：
将以下语句
HOST_GLOBAL_CFLAGS+=-D_FORTIFY_SOURCE=0
修改为
HOST_GLOBAL_CFLAGS+=-U_FORTIFY_SOURCE-D_FORTIFY_SOURCE=0
9.
$viexternal/gtest/src/../include/gtest/internal/gtest-param-util.h
+#include<cstddef>
10.http://source.android.com/source/building.html
$sourcebuild/envsetup.sh
$lunchfull-eng
$make-j4