ubuntu12.04上编译openjdk7

获取源码

从openjdk代码仓库获取(比较慢)
  1. 安装mercurial
    Mercurial是一个版本管理工具。
    sudo apt-get install mercurial
  2. 将以下内容添加到$HOME/.hgrc文件中,如果没有则自己创建一个:
    [extensions]
    forest=/home/lichengwu/hgforest-crew/forest.py
    fetch=
  3. 下载jdk7源码
    hg fclone http://hg.openjdk.java.net/jdk7/jdk7
    
直接下载源码包[推荐]
# wget http://www.java.net/download/openjdk/jdk7/promoted/b147/openjdk-7-fcs-src-b147-27_jun_2011.zip
# unzip openjdk-7-fcs-src-b147-27_jun_2011.zip

安装编译必须组件

  1. 安装gcc、g++、make等
    sudo apt-get install build-essential
  2. 安装ant 1.7以上
    sudo apt-get install ant
  3. 安装XRender
    sudo apt-get install libxrender-dev   
    sudo apt-get install xorg-dev 
    
  4. 安装alsa
    sudo apt-get install libasound2-dev
    
  5. Cups
    sudo apt-get install libcups2-dev
    
  6. 安装jdk6
    一般ubuntu都自带,没有的话
    sudo apt-get install openjdk-6-jdk
    

    或者下载oracle的jdk也可以

  7. 安装杂碎
    sudo apt-get install gawk zip libxtst-dev libxi-dev libxt-dev
  8. 安装findbugs??
    我在ubuntu12.04上没有安装findbugs也成功编译了,如果编译失败,请自行安装

准备环境和脚本

!/bin/bash
# cd jdk source code folder
cd ~/openjdk7
# export ALT_BOOTDIR
export LANG=C ALT_BOOTDIR=/home/lichengwu/openjdk_build_files/jdk1.6.0_32
# set build profile
jdk/make/jdk_generic_profile.sh
# disable JAVA_HOME
export -n JAVA_HOME
# export ALT_JDK_IMPORT_PATH
export ALT_JDK_IMPORT_PATH=/home/lichengwu/openjdk_build_files/jdk1.6.0_32
# start build
make DEBUG_NAME=all_fastdebug BUILD_JAXWS=false BUILD_JAXP=false

QA

如果你通过上面步骤就编译成功了,那你真的人品爆发了,以下是我编译时候遇到的问题

  1. 先注释掉 WARNINGS_ARE_ERRORS = -Werror
    vim hotspot/make/linux/makefiles/gcc.make
  2. "*** This OS is not supported:" `uname -a`; exit 1;
    这是由于内核版本太高了,两种方式解决:
    方法一:
    lichengwu@s4:~/bin$ uname -r
    #查看当前的内核版本:
    3.2.0-20-generic
    修改文件/home/thebye85/jdk7/hotspot/make/linux/Makefile
    #在这行最后加上当前的内核版本3.2%,如下:
    lichengwu@s4:~/bin$ SUPPORTED_OS_VERSION = 2.4% 2.5% 2.6% 2.7% 3.2%
    

    方法二:

    vi hotspot/make/linux/Makefile

    注释掉下面代码:
    check_os_version:
    #ifeq ($(DISABLE_HOTSPOT_OS_VERSION_CHECK)$(EMPTY_IF_NOT_SUPPORTED),)
    # $(QUIETLY) >&2 echo "*** This OS is not supported:" `uname -a`; exit 1;
    #endif

  3. sound错误
    cd jdk/make/javax/sound/jsoundalsa
    vim Makefile
    

    #找到CPPFLAGS ,在其结尾,添加 -lasound

  4. make[5]: *** [/home/lichengwu/openjdk7/build/linux-amd64/lib/amd64/libjsoundalsa.so] Error 1
    解决:
    ln -s build/linux-amd64/lib/amd64/libjsound.so 
    build/linux-amd64/lib/amd64/libjsoundalsa.so 
    

    如果ln不行 就用cp

编译结果

corba hotspot langtools 编译时间很短是因为编译在hotspot时候出错,重新编译,如果正常一次跑通,大概半个小时 我用的是虚拟机:

 

########################################################################

#####                                Leaving jdk for target(s) sanity all  images                                      #####

########################################################################

#####                               Build time 00:09:14 jdk for  target(s) sanity all  images                 #####

########################################################################

 

-- Build times ----------

Target all_fastdebug_build

Start 2012-06-13 13:53:38

End   2012-06-13 14:03:13

00:00:07 corba

00:00:08 hotspot

00:09:14 jdk

00:00:06 langtools

00:09:35 TOTAL

查看版本

lichengwu@s4:~/openjdk7/build/linux-amd64/j2sdk-image/bin$ java -version

java version "1.6.0_24"

 

OpenJDK Runtime

 

 Environment (IcedTea6 1.11.1) (6b24-1.11.1-4ubuntu3)

OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)

lichengwu@s4:~/openjdk7/build/linux-amd64/j2sdk-image/bin$ ./java -version

openjdk version "1.7.0-internal-all_fastdebug"

 

OpenJDK Runtime

 

 Environment (build 1.7.0-internal-all_fastdebug-lichengwu_2012_06_13_11_47-b00)

OpenJDK 64-Bit Server VM (build 21.0-b17, mixed mode)

参考资料:

编译:http://hg.openjdk.java.net/jdk7/build/raw-file/tip/README-builds.html
http://thebye85.iteye.com/blog/1545311
关于为啥要自己编译jdk:http://rednaxelafx.iteye.com/blog/1549577

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