CentOS7编译openjdk7
环境介绍
centos:CentOS-7-x86_64-DVD-1708
openjdk:openjdk-7u75-src-b13-18_dec_2014.zip,下载地址：
https://download.java.net/openjdk/jdk7u75/ri/openjdk-7u75-src-b13-18_dec_2014.zip
jdk-7u80-linux-x64.tar.gz:用来编译openjdk的jdk编译过程
查询centos7自带的jdk1.8
pm -qa | grep java 命令来查询出系统自带的jdk
[root@localhost ~]# rpm -qa | grep java
java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64
java-1.7.0-openjdk-1.7.0.141-2.6.10.5.el7.x86_64
javapackages-tools-3.4.1-11.el7.noarch
java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.5.el7.x86_64
tzdata-java-2017b-1.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.131-11.b12.el7.x86_64
python-javapackages-3.4.1-11.el7.noarch- 卸载centos7自带的jdk1.8
通过 rpm -e –nodeps 后面跟系统自带的jdk名 这个命令来删除系统自带的jdk
[root@localhost ~]# rpm -e –nodeps java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64
[root@localhost ~]# rpm -e –nodeps java-1.8.0-openjdk-headless-1.8.0.131-11.b12.el7.x86_64
[root@localhost ~]# rpm -e –nodeps java-1.7.0-openjdk-1.7.0.141-2.6.10.5.el7.x86_64
[root@localhost ~]# rpm -e –nodeps java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.5.el7.x86_64 - 构建编译环境
[root@localhost ~]# yum install build-essential gawk m4 openjdk-6-jdk libasound2-dev libcups2-dev libxrender-dev xorg-dev xutils-dev xllproto-print-dev binutils libmotif3 libmotif-dev ant
[root@localhost ~]# sudo yum install gcc-c++ libstdc++-devel - 设置环境变量
[root@localhost local]# vi ~/.bashrc
语言选项,这个必须设置,否则编译好后会出现一个HashTable的NPE错
export LANG=C
Bootstrap JDK的安装路径。必须设置
export ALT_BOOTDIR=/usr/local/java/jdk
允许自动下载依赖
export ALLOW_DOWNLOADS=true
并行编译的线程数,设置为和CPU内核数量一致即可
export HOTSPOT_BUILD_J0BS=6
export ALT_PARALLEL_COMPILE_JOBS=6
比较本次build出来的映像与先前版本的差异。这对我们来说没有意义,
必须设置为false,香则sanity检查会报缺少先前版本JDK的映像的错误提示。
如桌已经设置dev或者DEV_ONLY=true,这个不显式设置也行
export SKIP_COMPARE_IMAGES=true
使用预编译头文件,不加这个编译会更慢一些
export USE_PRECOMPILED_HEADER=true
要编译的内容
export BUILD_LANGTOOLS=true
export BUILD_JAXP=false
export BUILD_JAXWS=fa1se
export BUILD_CORBA=false
export BUILD_HOTSPOT=true
export BUILD_JDK=true
要编译的版本
export SKIP_DEBUG_BUILD=false
export SKIP_FASTDEBUG_BUILD=true
export DEBUG_NAME=debug
把它设置为false可以避开javaws和浏览器Java插件之类的部分的build
BUILD_DEPLOY=false
把它设置为false就不会build出安装包。因为安装包里有些奇怪的依赖,
但即便不build出它也已经能得到完整的JDK映像,所以还是别build它好了
BUILD_INSTALL=false
编译结果所存放的路径
export ALT_OUTPUTDIR=/usr/local/openjdk/build
export PATH= ALT_BOOTDIR/bin
这两个环境变量必须去掉,不然会有很诡异的事情发生（我没有具体查过这些 “诡异的
事情” ,Makefile脚本裣查到有这2个变量就会提示警告)
unset JAVA_HOME
unset CLASSPATH
[root@localhost local]# source ~/.bashrc - 创建一个目录
[root@localhost local]# mkdir /usr/local/openjdk/build - 检查前面设置是否全部正确
[root@localhost openjdk]# make sanity
错误：ERROR: You seem to not have installed ALSA 0.9.1 or higher.
解决：[root@localhost openjdk]# sudo yum install alsa-lib-devel
错误：ERROR: You do not have access to valid Cups header files.
解决：[root@localhost openjdk]# sudo yum install cups-devel.x86_64
错误：ERROR: FreeType version 2.3.0 or higher is required.
解决：[root@localhost openjdk]# sudo yum install freetype-devel
出现下面内容 ，通过
Previous JDK Settings:
PREVIOUS_RELEASE_PATH =
ALT_PREVIOUS_RELEASE_PATH =
PREVIOUS_JDK_VERSION = 1.6.0
ALT_PREVIOUS_JDK_VERSION =
PREVIOUS_JDK_FILE =
ALT_PREVIOUS_JDK_FILE =
PREVIOUS_JRE_FILE =
ALT_PREVIOUS_JRE_FILE =
PREVIOUS_RELEASE_IMAGE =
ALT_PREVIOUS_RELEASE_IMAGE =
Sanity check passed. - 编译
[root@localhost ~]# make
错误：/usr/bin/ld: cannot find -lstdc++
解决：[root@localhost openjdk]# sudo yum install libstdc++-static.x86_64
错误：ERROR: Cannot chcon libjvm.so
解决：make clean 后再make
错误：Error: time is more than 10 years from present: 1136059200000
解决：[root@localhost openjdk]# vi jdk/src/share/classes/java/util/CurrencyData.properties
将所有的日期改为10年内
错误：/usr/bin/ld: cannot find -lX11
解决：[root@localhost openjdk]# sudo yum install libX11-devel
错误：fatal error: X11/Intrinsic.h: No such file or directory
解决：[root@localhost openjdk]# yum install libX* - 编译成功
#– Build times ———-
Target all_product_build
Start 2018-06-24 02:30:16
End 2018-06-24 02:49:23
00:00:26 corba
00:00:10 hotspot
00:00:04 jaxp
00:00:07 jaxws
00:18:14 jdk
00:00:06 langtools
00:19:07 TOTAL
make[1]: Leaving directory `/usr/local/openjdk’