JDK 8源码编译

安装Mercurial

安装Mercurial：https://www.mercurial-scm.org/downloads

以centos7安装为例：

下载rpm包：

wget https://www.mercurial-scm.org/release/centos7/mercurial-6.2.3-1.x86_64.rpm

yum install -y mercurial-6.2.3-1.x86_64.rpm

源码下载

hg clone https://hg.openjdk.java.net/jdk8u/jdk8u

cd jdk8u

chmod a+x get_source.sh

./get_source.sh

得到

配置编译环境

安装openjdk7

yum install java-1.7.0-openjdk-devel

执行configure

./configure

在执行上述命令时，可以看到缺少什么依赖以及提示安装的组件，直接进行安装即可。上述命令执行完之后得到：

====================================================
A new configuration has been successfully created in
/data/jdk8u/build/linux-x86_64-normal-server-release
using default settings.

Configuration summary:
* Debug level:    release
* JDK variant:    normal
* JVM variants:   server
* OpenJDK target: OS: linux, CPU architecture: x86, address length: 64

Tools summary:
* Boot JDK:       java version "1.7.0_261" OpenJDK Runtime Environment (rhel-2.6.22.2.el7_8-x86_64 u261-b02) OpenJDK 64-Bit Server VM (build 24.261-b02, mixed mode)  (at /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.261-2.6.22.2.el7_8.x86_64)
* Toolchain:      gcc (GNU Compiler Collection)
* C Compiler:     Version 4.8.5 (at /usr/bin/gcc)
* C++ Compiler:   Version 4.8.5 (at /usr/bin/g++)

Build performance summary:
* Cores to use:   1
* Memory limit:   1837 MB

安装依赖

sudo yum install make unzip zip -y

sudo yum groupinstall "Development Tools" -y

sudo yum install libXtst-devel libXt-devel libXrender-devel -y

sudo yum install cups-devel -y

sudo yum install freetype-devel -y

sudo yum install alsa-lib-devel -y

sudo yum install fontconfig-devel -y

执行编译

make all

编译完成之后，得到输出

执行本地安装

make install

得到

查看java版本

/usr/local/jvm/openjdk-1.8.0-internal/bin/java -version