CentOS7编译jdk17

拉取 jdk17 的源码

这里准备了一份：https://github.com/susamlu/jdk20240618，branch：jdk-17+35

使用 Linux 编译 jdk17

系统版本：CentOS Linux release 7.9.2009 (Core)

安装 jdk16

1. wget https://download.java.net/openjdk/jdk16/ri/openjdk-16+36_linu...（可从这里找到：https://jdk.java.net/java-se-ri/16）
2. 解压：tar -zxvf openjdk-16+36_linux-x64_bin.tar.gz

3. 配置：

   • vim ~/.bash_profile
   • source ~/.bash_profile

   export JAVA_HOME=/home/jdk/jdk-16
   export CLASSPATH=.:${JAVA_HOME}/lib
   export PATH=${JAVA_HOME}/bin:$PATH

4. 验证：java -version

编译过程

1. bash configure

1. configure: error: Could not find all X11 headers (shape.h Xrender.h Xrandr.h XTest.h Intrinsic.h).

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

2. configure: error: Could not find fontconfig!

   sudo yum install fontconfig-devel -y

2. make clean

3. make all

1. gcc: error: unrecognized command line option '-std=c++14'

   sudo yum install centos-release-scl -y
   sudo yum install devtoolset-7 -y
   sudo scl enable devtoolset-7 bash

   重新运行 bash configure、make clean，再运行 make all
   编译需要点时间，需要耐心等待......
   编译成功，就可以测试了

测试 jdk17

1. 配置：

   • vim ~/.bash_profile
   • source ~/.bash_profile

   export JAVA_HOME=/home/jdk/jdk/build/linux-x86_64-server-release/images/jdk
   export CLASSPATH=.:${JAVA_HOME}/lib
   export PATH=${JAVA_HOME}/bin:$PATH

2. 验证版本：java -version

   openjdk version "17-internal" 2021-09-14
   OpenJDK Runtime Environment (build 17-internal+0-adhoc.root.jdk)
   OpenJDK 64-Bit Server VM (build 17-internal+0-adhoc.root.jdk, mixed mode, sharing)

3. 使用代码验证
   测试代码：

   public class JvmTest {
     
    public static void main(String[] args) {
        System.out.println(System.getProperty("os.name"));
        System.out.println(System.getProperty("user.home"));
        System.out.println(System.getProperty("java.version"));
        System.out.println(System.getProperty("java.vendor.url"));
    }
     
   }

   javac JvmTest.java
   java JvmTest

   Linux
   /home/jdk
   17-internal
   https://openjdk.java.net/