MacOS-10.15.6 编译 OpenJdk 16.15 源码及 Clion 调试

MacOS-10.15.6 编译 OpenJdk 16.15 源码及 Clion 调试

1. 下载最新版本源码

• 下载地址

  https://github.com/openjdk/jdk/tags

• 编译 openjdk 过程中使用的具体版本下载地址

  https://github.com/openjdk/jdk/archive/jdk-16+15.zip

2. 源码编译

# 主流程
Get the complete source code:
bash get_source.sh

Run configure:
bash configure

If configure fails due to missing dependencies (to either the toolchain, external libraries or the boot JDK), most of the time it prints a suggestion on how to resolve the situation on your platform. Follow the instructions, and try running bash configure again.

Run make:
make images

Verify your newly built JDK:
./build/*/images/jdk/bin/java -version

Run basic tests:
make run-test-tier1

# 实际操作
1. 安装依赖工具
brew install autoconf
2. 配置
bash ./configure  --enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-14.0.2.jdk/Contents/Home --with-debug-level=slowdebug --with-target-bits=64  --with-native-debug-symbols=internal --disable-warnings-as-errors  --with-jvm-variants=server
3. 编译
make images
4. 验证编译后的 jdk
./build/*/images/jdk/bin/java -version
./build/macosx-x86_64-server-slowdebug/jdk/bin/java -version

openjdk version "16-internal" 2021-03-16
OpenJDK Runtime Environment (slowdebug build 16-internal+0-adhoc.Tao.jdk-jdk-16-15)
OpenJDK 64-Bit Server VM (slowdebug build 16-internal+0-adhoc.Tao.jdk-jdk-16-15, mixed mode)

3. 过程日志

## 部分日志
## 配置
1. bash ./configure  --enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-14.0.2.jdk/Contents/Home --with-debug-level=slowdebug --with-target-bits=64  --with-native-debug-symbols=internal --disable-warnings-as-errors  --with-jvm-variants=server

Configuration summary:
* Debug level:    slowdebug
* HS debug level: debug
* JVM variants:   server
* JVM features:   server: 'aot cds compiler1 compiler2 dtrace epsilongc g1gc graal jfr jni-check jvmci jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc'
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
* Version string: 16-internal+0-adhoc.Tao.jdk-jdk-16-15 (16-internal)

Tools summary:
* Boot JDK:       java version "14.0.2" 2020-07-14 Java(TM) SE Runtime Environment (build 14.0.2+12-46) Java HotSpot(TM) 64-Bit Server VM (build 14.0.2+12-46, mixed mode, sharing)  (at /Library/Java/JavaVirtualMachines/jdk-14.0.2.jdk/Contents/Home)
* Toolchain:      clang (clang/LLVM from Xcode 11.7)
* C Compiler:     Version 11.0.3 (at /usr/bin/clang)
* C++ Compiler:   Version 11.0.3 (at /usr/bin/clang++)

Build performance summary:
* Cores to use:   8
* Memory limit:   16384 MB

## 生成镜像
2. make images

Updating support/demos/image/jfc/TransparentRuler/src.zip
Creating support/demos/image/jfc/CodePointIM/CodePointIM.jar
Creating support/demos/image/jfc/FileChooserDemo/FileChooserDemo.jar
Creating support/demos/image/jfc/SwingSet2/SwingSet2.jar
Creating support/demos/image/jfc/Font2DTest/Font2DTest.jar
Creating support/demos/image/jfc/J2Ddemo/J2Ddemo.jar
Creating support/demos/image/jfc/Metalworks/Metalworks.jar
Creating support/demos/image/jfc/Notepad/Notepad.jar
Creating support/demos/image/jfc/Stylepad/Stylepad.jar
Creating support/demos/image/jfc/SampleTree/SampleTree.jar
Creating support/demos/image/jfc/TableExample/TableExample.jar
Creating support/demos/image/jfc/TransparentRuler/TransparentRuler.jar
Creating jdk image
Creating CDS archive for jdk image
Creating CDS-NOCOOPS archive for jdk image
Stopping sjavac server
Finished building target 'images' in configuration 'macosx-x86_64-server-slowdebug'

## 查看 jdk 版本信息
3. ./build/macosx-x86_64-server-slowdebug/jdk/bin/java -version

openjdk version "16-internal" 2021-03-16
OpenJDK Runtime Environment (slowdebug build 16-internal+0-adhoc.Tao.jdk-jdk-16-15)
OpenJDK 64-Bit Server VM (slowdebug build 16-internal+0-adhoc.Tao.jdk-jdk-16-15, mixed mode)

4. Clion Debug class

4.1 编译器忽略错误退出

# Works once enabled through the ~/.lldbinit in the home directory.
echo 'settings set target.load-cwd-lldbinit true' > ~/.lldbinit

4.2 Clion 打开 openjdk 源码并在 java main 函数打断点

main 函数路径（src/java.base/share/native/launcher/main.c）

EYOKDT

4.3 Custom build targets for OpenJDK

4.3.1 编写 java 测试代码并生成 class 文件

// Hello.java
public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello World !!!\nWow! Hotspot debug mode !!!");
    }
}
// 编译 
javac Hello.java
// 测试 Hello.class
java Hello
// 输出结果
Hello World !!!
Wow! Hotspot debug mode !!!

4.3.2 配置 openjdk 调试 Hello.class 字节码

• 创建启动配置项

  UC8ZUI

• 自定义构建应用

  xwSMsB

  说明：

  1. 创建 Custom Build Application

  2. 参考下面 Configure Custom Build Target

  3. 编译后 openjdk java 命令（./build/macosx-x86_64-server-slowdebug/jdk/bin/java）

  4. Hello.class 文件名称

  5. Hello.class 文件所在路径（必须使用 class 文件所在的绝对路径）

  6. 移除 Before launch 中的 build ,我们的 openjdk 源码是编译完成的，不需要 build

• Configure Custom Build Target

  1. 点击箭头位置

     mqDiBm

2. 配置参数

   QZunmZ
   1. 创建 External tools
   2. name 与 description 可以写 openjdk 编译后的文件夹名称 （macosx-x86_64-server-slowdebug）
   3. make 命令
   4. CONF 参数
   5. openjdk 源码的根路径

• 点击 Clion debug 按钮 调试 Hello.class

  JShfWH

• Hello.class 最终执行结果验证

  9qxWt7

• 参考地址

  https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/

5. 问题及建议

5.1 autoconf 异常

# 问题
Autoconf is not found on the PATH, and AUTOCONF is not set.
You need autoconf to be able to generate a runnable configure script.
You might be able to fix this by running 'brew install autoconf'.
Error: Cannot find autoconf
# 解决方案
brew install autoconf

5.2 jdk 版本问题

## 问题
configure: Potential Boot JDK found at /Library/Java/JavaVirtualMachines/jdk-10.0.2.jdk/Contents/Home is incorrect JDK version (java version "10.0.2" 2018-07-17); ignoring
configure: (Your Boot JDK version must be one of: 14 15 16)
configure: Could not find a valid Boot JDK. OpenJDK distributions are available at http://jdk.java.net/.
configure: This might be fixed by explicitly setting --with-boot-jdk

## 解决方案
添加 --with-boot-jdk，指定高版本 JDK 路径，JDK 版本必须为 14，15，16,可以去 oracle 官网下载对应版本的 jdk
bash ./configure  --enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-14.0.2.jdk/Contents/Home --with-debug-level=slowdebug --with-target-bits=64  --with-native-debug-symbols=internal --disable-warnings-as-errors  --with-jvm-variants=server

5.3 Tips

编译配置参数（--enable-dtrace 等）参考OpenJdk GitHub 官方编译文档说明

5.4 java 运行命令

## 启动方式
jar     : java -jar hello.jar
class   : java Hello

6. 参考文档

https://github.com/openjdk/jdk/blob/master/doc/building.md

https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/

http://www.txazo.com/jvm/jvm-startup.html

https://www.cnblogs.com/bolingcavalry/p/11495456.html