MAC下 JDK8源码编译

此文记录下自己在mac上编译openjdk8的实际操作过程，以及期间出现的问题和解决方式

实操

编译源码

1. 安装 mercurial
   brew install hg 或者 brew install mercurial

   加速编译
   brew install ccache

2. 下载源码

   hg clone http://hg.openjdk.java.net/jdk8u/jdk8u
   cd jdk8u
   bash get_source.sh
   

3. 阅读源码根目录下README-builds.html 文件，按照文档给出的指导进行下面的编译操作

4. 下载安装jdk7,jdk7和8是可以共存的

5. 执行配置 bash ./configure --enable-ccache --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home --with-debug-level=slowdebug --with-native-debug-symbols=internal
   报错

   configure: error: Failed to determine Xcode version.
   # 查看xcode版本
   xcodebuild -version
   # 报错
   xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance
   # 由于本地安装了xcode 则直接执行下面的命令 问题解决
   sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
   

   报错

   configure: error: Could not find freetype!
   ## 安装
   brew install freetype
   

   最终输出信息

   ====================================================
   A new configuration has been successfully created in
   /Users/admin/Workspace/src/jdk8u/build/macosx-x86_64-normal-server-slowdebug
   using configure arguments '--with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home --with-debug-level=slowdebug --with-native-debug-symbols=internal'.
   Configuration summary:
   * Debug level:
   slowdebug
   * JDK variant:
   normal
   * JVM variants:
   server
   * OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
   Tools summary:
   * Boot JDK:
   java version "1.7.0_80" Java(TM) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
   (at /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home)
   * Toolchain:
   clang (clang/LLVM)
   * C Compiler:
   Version 12.0.5 (at /usr/bin/clang)
   * C++ Compiler:
   Version 12.0.5 (at /usr/bin/clang++)
   Build performance summary:
   * Cores to use:
   4
   * Memory limit:
   16384 MB
   

6. 编译
   CONF参数可以不指定
   make images JOBS=8 CONF=macosx-x86_64-normal-server-slowdebug

7. 验证是否成功
   ./build/macosx-x86_64-normal-server-release/jdk/bin/java -version
/Users/admin/Workspace/src/jdk8u/build/macosx-x86_64-normal-server-slowdebug/jdk/bin/java -version

debug

gdb

很遗憾mac 环境下没法用会卡住，现在官方还没给出解决方案
gdb --args /Users/admin/Workspace/src/jdk8u/build/macosx-x86_64-normal-server-slowdebug/jdk/bin/java -version

lldb

由于gdb 没法用 ，lldb是个非常好的替代方案
lldb -- /Users/admin/Workspace/src/jdk8u/build/macosx-x86_64-normal-server-slowdebug/jdk/bin/java -version

可能会碰到线程中断的问题

* thread #3, stop reason = signal SIGSEGV
frame #0: 0x0000000108cc42b4
->
0x108cc42b4: movl
(%rsi), %eax
0x108cc42b6: leaq
0xf8(%rbp), %rsi
0x108cc42bd: vmovdqu %ymm0, (%rsi)
0x108cc42c1: vmovdqu %ymm7, 0x20(%rsi)
Target 0: (java) stopped.

解决方式

process handle -p true -n true -s true SIGSEGV
c

最终成功

链接

jdk github
openjdk
openjdk8 github

最后

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