Build OpenJDK 8 on macOS

前置

环境依赖:

获得源码

git clone --recurse-submodules --depth 1 https://github.com/openjdk/jdk.git

libffi

git clone --depth 1 git@github.com:libffi/libffi.git
cd libffi
./autogen.sh && \
    python ./generate-darwin-source-and-headers.py && \
    ./configure --enable-debug --enable-purify-safety --prefix=${LOCAL_DIR} && \
    make -j4 && make install  

生成Makefile

make clean ; make dist-clean;
sh ./configure --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-1.8.jdk/Contents/Home/ \
    --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin \
    --with-boot-jdk-jvmargs="-XX:+UseG1GC -Xms8G -Xmx8G" \
    --with-toolchain-type=clang \
    --with-native-debug-symbols=none \
    --with-target-bits=64 \
    --with-num-cores=12 \
    --with-jobs=12

Zero Slowdebug `configure` 成功输出

====================================================
A new configuration has been successfully created in
/Volumes/sm/github/jdk/jdkbuild/build/macosx-x86_64-zero-slowdebug
using configure arguments '--enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-21.jdk/Contents/Home/ --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin --disable-warnings-as-errors --with-boot-jdk-jvmargs='-XX:+UseG1GC -Xms8G -Xmx8G' --with-toolchain-type=clang --with-debug-level=slowdebug --with-native-debug-symbols=internal --with-jvm-variants=zero --with-hsdis=binutils --with-binutils-src=/Volumes/sm/github/jdk/jdkbuild/src/utils/hsdis/binutils-2.37 --with-target-bits=64 --with-libffi=/Users/yakir/local/brew/opt/libffi --with-num-cores=12 --with-jobs=12'.

Configuration summary:
* Name:           macosx-x86_64-zero-slowdebug
* Debug level:    slowdebug
* HS debug level: debug
* JVM variants:   zero
* JVM features:   zero: 'cds dtrace epsilongc g1gc jni-check jvmti management parallelgc serialgc services shenandoahgc vm-structs zero'
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
* Version string: 22-internal-adhoc.yakir.jdkbuild (22-internal)
* Source date:    1688474086 (2023-07-04T12:34:46Z)

Tools summary:
* Boot JDK:       openjdk version "21-ea" 2023-09-19 OpenJDK Runtime Environment (build 21-ea+29-2411) OpenJDK 64-Bit Server VM (build 21-ea+29-2411, mixed mode, sharing) (at /Library/Java/JavaVirtualMachines/jdk-21.jdk/Contents/Home)
* Toolchain:      clang (clang/LLVM from Xcode 14.3.1)
* Sysroot:        /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk
* C Compiler:     Version 14.0.3 (at /usr/bin/clang)
* C++ Compiler:   Version 14.0.3 (at /usr/bin/clang++)

Build performance summary:
* Build jobs:     12
* Memory limit:   32768 MB

The following warnings were produced. Repeated here for convenience:
WARNING: pandoc is version 3.1.4, not the recommended version 2.19.2

Server & Client Fastdebug `configure` 成功输出

====================================================
A new configuration has been successfully created in
/Volumes/sm/github/jdk/jdkbuild/build/macosx-x86_64-serverANDclient-fastdebug
using configure arguments '--enable-dtrace --with-boot-jdk=/Library/Java/JavaVirtualMachines/jdk-16.0.2.jdk/Contents/Home/ --with-toolchain-path=/Applications/Xcode.app/Contents/Developer/usr/bin --disable-warnings-as-errors --with-boot-jdk-jvmargs='-XX:+UseG1GC -Xms8G -Xmx8G' --with-toolchain-type=clang --with-debug-level=fastdebug --with-native-debug-symbols=internal --with-jvm-variants=server,client --with-target-bits=64 --with-libffi=/Users/yakir/local/brew/opt/libffi --with-num-cores=12 --with-jobs=12'.

Configuration summary:
* Name:           macosx-x86_64-serverANDclient-fastdebug
* Debug level:    fastdebug
* HS debug level: fastdebug
* JVM variants:   server client
* JVM features:   server: 'cds compiler1 compiler2 dtrace epsilongc g1gc jfr jni-check jvmci jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc' client: 'cds compiler1 dtrace epsilongc g1gc jfr jni-check jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc'
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64
* Version string: 18-internal+0-adhoc.yakir.jdkbuild (18-internal)

Tools summary:
* Boot JDK:       java version "16.0.2" 2021-07-20 Java(TM) SE Runtime Environment (build 16.0.2+7-67) Java HotSpot(TM) 64-Bit Server VM (build 16.0.2+7-67, mixed mode, sharing) (at /Library/Java/JavaVirtualMachines/jdk-16.0.2.jdk/Contents/Home)
* Toolchain:      clang (clang/LLVM from Xcode 12.5.1)
* C Compiler:     Version 12.0.5 (at /usr/bin/clang)
* C++ Compiler:   Version 12.0.5 (at /usr/bin/clang++)

Build performance summary:
* Build jobs:     12
* Memory limit:   32768 MB

NOTE: You have requested to build more than one version of the JVM, which
will result in longer build times.

The following warnings were produced. Repeated here for convenience:
WARNING: libffi not used, so --with-libffi[-*] is ignored

Make

make JOBS=12 all && make images

# 增量编译
make hotspot
make java.desktop
make jdk.compiler

验证(进`build`目录)

% time ./build/macosx-x86_64-zero-slowdebug/jdk/bin/java -version
openjdk version "21-internal" 2023-09-19
OpenJDK Runtime Environment (slowdebug build 21-internal-adhoc.yakir.jdkbuild)
OpenJDK 64-Bit Zero VM (slowdebug build 21-internal-adhoc.yakir.jdkbuild, interpreted mode)
./build/macosx-x86_64-zero-slowdebug/jdk/bin/java -version  3.95s user 0.07s system 99% cpu 4.052 total

% time /Library/Java/JavaVirtualMachines/jdk-17.0.3.1.jdk/Contents/Home/bin/java -version
java version "17.0.3.1" 2022-04-22 LTS
Java(TM) SE Runtime Environment (build 17.0.3.1+2-LTS-6)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.3.1+2-LTS-6, mixed mode, sharing)
/Library/Java/JavaVirtualMachines/jdk-17.0.3.1.jdk/Contents/Home/bin/java   0.03s user 0.04s system 46% cpu 0.145 total

% time ./build/macosx-x86_64-zero-slowdebug/jdk/bin/java /Volumes/sm/Hello.java 
Hello World
./build/macosx-x86_64-zero-slowdebug/jdk/bin/java /Volumes/sm/Hello.java  34.09s user 0.78s system 107% cpu 32.567 total

对比OpenJDK Java 17

% time /Library/Java/JavaVirtualMachines/jdk-17.0.3.1.jdk/Contents/Home/bin/java /Volumes/sm/Hello.java 
Hello World
/Library/Java/JavaVirtualMachines/jdk-17.0.3.1.jdk/Contents/Home/bin/java   0.65s user 0.05s system 182% cpu 0.386 total

// Hello.java
public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello World");
    }
}

hsdis

cd src/utils/hsdis && 
    make ARCH=amd64 BINUTILS=binutils-2.37 CFLAGS="-Wno-error=logical-not-parentheses -Wno-error=string-plus-int -fbracket-depth=512" && \
    cp build/macosx-amd64/hsdis-amd64.dylib <JDK Home>/Contents/Home/lib/server/

使用: java -XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly

IdealGraphVisualizer

Clion/IDEA 调试

make compile-commands
make compile-commands-hotspot
sh bin/idea.sh

生成compile_commands.json文件, 位于${SRC}/build/macosx-x86_64-zero-slowdebug/目录中同一目录下创建.lldbinit文件,内容如下

settings set target.load-cwd-lldbinit true
br set -n main -o true -G true -C "pro hand -p true -s false SIGSEGV SIGBUS"

在Clion中 Open compile_commands.json文件，选择 open as project

References

Tips & Tricks: Develop OpenJDK in CLion with Pleasure Jetbrains: Tips & Tricks: Develop OpenJDK in CLion with Pleasure

前置