Mac 编译 openjdk
一、编译环境
1. MacOS High Sierra 10.13.2
2. XCode 9.4.1（Command Line Tools)
3. jdk版本：jdk7u71
- 网盘下载
- 或者通过官网下载
4. openjdk: jdk8u-dev
- 网盘下载地址
- 或者通过mercurial工具下载
由于 openjdk 官方的源码不是用 git 管理的,源代码存放在 http://hg.openjdk.java.net/,首先需要安装版本管理工具mercurial, mac 上直接使用brew 进行安装即可.
brew install mercurial
- 下载合适版本的源码,我用的编译版本是
jdk8u-dev.
克隆源代码
hg clone http://hg.openjdk.java.net/jdk8u/jdk8u-dev/
克隆完成后,使用脚本获取最新的源代码
cd jdk8u-dev
sh ./get_source.sh # 根据网络环境的不同,这一步花费的时间不同,一般花费时间较长5. FreeType安装
- 可直接下载安装XQuartz
- 或者下载：https://mac.softpedia.com/get/Development/Libraries/FreeType.shtml，解压后通过如下命令安装：
sudo ./configure
make
make install6. Ant1.9.13安装
（1）下载
- 网盘下载
- 官网下载
（2）解压到指定目录，并配置环境变量
export ANT_HOME=$HOME/Documents/Software/JVM/apache-ant-1.9.13
export PATH=$PATH:$ANT_HOME/bin
export PATH=$PATH:$ANT_HOME/lib二、编译
1. 打开terminal定位到jdk8u-dev根目录
2. 输入如下命令
#语言选项，必须设置
export LANG=C
export CC=clang #mac平台，c编译器不再是GCC,而是clang
export COMPILER_WARNINGS_FATAL=false #跳过clang一些严格的语法检查
#允许自动下载依赖
export ALLOW_DOWNLOADS=true
export LFLAGS='-Xlinker -lc++ -lstdc++'
#并行编译的线程数，设置为和cpu内核数量一致即可
export HOTSPOT_BUILD_JOBS=4
export ALT_PARALLEL_COMPILE_JOBS=4
export SKIP_COMPARE_IMAGES=true
export USE_PRECOMPILED_HEADER=true
#要编译的内容
export BUILD_LANGTOOLS=true
#export BUILD_JAXP=false
#export BUILD_JAXWS=false
#export BUILD_CORBA=false
export BUILD_HOTSPOT=true
export BUILD_JDK=true
BUILD_DEPLOY=false
BUILD_INSTALL=false
unset JAVA_HOME
unset CLASSPATH3. 执行配置文件校验
bash ./configure开始校验环境配置，正常会遇到如下问题：
（1）error: Xcode 4 is required to build JDK 8
（2）error: A gcc compiler is required
（3）error: Could not find freetype
请分别参考如下《三、问题解决》来解决。
4. 校验完成后的大概提示如下
====================================================
A new configuration has been successfully created in
/Users/davi/Documents/jdk8u-dev/build/macosx-x86_64-normal-server-release
using configure arguments '--with-freetype-include=/usr/local/include/freetype2 --with-freetype-lib=/usr/local/lib/'.
Configuration summary:
* Debug level: release
* 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_71" Java(TM) SE Runtime Environment (build 1.7.0_71-b14) Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode) (at /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home)
* Toolchain: gcc (GNU Compiler Collection)
* C Compiler: Version 9.1.0 (at /usr/bin/clang)
* C++ Compiler: Version 9.1.0 (at /usr/bin/g++)
Build performance summary:
* Cores to use: 4
* Memory limit: 16384 MB5. 开始编译
make all编译时需要耐心等待，若出现如下提示，表示已成功编译
----- Build times -------
Start 2018-09-23 11:34:32
End 2018-09-23 11:43:34
00:00:20 corba
00:00:25 demos
00:01:39 docs
00:02:06 hotspot
00:00:51 images
00:00:13 jaxp
00:00:22 jaxws
00:02:24 jdk
00:00:29 langtools
00:00:12 nashorn
00:09:02 TOTAL
-------------------------
Finished building OpenJDK for target 'all'编译过程中可能会出现的问题：
error: invalid argument '-std=gnu++98' not allowed with 'C'
请参考《三、问题解决》来解决。
其他问题请参考如下博文：
- mac 10.13.x编译openjdk8
- Mac os下编译openJDK 7
三、问题解决
1. error: Xcode 4 is required to build JDK 8
error: Xcode 4 is required to build JDK 8, the version found was . Use --with-xcode-path to specify the location of Xcode 4 or make Xcode 4 active by using xcode-select.解决办法：
找到configure 文件并打开vim common/autoconf/generated-configure.sh,找到判断版本的地方,将这一段全部注释掉.
# Fail-fast: verify we're building on Xcode 4, we cannot build with Xcode 5 or later
XCODE_VERSION=`$XCODEBUILD -version | grep '^Xcode ' | sed 's/Xcode //'`
XC_VERSION_PARTS=( ${XCODE_VERSION//./ } )
if test ! "${XC_VERSION_PARTS[0]}" = "4"; then
as_fn_error $? "Xcode 4 is required to build JDK 8, the version found was $XCODE_VERSION. Use --with-xcode-path to specify the location of Xcode 4 or make Xcode 4 active by using xcode-select." "$LINENO" 5
fi2. error: A gcc compiler is required（找不到gcc 编译器）
configure: error: A gcc compiler is required. Try setting --with-tools-dir.
configure exiting with result code 1
解决办法：
找到configure 文件并打开vim common/autoconf/generated-configure.sh,有多处校验的地方,找到并且注释掉校验的逻辑.
if test $? -ne 0; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&5
$as_echo "$as_me: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&6;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: The result from running it was: \"$COMPILER_VERSION_OUTPUT\"" >&5
$as_echo "$as_me: The result from running it was: \"$COMPILER_VERSION_OUTPUT\"" >&6;}
as_fn_error $? "A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir." "$LINENO" 5
fi3. error: Could not find freetype
configure: error: Could not find freetype!
configure exiting with result code 1解决办法：
bash ./configure --with-freetype-include=/usr/local/include/freetype2 --with-freetype-lib=/usr/local/lib/
4. error: invalid argument '-std=gnu++98' not allowed with 'C'
error: invalid argument '-std=gnu++98' not allowed with 'C'
make[6]: *** [libjsig.dylib] Error 1
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [the_vm] Error 2
make[4]: *** [product] Error 2
make[3]: *** [generic_build2] Error 2
make[2]: *** [product] Error 2
make[1]: *** [/Users/davi/Documents/jdk8u-dev/build/macosx-x86_64-normal-server-release/hotspot/_hotspot.timestamp] Error 2
make: *** [hotspot-only] Error 2解决办法：
找到configure 文件并打开vim common/autoconf/generated-configure.sh，找到如下代码并注释掉
CXXSTD_CXXFLAG="-std=gnu++98"然后make clean，重新执行 configure, 即
bash ./configure --with-freetype-include=/usr/local/include/freetype2 --with-freetype-lib=/usr/local/lib/
然后重新make all
5. clang: error: unknown argument: '-fpch-deps'
解决方法:
（1）首先查找对应的配置文件
find . -type f ! -name "*.java" | xargs grep -r "\-fpch\-deps"1.1 匹配的查找结果如下（Mac来源于BSD，选择BSD）
./hotspot/make/bsd/makefiles/gcc.make:DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
./hotspot/make/linux/makefiles/gcc.make:DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
./hotspot/make/solaris/makefiles/gcc.make:DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d) 2.2 修改hotspot/make/bsd/makefiles/gcc.make
注释216-218行
# Flags for generating make dependency flags.
# ifneq ("${CC_VER_MAJOR}", "2")
# DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
# endif6. Symbol not found: __cg_jpeg_resync_to_restart
Using java runtime at: /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre
Error occurred during initialization of VM
Unable to load native library: dlopen(/Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre/lib/libjava.dylib, 1): Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/libTIFF.dylib
Expected in: /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre/lib/libJPEG.dylib
in /System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/libTIFF.dylib
解决办法：
sudo ln -sf libTIFF.dylib /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre/lib/libJPEG.dylib
sudo ln -sf libPng.dylib /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre/lib/libPng.dylib
sudo ln -sf libTIFF.dylib /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/jre/lib/libTIFF.dylib