老大哥:编译JDK好难呀,我要放弃Java了,我:别呀,看我的

一次又一次的编译JDK;

一次又一次的失败.

最终

冲破层层难关,来总结一下在Centos7环境下编译OpenJDK的过程.

你可能会问了:我看其他文章里都是要求的一下子装很多很多的软件的呀,在这里怎么一个也不安装了.

你也许翻了10篇文章有9篇文章都写了一堆下面这个玩意:

当然了,并不是不对,是根本不知道怎么来的.

这里我是故意放的一个图片,就是不让你直接复制,哈哈,复制不出来吧,那就对了,跟着我来!!!!!!!

我只想问你,你是不是有一头问号.

没关系,这篇文章让你彻底清醒

这篇文章就是来做你编译jdk的翻的最后的一个博客.

我想教会的你的是如何解决问题,并不是一下子帮你解决好.

这样子才能学到东西

一,创建放置源码的文件夹

因为咱们要编译的是jdk12,所以这里创建一个jdk12的文件夹,可以随意起名字

[root@TrueDei ~]# mkdir jdk12 [root@TrueDei ~]# cd jdk12/ [root@TrueDei jdk12]#  

二,测试是否已经包含了jdk

如果已经存在,请删除或者卸载掉

[root@TrueDei ~]# java  bash: java: 未找到命令 [root@TrueDei ~]#  

三,如何获取Openjdk的源码

可以通过这个网站获取OpenJDK的源码:https://hg.openjdk.java.net/jdk/

你可以选择任意一个你喜欢的

你也可以根据自己的喜好,来选择要下载的压缩包的格式

这个地址就是咱们需要的,或者直接右击上面的格式复制链接地址:https://hg.openjdk.java.net/jdk/jdk12/archive/tip.tar.gz

四,下载jdk源码,并解压

首先你要确定你的Linux是否可以上网

下载源码我们使用的是wget,如果没有,可以安装一下

[root@TrueDei jdk12]# wget https://hg.openjdk.java.net/jdk/jdk12/archive/tip.tar.gz bash: wget: 未找到命令 [root@TrueDei jdk12]# yum -y install wget 

下载jdk的源码

[root@TrueDei jdk12]# wget https://hg.openjdk.java.net/jdk/jdk12/archive/tip.tar.gz 

如果出现下面这个,则是没下载完全:

[root@TrueDei jdk12]# tar -zxf tip.tar.gz   gzip: stdin: unexpected end of file tar: 归档文件中异常的 EOF tar: 归档文件中异常的 EOF tar: Error is not recoverable: exiting now [root@TrueDei jdk12]# 

可以使用windows,或者使用其他物理机下载好,然后想办法传过去

我的物理机是Deepin,所以我可以使用scp命令拷贝过去

truedei@truedei:Downloads$ ll jdk12-06222165c35f.zip  -rw-r--r-- 1 truedei truedei 180327483 5月  20 23:36 jdk12-06222165c35f.zip truedei@truedei:Downloads$  truedei@truedei:Downloads$ scp jdk12-06222165c35f.zip  root@192.168.101.25:/root/jdk12/ root@192.168.101.25's password:  jdk12-06222165c35f.zip                                         100%  172MB  82.4MB/s   00:02     truedei@truedei:Downloads$  

因为需要使用unzip来解压,所以没有的同学先要安装一下

[root@TrueDei jdk12]# yum -y install unzip 

解压

[root@TrueDei jdk12]# unzip jdk12-06222165c35f.zip  

再次解压就没问题了

[root@TrueDei jdk12]# ll 总用量 176104 drwxr-xr-x. 8 root root       271 5月   9 11:21 jdk12-06222165c35f -rw-r--r--. 1 root root 180327483 5月   9 11:20 jdk12-06222165c35f.zip [root@TrueDei jdk12]#  [root@TrueDei jdk12]#  [root@TrueDei jdk12]# ll jdk12-06222165c35f 总用量 48 -rw-r--r--.  1 root root  2114 3月  20 2019 ADDITIONAL_LICENSE_INFO -rw-r--r--.  1 root root  1522 3月  20 2019 ASSEMBLY_EXCEPTION drwxr-xr-x.  3 root root   158 5月   9 11:21 bin -rw-r--r--.  1 root root  1649 3月  20 2019 configure drwxr-xr-x.  3 root root    99 5月   9 11:21 doc -rw-r--r--.  1 root root 19274 3月  20 2019 LICENSE drwxr-xr-x. 23 root root  4096 5月   9 11:21 make -rw-r--r--.  1 root root  2785 3月  20 2019 Makefile -rw-r--r--.  1 root root   341 3月  20 2019 README drwxr-xr-x. 78 root root  4096 5月   9 11:21 src drwxr-xr-x. 14 root root   217 5月   9 11:21 test [root@TrueDei jdk12]#  

进入到解压后的文件夹里

[root@TrueDei jdk12]#  [root@TrueDei jdk12]# cd jdk12-06222165c35f [root@TrueDei jdk12-06222165c35f]#  

五,安装编译的此OpenJDK之前的版本

安装要编译的JDK的上一个版本JDK（因为编译JDK时要有一个编译期可使用的JDK，官方称作这个JDK叫Bootstrap JDK）

安装上一版本JDK，这里安装JDK11

可以使用一下命令来查看一下yum源的仓库里有哪些版本的

可以看到,只有6,7,8,11版本的java

[root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]# yum search java | grep jdk ldapjdk-javadoc.noarch : Javadoc for ldapjdk java-1.6.0-openjdk.x86_64 : OpenJDK Runtime Environment java-1.6.0-openjdk-demo.x86_64 : OpenJDK Demos java-1.6.0-openjdk-devel.x86_64 : OpenJDK Development Environment java-1.6.0-openjdk-javadoc.x86_64 : OpenJDK API Documentation java-1.6.0-openjdk-src.x86_64 : OpenJDK Source Bundle java-1.7.0-openjdk.x86_64 : OpenJDK Runtime Environment java-1.7.0-openjdk-accessibility.x86_64 : OpenJDK accessibility connector java-1.7.0-openjdk-demo.x86_64 : OpenJDK Demos java-1.7.0-openjdk-devel.x86_64 : OpenJDK Development Environment java-1.7.0-openjdk-headless.x86_64 : The OpenJDK runtime environment without java-1.7.0-openjdk-javadoc.noarch : OpenJDK API Documentation java-1.7.0-openjdk-src.x86_64 : OpenJDK Source Bundle java-1.8.0-openjdk.i686 : OpenJDK Runtime Environment 8 java-1.8.0-openjdk.x86_64 : OpenJDK Runtime Environment 8 java-1.8.0-openjdk-accessibility.i686 : OpenJDK accessibility connector java-1.8.0-openjdk-accessibility.x86_64 : OpenJDK accessibility connector java-1.8.0-openjdk-demo.i686 : OpenJDK Demos 8 java-1.8.0-openjdk-demo.x86_64 : OpenJDK Demos 8 java-1.8.0-openjdk-devel.i686 : OpenJDK Development Environment 8 java-1.8.0-openjdk-devel.x86_64 : OpenJDK Development Environment 8 java-1.8.0-openjdk-headless.i686 : OpenJDK Headless Runtime Environment 8 java-1.8.0-openjdk-headless.x86_64 : OpenJDK Headless Runtime Environment 8 java-1.8.0-openjdk-javadoc.noarch : OpenJDK 8 API documentation java-1.8.0-openjdk-javadoc-zip.noarch : OpenJDK 8 API documentation compressed java-1.8.0-openjdk-src.i686 : OpenJDK Source Bundle 8 java-1.8.0-openjdk-src.x86_64 : OpenJDK Source Bundle 8 java-11-openjdk.i686 : OpenJDK Runtime Environment 11 java-11-openjdk.x86_64 : OpenJDK Runtime Environment 11 java-11-openjdk-demo.i686 : OpenJDK Demos 11 java-11-openjdk-demo.x86_64 : OpenJDK Demos 11 java-11-openjdk-devel.i686 : OpenJDK Development Environment 11 java-11-openjdk-devel.x86_64 : OpenJDK Development Environment 11 java-11-openjdk-headless.i686 : OpenJDK Headless Runtime Environment 11 java-11-openjdk-headless.x86_64 : OpenJDK Headless Runtime Environment 11 java-11-openjdk-javadoc.i686 : OpenJDK 11 API documentation java-11-openjdk-javadoc.x86_64 : OpenJDK 11 API documentation java-11-openjdk-javadoc-zip.i686 : OpenJDK 11 API documentation compressed in a java-11-openjdk-javadoc-zip.x86_64 : OpenJDK 11 API documentation compressed in java-11-openjdk-jmods.i686 : JMods for OpenJDK 11 java-11-openjdk-jmods.x86_64 : JMods for OpenJDK 11 java-11-openjdk-src.i686 : OpenJDK Source Bundle 11 java-11-openjdk-src.x86_64 : OpenJDK Source Bundle 11 ldapjdk.noarch : The Mozilla LDAP Java SDK [root@TrueDei jdk12-06222165c35f]#  

我们选择jdk11的安装

[root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]# yum -y install java-11-openjdk-devel 

安装好就会可以查看版本信息

[root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]# java -version openjdk version "11.0.7" 2020-04-14 LTS OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS) OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing) [root@TrueDei jdk12-06222165c35f]#  

六,安装必要的依赖

安装GCC 版本至少4.8以上， 官方推荐版本7.8 或 CLang 3.2 以上

SCL（Software Collections）是为了给RHEL/CentOS 用户提供一种以方便、安全地安装和使用应用程序和运行时环境的多个（而且可能是更新的）版本的方式，同时避免把系统搞乱。与之相对的是第三方源，它们可能会在已安装的包之间引起冲突

[root@TrueDei jdk12-06222165c35f]# yum install -y centos-release-scl [root@TrueDei jdk12-06222165c35f]# yum install -y devtoolset-7 [root@TrueDei jdk12-06222165c35f]# scl enable devtoolset-7 bash 

下载的速度决定于自己的网速

七,编译

你可能会问了:我看其他文章里都是要求的一下子装很多很多的软件的呀,在这里怎么一个也不安装了.

我想教会的你的是如何解决问题,并不是一下子帮你解决好.

这样子才能学到东西

这里就安装额这些,咱们直接编译,边编译,边发现问题,边解决问题:

再来看一下当前的目录

[root@TrueDei jdk12-06222165c35f]# pwd /root/jdk12/jdk12-06222165c35f [root@TrueDei jdk12-06222165c35f]# [root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]# ll 总用量 48 -rw-r--r--.  1 root root  2114 3月  20 2019 ADDITIONAL_LICENSE_INFO -rw-r--r--.  1 root root  1522 3月  20 2019 ASSEMBLY_EXCEPTION drwxr-xr-x.  3 root root   158 5月   9 11:21 bin -rw-r--r--.  1 root root  1649 3月  20 2019 configure drwxr-xr-x.  3 root root    99 5月   9 11:21 doc -rw-r--r--.  1 root root 19274 3月  20 2019 LICENSE drwxr-xr-x. 23 root root  4096 5月   9 11:21 make -rw-r--r--.  1 root root  2785 3月  20 2019 Makefile -rw-r--r--.  1 root root   341 3月  20 2019 README drwxr-xr-x. 78 root root  4096 5月   9 11:21 src drwxr-xr-x. 14 root root   217 5月   9 11:21 test [root@TrueDei jdk12-06222165c35f]#  

编译:

在Linux中以后的路还长,遇到这种问题一定是不可避免的,所以要好好看了,一定要学到.

[root@TrueDei jdk12-06222165c35f]# bash configure  Runnable configure script is not present Generating runnable configure script at /root/jdk12/jdk12-06222165c35f/build/.configure-support/generated-configure.sh  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 'sudo yum install autoconf'. Error: Cannot find autoconf [root@TrueDei jdk12-06222165c35f]#  

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-sp7d0gyr-1590072127453)(/media/truedei/文档/大学/ImapBox/JVM虚拟机/编译jdk.assets/1590066809518.png)]

安装本次缺少的依赖:

[root@TrueDei jdk12-06222165c35f]# yum install -y autoconf 

继续执行:

[root@TrueDei jdk12-06222165c35f]# bash configure  . . . . 忽略....... .. . . checking how to link with libstdc++... static checking for X... no configure: error: Could not find X11 libraries. You might be able to fix this by running 'sudo yum install libXtst-devel libXt-devel libXrender-devel libXrandr-devel libXi-devel'. configure exiting with result code 1 

如上提示需要这些依赖,那么继续安装

[root@TrueDei jdk12-06222165c35f]# yum install libXtst-devel libXt-devel libXrender-devel libXrandr-devel libXi-devel -y 

继续编译

[root@TrueDei jdk12-06222165c35f]# bash configure  . . . . 忽略....... .. . . checking for cups/ppd.h... no configure: error: Could not find cups! You might be able to fix this by running 'sudo yum install cups-devel'.  configure exiting with result code 1 [root@TrueDei jdk12-06222165c35f]#  

如上提示的缺少如下依赖: yum install cups-devel

继续安装上面缺少的依赖

[root@TrueDei jdk12-06222165c35f]# yum install cups-devel -y 

继续编译

[root@TrueDei jdk12-06222165c35f]# bash configure  . . . . 忽略....... .. . . checking for fontconfig/fontconfig.h... no configure: error: Could not find fontconfig! You might be able to fix this by running 'sudo yum install fontconfig-devel'.  configure exiting with result code 1 [root@TrueDei jdk12-06222165c35f]#  

本次缺少: yum install fontconfig-devel

继续安装上面缺少的依赖:

[root@TrueDei jdk12-06222165c35f]# yum install fontconfig-devel -y 

继续编译

[root@TrueDei jdk12-06222165c35f]# bash configure  . . . . 忽略....... .. . . checking for alsa/asoundlib.h... no configure: error: Could not find alsa! You might be able to fix this by running 'sudo yum install alsa-lib-devel'. configure exiting with result code 1 [root@TrueDei jdk12-06222165c35f]#  

Could not find alsa! You might be able to fix this by running 'sudo yum install alsa-lib-devel'.

继续安装:

[root@TrueDei jdk12-06222165c35f]# yum install alsa-lib-devel -y 

继续编译:

[root@TrueDei jdk12-06222165c35f]# bash configure  configure: Configuration created at Sat May  9 12:33:14 EDT 2020. checking for basename... /usr/bin/basename checking for bash... /usr/bin/bash checking for cat... /usr/bin/cat checking for chmod... /usr/bin/chmod checking for cmp... /usr/bin/cmp checking for comm... /usr/bin/comm checking for cp... /usr/bin/cp checking for cut... /usr/bin/cut checking for date... /usr/bin/date checking for gdiff... no checking for diff... /usr/bin/diff checking for dirname... /usr/bin/dirname checking for echo... /usr/bin/echo checking for expr... /usr/bin/expr checking for file... /usr/bin/file checking for find... /usr/bin/find checking for head... /usr/bin/head checking for gunzip... /usr/bin/gunzip checking for pigz... no checking for gzip... /usr/bin/gzip checking for ln... /usr/bin/ln checking for ls... /usr/bin/ls checking for gmkdir... no checking for mkdir... /usr/bin/mkdir checking for mktemp... /usr/bin/mktemp checking for mv... /usr/bin/mv checking for nawk... no checking for gawk... /usr/bin/gawk checking for printf... /usr/bin/printf checking for greadlink... no checking for readlink... /usr/bin/readlink checking for rm... /usr/bin/rm checking for rmdir... /usr/bin/rmdir checking for sh... /usr/bin/sh checking for sort... /usr/bin/sort checking for tail... /usr/bin/tail checking for gtar... /usr/bin/gtar checking for tee... /usr/bin/tee checking for touch... /usr/bin/touch checking for tr... /usr/bin/tr checking for uname... /usr/bin/uname checking for uniq... /usr/bin/uniq checking for wc... /usr/bin/wc checking for which... /usr/bin/which checking for xargs... /usr/bin/xargs checking for gawk... gawk checking for grep that handles long lines and -e... /usr/bin/grep checking for egrep... /usr/bin/grep -E checking for fgrep... /usr/bin/grep -F checking for a sed that does not truncate output... /usr/bin/sed checking for cygpath... no checking for df... /usr/bin/df checking for cpio... /usr/bin/cpio checking for nice... /usr/bin/nice checking for pandoc... no checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking target system type... x86_64-unknown-linux-gnu checking openjdk-build os-cpu... linux-x86_64 checking openjdk-target os-cpu... linux-x86_64 checking compilation type... native checking for top-level directory... /root/jdk12/jdk12-06222165c35f checking if custom source is suppressed (openjdk-only)... no checking which debug level to use... release checking which variants of the JVM to build... server checking for sysroot...  checking for toolchain path...  checking for extra path...  checking where to store configuration... in default location checking what configuration name to use... linux-x86_64-server-release checking for apt-get... no checking for yum... yum checking for gmake... /opt/rh/devtoolset-7/root/usr/bin/gmake configure: Testing potential make at /opt/rh/devtoolset-7/root/usr/bin/gmake, found using gmake in PATH configure: Using GNU make at /opt/rh/devtoolset-7/root/usr/bin/gmake (version: GNU Make 4.2.1) checking if make --output-sync is supported... yes checking for output-sync value... none checking if find supports -delete... yes checking what type of tar was found... gnu checking that grep (/usr/bin/grep) -Fx handles empty lines in the pattern list correctly... yes checking for unzip... /usr/bin/unzip checking for zip... /usr/bin/zip checking for ldd... /usr/bin/ldd checking for greadelf... no checking for readelf... /opt/rh/devtoolset-7/root/usr/bin/readelf checking for dot... no checking for hg... no checking for git... no checking for stat... /usr/bin/stat checking for time... no checking for flock... /usr/bin/flock checking for dtrace... no checking for gpatch... no checking for patch... no checking bash version... 4.2.46 checking if bash supports pipefail... yes checking if bash supports errexit (-e)... yes checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for default LOG value...  checking headless only... no checking for graphviz dot... no, cannot generate full docs checking for pandoc... no, cannot generate full docs checking full docs... no, missing dependencies checking for cacerts file... default checking for jni library path... default checking if packaged modules are kept... yes (default) checking for version string... 12-internal+0-adhoc.root.jdk12-06222165c35f checking for javac... /usr/bin/javac checking for java... /usr/bin/java configure: Found potential Boot JDK using java(c) in PATH checking for Boot JDK... /usr/lib/jvm/java-11-openjdk-11.0.7.10-4.el7_8.x86_64 checking Boot JDK version... openjdk version "11.0.7" 2020-04-14 LTS OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS) OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing)  checking for java in Boot JDK... ok checking for javac in Boot JDK... ok checking for javadoc in Boot JDK... ok checking for jar in Boot JDK... ok checking for jarsigner in Boot JDK... ok checking if Boot JDK is 32 or 64 bits... 64 checking for local Boot JDK Class Data Sharing (CDS)... yes, created checking for Build JDK... yes, will use output dir configure: Using default toolchain gcc (GNU Compiler Collection) checking for gcc... /opt/rh/devtoolset-7/root/usr/bin/gcc checking resolved symbolic links for CC... no symlink configure: Using gcc C compiler version 7.3.1 [gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)] checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables...  checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether /opt/rh/devtoolset-7/root/usr/bin/gcc accepts -g... yes checking for /opt/rh/devtoolset-7/root/usr/bin/gcc option to accept ISO C89... none needed checking for g++... /opt/rh/devtoolset-7/root/usr/bin/g++ checking resolved symbolic links for CXX... no symlink configure: Using gcc C++ compiler version 7.3.1 [g++ (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)] checking whether we are using the GNU C++ compiler... yes checking whether /opt/rh/devtoolset-7/root/usr/bin/g++ accepts -g... yes checking how to run the C preprocessor... /opt/rh/devtoolset-7/root/usr/bin/gcc -E checking how to run the C++ preprocessor... /opt/rh/devtoolset-7/root/usr/bin/g++ -E configure: Using gcc linker version 2.28 [GNU ld version 2.28-11.el7] checking for ar... ar configure: Rewriting AR to "/opt/rh/devtoolset-7/root/usr/bin/ar" checking for strip... strip configure: Rewriting STRIP to "/opt/rh/devtoolset-7/root/usr/bin/strip" checking for nm... nm configure: Rewriting NM to "/opt/rh/devtoolset-7/root/usr/bin/nm" checking for gobjcopy... no checking for objcopy... objcopy configure: Rewriting OBJCOPY to "/opt/rh/devtoolset-7/root/usr/bin/objcopy" checking for gobjdump... no checking for objdump... objdump configure: Rewriting OBJDUMP to "/opt/rh/devtoolset-7/root/usr/bin/objdump" checking for c++filt... c++filt configure: Rewriting CXXFILT to "/opt/rh/devtoolset-7/root/usr/bin/c++filt" checking for jtreg... no checking for jtreg test harness... no, not found checking for jmh (Java Microbenchmark Harness)... no, disabled checking for jib... no checking if @file is supported by gcc... yes checking if the C compiler supports "-m64"... yes checking if the C++ compiler supports "-m64"... yes checking if both compilers support "-m64"... yes checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking stdio.h usability... yes checking stdio.h presence... yes checking for stdio.h... yes checking size of int *... 8 checking for target address size... 64 bits checking whether byte ordering is bigendian... no checking if native warnings are errors... true (default) checking if the C++ compiler supports "-std=gnu++98 -Werror"... yes checking for library containing clock_gettime... none required configure: GCC >= 6 detected; adding -fno-delete-null-pointer-checks and -fno-lifetime-dse configure: GCC >= 6 detected; adding -fno-delete-null-pointer-checks and -fno-lifetime-dse checking if the C compiler supports "-ffp-contract=off"... yes checking if the C++ compiler supports "-ffp-contract=off"... yes checking if both compilers support "-ffp-contract=off"... yes checking what type of native debug symbols to use... external checking for dtrace tool... not found, cannot build dtrace checking sys/sdt.h usability... no checking sys/sdt.h presence... no checking for sys/sdt.h... no checking if dtrace should be built... no, missing dependencies checking if Hotspot gtest unit tests should be built... yes checking if static link of stdc++ is possible... yes checking how to link with libstdc++... static checking for X... libraries , headers  checking for gethostbyname... yes checking for connect... yes checking for remove... yes checking for shmat... yes checking for IceConnectionNumber in -lICE... yes checking for X11/extensions/shape.h... yes checking for X11/extensions/Xrender.h... yes checking for X11/extensions/XTest.h... yes checking for X11/Intrinsic.h... yes checking for X11/extensions/Xrandr.h... yes checking if XlinearGradient is defined in Xrender.h... yes checking cups/cups.h usability... yes checking cups/cups.h presence... yes checking for cups/cups.h... yes checking cups/ppd.h usability... yes checking cups/ppd.h presence... yes checking for cups/ppd.h... yes checking fontconfig/fontconfig.h usability... yes checking fontconfig/fontconfig.h presence... yes checking for fontconfig/fontconfig.h... yes checking for FREETYPE... yes checking for freetype... yes (using pkg-config) Using freetype: system checking for ALSA... yes checking for which libjpeg to use... bundled checking for which giflib to use... bundled checking for PNG... yes checking for which libpng to use... bundled checking for compress in -lz... yes checking for which zlib to use... system checking for system zlib functionality... ok checking for which lcms to use... bundled checking for cos in -lm... yes checking for dlopen in -ldl... yes checking if shenandoah can be built... yes checking if zgc can be built... yes checking if jvmci module jdk.internal.vm.ci should be built... yes checking if graal module jdk.internal.vm.compiler should be built... yes checking if aot should be enabled... yes checking if cds should be enabled... yes checking if elliptic curve crypto implementation is present... yes checking if jtreg failure handler should be built... no, missing jtreg checking if the CDS classlist generation should be enabled... yes checking if any translations should be excluded... no checking if static man pages should be copied... yes checking if a default CDS archive should be generated... yes checking for number of cores... 1 checking for memory size... 991 MB checking for appropriate number of jobs to run in parallel... 1 checking flags for boot jdk java command ...  -Duser.language=en -Duser.country=US  -XX:+UnlockDiagnosticVMOptions -XX:-VerifySharedSpaces -XX:SharedArchiveFile=/root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/configure-support/classes.jsa -Xshare:auto  checking flags for boot jdk java command for big workloads...  -Xms64M -Xmx512M -XX:ThreadStackSize=1536 checking flags for bootcycle boot jdk java command for big workloads... -Xms64M -Xmx512M -XX:ThreadStackSize=1536 checking flags for boot jdk java command for small workloads...  -XX:+UseSerialGC -Xms32M -Xmx512M -XX:TieredStopAtLevel=1 checking whether to use sjavac... no checking whether to use javac server... yes checking If precompiled header is enabled... yes checking that precompiled headers work... yes checking is ccache enabled... no checking if build directory is on local disk... yes checking JVM features for JVM variant 'server'... "aot cds cmsgc compiler1 compiler2 epsilongc g1gc graal jfr jni-check jvmci jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc" configure: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/configure-support/config.status config.status: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/spec.gmk config.status: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/bootcycle-spec.gmk config.status: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/buildjdk-spec.gmk config.status: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/compare.sh config.status: creating /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/Makefile  ==================================================== A new configuration has been successfully created in /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release using default settings.  Configuration summary: * Debug level:    release * HS debug level: product * JVM variants:   server * JVM features:   server: 'aot cds cmsgc compiler1 compiler2 epsilongc g1gc graal jfr jni-check jvmci jvmti management nmt parallelgc serialgc services shenandoahgc vm-structs zgc'  * OpenJDK target: OS: linux, CPU architecture: x86, address length: 64 * Version string: 12-internal+0-adhoc.root.jdk12-06222165c35f (12-internal)  Tools summary: * Boot JDK:       openjdk version "11.0.7" 2020-04-14 LTS OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS) OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing) (at /usr/lib/jvm/java-11-openjdk-11.0.7.10-4.el7_8.x86_64) * Toolchain:      gcc (GNU Compiler Collection) * C Compiler:     Version 7.3.1 (at /opt/rh/devtoolset-7/root/usr/bin/gcc) * C++ Compiler:   Version 7.3.1 (at /opt/rh/devtoolset-7/root/usr/bin/g++)  Build performance summary: * Cores to use:   1 * Memory limit:   991 MB 

一直到不报错为止

八,继续make

开始编译，编译完后，进入到jdk目录下的 ./build/配置名称/jdk 可以看到编译后的文件 (配置名称没有设置的话，会是编译的机器名)

这个时间可能会特别慢,等待吧,可以去刷一道算法题再回来

[root@TrueDei jdk12-06222165c35f]# make images 

make完成之后是下面这个样子

九,测试成果

进入到编译后的jdk目录

[root@TrueDei jdk12-06222165c35f]# pwd /root/jdk12/jdk12-06222165c35f [root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]#  [root@TrueDei jdk12-06222165c35f]# cd build/linux-x86_64-server-release/jdk/bin/ [root@TrueDei bin]#  [root@TrueDei bin]#  [root@TrueDei bin]#  [root@TrueDei bin]# pwd /root/jdk12/jdk12-06222165c35f/build/linux-x86_64-server-release/jdk/bin [root@TrueDei bin]#  [root@TrueDei bin]#  [root@TrueDei bin]# ll java -rwxr-xr-x. 1 root root 12992 5月   9 13:04 java [root@TrueDei bin]#  [root@TrueDei bin]# ./java -version openjdk version "12-internal" 2019-03-19 OpenJDK Runtime Environment (build 12-internal+0-adhoc.root.jdk12-06222165c35f) OpenJDK 64-Bit Server VM (build 12-internal+0-adhoc.root.jdk12-06222165c35f, mixed mode) [root@TrueDei bin]#  [root@TrueDei bin]#  

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水平有限，难免会有疏漏或者书写不合理的地方，欢迎交流讨论。
作者：TrueDei
作者主页：https://truedei.blog.csdn.net/
原文地址：https://truedei.blog.csdn.net/article/details/106269373
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