<p><br></p><p class="" style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;margin-left: 25px;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);"><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">开始咯</span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">1.下载源码</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">2.安装编译需要的依赖</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">3.安装 jdk 12</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">4.检查配置</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">5.开始编译</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">6.验证是否成功</span></span></span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;display: block;"><span class="" style="box-sizing: border-box;margin-left: 25px;font-size: inherit;color: inherit;line-height: inherit;">回顾</span></span></p><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">最近因写文章需要查看 JVM 源码，有时代码逻辑不是很清晰，找半天，趁国庆假期，抽空下载了 OpenJDK13 搭建了 JVM <wdautohl-customtag style="font-weight:bold;color:red;font-size:inherit;display:inline;" id="wdautohl_id_1" class="">debug</wdautohl-customtag> 环境，把操作记录写在这篇文章里，让有需要的朋友可以参考，少踩坑。</p><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">我是在 Ubuntu 18.04 下编译的，不是在 Windows，建议不在 Windows 下折腾，会遇到比在 Linux 环境下多得多的问题。如果你电脑也是 Windows，可以像我这样，安装个 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">VMware</strong> 虚拟机软件，在里面装个 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">Ubuntu</strong> 系统，在虚拟机里面玩，这 2 个软件在官网下载就行，当然如果懒得去找也可以<code style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 2px 4px;font-size: inherit;color: rgb(95, 156, 239);line-height: inherit;overflow-wrap: break-word;border-radius: 4px;background: rgb(248, 248, 248);">在我的公众号后台回复: 虚拟机</code> 获取 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">VMware</strong> 软件和 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">Ubuntu 18.04</strong> 镜像。</p><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">安装 Ubuntu 虚拟机就不在这篇文章说了，网上有相关的资料。</p><h2 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.4em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">开始咯</span></h2><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">1.下载源码</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">平时咱用的代码管理工具大多数是 Git，OpenJDK 并不是，而是用 <wdautohl-customtag style="font-weight:bold;color:red;font-size:inherit;display:inline;" id="wdautohl_id_2" class="">Mercurial</wdautohl-customtag> 管理工具，所以我们要安装它。通过下面命令安装。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs cmake" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;">sudo apt-<span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(248, 35, 117);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;">get</span> <span class="hljs-keyword"><span class="hljs-keyword">install</span></span> mercurial<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">安装完代码管理工具后，我们就可以下载 OpenJDK13 的源码了，使用如下命令即可下载。这个过程根据网络状况，需要的时间不一，我下载花了十来分钟。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs groovy" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;"><span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(238, 220, 112);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;">hg</span> clone <span class="hljs-string"><span class="hljs-string">http:</span></span><span class="hljs-comment"><span class="hljs-comment">//hg.openjdk.java.net/jdk/jdk13/</span></span><br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">嗯，我就是这样干等了十来分钟，因为具体的官方操作文档也在里面，没下载下来无法看，网上也找不到相关的 Ubuntu 18 编译 OpenJDK13 的文章，所以不知道具体要安装哪些依赖。<strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">现在你看到这篇文章，可以不用干等着了，接下来步骤 2 和 3 不依赖源代码，可以继续操作。</strong></p><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">2.安装编译需要的依赖</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">这一部分是查看了官方文档，做了总结，官方文档里面是按软件区分的，那样一个命令一个命令敲有点繁琐，就把它整合成一个命令，执行就完了，满足有些朋友想尽快编译完，少些多余的东西。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs cmake" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;">sudo apt-<span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(248, 35, 117);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;">get</span> <span class="hljs-keyword"><span class="hljs-keyword">install</span></span> libfreetype6-dev libcups2-dev libx11-dev libxext-dev libxrender-dev libxrandr-dev libxtst-dev libxt-dev libasound2-dev libffi-dev autoconf gcc clang libfontconfig1-dev<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">想了解这些依赖软件是干嘛用的，可以看看官方文档，文档的位置如下图。</p><figure style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><img class="" data-ratio="0.3167701863354037" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiaZiavarGEZzUlYyJcNxteYTuD9HUicv3Jr8ticqwaFmxvvMdUZS3KqmmkbDyYr10rpX8GerRd59cdGDQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="644" style="box-sizing: border-box; margin-right: auto; margin-left: auto; border- 2px; border-style: solid; border-color: rgb(238, 238, 238); border-radius: 6px; font-size: inherit; color: inherit; line-height: inherit; display: block; 644px !important; height: auto !important; visibility: visible !important;" title="" _width="644px" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009124837803-914157576.png" crossorigin="anonymous" data-fail="0"></figure><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">3.安装 jdk 12</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">这个在文档里面称为 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">Boot JDK</strong>，就是编译时需要上一个版本的 JDK 做为基础，一般是使用 N-1 版本，比如编译 OpenJDK8 就使用 JDK7 作为 Boot JDK，我们这里是编译 OpenJDK13，所以使用的是 JDK12。也是执行下面命令就搞定。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs cs" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;">sudo <span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(248, 35, 117);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-keyword"><span class="hljs-keyword">add</span></span></span>-apt-repository ppa:openjdk-r/ppa<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;">sudo apt-<span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(248, 35, 117);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-keyword"><span class="hljs-keyword">get</span></span></span> update<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;">sudo apt-<span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(248, 35, 117);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-keyword"><span class="hljs-keyword">get</span></span></span> install openjdk<span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(174, 135, 250);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-number"><span class="hljs-number">-12</span></span></span>-jdk<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">安装完可以通过 <code style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 2px 4px;font-size: inherit;color: rgb(95, 156, 239);line-height: inherit;overflow-wrap: break-word;border-radius: 4px;background: rgb(248, 248, 248);">java -version</code> 来验证一下是否成功安装。见到如下结果就妥妥的。</p><figure style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><img class="" data-ratio="0.12693498452012383" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiaZiavarGEZzUlYyJcNxteYTuzZ5TlwP7njt4bdRlpaSPodhDibTDQh4Ojvn1GllTUfOtugUeugjTfcg/640?wx_fmt=jpeg" data-type="jpeg" data-w="646" style="box-sizing: border-box; margin-right: auto; margin-left: auto; border- 2px; border-style: solid; border-color: rgb(238, 238, 238); border-radius: 6px; font-size: inherit; color: inherit; line-height: inherit; display: block; 646px !important; height: auto !important; visibility: visible !important;" title="" _width="646px" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009124857035-570528350.png" crossorigin="anonymous" data-fail="0"></figure><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">执行完上面步骤，那么恭喜你，现在就可以开始编译了。</p><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">4.检查配置</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">我们安装了上面那么多东西，需要来检查一下是不是已经安装完所需要的软件，通过下面命令来检查。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs nginx" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;"><span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(238, 220, 112);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-attribute"><span class="hljs-attribute">bash</span></span></span> configure<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">如果执行过程中有异常，就根据异常和提示信息，安装所缺的软件就行。如果看到下面的结果，那么再一次恭喜你，所有依赖软件都准备好了。</p><figure style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><img class="" data-ratio="0.46075433231396534" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiaZiavarGEZzUlYyJcNxteYTu5OSIlan0eibEqKqoyA5awicSY7yLBH4stiaXLnH1nqduaY0yrDuOBVopg/640?wx_fmt=jpeg" data-type="jpeg" data-w="981" style="box-sizing: border-box; margin-right: auto; margin-left: auto; border- 2px; border-style: solid; border-color: rgb(238, 238, 238); border-radius: 6px; font-size: inherit; color: inherit; line-height: inherit; display: block; 677px !important; height: auto !important; visibility: visible !important;" title="" _width="677px" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009124917705-1169133672.png" crossorigin="anonymous" data-fail="0"></figure><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">5.开始编译</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">最激动人心的时刻到来了，敲入下面的命令，开始编译吧。这个过程大概需要半个小时，耐心等候，可以稍作休息，喝杯 82 年的咖啡。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs go" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;"><span class="" style="box-sizing: border-box;font-size: inherit;color: rgb(238, 220, 112);line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-built_in"><span class="hljs-built_in">make</span></span></span> images<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">见证奇迹的图片。看到下图说明编译成功啦。</p><figure style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><img class="" data-ratio="0.6594488188976378" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiaZiavarGEZzUlYyJcNxteYTuyjXaICd32fYZD79NTjtKKVHBZkXb5nmGAVMDfC8VusnxSc3QOt0oZA/640?wx_fmt=jpeg" data-type="jpeg" data-w="1016" style="box-sizing: border-box; margin-right: auto; margin-left: auto; border- 2px; border-style: solid; border-color: rgb(238, 238, 238); border-radius: 6px; font-size: inherit; color: inherit; line-height: inherit; display: block; 677px !important; height: auto !important; visibility: visible !important;" title="" _width="677px" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009124934477-546758210.png" crossorigin="anonymous" data-fail="0"></figure><h3 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.3em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">6.验证是否成功</span></h3><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">还需要再稳一点，验证编译后的 java 是否可用，通过下面的命令来验证。</p><pre style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;letter-spacing: 1px;text-align: start;word-spacing: 2px;background-color: rgb(255, 255, 255);"><code class="hljs groovy" style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 0.5em;font-size: 14px;color: rgb(169, 183, 198);line-height: 17px;border-radius: 0px;background: rgb(40, 43, 46);display: block;font-family: Consolas, Inconsolata, Courier, monospace;overflow-x: auto;word-spacing: 0px;letter-spacing: 0px;overflow-wrap: normal !important;word-break: normal !important;overflow-y: auto !important;">.<span class="hljs-regexp"><span class="hljs-regexp">/build/</span></span>*<span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-regexp"><span class="hljs-regexp">/images/</span></span>jdk</span><span class="" style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"><span class="hljs-regexp"><span class="hljs-regexp">/bin/</span></span>java</span> -version<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;overflow-wrap: inherit !important;word-break: inherit !important;"></code></pre><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">看下图，出现 <code style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 2px 4px;font-size: inherit;color: rgb(95, 156, 239);line-height: inherit;overflow-wrap: break-word;border-radius: 4px;background: rgb(248, 248, 248);">"13-internal" 2019-09-17</code> 字样，我们编译出来的 JDK13 可以用啦。<br style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;"></p><figure style="box-sizing: border-box;color: rgb(62, 62, 62);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><img class="" data-ratio="0.08705612829324169" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiaZiavarGEZzUlYyJcNxteYTuCCWbHjVqxnM7w1LP1ljK4hwCIrwEiaLb7cNz4QlL7S18McTtoATyAWw/640?wx_fmt=jpeg" data-type="jpeg" data-w="873" style="box-sizing: border-box; margin-right: auto; margin-left: auto; border- 2px; border-style: solid; border-color: rgb(238, 238, 238); border-radius: 6px; font-size: inherit; color: inherit; line-height: inherit; display: block; 677px !important; height: auto !important; visibility: visible !important;" title="" _width="677px" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009125003000-2132792319.png" crossorigin="anonymous" data-fail="0"></figure><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">这标题起得不过分吧，上面版本日期是 <strong style="box-sizing: border-box;color: inherit;font-size: inherit;line-height: inherit;">2019-09-17</strong>，还不到一个月，网上相关资料也没，就只有官方文档了（当然也是最好的资料）。<code style="box-sizing: border-box;margin-right: 2px;margin-left: 2px;padding: 2px 4px;font-size: inherit;color: rgb(95, 156, 239);line-height: inherit;overflow-wrap: break-word;border-radius: 4px;background: rgb(248, 248, 248);">跟着步骤走，不会丢</code>，为了验证这句话，还把上面的步骤在我快退休的笔记本上跑了一遍，妥妥的。</p><h2 style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;font-weight: bold;font-size: 1.4em;color: rgb(67, 144, 87);line-height: inherit;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 1px;text-align: start;white-space: normal;word-spacing: 2px;background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box;font-size: inherit;color: inherit;line-height: inherit;">回顾</span></h2><p style="box-sizing: border-box;margin-top: 1.5em;margin-bottom: 1.5em;color: rgb(62, 62, 62);line-height: 2;word-spacing: 2px;letter-spacing: 1px;font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;text-align: start;white-space: normal;background-color: rgb(255, 255, 255);">我们这篇文章就讲了编译 OpenJDK13，接下来会再写一篇怎么搭建 <wdautohl-customtag style="font-weight:bold;color:red;font-size:inherit;display:inline;" id="wdautohl_id_3" class="">Debug</wdautohl-customtag> JVM 环境，可以关注公众号，期待下一篇。</p><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="max- 100%;display: inline-block;line-height: 0; 100%;box-sizing: border-box;"><img class="" data-ratio="0.0859375" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/fd61V9Z6XiabyxiclWmq8lj2VKKwvVRpZLAFgdMnicRH6tGBictNtacfznmJ99hTDGx85wNfcibwzGQKFBs7Q8UibASA/640?wx_fmt=jpeg" data-type="jpeg" data-w="640" style="vertical-align: middle; box-sizing: border-box; 100% !important; height: auto !important; visibility: visible !important;" _width="100%" src="https://img2018.cnblogs.com/blog/1112483/201910/1112483-20191009125026598-1121579836.png" crossorigin="anonymous" data-fail="0"></section></section><section style="line-height: 2;padding-right: 5px;padding-left: 5px;box-sizing: border-box;" powered-by="xiumi.us"></section>
原文地址：https://mp.weixin.qq.com/s/5gO0YJZB7huG9cOByH5Qow </div>同源策略
JavaScript中数组的排序——sort()
箭头函数
bind()，call()，apply()
异步操作
slice()， splice()，split()，indexOf()，join()，replace()
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03-Linux命令基础-第03天（makefile、静态库、动态库、gdb调试工具）
02-Linux命令基础-第02天（压缩包管理、服务器搭建与使用、vim）