麒麟系统开发笔记（十三）：在国产麒麟系统上编译OSG库、搭建基础开发环境和移植测试Demo
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<p> 在国产麒麟系统上实现C++三维仿真，使用OSG技术，其他基于web的技术也是可以但是交互上鼠标拽托等交互相对差一些，所以这块需要斟酌选择到底是何种技术来取舍。<br> 本篇在厂家指定的麒麟系统上编译OSG。</p>
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<h1>环境</h1>
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<ul>
<li>系统版本：银河麒麟桌面操作系统V10(SP1)（注意：不对外提供）</li>
<li>Gcc版本：gcc (Ubuntu 9.3.0-10kylin2) 9.3.0</li>
<li>Qt版本：qt5.12.8</li>
<li>OSG版本：osg3.4.0</li>
<li>Cmake版本：cmake3.16.3</li>
</ul>
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<h1>安装Qt</h1>
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<p> Qt是基于Qt5.12.8版本的，自行下载linux安装linux版本，参照《[麒麟系统开发笔记（二）：国产麒麟系统搭建Qt开发环境安装Qt5.12]》</p>
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<h1>OSG开发系列博客</h1>
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<p> <br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052609-1846171568.png"></p>
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<h1>说明</h1>
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<p> osgQt和移植osgQt过来都是通过QGLWidget渲染，Qt在5.5及以后推荐使用QOpenGLWidget窗口替代QGLWidget，在应用层最大的区别就是在QGLWidget上放置控件是无法半透明的，而在QOpenGLWidget上放置控件是可以透明的。<br> 当然，使用QOpenGLWidget实现，需要自行研究，之前是研究过一边并且实现了，研究差不多一周才终于实现基础Demo。<br> 具体这部分代码在博文《》<br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052760-1843719782.png"><br> 右下的控件实际上是Qt的控件，这样开发可以节省一些hud控件开发，提高效率。</p>
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<h1>OSG编译</h1>
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<h2>步骤一：准备源码</h2>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052544-1388147510.png"></p>
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<h2>步骤二：安装cmake和cmake-gui</h2>
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<p> 自带了cmake，确认cmake版本：<br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052668-902014935.png"></p>
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<p> 安装cmake-gui</p>
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<pre><code class="prism language-shell"><span class="token function">sudo <span class="token function">make <span class="token function">install cmake-gui
</span></span></span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052583-1752179789.png"></p>
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<p> 运行：</p>
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<pre><code class="prism language-shell">cmake-gui
</code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052711-1345671851.png"></p>
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<h2>步骤三：使用cmake配置目标工程</h2>
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<p> 先解压osg，然后打开cmake的界面：</p>
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<pre><code class="prism language-shell">cmake-gui
</code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052680-68593304.png"></p>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052579-951063177.png"></p>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052615-134960725.png"></p>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052699-634148658.png"></p>
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<p> 是没有找到opengl，笔者这个麒麟版本特殊，无法在线安装，联系厂家更新安装的方式：</p>
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<pre><code class="prism language-shell"><span class="token builtin class-name">cd /etc/apt
<span class="token function">sudo <span class="token function">cp sources.list sources.list.bak
<span class="token function">sudo <span class="token function">vi sources.list
</span></span></span></span></span></code></pre>
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<p> 修改：</p>
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<pre><code class="prism language-shell">deb http://archive.kylinos.cn/kylin/KYLIN-ALL <span class="token number">10.1-hwe main
</span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052674-1392541892.png"></p>
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<pre><code class="prism language-shell"><span class="token function">sudo <span class="token function">apt-get update
<span class="token function">sudo <span class="token function">apt-get <span class="token function">install libgl1-mesa-dev
</span></span></span></span></span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052530-356297383.png"></p>
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<p> 安装完opengl后，在cmake-gui的配置，配置成功：<br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052577-1741531151.png"></p>
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<p> （PS1：那些额外的库，都需要编译然后添加进cmake环境变量，此处先不管，优先编译去osg，能跑，库实在太多）<br> 修改安装路径，避免直接安装到系统）：<br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052721-1684195766.png"></p>
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<h2>步骤四：生成工程</h2>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052674-291919657.png"></p>
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<h2>步骤五：终端编译</h2>
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<p> 打开终端，切换至build目录：</p>
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<pre><code class="prism language-shell"><span class="token builtin class-name">cd /home/yang/work/src/OpenSceneGraph-OpenSceneGraph-3.4.0/build-kylinV10
</span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052554-283597115.png"></p>
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<p> 开始make：</p>
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<pre><code class="prism language-shell"><span class="token function">make <span class="token parameter variable">-j8
</span></span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052589-1194765477.png"></p>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052696-1411659646.png"></p>
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<p> 在来一次make，确认每个线程都过了。</p>
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<h2>步骤六：安装</h2>
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<p> 安装到我们之前设置的路径，这样可以完整的提取头文件和库</p>
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<pre><code class="prism language-shell"><span class="token function">make <span class="token function">install
</span></span></code></pre>
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<p> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052716-1424712101.png"></p>
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<p> 至此编译好了。</p>
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<h1>迁移之前的三维文字查看工具</h1>
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<p> 《[项目实战：Qt+OSG三维2D文字实时效果查看工具](》<br> <img src="https://img2023.cnblogs.com/blog/1971530/202310/1971530-20231020133052572-1075026521.png"><br> （PS：没有显示汉字是因为没有打字体库进去）。</p>
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来源：https://www.cnblogs.com/qq21497936/p/17776862.html
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