https://blog.orchidflower.cn/tags/Golang/ Recent content in Golang on 执子之手 Hugo -- gohugo.io zh-CN Fri, 18 Dec 2020 00:00:00 +0000 https://blog.orchidflower.cn/2020/12/18/How-to-build-static-binary-with-gocv/ Fri, 18 Dec 2020 00:00:00 +0000 https://blog.orchidflower.cn/2020/12/18/How-to-build-static-binary-with-gocv/ <p>最近做了一个图像增强程序，用到了OpenCV。为了方便发布，我将代码使用<code>Golang</code>+<code>GoCV</code>重写，但是编译的时候发现比较麻烦，特别记录一下，以备后查。 本文对应版本如下：</p> <ul> <li>Ubuntu 18.04.5 LTS</li> <li>Golang 1.15.6</li> <li>OpenCV 4.5.0</li> <li>GoCV 0.2.5</li> </ul> <h1 id="1-golang环境准备">1. Golang环境准备</h1> <h2 id="11-安装golang">1.1 安装Golang</h2> <p>下载对应的包，然后解压，设置<code>PATH</code>路径即可，不多说了。</p> <h2 id="12-设置gopath">1.2 设置GOPATH</h2> <p>使用<code>go get</code>下载的包将下载到<code>$GOPATH</code>目录中。 这里设置成<code>/home/ubuntu/.go</code>。不设置的话将自动设置成<code>~/go</code>目录。</p> <div class="highlight"><pre tabindex="0" style="color:#272822;background-color:#fafafa;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1</span><span><span style="color:#111">cd</span> /home/ubuntu/.go </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2</span><span><span style="color:#111">export</span> <span style="color:#111">GOPATH</span><span style="color:#f92672">=</span>/home/ubuntu/.go </span></span></code></pre></div><h2 id="13-下载gocv源码">1.3 下载GoCV源码</h2> <div class="highlight"><pre tabindex="0" style="color:#272822;background-color:#fafafa;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1</span><span><span style="color:#75715e"># 设置代理翻墙，要不然下载不了</span> </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2</span><span>git config --global http.proxy<span style="color:#f92672">=</span>http://127.0.0.1:12346 </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">3</span><span>git config --global https.proxy<span style="color:#f92672">=</span>http://127.0.0.1:12346 </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">4</span><span><span style="color:#111">export</span> <span style="color:#111">http_proxy</span><span style="color:#f92672">=</span>http://127.0.0.1:12346 </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">5</span><span><span style="color:#111">export</span> <span style="color:#111">https_proxy</span><span style="color:#f92672">=</span>http://127.0.0.1:12346 </span></span><span style="display:flex;"><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">6</span><span>go get -v -u -d gocv.io/x/gocv </span></span></code></pre></div> https://blog.orchidflower.cn/2017/02/15/install-golang-debugger-dlv-on-mac/ Wed, 15 Feb 2017 00:00:00 +0000 https://blog.orchidflower.cn/2017/02/15/install-golang-debugger-dlv-on-mac/ <p>Dlv，也成为Delve，是Go语言的源码调试工具。由<code>derekparker</code>开发，开源与Github。在Mac上配置Go语言开发环境的时候，经常碰到的问题就是Dlv调用总是不成功，无法启动应用，无法调试等等。大部分的问题都与Mac的安全机制有关。Mac上使用codesign对应用进行签名，没有签名的程序会受到一些限制，例如无法作为调试程序。</p> <p>当然如果为了方便，你可以通过Homebrew安装Homebrew编译好的Dlv。下面描述的是如何从源码构建这一工具。Delve作者专门写了一篇文档（请看附录的链接），描述如何对Dlv进行自签名。方法是生成一个自签名的证书，然后从源码编译安装Dlv。</p>