diff --git a/GCC基本用法.html b/GCC基本用法.html
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+<body class='typora-export os-windows'><div class='typora-export-content'>
+<div id='write'  class=''><h3 id='用法'><span>用法</span></h3><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="shell"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="shell"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 9.51801px; left: 7.98611px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) &lt;options&gt; &lt;sourcefiles...&gt;</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> main.cpp</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-o</span> main main.cpp</span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-o</span> main main.cpp hello.cpp fun.cpp</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-I</span>../headers <span class="cm-attribute">-o</span> main main.cpp</span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">g<span class="cm-operator">++</span> <span class="cm-attribute">-o</span> main <span class="cm-attribute">-I</span>../headers <span class="cm-attribute">-L</span>../lib <span class="cm-attribute">-lfun1</span> main.cpp hello.cpp</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 161px;"></div><div class="CodeMirror-gutters" style="display: none; height: 161px;"></div></div></div></pre><h3 id='常用选项options'><span>常用选项(options)</span></h3><figure><table><thead><tr><th style='text-align:center;' ><span>选项</span></th><th style='text-align:center;' ><span>作用</span></th></tr></thead><tbody><tr><td style='text-align:center;' ><span>-o </span><span>&lt;</span><span>filename</span><span>&gt;</span></td><td style='text-align:center;' ><span>指定生成文件名</span></td></tr><tr><td style='text-align:center;' ><span>-</span><font face="Consolas"><span>I</span></font><span>&lt;</span><span>dir</span><span>&gt;</span></td><td style='text-align:center;' ><span>指定头文件搜索路径</span></td></tr><tr><td style='text-align:center;' ><span>-L</span><span>&lt;</span><span>dir</span><span>&gt;</span></td><td style='text-align:center;' ><span>指定库搜索路径</span></td></tr><tr><td style='text-align:center;' ><span>-static</span></td><td style='text-align:center;' ><span>静态链接</span></td></tr><tr><td style='text-align:center;' ><span>-E -o</span><span>&lt;</span><span>filename.i</span><span>&gt;</span></td><td style='text-align:center;' ><span>编译过程进行到预处理</span></td></tr><tr><td style='text-align:center;' ><span>-S</span></td><td style='text-align:center;' ><span>编译过程进行到编译</span></td></tr><tr><td style='text-align:center;' ><span>-c</span></td><td style='text-align:center;' ><span>编译过程进行到汇编</span></td></tr><tr><td style='text-align:center;' ><span>-O(0-3)</span></td><td style='text-align:center;' ><span>指定代码优化级别</span></td></tr><tr><td style='text-align:center;' ><span>-Wall</span></td><td style='text-align:center;' ><span>输出警告信息</span></td></tr><tr><td style='text-align:center;' ><span>-fexec-charset=GBK</span></td><td style='text-align:center;' ><span>指定运行时编码</span></td></tr><tr><td style='text-align:center;' ><span>-finput-charset=UTF-8</span></td><td style='text-align:center;' ><span>指定源文件编码</span></td></tr><tr><td style='text-align:center;' ><span>-</span><font face="Consolas"><span>l</span></font><span>&lt;</span><span>libname</span><span>&gt;</span></td><td style='text-align:center;' ><span>指定链接库名</span></td></tr><tr><td style='text-align:center;' >&nbsp;</td><td style='text-align:center;' >&nbsp;</td></tr><tr><td style='text-align:center;' >&nbsp;</td><td style='text-align:center;' >&nbsp;</td></tr></tbody></table></figure><p>&nbsp;</p><h3 id='静态链接库'><span>静态链接库</span></h3><h4 id='命名-1'><span>命名</span></h4><p><span>静态链接库命名采用</span><strong><span>lib</span><span>&lt;</span><span>name</span><span>&gt;</span><span>.a</span></strong><span>的形式，例如libmangle.a，libpng.a</span></p><h4 id='归档静态链接库生成）'><span>归档（静态链接库生成）</span></h4><p><span>先将需要归档到库的源文件编译成.o文件，再用下列命令归档</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="shell"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="shell"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 9.51801px; left: 7.98611px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre>x</pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">ar rcs &lt;libname&gt; &lt;objfilelist...&gt;</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">ar rcs libfun.a fun1.o fun2.o fun3.o <span class="cm-comment"># 将3个.o文件归档到同一库文件当中</span></span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 69px;"></div><div class="CodeMirror-gutters" style="display: none; height: 69px;"></div></div></div></pre><h4 id='使用-1'><span>使用</span></h4><p><span>先将使用到对应静态库的源文件编译为.o文件，再进行链接</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="shell"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="shell"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 9.51801px; left: 7.98611px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) &lt;ofilelist...&gt; <span class="cm-attribute">-L</span>&lt;dir&gt; <span class="cm-attribute">-l</span>&lt;lib&gt;</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> main.o hello.o <span class="cm-attribute">-L</span>../lib <span class="cm-attribute">-lfun1</span> <span class="cm-attribute">-lfun2</span> <span class="cm-attribute">-lfun3</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 或者</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> main.o hello.o ../lib/libfun1.a ../lib/libfun2.a ../lib/libfun3.a</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 115px;"></div><div class="CodeMirror-gutters" style="display: none; height: 115px;"></div></div></div></pre><h3 id='动态链接库'><span>动态链接库</span></h3><h4 id='命名-2'><span>命名</span></h4><p><span>动态链接库命名规则为lib</span><span>&lt;</span><span>name</span><span>&gt;</span><span>.dll (Windows) / lib</span><span>&lt;</span><span>name</span><span>&gt;</span><span>.so (Linux)，例如：libmangle.dll/libmangle.so，libpng.dll/libpng.so</span></p><h3 id='生成'><span>生成</span></h3><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="shell"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="shell"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 9.51801px; left: 7.98611px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre>x</pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 分步进行</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) <span class="cm-attribute">-c</span> <span class="cm-attribute">-fPIC</span> &lt;sourcefilelist ...&gt;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) <span class="cm-attribute">-o</span> &lt;libname&gt; <span class="cm-attribute">-shared</span> &lt;objfilelist ...&gt;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-c</span> <span class="cm-attribute">-fPIC</span> fun1.c fun2.c fun3.c</span></pre></div><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-o</span> libfun.dll <span class="cm-attribute">-shared</span> fun1.o fun2.o fun3.o</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
+</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 一步到位</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) <span class="cm-attribute">-o</span> &lt;libname&gt; <span class="cm-attribute">-fPIC</span> <span class="cm-attribute">-shared</span> &lt;sourcefilelist ...&gt;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> <span class="cm-attribute">-o</span> libfun.dll <span class="cm-attribute">-fPIC</span> &nbsp;<span class="cm-attribute">-shared</span> fun1.c fun2.c fun3.c</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 253px;"></div><div class="CodeMirror-gutters" style="display: none; height: 253px;"></div></div></div></pre><h4 id='使用-2'><span>使用</span></h4><p><span>先将使用到对应静态库的源文件编译为.o文件，再进行链接</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded md-focus" spellcheck="false" lang="shell"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="shell"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 32.554px; left: 54.1341px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre>x</pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span>(g<span class="cm-operator">++</span>) &lt;ofilelist...&gt; <span class="cm-attribute">-L</span>&lt;dir&gt; <span class="cm-attribute">-l</span>&lt;lib&gt;</span></pre></div><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 示例</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> main.o hello.o <span class="cm-attribute">-L</span>../lib <span class="cm-attribute">-lfun1</span> <span class="cm-attribute">-lfun2</span> <span class="cm-attribute">-lfun3</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-comment"># 或者</span></span></pre><div class="" style="position: relative;"><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">gcc</span> main.o hello.o ../lib/libfun1.dll ../lib/libfun2.dll ../lib/libfun3.dll</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 115px;"></div><div class="CodeMirror-gutters" style="display: none; height: 115px;"></div></div></div></pre><p>&nbsp;</p></div></div>
+</body>
+</html>
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diff --git a/Make/make.md b/Make/make.md
index f7b49a9..a4aff2d 100644
--- a/Make/make.md
+++ b/Make/make.md
@@ -1,3 +1,115 @@
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+
+- [学习环境搭建](#%E5%AD%A6%E4%B9%A0%E7%8E%AF%E5%A2%83%E6%90%AD%E5%BB%BA)
+  - [Linux（以Ubuntu为倒）](#linux%E4%BB%A5ubuntu%E4%B8%BA%E5%80%92)
+  - [Windows](#windows)
+  - [学习材料](#%E5%AD%A6%E4%B9%A0%E6%9D%90%E6%96%99)
+- [Makefile基础知识](#makefile%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86)
+  - [make使用流程](#make%E4%BD%BF%E7%94%A8%E6%B5%81%E7%A8%8B)
+  - [最简单的Makefile](#%E6%9C%80%E7%AE%80%E5%8D%95%E7%9A%84makefile)
+  - [Makefile文件的命名与指定](#makefile%E6%96%87%E4%BB%B6%E7%9A%84%E5%91%BD%E5%90%8D%E4%B8%8E%E6%8C%87%E5%AE%9A)
+  - [Makefile文件内容组成](#makefile%E6%96%87%E4%BB%B6%E5%86%85%E5%AE%B9%E7%BB%84%E6%88%90)
+  - [一个稍微复杂的Makefile](#%E4%B8%80%E4%B8%AA%E7%A8%8D%E5%BE%AE%E5%A4%8D%E6%9D%82%E7%9A%84makefile)
+  - [目标](#%E7%9B%AE%E6%A0%87)
+  - [伪目标](#%E4%BC%AA%E7%9B%AE%E6%A0%87)
+  - [依赖](#%E4%BE%9D%E8%B5%96)
+    - [依赖类型](#%E4%BE%9D%E8%B5%96%E7%B1%BB%E5%9E%8B)
+    - [指定依赖搜索路径](#%E6%8C%87%E5%AE%9A%E4%BE%9D%E8%B5%96%E6%90%9C%E7%B4%A2%E8%B7%AF%E5%BE%84)
+  - [更新方法](#%E6%9B%B4%E6%96%B0%E6%96%B9%E6%B3%95)
+    - [关于执行终端](#%E5%85%B3%E4%BA%8E%E6%89%A7%E8%A1%8C%E7%BB%88%E7%AB%AF)
+    - [Shell语句回显问题](#shell%E8%AF%AD%E5%8F%A5%E5%9B%9E%E6%98%BE%E9%97%AE%E9%A2%98)
+    - [错误处理](#%E9%94%99%E8%AF%AF%E5%A4%84%E7%90%86)
+  - [变量应用](#%E5%8F%98%E9%87%8F%E5%BA%94%E7%94%A8)
+    - [变量定义与引用方式](#%E5%8F%98%E9%87%8F%E5%AE%9A%E4%B9%89%E4%B8%8E%E5%BC%95%E7%94%A8%E6%96%B9%E5%BC%8F)
+    - [Makefile读取过程](#makefile%E8%AF%BB%E5%8F%96%E8%BF%87%E7%A8%8B)
+    - [变量赋值](#%E5%8F%98%E9%87%8F%E8%B5%8B%E5%80%BC)
+      - [递归展开赋值（延迟展开）](#%E9%80%92%E5%BD%92%E5%B1%95%E5%BC%80%E8%B5%8B%E5%80%BC%E5%BB%B6%E8%BF%9F%E5%B1%95%E5%BC%80)
+      - [简单赋值(立即展开)](#%E7%AE%80%E5%8D%95%E8%B5%8B%E5%80%BC%E7%AB%8B%E5%8D%B3%E5%B1%95%E5%BC%80)
+      - [条件赋值](#%E6%9D%A1%E4%BB%B6%E8%B5%8B%E5%80%BC)
+      - [追加](#%E8%BF%BD%E5%8A%A0)
+      - [Shell运行赋值](#shell%E8%BF%90%E8%A1%8C%E8%B5%8B%E5%80%BC)
+    - [定义多行变量](#%E5%AE%9A%E4%B9%89%E5%A4%9A%E8%A1%8C%E5%8F%98%E9%87%8F)
+    - [取消变量](#%E5%8F%96%E6%B6%88%E5%8F%98%E9%87%8F)
+    - [环境变量的使用](#%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F%E7%9A%84%E4%BD%BF%E7%94%A8)
+    - [变量替换引用](#%E5%8F%98%E9%87%8F%E6%9B%BF%E6%8D%A2%E5%BC%95%E7%94%A8)
+    - [变量覆盖](#%E5%8F%98%E9%87%8F%E8%A6%86%E7%9B%96)
+    - [自动变量](#%E8%87%AA%E5%8A%A8%E5%8F%98%E9%87%8F)
+    - [绑定目标的变量](#%E7%BB%91%E5%AE%9A%E7%9B%AE%E6%A0%87%E7%9A%84%E5%8F%98%E9%87%8F)
+    - [二次展开](#%E4%BA%8C%E6%AC%A1%E5%B1%95%E5%BC%80)
+- [自动推导与隐式规则](#%E8%87%AA%E5%8A%A8%E6%8E%A8%E5%AF%BC%E4%B8%8E%E9%9A%90%E5%BC%8F%E8%A7%84%E5%88%99)
+  - [一些make预定义的规则](#%E4%B8%80%E4%BA%9Bmake%E9%A2%84%E5%AE%9A%E4%B9%89%E7%9A%84%E8%A7%84%E5%88%99)
+    - [C语言编译](#c%E8%AF%AD%E8%A8%80%E7%BC%96%E8%AF%91)
+    - [C++编译](#c%E7%BC%96%E8%AF%91)
+    - [链接](#%E9%93%BE%E6%8E%A5)
+  - [隐式规则中常用一些变量](#%E9%9A%90%E5%BC%8F%E8%A7%84%E5%88%99%E4%B8%AD%E5%B8%B8%E7%94%A8%E4%B8%80%E4%BA%9B%E5%8F%98%E9%87%8F)
+    - [CC](#cc)
+    - [CXX](#cxx)
+    - [AR](#ar)
+    - [CPP](#cpp)
+    - [RM](#rm)
+    - [CFLAGS](#cflags)
+    - [CXXFLAGS](#cxxflags)
+    - [CPPFLAGS](#cppflags)
+    - [LDFLAGS](#ldflags)
+    - [LDLIBS](#ldlibs)
+- [多目标与多规则](#%E5%A4%9A%E7%9B%AE%E6%A0%87%E4%B8%8E%E5%A4%9A%E8%A7%84%E5%88%99)
+  - [独立多目标](#%E7%8B%AC%E7%AB%8B%E5%A4%9A%E7%9B%AE%E6%A0%87)
+  - [组合多目标](#%E7%BB%84%E5%90%88%E5%A4%9A%E7%9B%AE%E6%A0%87)
+  - [同一目标多条规则](#%E5%90%8C%E4%B8%80%E7%9B%AE%E6%A0%87%E5%A4%9A%E6%9D%A1%E8%A7%84%E5%88%99)
+- [静态模式](#%E9%9D%99%E6%80%81%E6%A8%A1%E5%BC%8F)
+- [条件判断](#%E6%9D%A1%E4%BB%B6%E5%88%A4%E6%96%AD)
+- [文本处理函数](#%E6%96%87%E6%9C%AC%E5%A4%84%E7%90%86%E5%87%BD%E6%95%B0)
+  - [字符替换与分析](#%E5%AD%97%E7%AC%A6%E6%9B%BF%E6%8D%A2%E4%B8%8E%E5%88%86%E6%9E%90)
+    - [**subst**](#subst)
+    - [**strip**](#strip)
+    - [findstring](#findstring)
+    - [filter](#filter)
+    - [filter-out](#filter-out)
+    - [sort](#sort)
+    - [word](#word)
+    - [wordlist](#wordlist)
+    - [words](#words)
+    - [firstword](#firstword)
+    - [lastword](#lastword)
+  - [文件名处理函数](#%E6%96%87%E4%BB%B6%E5%90%8D%E5%A4%84%E7%90%86%E5%87%BD%E6%95%B0)
+    - [dir](#dir)
+    - [notdir](#notdir)
+    - [suffix](#suffix)
+    - [basename](#basename)
+    - [addsuffix](#addsuffix)
+    - [addprefix](#addprefix)
+    - [join](#join)
+    - [wildcard](#wildcard)
+    - [realpath](#realpath)
+    - [abspath](#abspath)
+  - [条件函数](#%E6%9D%A1%E4%BB%B6%E5%87%BD%E6%95%B0)
+    - [if](#if)
+    - [or](#or)
+    - [and](#and)
+    - [intcmp](#intcmp)
+  - [file](#file)
+  - [foreach](#foreach)
+  - [call](#call)
+  - [value](#value)
+  - [](#)
+  - [flavor](#flavor)
+  - [eval](#eval)
+  - [shell](#shell)
+  - [let](#let)
+  - [信息提示函数](#%E4%BF%A1%E6%81%AF%E6%8F%90%E7%A4%BA%E5%87%BD%E6%95%B0)
+    - [error](#error)
+    - [warning](#warning)
+    - [info](#info)
+- [同一项目中有多个Makefile文件](#%E5%90%8C%E4%B8%80%E9%A1%B9%E7%9B%AE%E4%B8%AD%E6%9C%89%E5%A4%9A%E4%B8%AAmakefile%E6%96%87%E4%BB%B6)
+  - [包含其他makefile文件](#%E5%8C%85%E5%90%AB%E5%85%B6%E4%BB%96makefile%E6%96%87%E4%BB%B6)
+    - [应用实例：自动生成依赖](#%E5%BA%94%E7%94%A8%E5%AE%9E%E4%BE%8B%E8%87%AA%E5%8A%A8%E7%94%9F%E6%88%90%E4%BE%9D%E8%B5%96)
+  - [嵌套make](#%E5%B5%8C%E5%A5%97make)
+- [后续学习过程](#%E5%90%8E%E7%BB%AD%E5%AD%A6%E4%B9%A0%E8%BF%87%E7%A8%8B)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
 # 学习环境搭建
 
 ### Linux（以Ubuntu为倒）

选项	作用
-o <filename>	指定生成文件名
-I<dir>	指定头文件搜索路径
-L<dir>	指定库搜索路径
-static	静态链接
-E -o<filename.i>	编译过程进行到预处理
-S	编译过程进行到编译
-c	编译过程进行到汇编
-O(0-3)	指定代码优化级别
-Wall	输出警告信息
-fexec-charset=GBK	指定运行时编码
-finput-charset=UTF-8	指定源文件编码
-l<libname>	指定链接库名