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<meta http-equiv="Content-Type" content=
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<title>
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5.9. Binutils-2.25 - 第2遍
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<body class="lfs" id="lfs-7.7-systemd">
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<div class="navheader">
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<h4>
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Linux From Scratch - Version 7.7-systemd
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</h4>
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<h3>
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第五章 构建临时系统
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</h3>
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<ul>
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<li class="prev">
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<a accesskey="p" href="gcc-libstdc++.html" title=
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"Libstdc++-4.9.2">上一页</a>
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Libstdc++-4.9.2
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<a accesskey="n" href="gcc-pass2.html" title=
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"GCC-4.9.2 - 第2遍">下一页</a>
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<p>
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GCC-4.9.2 - 第2遍
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</li>
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<li class="up">
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<a accesskey="u" href="chapter05.html" title=
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"第五章 构建临时系统">返回</a>
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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</div>
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<div class="wrap" lang="en" xml:lang="en">
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<h1 class="sect1">
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<a id="ch-tools-binutils-pass2" name=
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"ch-tools-binutils-pass2"></a>5.9. Binutils-2.25 - 第2遍
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</h1>
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<div class="package" lang="en" xml:lang="en">
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<p>
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Binutils 软件包包括一个链接器，汇编器和其它处理目标文件的工具。
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</p>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">大概编译时间:</strong>
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<span class="segbody">1.0 SBU</span>
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</div>
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<div class="seg">
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<strong class="segtitle">所需磁盘空间:</strong>
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<span class="segbody">574 MB</span>
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</div>
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</div>
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</div>
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</div>
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<div class="installation" lang="en" xml:lang="en">
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<h2 class="sect2">
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5.9.1. 安装 Binutils
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</h2>
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<p>
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再次新建一个单独的编译文件夹：
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</p>
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<pre class="userinput">
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<kbd class="command">mkdir -v ../binutils-build
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cd ../binutils-build</kbd>
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</pre>
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<p>
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准备编译 Binutils:
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</p>
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<pre class="userinput">
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<kbd class="command">CC=$LFS_TGT-gcc \
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AR=$LFS_TGT-ar \
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RANLIB=$LFS_TGT-ranlib \
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../binutils-2.25/configure \
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--prefix=/tools \
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--disable-nls \
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--disable-werror \
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--with-lib-path=/tools/lib \
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--with-sysroot</kbd>
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</pre>
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<div class="variablelist">
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<p class="title">
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<strong>新配置选项的含义:</strong>
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</p>
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<dl class="variablelist">
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<dt>
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<span class="term"><em class="parameter"><code>CC=$LFS_TGT-gcc
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AR=$LFS_TGT-ar RANLIB=$LFS_TGT-ranlib</code></em></span>
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</dt>
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<dd>
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<p>
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因为这是真正的原生编译 Binutils，设置这些变量能确保编译系统使用交叉编译器和相关的工具，而不是宿主系统中已有的。
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</p>
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</dd>
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<dt>
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<span class="term"><em class=
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"parameter"><code>--with-lib-path=/tools/lib</code></em></span>
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</dt>
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<dd>
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<p>
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这告诉配置脚本在编译 Binutils 的时候指定库搜索目录，结果是 <code class="filename">/tools/lib</code> 被
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传递到链接器。这可以防止链接器搜索系统的库目录。
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</p>
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</dd>
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<dt>
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<span class="term"><em class=
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"parameter"><code>--with-sysroot</code></em></span>
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</dt>
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<dd>
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<p>
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sysroot 功能使链接器可以找到包括在其命令行中的其它共享对象明确需要的共享对象。
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否则的话，在某些主机上一些软件包可能会编译不成功。
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</p>
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</dd>
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</dl>
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</div>
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<p>
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编译软件包:
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</p>
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<pre class="userinput">
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<kbd class="command">make</kbd>
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</pre>
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<p>
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安装软件包:
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</p>
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<pre class="userinput">
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<kbd class="command">make install</kbd>
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</pre>
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<p>
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现在，为下一章的<span class=
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"quote">“<span class=
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"quote">再调整</span>”</span>阶段逐步链接器：
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</p>
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<pre class="userinput">
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<kbd class="command">make -C ld clean
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make -C ld LIB_PATH=/usr/lib:/lib
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cp -v ld/ld-new /tools/bin</kbd>
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</pre>
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<div class="variablelist">
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<p class="title">
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<strong>make 参数的含义:</strong>
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</p>
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<dl class="variablelist">
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<dt>
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<span class="term"><em class="parameter"><code>-C ld
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clean</code></em></span>
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</dt>
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<dd>
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<p>
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告诉 make 程序移除所有 <code class="filename">ld</code> 子目录中编译过的文件。
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</p>
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</dd>
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<dt>
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<span class="term"><em class="parameter"><code>-C ld
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LIB_PATH=/usr/lib:/lib</code></em></span>
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</dt>
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<dd>
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<p>
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这个选项重新编译<code class=
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"filename">ld</code>子目录中的所有文件。在命令行中指定 Makefile 的<code class="envar">LIB_PATH</code>
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变量可以使我们能够重写临时工具的默认值并指向正确的最终路径。该变量的值指定链接器的默认库搜索路径。
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下一章中会用到这个准备。
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</p>
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</dd>
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</dl>
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</div>
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</div>
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<div class="content" lang="en" xml:lang="en">
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<p>
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该软件包的详细信息在<a class="xref" href=
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"../chapter06/binutils.html#contents-binutils" title=
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"6.13.2. Binutils 的内容">6.13.2,
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“Binutils 的内容”</a>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<div class="book">
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<div class="titlepage">
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<div class="author">
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<span class="firstname">翻译团队：<a href="http://lctt.github.io/" target="_blank">LCTT</a></span>
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<span class="surname">译者/校对：<a href="http://github.com/ictlyh" target="_blank">ictlyh</a>,</span>
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</div>
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</div>
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</div>
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<ul>
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<li class="prev">
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<a accesskey="p" href="gcc-libstdc++.html" title=
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"Libstdc++-4.9.2">上一页</a>
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<p>
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Libstdc++-4.9.2
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</p>
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</li>
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<li class="next">
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<a accesskey="n" href="gcc-pass2.html" title=
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"GCC-4.9.2 - 第2遍">下一页</a>
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<p>
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GCC-4.9.2 - 第2遍
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter05.html" title=
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"第五章 构建临时系统">返回</a>
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</li>
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<li class="home">
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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</div>
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</body>
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</html>
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