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<p><span style="font-size:14px">背景知识：我不是root权限，因此安装包比较痛苦，因此安装时都将包指定到某个目录。</span></p>
<p><span style="font-size:14px">目标：我想安装gfortran，因为BLAS需要它编译，安装gfortran不想通过编译源文件方法，就</span></p>
<p><span style="font-size:14px">1：直接下载二进制文件（https://gcc.gnu.org/wiki/GFortranBinaries）</span></p>
<p><span style="font-size:14px">2：解压后，按道理说可以直接用，因为是二进制文件。</span></p>
<p><span style="font-size:14px">3：:配置环境变量，我的是：</span></p>
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<p><span style="font-size:14px">if [ -z "$LD_LIBRARY_PATH" ];</span></p>
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<p><span style="font-size:14px"> then</span></p>
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<p><span style="font-size:14px"> LD_LIBRARY_PATH="/home/wuxupeng/gcc-infrastructure/gcc-4.3/lib64"</span></p>
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<p><span style="font-size:14px">else</span></p>
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<p><span style="font-size:14px"> LD_LIBRARY_PATH="/home/wuxupeng/gcc-infrastructure/gcc-4.3/lib64:$LD_LIBRARY_PATH"</span></p>
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<p><span style="font-size:14px">fi</span></p>
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<p><span style="font-size:14px">export PATH=/home/wuxupeng/gcc-infrastructure/gcc-4.3/bin:$PATH</span></p>
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<p><span style="font-size:14px">export LD_LIBRARY_PATH</span></p>
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<p><span style="font-size:14px">果然可以用，<strong>但是编译BLAS时出现什么什么.SO文件找不到</strong>。</span></p>
<p><span style="font-size:14px">4：既然找不到，我就网上搜这些包，可是找不到，无奈矛头指向GCC编译器，我就想安装版本高的GCC。</span></p>
<p><span style="font-size:14px">5：安装GCC需要需要依赖一些包：</span></p>
<p><span style="font-size:14px">#############################################################################################</span></p>
<p><span style="font-size:14px"></span></p>
<div class="article_title" style="margin:5px 0px; line-height:30px; font-family:'Microsoft YaHei'">
<span style="font-size:20px"> </span>
<h1 style="margin:0px; padding:0px; display:inline; font-weight:normal; vertical-align:middle"> <span class="link_title"><span style="font-size:14px"><a href="http://blog.csdn.net/e_wsq/article/details/25568867" rel="noopener noreferrer" style="color:rgb(0,0,0); text-decoration:none" target="_blank">GCC 4.8.2 编译安装小记</a>（参考http://blog.csdn.net/e_wsq/article/details/25568867）</span></span></h1>
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<p></p>
<p><span style="font-size:14px"></span></p>
<div class="article_title" style="margin:5px 0px; font-size:20px; line-height:30px; font-family:'Microsoft YaHei'">
<span style="color:rgb(51,51,51); font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:13px; letter-spacing:0.5px; line-height:22.5px; text-align:right">以前从没有升级过GCC，一直用系统默认的GCC版本，最近在研究好久没有用过的 C， 便有了升级GCC的想发，大致如下。</span>
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<p></p>
<p><span style="font-size:14px"></span></p>
<div class="article_content" id="article_content" style="margin:20px 0px 0px; line-height:26px; font-family:Arial; color:rgb(51,51,51)">
<p style="font-size:13px; padding-top:0px; padding-bottom:0px; margin-top:8px; margin-bottom:8px; line-height:22.5px; letter-spacing:0.5px; font-family:微软雅黑,Verdana,sans-serif,宋体"> 环境： <span style="padding:0px; margin:0px; color:rgb(0,153,0)">CentOS-6.5-i386 , gcc-4.4</span><span style="padding:0px; margin:0px; color:rgb(0,153,0)">.7 系统必须已经安装有一个编译器，因为 gcc 也是需要编译的</span></p>
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<p></p>
<p><span style="font-size:14px"></span></p>
<div class="article_content" id="article_content" style="margin:20px 0px 0px; line-height:26px; font-family:Arial; color:rgb(51,51,51)">
<p style="font-size:13px; padding-top:0px; padding-bottom:0px; margin-top:8px; margin-bottom:8px; line-height:22.5px; letter-spacing:0.5px; font-family:微软雅黑,Verdana,sans-serif,宋体"> 首先 gcc 编译需要三个额外库，下载并按照下面的顺序安装它们，如下:</p>
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<p></p>
<p><span style="font-size:14px"></span></p>
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