源码编译安装GCC4.8.2，体验C++11新标准 March 20, 2014 / C&C++ / apacal / 2860 CLICK / 0 comment <blockquote> <h2><strong>前言</strong></h2> </blockquote> <p>C++11，先前被称作C++0x，即ISO/IEC 14882:2011，是目前的C++编程语言的正式标准。GCC在语言特性上全面支持C++11，目前最新的稳定版本为gcc4.8.2，本文介绍如何在linux下源码编译安装gcc4.8.2。</p> <blockquote> <h2><strong>正文</strong></h2> </blockquote> <ul> <li> <h3><strong>下载源码和安装。</strong></h3> </li> </ul> <p>源码地址为<a href="http://gcc.skazkaforyou.com/releases/gcc-4.8.2/gcc-4.8.2.tar.bz2">http://gcc.skazkaforyou.com/releases/gcc-4.8.2/gcc-4.8.2.tar.bz2</a></p> <p>下载和解压</p> <pre> wget -c http://gcc.skazkaforyou.com/releases/gcc-4.8.2/gcc-4.8.2.tar.bz2 tar -xjvf ./gcc-4.8.2.tar.bz2 </pre> <ul> <li> <h3><strong>配置和安装。</strong></h3> </li> </ul> <pre> cd gcc-4.8.2/ ./contrib/download_prerequisites #下载GMP, MPFR and MPC 等库，也可以自己去下载 cd .. mkdir gcc-build-4.8.2 #建立编译输出目录 nohup ../gcc-4.8.2/configure --enable-checking=release --enable-languages=c,c++ --disable-multilib nohup make > makeinfo #编译的步骤就已经完成了。慢慢的等待编译完成,编译好慢好慢。 make install #安装</pre> <p>安装完成后使用gcc -v 查看版本</p> <pre> gcc -v </pre> <p>错误1：</p> <pre> configure: error: C++ compiler missing or inoperational make[2]: *** [configure-stage1-libcpp] Error 1 make[2]: Leaving directory `/opt/gcc-4.8.2' make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory `/opt/gcc-4.8.2' make: *** [all] Error 2 </pre> <blockquote> <p>从gcc-4.7.2（2012-09-20 released）版本开始，gcc使用c++作为其实现语言。所以我们需要事先在系统中安装低版本的g++。</p> <p>Ubuntu12.04系统中自带gcc-4.6.3，但不带有g++。可以使用apt-get命令来安装。</p> <p>GCC now uses C++ as its implementation language. This means that to build GCC from sources, you will need a C++ compiler that understands C++ 2003.</p> <p>Migrating GCC to C++ as implementation language:</p> <p>C++ is a standardized, well known, popular language.</p> <p>C++ is nearly a superset of C90 used in GCC.</p> <p>The C subset of C++ is just as efficient as C.</p> <p>C++ supports cleaner code in several significant cases.</p> <p>C++ makes it easier to write and enforce cleaner interfaces.</p> <p>C++ never requires uglier code.</p> <p>C++ is not a panacea but it is an improvement.</p> </blockquote> <pre> apt-get install g++</pre> <blockquote> <h2><strong>结束</strong> </h2> </blockquote> <p>编译安装gcc确实挺满的，特别是对于我这种VPS才512MB的就更慢了，推荐使用apt-get安装，<br /> </p> Continue reading