centOS6.6升级gcc4.8

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最近想升级mesos0.23.0,结果编译mesos0.23.0需要gcc4.8+，可是centOS6.6最高版本的gcc也只到4.4.7版本,只好手动升级一下了。

下载4.8.2源码

wget ftp://gcc.gnu.org/pub/gcc/releases/gcc-4.8.2/gcc-4.8.2.tar.bz2

下载依赖(gmp-4.3.2、mpfr-2.4.2、mpc-0.8.1)

/usr/install/gcc-4.8.2/contrib/download_prerequisities

依次编译安装依赖

cd /usr/install/gcc-4.8.2/contrib/gmpmkdir buildcd build../configure --prefix=/usr/local/gcc/gmp-4.3.2sudo makesudo make installcd /usr/install/gcc-4.8.2/contrib/mpfrmkdir buildcd build../configure --prefix=/usr/local/gcc/mpfr-2.4.2 --with-gmp=/usr/local/gcc/gmp-4.3.2  sudo makesudo make installcd /usr/install/gcc-4.8.2/contrib/mpcmkdir buildcd build../configure --prefix=/usr/local/gcc/mpc-0.8.1 --with-mpfr=/usr/local/gcc/mpfr-2.4.2 --with-gmp=/usr/local/gcc/gmp-4.3.2  sudo makesudo make install

编译安装gcc4.8.2

cd /usr/install/gcc-4.8.2mkdir build../configure --prefix=/usr/local/gcc --enable-threads=posix --disable-checking --enable-languages=c,c++ --disable-multilib --with-gmp=/usr/local/gcc/gmp-4.3.2 --with-mpfr=/usr/local/gcc/mpfr-2.4.2 --with-mpc=/usr/local/gcc/mpc-0.8.1sudo makesudo make install

卸载旧版本

yum remove -y gcc gcc-c++updatedb

链接新版本

cd /usr/bin  ln -s /usr/local/gcc/bin/gcc gcc  ln -s /usr/local/gcc/bin/g++ g++

检查版本

gcc -v

done

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