CentOS6.6 update gcc4.8 tutorial

CentOS6.6 update gcc4.8 tutorial

Recently, if you want to upgrade mesos0.23.0, gcc4.8 + is required for compiling mesos0.23.0. However, gcc of centos 6.6 is only available in version 4.4.7, so you have to manually upgrade it.

Download 4.8.2 source code

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

Download dependencies (gmp-4.3.2, mpfr-2.4.2, mpc-0.8.1)

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

Compile and install dependencies in sequence

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

Compile and install 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

Uninstall old version

yum remove -y gcc gcc-c++updatedb

Link to new version

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

Check version

gcc -v

Done