wget http://ftp.gnu.org/gnu/gcc/gcc-6.1.0/gcc-6.1.0.tar.gz



tar -zvxf gcc-6.1.0.tar.gz --directory=/usr/local/



cd /usr/local/gcc-6.1.0



sudo ./contrib/download_prerequisites



sudo mkdir build



cd build



sudo ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib



sudo make -j4



sudo make install