Edited by lahcen-maghrebi at 2016-8-9 05:59

install the latest version of the gnu compiler 6.1

$ sudo apt-get install gcc-6
$ sudo apt-get install g++-6
$ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
$ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 60 --slave /usr/bin/g++ g++ /usr/bin/g++-5

//Choose the version number in the table and then approved

$ sudo update-alternatives --config gcc