终于有了完整实现C++11的GCC 4.8.1.

给自己的系统升级吧。

下面的步骤可以安装GCC4.8.1, 内容来自：http://askubuntu.com/questions/312620/how-do-i-install-gcc-4-8-1-on-ubuntu-13-04

sudo add-apt-repository ppa:ubuntu-toolchain-r/test

sudo update-alternatives --remove-all gcc

sudo update-alternatives --remove-all g++

sudo apt-get install gcc-4.8

sudo apt-get install g++-4.8

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 20

sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 20

sudo update-alternatives --config gcc

sudo update-alternatives --config g++

sudo apt-get update

sudo apt-get upgrade -y

sudo apt-get dist-upgrade

最后用gcc --version检查一下，果然是4.8.1.

gcc --version

gcc (Ubuntu 4.8.1-2ubuntu1~13.04) 4.8.1

Copyright (C) 2013 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.