Ubuntu 13.04 安装 GCC4.8.1

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.