I'm trying to install the latest stable g++ and c++11.  My host did it through yum install and thought that it was the latest, but it's not, and they are now saying that this is beyond their level of support.I've looked all over on how to do this, and I can't make anything work, or I have no idea what the suggested solution is saying.What's the easiest way to install g++ 4.7.2 and c++11 on CentOS 5.9?
How to install g++ 4.7.2 & c++11 on CentOS 5.x?
centos;software installation;c++;g++
From this answer to Install gcc 4.7 on CentOS [6.x], the easiest way to get g++ 4.7, and the required tools and libraries, for CentOS 5.x is via the devtools package:cd /etc/yum.repos.dwget http://people.centos.org/tru/devtools/devtools.repo yum --enablerepo=testing-devtools-6 install devtoolset-1.0Since you're running g++ manually (as opposed to through make), you'll need to update your $PATH variable so your shell will use the new gcc, g++, etc. binaries:export PATH=/opt/centos/devtoolset-1.0/root/usr/bin/:$PATHAt this point, your g++ should be version 4.7.0$ g++ --versiong++ (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)Copyright (C) 2012 Free Software Foundation, Inc.This is free software; see the source for copying conditions.  There is NOwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.Be aware that installing gcc and associated tools and libraries in this manner relies on the repository maintainer to keep their packages up to date.If you're interested in keeping your gcc up to date, you may want to consider building gcc from source.Also, compiling programs with a different version of g++ and libstdc++ than are installed on your system can cause all kinds of Fun, coping with which is beyond the scope of this answer. It may be worth moving to a Linux distribution that has support for what you're doing.