Is the GNU compiler that comes with Ubuntu 12.04 not compliant with C++ 11?
c++11, g++, ubuntu-12.04
Solution
GCC versions prior to 4.7 use "-std=c++0x" instead of "-std=c++11" since the standard wasn't definitely C++11 at the time those versions were released. There are C++11 features present in later GCC versions that will not be implemented on older versions. GCC 4.8.1 is the first release that is truly C++11 feature-complete.
I imagine you can update the compiler packages to something recent while keeping the majority of your Ubuntu install at 12.04.
Problem
Been having some problems with the Ubuntu 13.04 updates so I took down my Ubuntu 13.04 system and installed 12.04 LTS and the gnome shell, which is the look and feel I prefer. I use Ubuntu mostly for C++ development and use C++ 11. My preferred IDE is CodeLite http://www.codelite.org/. I installed CodeLite and added the C++ 11 compiler switches for the GNU g++ C++ compiler: -std=c++11, as I did previously. (I have many projects that use C++ 11 and I can compile and build them fine on 13.04.) But I can't compile a project using the compiler switch on 12.04. I get a an error message: cc1plus: error: unrecognized command line option ‘-std=c++11’. Without the C++ 11, I can build and run a C++ project without problems. Is the GNU compiler that comes with Ubuntu 12.04 not compliant with C++ 11? How do I fix this? I looked in Synaptic and didn't find any upgrades available. I have never tried it before on 12.04, but C++ 11 switch was working fine on 12.10. Am I stuck? How can I fix this so I can stay on 12.04 and use C++ 11?