错误:无法识别的命令行选项' -std=c+ 11 ' Ubuntu gcc 4.7

I am trying to compile some c++11 code on ubuntu 12.04. After invoking my makefile I got

我正在尝试在ubuntu 12.04上编译一些c++11代码。在调用我的makefile之后，我得到了

cc1plus: error: unrecognized command line option ‘-std=c++11’

错误:无法识别的命令行选项' -std=c+ 11 '

Ubuntu gcc 4.7. Fine, so I ran

Ubuntu gcc 4.7。很好,所以我跑

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.7

Ran it again, and still the same problem. Great.So then I tried changing the symlink of gcc from gcc4.6 to 4.7. After doing this, it then went and complained about not being able to find g++. So I then ran

再运行一次，仍然是同样的问题。太好了。于是我尝试将gcc的符号链从gcc4.6改为4.7。这样做之后，它就开始抱怨找不到+ g。所以我就跑

sudo apt-get update    
sudo apt-get install build-essential

Still no luck. When I typed g++, I just got

仍然没有运气。当我输入g++时，我刚得到

The program 'g++' can be found in the following packages:
*g++
*pentium_builder
Try: sudo apt-get install <selected package>

可以在下面的包中找到“g++”程序:*g++ *pentium_builder: sudo apt-get install 。

So I then tried

所以我就试着

sudo apt-get install pentium_builder

Now I get

现在我得到

Unable to exec g++.real: No such file or directory

无法执行g + +。真实:没有这样的文件或目录

How I can compile c++11 code?

如何编译c++11代码?

2 个解决方案

#1

Last time I tried, the following worked for me for installing and setting g++ 4.8 as default:

上次我试过了，在安装和设置g+ 4.8为默认值时，如下所示:

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.8
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
sudo apt-get install g++-4.8
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50

It seemed painless, and I was able to choose which gcc/g++ version to use without manually setting up symlinks. I suspect this would work for gcc 4.7 as well.

这看起来很简单，我可以选择使用哪个gcc/g++版本，而无需手动设置符号链接。我怀疑这对gcc 4.7也适用。

#2

Add the following to your Makefile:

向您的Makefile中添加以下内容:

PROJECT_CFLAGS = -std=c++0x

#1