Clang 3.1和C ++ 11支持状态 [英] Clang 3.1 and C++11 support status

问题描述

从clang的C ++ 11支持状态网站， http://clang.llvm.org/cxx_status.html ，它说，初始化列表和Lambda表达式都支持从版本3.1开始。

From clang's C++11 support status website, http://clang.llvm.org/cxx_status.html , it says, "Initializer List" and "Lambda Expression" are all supported starting from version 3.1.

但是，使用LLVM /列表和lambda表达式将产生错误消息。

However, using LLVM/Clang trunk (3.2), compiling against initializer list and lambda expression will yield error messages.

有人知道Clang> 3.1是否支持这些功能？

Does anyone know if Clang >3.1 supports those features?

推荐答案

默认情况下， clang ++ 不会启用C ++ 11的功能 - 你有在编译期间传递额外的旗标。

By default, clang++ will not enable the C++11 features - you have to pass an additional flag during compilation.

clang++ -std=c++11 [input files...]

或

# enables some additional C++11 extensions GCC has
clang++ -std=gnu++11 [input files...] 

此外，您可以使用 libstdc ++ 自己的 libc ++ ，这是C ++标准库的不同实现。 libc ++ 在某些情况下可能比现有的 libstdc ++ 库更好地实现C ++ 11标准。 p>

Additionally, you can switch between using libstdc++ and Clang's own libc++, which are different implementations of the C++ standard library. libc++ in some cases might have a better implementation of the C++11 standard than your existing libstdc++ library.

# uses clang's C++ library in C++98 mode
clang++ -stdlib=libc++ [input] # uses clang's C++ library

# uses clang's C++ library and enables C++11 mode
clang++ -stdlib=libc++ -std=c++11 [input] 

如果您在使用过期版本 libstdc ++ 的环境中使用Clang， （像Mac OSX），但是请注意，这两个C ++库彼此不兼容，所以如果你使用它，你必须重建任何依赖对 libc ++ 。

The latter is important if you're using Clang in an environment with an outdated version of libstdc++ (like Mac OSX), but note that the two C++ libraries are not compatible with each other, so you would have to rebuild any dependencies against libc++ if you were to use that.

这篇关于Clang 3.1和C ++ 11支持状态的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！