如何编译#include< experimental/any>用于OSX上的clang [英] How to compile #include <experimental/any> for clang on OSX

问题描述

我正在尝试让#include <experimental/any>在我的C ++程序中使用clang OSX

I am trying to get the #include <experimental/any> to compile in my C++ program on clang OSX

// test.cpp
#include <experimental/any>

int main() {
  return 0;
}

尝试从此处中了解到的以下命令/选项

Tried following commands/options as learnt from here

clang++ -std=c++14 test.cpp -o test -std=c++1z -stdlib=libc++
clang++ -std=c++1x test.cpp -o test -std=c++1z -stdlib=libc++
clang++ -std=c++1y test.cpp -o test -std=c++1z -stdlib=libc++
clang++ -std=c++1z test.cpp -o test -std=c++1z -stdlib=libc++

但是它不能编译&抱怨以下错误:

fatal error: 'experimental/any' file not found

clang++ --version产生以下内容:

Apple LLVM version 8.1.0 (clang-802.0.42)
Target: x86_64-apple-darwin16.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

如何获取#include <experimental/any>进行编译?

How can I get #include <experimental/any> to compile?

我应该在机器上升级clang吗?

截至目前，clang当前是否支持C ++ 17?如果是，如何获得支持?

推荐答案

对于OSX 10.12.5(使用Xcode Developer工具)，我们得到

For OSX 10.12.5 (using Xcode Developer tools), we get

> clang++ -v
Apple LLVM version 8.1.0 (clang-802.0.42)
Target: x86_64-apple-darwin16.6.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

/Library/Developer/CommandLineTools/usr/include/c++/v1/experimental中没有any，只有

chrono
optional    
string_view 
tuple
utility
algorithm
dynarray    
ratio   
system_error    
type_traits

因此，似乎Apple的libc ++不提供any(在/Library/Developer/CommandLineTools/usr/include/c++/v1/中也没有any).您必须使用GCC或您自己的clang或 boost/any.hpp ，您可以通过自制软件进行安装.

So, it appears that Apple's libc++ does not provide any (there is no any in /Library/Developer/CommandLineTools/usr/include/c++/v1/ either). You must either use GCC or your own clang or boost/any.hpp, all of which you can install via homebrew.

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