Enabling C++14 in clang in Visual Studio

Question

I\'ve installed clang 3.7 and I\'m using it with visual studio. When I try to compile:

auto f()
{
return 2;
}

I\'m getting error saying tha

Answer 1

clang-cl doesn't use the same option syntax as traditional clang - it's supposed to mimic Visual Studio's cl command line, not clang's command line.

For instance, from clang-cl's documentation:

CL.EXE COMPATIBILITY OPTIONS:
  /?                     Display available options
  /arch:          Set architecture for code generation
  /C                     Don't discard comments when preprocessing
  /c                     Compile only
  /D      Define macro
  ...

Notice that those options are similar to Microsoft's cl option syntax, not clang's option syntax.

However, they have a little pass-through option to support cases like yours:

OPTIONS:
  ...
  -Xclang          Pass  to the clang compiler
  -mllvm         Additional arguments to forward to LLVM's option processing

And so it would seem that invoking clang-cl -Xclang -std=c++14 would be your best bet.