C++17 support in CLion
Hello,
I am trying to use C++17 in CLion but it's not clear what is supported and what is not. This page gives some insight but I feel like it's missing features. For instance I want to use std::byte, but this page doesn't list it. When using Clang 6.0 in CLion's toolchain − which according to this supports std::byte − it won't build ("no member named 'byte' in namespace 'std'"). Moreover, even if it built, I wonder if CLion's language engines would properly recognized std::byte in the editor because those don't seem to be configurable.
So on what CLion's C++17 support depends, and how can we have a better overview of the situation than the page listed above provides?
I am using CLion 2018.2, CMake 3.12 with set(CMAKE_CXX_STANDARD 17), and Clang 6.0 as the C++ compiler on Ubuntu 16.04.
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Hello! I can't reproduce the issue in CLion 2018.2.4 on macOS with Clang 6:
Given the fact that in your case the project can't be build, it looks like the compiler you use doesn't really support std::byte. And therefore CLion doesn't recognize it when you use this compiler in CLion.
Can you build the project outside CLion (using terminal)?
Hello Anna, thanks for your reply.
That was indeed the right thing to do: building outside of CLion wouldn't work either. I realized that despite Clang 6 being installed, it was probably missing libc++ 7 (likely to happen on Ubuntu 16.04 or older). I ended up switching to GCC 7 which can be obtained from a ppa. Using GCC 7 with CLion resolved the problem. More info:
Thanks!
Jean-marie, I'm glad you solved the issue! And thank you for sharing the links.