Will CLion support C++ 20 Modules eventually?


I like CLion, I like how smooth it is, but I don't like that there is no support for C++ Modules, that's why I have to use Visual Studio 2022 sadly... 

Here's my question: Will CLion have C++ 20 Modules support eventually soon, or is it being worked on right now? Because I would highly like to see SMOTH C++ 20 Modules support on an IDE. 

Thanks for making CLion :D 


Similarly, I could not figure out how to #include <ranges> in CLion MinGW Lavavaj Boost 1.76 and had to back out to Visual Studio. That made me sad. I'd much rather use CLion


Luka Which project model do you use? CMake, for example, still doesn't have support for C++20 modules - https://gitlab.kitware.com/cmake/cmake/-/issues/18355. Feel free to comment or upvote https://youtrack.jetbrains.com/issue/CPP-19267. See https://intellij-support.jetbrains.com/hc/en-us/articles/207241135-How-to-follow-YouTrack-issues-and-receive-notifications if you are not familiar with YouTrack.

Brian Beckman does the compiler you use support the ranges library? The first release to support Ranges in gcc is gcc 10.1 - https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2020.


Here is a project skeleton that works with CMake and CLion https://github.com/xahon/c-modules-with-cmake
The main issue is that CLion is unable to parse definitions. If it could do it, then we should already be able to use c++ modules


IC Which CMake version do you use for that?


I don't remember it was a month ago. How does cmake affect code parsing? I've set appropriate compiler version in toolchain so that should work. AFAIK cmake still doesn't support c++ modules natively and I wrote a workaround function to make it work


IC CLion uses information taken from CMake about which files are included into the projects, what are the header search paths, etc. So this might affect parsing.


I use my own Gradle plugin to compile C++20 modules projects. It also is able to produce compilation database which can be loaded into CLion. The CLion still have a problem with some compiler arguments here, but even after these arguments are removed from JSON and the compilation DB is successfully loaded, it still cannot properly navigate through a project code. Module imports are not recognized. Errors are not recognized (Clang-tidy not working?).


Artyom Lebedev Code highlighting and analyzer warning are coming from Clang. I don't think Clang has the proper support yet.