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What are the most important and known issues and limitations?
- CLion only runs on 64bit systems
- CMakeCache changes should be applied via Reload CMake project button in the tool window.
- CLion supports only GNU toolchain, that means only GCC and Clang compilers on Linux and OS X, and MinGW (or MinGW-W64) and Cygwin x64 toolchains on Windows. Microsoft Visual C++ compiler is supported in the experimental mode since CLion 2017.1.
Note: If you are using Visual Studio for C++ development, try our ReSharper for C++.
CLion supports the following C and C++ standards: C99, C11 partially, C++03, C++11, C++14 (all except constexpr), C++17 (initial support).
List of supported C++ language features can be found in our webhelp.
Performance and memory
- On the large code bases (especially when using Boost) performance and memory issues during indexing and editing are possible.
- Increasing memory may help to resolve performance problems. To check the memory usage, please, switch on the memory indicator in Preferences/Settings | Appearance & Behavior | Appearance | Show memory indicator.
While reporting a performance problem, please, get a thread dump and a CPU snapshot and attach them to the report/ticket in tracker.
To find IDE logs to attach to the problem use this link.
- Some issues are possible when debugging 32-bit projects with 64-bit GDB.
To report debugger problem, please, configure and collect debug logs.