Building code with std::print fails on Windows

Problem

Building a C++23 project using std::print in CLion on Windows with the MinGW GCC toolchain fails with linker errors similar to the following:

undefined reference to `std::__open_terminal(_iobuf*)'
undefined reference to `std::__write_to_terminal(void*, std::span<char, 18446744073709551615ull>)'
collect2.exe: error: ld returned 1 exit status

Cause

GCC 14 and later require linking against the stdc++exp experimental library when using C++23 features such as std::print or std::println on Windows. By default, this library is not linked, leading to undefined references during the build.

Resolution

Link the stdc++exp experimental library to your executable.

For example, in a CMake project:

1. Add target_link_libraries(<target name> stdc++exp) after add_executable(<target name> main.cpp) in the CMakeLists.txt file.
2. In CLion, execute Tools | CMake | Reset Cache and Reload Project.
3. Rebuild the project. The build should complete successfully.

Refer to the GCC documentation for more details: The GNU C++ Library Manual: Command Options.