github workflows not supported library print c++

[yusuf601]

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Product Feedback

Discussion Content

Hi guys, I recently built a C++ project that uses a library which is only available in C++23. I created a CI/CD pipeline for the project, but after pushing the CI/CD configuration to the repository, a problem occurred. I initially thought the issue was caused by forgetting to add an executable in the CMake configuration, but the problem still persists even after adding it.

[yassine-krichen]

Hey, I ran into this exact thing before. The error fatal error: print: No such file or directory basically means your CI environment’s compiler doesn’t know about the <print> header, which is only available in C++23. Even if your local machine supports it, GitHub’s runners might be using an older GCC/Clang version by default.

A few ways to fix it:

1. Make sure your workflow installs a compiler that supports C++23 (e.g., GCC 13+ or Clang 16+). On Ubuntu runners, you can add something like:

   - name: Install GCC 13
     run: sudo apt install g++-13

   and then set CXX=g++-13.

2. In your CMakeLists.txt, explicitly set the C++ standard:

   set(CMAKE_CXX_STANDARD 23)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)

3. Double-check the workflow is actually using that compiler when building (sometimes the default g++ is older).

Basically, GitHub Actions just needs a modern enough compiler to support the library, once that’s set, <print> and other C++23 stuff should compile fine.

[yusuf601]

thanks bro,your solution its work