Question

I am planning to use pure C MPI library in C++ application, I don’t want to add unnecessary bloat by running eg. Boost MPI layer that wraps all stuff in the MPI::<func> classes.

Is there anything I should be aware of?

Answer 1

You should wrap all your includes for C-headers in an extern "C" block in order to avoid problems with the name mangling of C++ compilers.

extern "C" {
    // include C-headers
}

Read more here.