What is the C++ equivalent for the CRT?

Question

I am new to C++, but I have worked with C before.

A program written in C must be linked with the CRT (in Windows, it is the file libcmt.lib) which contains the C functions (for example: printf()).

But I am wondering, is there such a thing as "C++RT" (as opposed to CRT), I mean where are the C++ functions and classes (for example: std::ofstream) stored.

And I have another question, if I used some C functions (for example: printf()), will my C++ program be linked with both the CRT and the "C++RT", or does the "C++RT" contains the CRT?

Answer 1

This depends on an exact implementation of C++ standard library you are using.

GCC ships with libstdc++ and your program is automatically linked against libstdc++*.so* or libstdc++*.dll* (filename may vary depending on distribution, build options and version used)

Clang/LLVM ships with libc++ and libc++*.so* on Linux and OS X, but uses Visual C++ library on Windows.

Microsoft Visual C++ links against one of the libcp*.lib or mscp*.lib (and associated .dll) depending on configuration (link).

Note that it is often possible to use non-default Standard library implementation. For example Clang can use either libstdc++ or libc++ on Linux. Intel compiler uses Microsoft library on Windows and libstdc++ on Linux. There are (were) also implementations that are not associated with a particular compiler, like STLport.