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Asked: 2026-05-24T21:20:03+00:00

Possible Duplicate: How to determine the version of the C++ standard used by the

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Possible Duplicate:
How to determine the version of the C++ standard used by the compiler?

Is there a way for your program to determine this at compile time? Are there preprocessor macros you can use?

I know that g++ has this nice matrix of c++0x/c++11 feature support. Does this exist for other popular compilers? Are there any standard (de facto or otherwise) ways to use the preprocessor to test for the existence of a given feature?

There is a question about this, but the answers do not seem very complete: How to determine the version of the C++ standard used by the compiler?

I know Boost.Config does this, but how does it do it? It might be nice to know if I don’t want to use Boost for whatever reason.

I’m closing this as a duplicate because someone edited one of the answers in the original question to be much more complete.

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  1. Editorial Team

    Look at the value of __cplusplus

    In C++0x the macro __cplusplus will be set to a value that differs
    from (is greater than) the current 199711L.

    http://predef.sf.net has some values for detecting specific standards.

    The Boost.Config recommendation on the question you linked to is good advice too, and offers a more fine-grained answer. I think it basically codifies a feature matrix and periodically updates it.

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