How Can I Check for C 11 Compiler Support?

Checking for C 11 Support

In C , determining if a compiler supports specific features of C 11 is crucial for ensuring compatibility. Some methods exist to perform this check at compile-time, including:

Using __cplusplus Constant

The __cplusplus constant, defined by the preprocessor, indicates the supported C standard version. For example:

#if __cplusplus <= 199711L
  #error This library needs at least a C++11 compliant compiler
#endif

Using Boost Defines

Boost provides defines (__has_feature(feature_name)) that enable checking for specific C 11 features, such as:

#if __has_feature(cxx_automatic_resource_management)
  // C++11 has automatic resource management
#endif

Example: Checking for Variadic Templates

Suppose you want to use variadic templates, a C 11 feature. You can check for its support using the following code:

#ifndef VARIADIC_TEMPLATES_SUPPORTED

#error "Your compiler doesn't support variadic templates.  :("

#else

template <typename... DatatypeList>
class Tuple
{
    // ...
}

#endif

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