extension.h

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#ifndef RBIMPL_HAS_EXTENSION_H                       /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_HAS_EXTENSION_H
#include "ruby/internal/has/feature.h"

#if defined(__has_extension)
# define RBIMPL_HAS_EXTENSION(_) __has_extension(_)
#else
# /* Pre-3.0 clang had __has_feature but not __has_extension. */
# define RBIMPL_HAS_EXTENSION(_) RBIMPL_HAS_FEATURE(_)
#endif
 
#endif /* RBIMPL_HAS_EXTENSION_H */