Ruby 3.4.3p32 (2025-04-14 revision d0b7e5b6a04bde21ca483d20a1546b28b401c2d4)
extension.h
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1#ifndef RBIMPL_HAS_EXTENSION_H /*-*-C++-*-vi:se ft=cpp:*/
2#define RBIMPL_HAS_EXTENSION_H
24
26#if defined(__has_extension)
27# define RBIMPL_HAS_EXTENSION(_) __has_extension(_)
28#else
29# /* Pre-3.0 clang had __has_feature but not __has_extension. */
30# define RBIMPL_HAS_EXTENSION(_) RBIMPL_HAS_FEATURE(_)
31#endif
32
33#endif /* RBIMPL_HAS_EXTENSION_H */
Defines RBIMPL_HAS_FEATURE.