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#ifndef RBIMPL_CONFIG_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_CONFIG_H
/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Thin wrapper to ruby/config.h
*/
#include "ruby/config.h"
#ifdef RUBY_EXTCONF_H
# include RUBY_EXTCONF_H
#endif
#include "ruby/impl/compiler_since.h"
#if defined(__cplusplus)
#/* __builtin_choose_expr and __builtin_types_compatible aren't available
# * on C++. See https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html */
# undef HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P
# undef HAVE_BUILTIN___BUILTIN_TYPES_COMPATIBLE_P
# undef HAVE_PROTOTYPES
# define HAVE_PROTOTYPES 1
# undef HAVE_STDARG_PROTOTYPES
# define HAVE_STDARG_PROTOTYPES 1
/* HAVE_VA_ARGS_MACRO is for C. C++ situations might be different. */
# undef HAVE_VA_ARGS_MACRO
# if __cplusplus >= 201103L
# define HAVE_VA_ARGS_MACRO
# elif defined(__GXX_EXPERIMENTAL_CXX0X__) && __GXX_EXPERIMENTAL_CXX0X__
# define HAVE_VA_ARGS_MACRO
# elif defined(__INTEL_CXX11_MODE__)
# define HAVE_VA_ARGS_MACRO
# elif RBIMPL_COMPILER_SINCE(MSVC, 16, 0, 0)
# define HAVE_VA_ARGS_MACRO
# else
# /* NG, not known. */
# endif
#endif
#if RBIMPL_COMPILER_BEFORE(GCC, 4, 9, 0)
# /* See https://bugs.ruby-lang.org/issues/14221 */
# undef HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P
#endif
#if RBIMPL_COMPILER_BEFORE(GCC, 5, 0, 0)
# /* GCC 4.9.2 reportedly has this feature and is broken. The function is not
# * officially documented below. Seems we should not use it.
# * https://gcc.gnu.org/onlinedocs/gcc-4.9.4/gcc/Other-Builtins.html */
# undef HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
#endif
#ifndef STRINGIZE0
# define STRINGIZE(expr) STRINGIZE0(expr)
# define STRINGIZE0(expr) #expr
#endif
#ifdef AC_APPLE_UNIVERSAL_BUILD
# undef WORDS_BIGENDIAN
# ifdef __BIG_ENDIAN__
# define WORDS_BIGENDIAN
# endif
#endif
#ifndef DLEXT_MAXLEN
# define DLEXT_MAXLEN 4
#endif
#ifndef RUBY_PLATFORM
# define RUBY_PLATFORM "unknown-unknown"
#endif
#ifdef UNALIGNED_WORD_ACCESS
# /* Take that. */
#elif defined(__i386)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(__i386__)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(_M_IX86)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(__x86_64)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(__x86_64__)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(_M_AMD64)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(__powerpc64__)
# define UNALIGNED_WORD_ACCESS 1
#elif defined(__mc68020__)
# define UNALIGNED_WORD_ACCESS 1
#else
# define UNALIGNED_WORD_ACCESS 0
#endif
/* Detection of __VA_OPT__ */
#if ! defined(HAVE_VA_ARGS_MACRO)
# undef HAVE___VA_OPT__
#else
# /* Idea taken from: https://stackoverflow.com/a/48045656 */
# define RBIMPL_TEST3(q, w, e, ...) e
# define RBIMPL_TEST2(...) RBIMPL_TEST3(__VA_OPT__(,),1,0,0)
# define RBIMPL_TEST1() RBIMPL_TEST2("ruby")
# if RBIMPL_TEST1()
# define HAVE___VA_OPT__
# else
# undef HAVE___VA_OPT__
# endif
# undef RBIMPL_TEST1
# undef RBIMPL_TEST2
# undef RBIMPL_TEST3
#endif /* HAVE_VA_ARGS_MACRO */
#endif /* RBIMPL_CONFIG_H */
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