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config.h
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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/internal/compiler_since.h" #undef HAVE_PROTOTYPES #define HAVE_PROTOTYPES 1 #undef HAVE_STDARG_PROTOTYPES #define HAVE_STDARG_PROTOTYPES 1 #undef TOKEN_PASTE #define TOKEN_PASTE(x,y) x##y #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 /* 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 #if defined(__SUNPRO_CC) # /* Oracle Developer Studio 12.5: GCC compatibility guide says it supports # * statement expressions. But to our knowledge they support the extension # * only for C and not for C++. Prove me wrong. Am happy to support them if # * there is a way. */ # undef HAVE_STMT_AND_DECL_IN_EXPR #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(__aarch64__) # 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 */