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synced 2022-11-09 12:17:21 -05:00
443389effc
Without this patch, 20k files are opened (openat syscall) because of duplicate includes. This patch reduced it to 3k and build time was reduced compile time of range.o from 15sec -> 3sec on my machine. [Bug #16772]
46 lines
2.7 KiB
C++
46 lines
2.7 KiB
C++
/** \noop-*-C++-*-vi:ft=cpp
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Defines #RUBY3_HAS_DECLSPEC_ATTRIBUTE.
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*/
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/** Wraps (or simulates) `__has_declspec_attribute`. */
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#if defined(RUBY3_HAS_DECLSPEC_ATTRIBUTE)
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# /* Take that. */
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#elif defined(__has_declspec_attribute)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE(_) __has_declspec_attribute(_)
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#else
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_DECLSPEC_ATTRIBUTE_, _)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_align RUBY3_COMPILER_SINCE(MSVC, 8, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_deprecated RUBY3_COMPILER_SINCE(MSVC,13, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_dllexport RUBY3_COMPILER_SINCE(MSVC, 8, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_dllimport RUBY3_COMPILER_SINCE(MSVC, 8, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_empty_bases RUBY3_COMPILER_SINCE(MSVC,19, 0, 23918)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_noalias RUBY3_COMPILER_SINCE(MSVC, 8, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_noinline RUBY3_COMPILER_SINCE(MSVC,13, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_noreturn RUBY3_COMPILER_SINCE(MSVC,11, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_nothrow RUBY3_COMPILER_SINCE(MSVC, 8, 0, 0)
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# define RUBY3_HAS_DECLSPEC_ATTRIBUTE_restrict RUBY3_COMPILER_SINCE(MSVC,14, 0, 0)
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# /* Note that "8, 0, 0" might be inaccurate. */
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# if ! defined(__cplusplus)
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# /* Clang has this in both C/C++, but MSVC has this in C++ only.*/
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# undef RUBY3_HAS_DECLSPEC_ATTRIBUTE_nothrow
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# endif
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#endif
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