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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]
89 lines
4.2 KiB
C++
89 lines
4.2 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_WARNING_PUSH.
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* @cond INTERNAL_MACRO
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*
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* ### Q&A ###
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*
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* Q: Why all the macros defined in this file are function-like macros?
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*
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* A: Sigh. This is because of Doxgen. Its `SKIP_FUNCTION_MACROS = YES`
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* configuration setting requests us that if we want it to ignore these
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* macros, then we have to do two things: (1) let them be defined as
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* function-like macros, and (2) place them separately in their own line,
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* like below:
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*
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* ```CXX
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* // NG -- foo's type considered something like `unsigned int`.
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* RUBY3_WARNING_PUSH
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* int foo(void);
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* RUBY3_WARNING_POP
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*
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* // OK -- the macros are ignored by Doxygen.
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* RUBY3_WARNING_PUSH()
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* int foo(void);
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* RUBY3_WARNING_POP()
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* ```
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*/
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#include "ruby/3/compiler_is.h"
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#ifdef RUBY3_WARNING_PUSH
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# /* Take that. */
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#elif RUBY3_COMPILER_SINCE(MSVC, 12, 0, 0)
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# /* Not sure exactly when but it seems VC++ 6.0 is a version with it.*/
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# define RUBY3_WARNING_PUSH() __pragma(warning(push))
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# define RUBY3_WARNING_POP() __pragma(warning(pop))
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# define RUBY3_WARNING_ERROR(flag) __pragma(warning(error: flag))
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# define RUBY3_WARNING_IGNORED(flag) __pragma(warning(disable: flag))
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#elif RUBY3_COMPILER_SINCE(Intel, 13, 0, 0)
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# define RUBY3_WARNING_PUSH() __pragma(warning(push))
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# define RUBY3_WARNING_POP() __pragma(warning(pop))
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# define RUBY3_WARNING_ERROR(flag) __pragma(warning(error: flag))
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# define RUBY3_WARNING_IGNORED(flag) __pragma(warning(disable: flag))
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#elif RUBY3_COMPILER_IS(Clang) || RUBY3_COMPILER_IS(Apple)
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# /* Not sure exactly when but it seems LLVM 2.6.0 is a version with it. */
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# define RUBY3_WARNING_PRAGMA0(x) _Pragma(# x)
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# define RUBY3_WARNING_PRAGMA1(x) RUBY3_WARNING_PRAGMA0(clang diagnostic x)
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# define RUBY3_WARNING_PRAGMA2(x, y) RUBY3_WARNING_PRAGMA1(x # y)
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# define RUBY3_WARNING_PUSH() RUBY3_WARNING_PRAGMA1(push)
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# define RUBY3_WARNING_POP() RUBY3_WARNING_PRAGMA1(pop)
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# define RUBY3_WARNING_ERROR(flag) RUBY3_WARNING_PRAGMA2(error, flag)
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# define RUBY3_WARNING_IGNORED(flag) RUBY3_WARNING_PRAGMA2(ignored, flag)
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#elif RUBY3_COMPILER_SINCE(GCC, 4, 6, 0)
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# /* https://gcc.gnu.org/onlinedocs/gcc-4.6.0/gcc/Diagnostic-Pragmas.html */
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# define RUBY3_WARNING_PRAGMA0(x) _Pragma(# x)
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# define RUBY3_WARNING_PRAGMA1(x) RUBY3_WARNING_PRAGMA0(GCC diagnostic x)
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# define RUBY3_WARNING_PRAGMA2(x, y) RUBY3_WARNING_PRAGMA1(x # y)
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# define RUBY3_WARNING_PUSH() RUBY3_WARNING_PRAGMA1(push)
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# define RUBY3_WARNING_POP() RUBY3_WARNING_PRAGMA1(pop)
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# define RUBY3_WARNING_ERROR(flag) RUBY3_WARNING_PRAGMA2(error, flag)
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# define RUBY3_WARNING_IGNORED(flag) RUBY3_WARNING_PRAGMA2(ignored, flag)
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#else
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# /* :FIXME: improve here */
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# define RUBY3_WARNING_PUSH() /* void */
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# define RUBY3_WARNING_POP() /* void */
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# define RUBY3_WARNING_ERROR(flag) /* void */
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# define RUBY3_WARNING_IGNORED(flag) /* void */
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#endif /* _MSC_VER */
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/** @endcond */
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