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5e22f873ed
Saves comitters' daily life by avoid #include-ing everything from
internal.h to make each file do so instead. This would significantly
speed up incremental builds.
We take the following inclusion order in this changeset:
1. "ruby/config.h", where _GNU_SOURCE is defined (must be the very
first thing among everything).
2. RUBY_EXTCONF_H if any.
3. Standard C headers, sorted alphabetically.
4. Other system headers, maybe guarded by #ifdef
5. Everything else, sorted alphabetically.
Exceptions are those win32-related headers, which tend not be self-
containing (headers have inclusion order dependencies).
243 lines
11 KiB
C
243 lines
11 KiB
C
#ifndef INTERNAL_COMPILERS_H /* -*- C -*- */
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#define INTERNAL_COMPILERS_H
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/**
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* @file
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* @brief Internal header absorbing C compipler differences.
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* @author \@shyouhei
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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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*/
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#include "ruby/defines.h" /* for GCC_VERSION_SINCE */
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#ifdef _MSC_VER
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# define MSC_VERSION_SINCE(_) (_MSC_VER >= _)
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# define MSC_VERSION_BEFORE(_) (_MSC_VER < _)
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#else
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# define MSC_VERSION_SINCE(_) 0
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# define MSC_VERSION_BEFORE(_) 0
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#endif
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#ifndef __has_attribute
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# define __has_attribute(...) __has_attribute_##__VA_ARGS__
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# /* GCC <= 4 lacks __has_attribute predefined macro, while has attributes
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# * themselves. We can simulate the macro like the following: */
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# define __has_attribute_aligned GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_alloc_size GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_artificial GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_always_inline GCC_VERSION_SINCE(3, 1, 0)
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# define __has_attribute_cdecl GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_cold GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_const GCC_VERSION_SINCE(2, 6, 0)
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# define __has_attribute_deprecated GCC_VERSION_SINCE(3, 1, 0)
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# define __has_attribute_dllexport GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_dllimport GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_error GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_format GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_hot GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_leaf GCC_VERSION_SINCE(4, 6, 0)
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# define __has_attribute_malloc GCC_VERSION_SINCE(3, 0, 0)
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# define __has_attribute_no_address_safety_analysis GCC_VERSION_SINCE(4, 8, 0)
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# define __has_attribute_no_sanitize_address GCC_VERSION_SINCE(4, 8, 0)
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# define __has_attribute_no_sanitize_undefined GCC_VERSION_SINCE(4, 9, 0)
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# define __has_attribute_noinline GCC_VERSION_SINCE(3, 1, 0)
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# define __has_attribute_nonnull GCC_VERSION_SINCE(3, 3, 0)
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# define __has_attribute_noreturn GCC_VERSION_SINCE(2, 5, 0)
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# define __has_attribute_nothrow GCC_VERSION_SINCE(3, 3, 0)
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# define __has_attribute_pure GCC_VERSION_SINCE(2, 96, 0)
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# define __has_attribute_returns_nonnull GCC_VERSION_SINCE(4, 9, 0)
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# define __has_attribute_returns_twice GCC_VERSION_SINCE(4, 1, 0)
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# define __has_attribute_stdcall GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_unused GCC_VERSION_SINCE(0, 0, 0)
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# define __has_attribute_visibility GCC_VERSION_SINCE(3, 3, 0)
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# define __has_attribute_visibility GCC_VERSION_SINCE(3, 3, 0)
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# define __has_attribute_warn_unused_result GCC_VERSION_SINCE(3, 4, 0)
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# define __has_attribute_warning GCC_VERSION_SINCE(4, 3, 0)
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# define __has_attribute_weak GCC_VERSION_SINCE(0, 0, 0)
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# /* Note that 0,0,0 might be inaccurate. */
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#endif
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#ifndef __has_c_attribute
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# /* As of writing everything that lacks __has_c_attribute also completely
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# * lacks C2x attributes as well. Might change in future? */
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# define __has_c_attribute(...) 0
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#endif
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#ifndef __has_declspec_attribute
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# define __has_declspec_attribute(...) __has_declspec_attribute_##__VA_ARGS__
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# define __has_declspec_attribute_align MSC_VERSION_SINCE( 800)
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# define __has_declspec_attribute_deprecated MSC_VERSION_SINCE(1300)
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# define __has_declspec_attribute_dllexport MSC_VERSION_SINCE( 800)
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# define __has_declspec_attribute_dllimport MSC_VERSION_SINCE( 800)
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# define __has_declspec_attribute_noalias MSC_VERSION_SINCE( 800)
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# define __has_declspec_attribute_noinline MSC_VERSION_SINCE(1300)
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# define __has_declspec_attribute_noreturn MSC_VERSION_SINCE(1100)
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# define __has_declspec_attribute_nothrow MSC_VERSION_SINCE( 800)
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# define __has_declspec_attribute_restrict MSC_VERSION_SINCE( 800)
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# /* Note that 800 might be inaccurate. */
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#endif
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#ifndef __has_builtin
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# /* :FIXME: Historically GCC has had tons of builtins, but it implemented
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# * __has_builtin only since GCC 10. This section can be made more
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# * granular. */
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# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */
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# define __has_builtin(...) __has_builtin_##__VA_ARGS__
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# define __has_builtin____builtin_add_overflow GCC_VERSION_SINCE(5, 1, 0)
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# define __has_builtin____builtin_bswap16 GCC_VERSION_SINCE(4, 8, 0) /* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 */
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# define __has_builtin____builtin_bswap32 GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_bswap64 GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_clz GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_clzl GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_clzll GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_constant_p GCC_VERSION_SINCE(2,95, 3)
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# define __has_builtin____builtin_ctz GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_ctzl GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_ctzll GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_mul_overflow GCC_VERSION_SINCE(5, 1, 0)
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# define __has_builtin____builtin_mul_overflow_p GCC_VERSION_SINCE(7, 0, 0)
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# define __has_builtin____builtin_popcount GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_popcountl GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_popcountll GCC_VERSION_SINCE(3, 6, 0)
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# define __has_builtin____builtin_sub_overflow GCC_VERSION_SINCE(5, 1, 0)
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# /* Take config.h definition when available */
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# ifdef HAVE_BUILTIN____BUILTIN_ADD_OVERFLOW
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# undef __has_builtin____builtin_add_overflow
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# define __has_builtin____builtin_add_overflow HAVE_BUILTIN____BUILTIN_ADD_OVERFLOW
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_BSWAP16
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# undef __has_builtin____builtin_bswap16
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# define __has_builtin____builtin_bswap16 HAVE_BUILTIN____BUILTIN_BSWAP16
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_BSWAP32
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# undef __has_builtin____builtin_bswap32
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# define __has_builtin____builtin_bswap16 HAVE_BUILTIN____BUILTIN_BSWAP32
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_BSWAP64
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# undef __has_builtin____builtin_bswap64
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# define __has_builtin____builtin_bswap64 HAVE_BUILTIN____BUILTIN_BSWAP64
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CLZ
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# undef __has_builtin____builtin_clz
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# define __has_builtin____builtin_clz HAVE_BUILTIN____BUILTIN_CLZ
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CLZL
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# undef __has_builtin____builtin_clzl
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# define __has_builtin____builtin_clzl HAVE_BUILTIN____BUILTIN_CLZL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CLZLL
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# undef __has_builtin____builtin_clzll
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# define __has_builtin____builtin_clzll HAVE_BUILTIN____BUILTIN_CLZLL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CONSTANT_P
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# undef __has_builtin____builtin_constant_p
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# define __has_builtin____builtin_constant_p HAVE_BUILTIN____BUILTIN_CONSTANT_P
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CTZ
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# undef __has_builtin____builtin_ctz
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# define __has_builtin____builtin_ctz HAVE_BUILTIN____BUILTIN_CTZ
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CTZL
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# undef __has_builtin____builtin_ctzl
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# define __has_builtin____builtin_ctzl HAVE_BUILTIN____BUILTIN_CTZL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_CTZLL
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# undef __has_builtin____builtin_ctzll
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# define __has_builtin____builtin_ctzll HAVE_BUILTIN____BUILTIN_CTZLL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW
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# undef __has_builtin____builtin_mul_overflow
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# define __has_builtin____builtin_mul_overflow HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW_P
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# undef __has_builtin____builtin_mul_overflow_p
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# define __has_builtin____builtin_mul_overflow_p HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW_P
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNT
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# undef __has_builtin____builtin_popcount
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# define __has_builtin____builtin_popcount HAVE_BUILTIN____BUILTIN_POPCOUNT
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNTL
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# undef __has_builtin____builtin_popcountl
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# define __has_builtin____builtin_popcountl HAVE_BUILTIN____BUILTIN_POPCOUNTL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNTLL
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# undef __has_builtin____builtin_popcountll
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# define __has_builtin____builtin_popcountll HAVE_BUILTIN____BUILTIN_POPCOUNTLL
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# endif
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# ifdef HAVE_BUILTIN____BUILTIN_SUB_OVERFLOW
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# undef __has_builtin____builtin_SUB_overflow
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# define __has_builtin____builtin_sub_overflow HAVE_BUILTIN____BUILTIN_SUB_OVERFLOW
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# endif
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#endif
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#ifndef __has_feature
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# define __has_feature(...) 0
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#endif
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#ifndef __has_extension
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# /* Pre-3.0 clang had __has_feature but not __has_extension. */
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# define __has_extension __has_feature
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#endif
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#ifndef __has_warning
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# /* We cannot simulate __has_warning like the ones above, because it takes
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# * string liteals (we can stringize a macro arugment but there is no such
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# * thing like an unquote of strrings). */
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# define __has_warning(...) 0
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#endif
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#ifndef __GNUC__
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# define __extension__ /* void */
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#endif
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#ifndef MAYBE_UNUSED
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# define MAYBE_UNUSED(x) x
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#endif
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#ifndef WARN_UNUSED_RESULT
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# define WARN_UNUSED_RESULT(x) x
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#endif
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#define RB_OBJ_BUILTIN_TYPE(obj) rb_obj_builtin_type(obj)
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#define OBJ_BUILTIN_TYPE(obj) RB_OBJ_BUILTIN_TYPE(obj)
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#ifdef __GNUC__
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#define rb_obj_builtin_type(obj) \
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__extension__({ \
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VALUE arg_obj = (obj); \
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RB_SPECIAL_CONST_P(arg_obj) ? -1 : \
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RB_BUILTIN_TYPE(arg_obj); \
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})
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#else
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static inline int
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rb_obj_builtin_type(VALUE obj)
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{
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return RB_SPECIAL_CONST_P(obj) ? -1 :
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RB_BUILTIN_TYPE(obj);
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}
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#endif
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/* A macro for defining a flexible array, like: VALUE ary[FLEX_ARY_LEN]; */
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define FLEX_ARY_LEN /* VALUE ary[]; */
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#elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
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# define FLEX_ARY_LEN 0 /* VALUE ary[0]; */
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#else
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# define FLEX_ARY_LEN 1 /* VALUE ary[1]; */
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#endif
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/*
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* For declaring bitfields out of non-unsigned int types:
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* struct date {
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* BITFIELD(enum months, month, 4);
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* ...
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* };
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*/
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define BITFIELD(type, name, size) type name : size
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#else
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# define BITFIELD(type, name, size) unsigned int name : size
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#endif
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#endif /* INTERNAL_COMPILERS_H */
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