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platform.h
Go to the documentation of this file.
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1997-2016, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* FILE NAME : platform.h
*
* Date Name Description
* 05/13/98 nos Creation (content moved here from ptypes.h).
* 03/02/99 stephen Added AS400 support.
* 03/30/99 stephen Added Linux support.
* 04/13/99 stephen Reworked for autoconf.
******************************************************************************
*/
#ifndef _PLATFORM_H
#define _PLATFORM_H
#include "unicode/uconfig.h"
#include "unicode/uvernum.h"
#ifdef U_IN_DOXYGEN
/*
* Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented.
* Solution: #define any defines for non @internal API here, so that they are visible in the docs. If you just set PREDEFINED in Doxyfile.in, they won't be documented.
*/
/* None for now. */
#endif
#define U_PF_UNKNOWN 0
#define U_PF_WINDOWS 1000
#define U_PF_MINGW 1800
#define U_PF_CYGWIN 1900
/* Reserve 2000 for U_PF_UNIX? */
#define U_PF_HPUX 2100
#define U_PF_SOLARIS 2600
#define U_PF_BSD 3000
#define U_PF_AIX 3100
#define U_PF_IRIX 3200
#define U_PF_DARWIN 3500
#define U_PF_IPHONE 3550
#define U_PF_QNX 3700
#define U_PF_LINUX 4000
#define U_PF_BROWSER_NATIVE_CLIENT 4020
#define U_PF_ANDROID 4050
#define U_PF_HAIKU 4080
#define U_PF_FUCHSIA 4100
/* Maximum value for Linux-based platform is 4499 */
#define U_PF_EMSCRIPTEN 5010
#define U_PF_OS390 9000
#define U_PF_OS400 9400
#ifdef U_PLATFORM
/* Use the predefined value. */
#elif defined(__MINGW32__)
# define U_PLATFORM U_PF_MINGW
#elif defined(__CYGWIN__)
# define U_PLATFORM U_PF_CYGWIN
/* Cygwin uchar.h doesn't exist until Cygwin 3.5. */
# include <cygwin/version.h>
#elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
# define U_PLATFORM U_PF_WINDOWS
#elif defined(__ANDROID__)
# define U_PLATFORM U_PF_ANDROID
/* Android wchar_t support depends on the API level. */
# include <android/api-level.h>
#elif defined(__pnacl__) || defined(__native_client__)
# define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT
#elif defined(__Fuchsia__)
# define U_PLATFORM U_PF_FUCHSIA
#elif defined(linux) || defined(__linux__) || defined(__linux)
# define U_PLATFORM U_PF_LINUX
#elif defined(__APPLE__) && defined(__MACH__)
# include <TargetConditionals.h>
# if (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && (defined(TARGET_OS_MACCATALYST) && !TARGET_OS_MACCATALYST) /* variant of TARGET_OS_MAC */
# define U_PLATFORM U_PF_IPHONE
# else
# define U_PLATFORM U_PF_DARWIN
# endif
#elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__)
# if defined(__FreeBSD__)
# include <sys/endian.h>
# endif
# define U_PLATFORM U_PF_BSD
#elif defined(sun) || defined(__sun)
/* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */
# define U_PLATFORM U_PF_SOLARIS
# if defined(__GNUC__)
/* Solaris/GCC needs this header file to get the proper endianness. Normally, this
* header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h
* is included which does not include this header file.
*/
# include <sys/isa_defs.h>
# endif
#elif defined(_AIX) || defined(__TOS_AIX__)
# define U_PLATFORM U_PF_AIX
#elif defined(_hpux) || defined(hpux) || defined(__hpux)
# define U_PLATFORM U_PF_HPUX
#elif defined(sgi) || defined(__sgi)
# define U_PLATFORM U_PF_IRIX
#elif defined(__QNX__) || defined(__QNXNTO__)
# define U_PLATFORM U_PF_QNX
#elif defined(__TOS_MVS__)
# define U_PLATFORM U_PF_OS390
#elif defined(__OS400__) || defined(__TOS_OS400__)
# define U_PLATFORM U_PF_OS400
#elif defined(__HAIKU__)
# define U_PLATFORM U_PF_HAIKU
#elif defined(__EMSCRIPTEN__)
# define U_PLATFORM U_PF_EMSCRIPTEN
#else
# define U_PLATFORM U_PF_UNKNOWN
#endif
#if (defined(_MSC_VER) && !(defined(__clang__) && __clang__)) || defined(U_IN_DOXYGEN)
# define U_REAL_MSVC
#endif
/* Commented out because this is already set in mh-cygwin-msvc
#if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER)
# define CYGWINMSVC
#endif
*/
#ifdef U_IN_DOXYGEN
# define CYGWINMSVC
#endif
#ifdef U_PLATFORM_USES_ONLY_WIN32_API
/* Use the predefined value. */
#elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC)
# define U_PLATFORM_USES_ONLY_WIN32_API 1
#else
/* Cygwin implements POSIX. */
# define U_PLATFORM_USES_ONLY_WIN32_API 0
#endif
#ifdef U_PLATFORM_HAS_WIN32_API
/* Use the predefined value. */
#elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
# define U_PLATFORM_HAS_WIN32_API 1
#else
# define U_PLATFORM_HAS_WIN32_API 0
#endif
#ifdef U_PLATFORM_HAS_WINUWP_API
/* Use the predefined value. */
#else
# define U_PLATFORM_HAS_WINUWP_API 0
#endif
#ifdef U_PLATFORM_IMPLEMENTS_POSIX
/* Use the predefined value. */
#elif U_PLATFORM_USES_ONLY_WIN32_API
# define U_PLATFORM_IMPLEMENTS_POSIX 0
#else
# define U_PLATFORM_IMPLEMENTS_POSIX 1
#endif
#ifdef U_PLATFORM_IS_LINUX_BASED
/* Use the predefined value. */
#elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499
# define U_PLATFORM_IS_LINUX_BASED 1
#else
# define U_PLATFORM_IS_LINUX_BASED 0
#endif
#ifdef U_PLATFORM_IS_DARWIN_BASED
/* Use the predefined value. */
#elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE
# define U_PLATFORM_IS_DARWIN_BASED 1
#else
# define U_PLATFORM_IS_DARWIN_BASED 0
#endif
/*===========================================================================*/
/*===========================================================================*/
#ifdef __GNUC__
# define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__)
#else
# define U_GCC_MAJOR_MINOR 0
#endif
#ifdef U_IS_BIG_ENDIAN
/* Use the predefined value. */
#elif defined(BYTE_ORDER) && defined(BIG_ENDIAN)
# define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN)
#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
/* gcc */
# define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
#elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN)
# define U_IS_BIG_ENDIAN 1
#elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN)
# define U_IS_BIG_ENDIAN 0
#elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__)
/* These platforms do not appear to predefine any endianness macros. */
# define U_IS_BIG_ENDIAN 1
#elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0)
/* HPPA do not appear to predefine any endianness macros. */
# define U_IS_BIG_ENDIAN 1
#elif defined(sparc) || defined(__sparc) || defined(__sparc__)
/* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */
# define U_IS_BIG_ENDIAN 1
#else
# define U_IS_BIG_ENDIAN 0
#endif
#ifdef U_HAVE_DEBUG_LOCATION_NEW
/* Use the predefined value. */
#elif defined(_MSC_VER)
# define U_HAVE_DEBUG_LOCATION_NEW 1
#else
# define U_HAVE_DEBUG_LOCATION_NEW 0
#endif
/* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */
#ifdef __has_attribute
# define UPRV_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
# define UPRV_HAS_ATTRIBUTE(x) 0
#endif
#ifdef __has_cpp_attribute
# define UPRV_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
#else
# define UPRV_HAS_CPP_ATTRIBUTE(x) 0
#endif
#ifdef __has_declspec_attribute
# define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x)
#else
# define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) 0
#endif
#ifdef __has_builtin
# define UPRV_HAS_BUILTIN(x) __has_builtin(x)
#else
# define UPRV_HAS_BUILTIN(x) 0
#endif
#ifdef __has_feature
# define UPRV_HAS_FEATURE(x) __has_feature(x)
#else
# define UPRV_HAS_FEATURE(x) 0
#endif
#ifdef __has_extension
# define UPRV_HAS_EXTENSION(x) __has_extension(x)
#else
# define UPRV_HAS_EXTENSION(x) 0
#endif
#ifdef __has_warning
# define UPRV_HAS_WARNING(x) __has_warning(x)
#else
# define UPRV_HAS_WARNING(x) 0
#endif
#if defined(__clang__)
#define UPRV_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined")))
#else
#define UPRV_NO_SANITIZE_UNDEFINED
#endif
#if defined(__GNUC__) && __GNUC__>=3
# define U_MALLOC_ATTR __attribute__ ((__malloc__))
#else
# define U_MALLOC_ATTR
#endif
#if (defined(__GNUC__) && \
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \
UPRV_HAS_ATTRIBUTE(alloc_size)
# define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X)))
# define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y)))
#else
# define U_ALLOC_SIZE_ATTR(X)
# define U_ALLOC_SIZE_ATTR2(X,Y)
#endif
#ifdef U_CPLUSPLUS_VERSION
# if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus)
# undef U_CPLUSPLUS_VERSION
# define U_CPLUSPLUS_VERSION 0
# endif
/* Otherwise use the predefined value. */
#elif !defined(__cplusplus)
# define U_CPLUSPLUS_VERSION 0
// The value of _MSVC_LANG for C++23 preview is undocumented, except that it is larger than 202002.
// As of this writing, it is 202004.
#elif __cplusplus >= 202302L || (defined(_MSVC_LANG) && _MSVC_LANG > 202002L)
# define U_CPLUSPLUS_VERSION 23
#elif __cplusplus >= 202002L || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
# define U_CPLUSPLUS_VERSION 20
#elif __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
# define U_CPLUSPLUS_VERSION 17
#elif __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
# define U_CPLUSPLUS_VERSION 14
#elif __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L)
# define U_CPLUSPLUS_VERSION 11
#else
// C++98 or C++03
# define U_CPLUSPLUS_VERSION 1
#endif
#if defined(U_FALLTHROUGH)
// Use the predefined value.
#elif defined(__clang__)
// Test for compiler vs. feature separately.
// Other compilers might choke on the feature test.
# if UPRV_HAS_CPP_ATTRIBUTE(clang::fallthrough) || \
(UPRV_HAS_FEATURE(cxx_attributes) && \
UPRV_HAS_WARNING("-Wimplicit-fallthrough"))
# define U_FALLTHROUGH [[clang::fallthrough]]
# endif
#elif defined(__GNUC__) && (__GNUC__ >= 7)
# define U_FALLTHROUGH __attribute__((fallthrough))
#endif
#ifndef U_FALLTHROUGH
# define U_FALLTHROUGH
#endif
/*===========================================================================*/
/*===========================================================================*/
#define U_ASCII_FAMILY 0
#define U_EBCDIC_FAMILY 1
#ifdef U_CHARSET_FAMILY
/* Use the predefined value. */
#elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB)
# define U_CHARSET_FAMILY U_EBCDIC_FAMILY
#elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__)
# define U_CHARSET_FAMILY U_EBCDIC_FAMILY
#else
# define U_CHARSET_FAMILY U_ASCII_FAMILY
#endif
#ifdef U_CHARSET_IS_UTF8
/* Use the predefined value. */
#elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \
U_PLATFORM == U_PF_EMSCRIPTEN
# define U_CHARSET_IS_UTF8 1
#else
# define U_CHARSET_IS_UTF8 0
#endif
/*===========================================================================*/
/*===========================================================================*/
#ifdef U_HAVE_WCHAR_H
/* Use the predefined value. */
#elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9
/*
* Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t.
* The type and header existed, but the library functions did not work as expected.
* The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway.
*/
# define U_HAVE_WCHAR_H 0
#else
# define U_HAVE_WCHAR_H 1
#endif
#ifdef U_SIZEOF_WCHAR_T
/* Use the predefined value. */
#elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9)
/*
* Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring.
* Newer Mac OS X has size 4.
*/
# define U_SIZEOF_WCHAR_T 1
#elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN
# define U_SIZEOF_WCHAR_T 2
#elif U_PLATFORM == U_PF_AIX
/*
* AIX 6.1 information, section "Wide character data representation":
* "... the wchar_t datatype is 32-bit in the 64-bit environment and
* 16-bit in the 32-bit environment."
* and
* "All locales use Unicode for their wide character code values (process code),
* except the IBM-eucTW codeset."
*/
# ifdef __64BIT__
# define U_SIZEOF_WCHAR_T 4
# else
# define U_SIZEOF_WCHAR_T 2
# endif
#elif U_PLATFORM == U_PF_OS390
/*
* z/OS V1R11 information center, section "LP64 | ILP32":
* "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes.
* Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes."
*/
# ifdef _LP64
# define U_SIZEOF_WCHAR_T 4
# else
# define U_SIZEOF_WCHAR_T 2
# endif
#elif U_PLATFORM == U_PF_OS400
# if defined(__UTF32__)
/*
* LOCALETYPE(*LOCALEUTF) is specified.
* Wide-character strings are in UTF-32,
* narrow-character strings are in UTF-8.
*/
# define U_SIZEOF_WCHAR_T 4
# elif defined(__UCS2__)
/*
* LOCALETYPE(*LOCALEUCS2) is specified.
* Wide-character strings are in UCS-2,
* narrow-character strings are in EBCDIC.
*/
# define U_SIZEOF_WCHAR_T 2
# else
/*
* LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified.
* Wide-character strings are in 16-bit EBCDIC,
* narrow-character strings are in EBCDIC.
*/
# define U_SIZEOF_WCHAR_T 2
# endif
#else
# define U_SIZEOF_WCHAR_T 4
#endif
#ifndef U_HAVE_WCSCPY
#define U_HAVE_WCSCPY U_HAVE_WCHAR_H
#endif
#ifdef U_HAVE_CHAR16_T
/* Use the predefined value. */
#else
/*
* Notes:
* C++11 and C11 require support for UTF-16 literals
* Doesn't work on Mac C11 (see workaround in ptypes.h)
* or Cygwin less than 3.5.
*/
# if defined(__cplusplus)
# define U_HAVE_CHAR16_T 1
# elif U_PLATFORM_IS_DARWIN_BASED || (U_PLATFORM == U_PF_CYGWIN && CYGWIN_VERSION_DLL_MAJOR < 3005)
# define U_HAVE_CHAR16_T 0
# else
// conformant C11
# define U_HAVE_CHAR16_T 1
# endif
#endif
#ifdef U_DECLARE_UTF16
/* Use the predefined value. */
#elif U_HAVE_CHAR16_T \
|| (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \
|| (defined(__HP_aCC) && __HP_aCC >= 035000) \
|| (defined(__HP_cc) && __HP_cc >= 111106) \
|| (defined(U_IN_DOXYGEN))
# define U_DECLARE_UTF16(string) u ## string
#elif U_SIZEOF_WCHAR_T == 2 \
&& (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__)))
# define U_DECLARE_UTF16(string) L ## string
#else
/* Leave U_DECLARE_UTF16 undefined. See unistr.h. */
#endif
/*===========================================================================*/
/*===========================================================================*/
#ifdef U_EXPORT
/* Use the predefined value. */
#elif defined(U_STATIC_IMPLEMENTATION)
# define U_EXPORT
#elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllexport__) && \
UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllimport__))
# define U_EXPORT __declspec(dllexport)
#elif defined(__GNUC__) || defined(__open_xl__)
# define U_EXPORT __attribute__((visibility("default")))
#elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \
|| (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550)
# define U_EXPORT __global
/*#elif defined(__HP_aCC) || defined(__HP_cc)
# define U_EXPORT __declspec(dllexport)*/
#else
# define U_EXPORT
#endif
/* U_CALLCONV is related to U_EXPORT2 */
#ifdef U_EXPORT2
/* Use the predefined value. */
#elif defined(_MSC_VER)
# define U_EXPORT2 __cdecl
#else
# define U_EXPORT2
#endif
#ifdef U_IMPORT
/* Use the predefined value. */
#elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllexport__) && \
UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllimport__))
/* Windows needs to export/import data. */
# define U_IMPORT __declspec(dllimport)
#else
# define U_IMPORT
#endif
#ifdef U_HIDDEN
/* Use the predefined value. */
#elif defined(__GNUC__) || defined(__open_xl__)
# define U_HIDDEN __attribute__((visibility("hidden")))
#else
# define U_HIDDEN
#endif
#if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
# define U_CALLCONV __cdecl
#else
# define U_CALLCONV U_EXPORT2
#endif
#if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
# define U_CALLCONV_FPTR U_CALLCONV
#else
# define U_CALLCONV_FPTR
#endif
#endif // _PLATFORM_H
uconfig.h
User-configurable settings.
uvernum.h
C API: definitions of ICU version numbers.