1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 ******************************************************************************
6 * Copyright (C) 1997-2016, International Business Machines
7 * Corporation and others. All Rights Reserved.
9 ******************************************************************************
11 * FILE NAME : platform.h
13 * Date Name Description
14 * 05/13/98 nos Creation (content moved here from ptypes.h).
15 * 03/02/99 stephen Added AS400 support.
16 * 03/30/99 stephen Added Linux support.
17 * 04/13/99 stephen Reworked for autoconf.
18 ******************************************************************************
24 #include "unicode/uconfig.h"
25 #include "unicode/uvernum.h"
29 * \brief Basic types for the platform.
31 * This file used to be generated by autoconf/configure.
32 * Starting with ICU 49, platform.h is a normal source file,
33 * to simplify cross-compiling and working with non-autoconf/make build systems.
35 * When a value in this file does not work on a platform, then please
36 * try to derive it from the U_PLATFORM value
37 * (for which we might need a new value constant in rare cases)
38 * and/or from other macros that are predefined by the compiler
39 * or defined in standard (POSIX or platform or compiler) headers.
41 * As a temporary workaround, you can add an explicit <code>#define</code> for some macros
42 * before it is first tested, or add an equivalent -D macro definition
43 * to the compiler's command line.
45 * Note: Some compilers provide ways to show the predefined macros.
46 * For example, with gcc you can compile an empty .c file and have the compiler
47 * print the predefined macros with
49 * gcc -E -dM -x c /dev/null | sort
51 * (You can provide an actual empty .c file rather than /dev/null.
52 * <code>-x c++</code> is for C++.)
56 * Define some things so that they can be documented.
61 * Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented.
62 * 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.
70 * The U_PLATFORM macro defines the platform we're on.
72 * We used to define one different, value-less macro per platform.
73 * That made it hard to know the set of relevant platforms and macros,
74 * and hard to deal with variants of platforms.
76 * Starting with ICU 49, we define platforms as numeric macros,
77 * with ranges of values for related platforms and their variants.
78 * The U_PLATFORM macro is set to one of these values.
80 * Historical note from the Solaris Wikipedia article:
81 * AT&T and Sun collaborated on a project to merge the most popular Unix variants
82 * on the market at that time: BSD, System V, and Xenix.
83 * This became Unix System V Release 4 (SVR4).
88 /** Unknown platform. @internal */
89 #define U_PF_UNKNOWN 0
90 /** Windows @internal */
91 #define U_PF_WINDOWS 1000
92 /** MinGW. Windows, calls to Win32 API, but using GNU gcc and binutils. @internal */
93 #define U_PF_MINGW 1800
95 * Cygwin. Windows, calls to cygwin1.dll for Posix functions,
96 * using MSVC or GNU gcc and binutils.
99 #define U_PF_CYGWIN 1900
100 /* Reserve 2000 for U_PF_UNIX? */
101 /** HP-UX is based on UNIX System V. @internal */
102 #define U_PF_HPUX 2100
103 /** Solaris is a Unix operating system based on SVR4. @internal */
104 #define U_PF_SOLARIS 2600
105 /** BSD is a UNIX operating system derivative. @internal */
106 #define U_PF_BSD 3000
107 /** AIX is based on UNIX System V Releases and 4.3 BSD. @internal */
108 #define U_PF_AIX 3100
109 /** IRIX is based on UNIX System V with BSD extensions. @internal */
110 #define U_PF_IRIX 3200
112 * Darwin is a POSIX-compliant operating system, composed of code developed by Apple,
113 * as well as code derived from NeXTSTEP, BSD, and other projects,
114 * built around the Mach kernel.
115 * Darwin forms the core set of components upon which Mac OS X, Apple TV, and iOS are based.
116 * (Original description modified from WikiPedia.)
119 #define U_PF_DARWIN 3500
120 /** iPhone OS (iOS) is a derivative of Mac OS X. @internal */
121 #define U_PF_IPHONE 3550
122 /** QNX is a commercial Unix-like real-time operating system related to BSD. @internal */
123 #define U_PF_QNX 3700
124 /** Linux is a Unix-like operating system. @internal */
125 #define U_PF_LINUX 4000
127 * Native Client is pretty close to Linux.
128 * See https://developer.chrome.com/native-client and
129 * http://www.chromium.org/nativeclient
132 #define U_PF_BROWSER_NATIVE_CLIENT 4020
133 /** Android is based on Linux. @internal */
134 #define U_PF_ANDROID 4050
135 /* Maximum value for Linux-based platform is 4499 */
136 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */
137 #define U_PF_OS390 9000
138 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */
139 #define U_PF_OS400 9400
142 /* Use the predefined value. */
143 #elif defined(__MINGW32__)
144 # define U_PLATFORM U_PF_MINGW
145 #elif defined(__CYGWIN__)
146 # define U_PLATFORM U_PF_CYGWIN
147 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
148 # define U_PLATFORM U_PF_WINDOWS
149 #elif defined(__ANDROID__)
150 # define U_PLATFORM U_PF_ANDROID
151 /* Android wchar_t support depends on the API level. */
152 # include <android/api-level.h>
153 #elif defined(__native_client__)
154 # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT
155 #elif defined(linux) || defined(__linux__) || defined(__linux)
156 # define U_PLATFORM U_PF_LINUX
157 #elif defined(__APPLE__) && defined(__MACH__)
158 # include <TargetConditionals.h>
159 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */
160 # define U_PLATFORM U_PF_IPHONE
162 # define U_PLATFORM U_PF_DARWIN
164 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__)
165 # if defined(__FreeBSD__)
166 # include <sys/endian.h>
168 # define U_PLATFORM U_PF_BSD
169 #elif defined(sun) || defined(__sun)
170 /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */
171 # define U_PLATFORM U_PF_SOLARIS
172 # if defined(__GNUC__)
173 /* Solaris/GCC needs this header file to get the proper endianness. Normally, this
174 * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h
175 * is included which does not include this header file.
177 # include <sys/isa_defs.h>
179 #elif defined(_AIX) || defined(__TOS_AIX__)
180 # define U_PLATFORM U_PF_AIX
181 #elif defined(_hpux) || defined(hpux) || defined(__hpux)
182 # define U_PLATFORM U_PF_HPUX
183 #elif defined(sgi) || defined(__sgi)
184 # define U_PLATFORM U_PF_IRIX
185 #elif defined(__QNX__) || defined(__QNXNTO__)
186 # define U_PLATFORM U_PF_QNX
187 #elif defined(__TOS_MVS__)
188 # define U_PLATFORM U_PF_OS390
189 #elif defined(__OS400__) || defined(__TOS_OS400__)
190 # define U_PLATFORM U_PF_OS400
192 # define U_PLATFORM U_PF_UNKNOWN
197 * Defined if this is Windows with Cygwin, but using MSVC rather than gcc.
198 * Otherwise undefined.
201 /* Commented out because this is already set in mh-cygwin-msvc
202 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER)
208 * \def U_PLATFORM_USES_ONLY_WIN32_API
209 * Defines whether the platform uses only the Win32 API.
210 * Set to 1 for Windows/MSVC and MinGW but not Cygwin.
213 #ifdef U_PLATFORM_USES_ONLY_WIN32_API
214 /* Use the predefined value. */
215 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC)
216 # define U_PLATFORM_USES_ONLY_WIN32_API 1
218 /* Cygwin implements POSIX. */
219 # define U_PLATFORM_USES_ONLY_WIN32_API 0
223 * \def U_PLATFORM_HAS_WIN32_API
224 * Defines whether the Win32 API is available on the platform.
225 * Set to 1 for Windows/MSVC, MinGW and Cygwin.
228 #ifdef U_PLATFORM_HAS_WIN32_API
229 /* Use the predefined value. */
230 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
231 # define U_PLATFORM_HAS_WIN32_API 1
233 # define U_PLATFORM_HAS_WIN32_API 0
237 * \def U_PLATFORM_IMPLEMENTS_POSIX
238 * Defines whether the platform implements (most of) the POSIX API.
239 * Set to 1 for Cygwin and most other platforms.
242 #ifdef U_PLATFORM_IMPLEMENTS_POSIX
243 /* Use the predefined value. */
244 #elif U_PLATFORM_USES_ONLY_WIN32_API
245 # define U_PLATFORM_IMPLEMENTS_POSIX 0
247 # define U_PLATFORM_IMPLEMENTS_POSIX 1
251 * \def U_PLATFORM_IS_LINUX_BASED
252 * Defines whether the platform is Linux or one of its derivatives.
255 #ifdef U_PLATFORM_IS_LINUX_BASED
256 /* Use the predefined value. */
257 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499
258 # define U_PLATFORM_IS_LINUX_BASED 1
260 # define U_PLATFORM_IS_LINUX_BASED 0
264 * \def U_PLATFORM_IS_DARWIN_BASED
265 * Defines whether the platform is Darwin or one of its derivatives.
268 #ifdef U_PLATFORM_IS_DARWIN_BASED
269 /* Use the predefined value. */
270 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE
271 # define U_PLATFORM_IS_DARWIN_BASED 1
273 # define U_PLATFORM_IS_DARWIN_BASED 0
277 * \def U_HAVE_STDINT_H
278 * Defines whether stdint.h is available. It is a C99 standard header.
279 * We used to include inttypes.h which includes stdint.h but we usually do not need
280 * the additional definitions from inttypes.h.
283 #ifdef U_HAVE_STDINT_H
284 /* Use the predefined value. */
285 #elif U_PLATFORM_USES_ONLY_WIN32_API
286 # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600)
287 /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */
288 # define U_HAVE_STDINT_H 1
290 # define U_HAVE_STDINT_H 0
292 #elif U_PLATFORM == U_PF_SOLARIS
293 /* Solaris has inttypes.h but not stdint.h. */
294 # define U_HAVE_STDINT_H 0
295 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER)
296 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */
297 # define U_HAVE_STDINT_H 0
299 # define U_HAVE_STDINT_H 1
303 * \def U_HAVE_INTTYPES_H
304 * Defines whether inttypes.h is available. It is a C99 standard header.
305 * We include inttypes.h where it is available but stdint.h is not.
308 #ifdef U_HAVE_INTTYPES_H
309 /* Use the predefined value. */
310 #elif U_PLATFORM == U_PF_SOLARIS
311 /* Solaris has inttypes.h but not stdint.h. */
312 # define U_HAVE_INTTYPES_H 1
313 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER)
314 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */
315 # define U_HAVE_INTTYPES_H 1
317 /* Most platforms have both inttypes.h and stdint.h, or neither. */
318 # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H
322 * \def U_IOSTREAM_SOURCE
323 * Defines what support for C++ streams is available.
325 * If U_IOSTREAM_SOURCE is set to 199711, then <iostream> is available
326 * (the ISO/IEC C++ FDIS was published in November 1997), and then
327 * one should qualify streams using the std namespace in ICU header
329 * Starting with ICU 49, this is the only supported version.
331 * If U_IOSTREAM_SOURCE is set to 198506, then <iostream.h> is
332 * available instead (in June 1985 Stroustrup published
333 * "An Extensible I/O Facility for C++" at the summer USENIX conference).
334 * Starting with ICU 49, this version is not supported any more.
336 * If U_IOSTREAM_SOURCE is 0 (or any value less than 199711),
337 * then C++ streams are not available and
338 * support for them will be silently suppressed in ICU.
342 #ifndef U_IOSTREAM_SOURCE
343 #define U_IOSTREAM_SOURCE 199711
347 * \def U_HAVE_STD_STRING
348 * Defines whether the standard C++ (STL) <string> header is available.
351 #ifdef U_HAVE_STD_STRING
352 /* Use the predefined value. */
354 # define U_HAVE_STD_STRING 1
357 /*===========================================================================*/
358 /** @{ Compiler and environment features */
359 /*===========================================================================*/
362 * \def U_GCC_MAJOR_MINOR
363 * Indicates whether the compiler is gcc (test for != 0),
364 * and if so, contains its major (times 100) and minor version numbers.
365 * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0.
367 * For example, for testing for whether we have gcc, and whether it's 4.6 or higher,
368 * use "#if U_GCC_MAJOR_MINOR >= 406".
372 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__)
374 # define U_GCC_MAJOR_MINOR 0
378 * \def U_IS_BIG_ENDIAN
379 * Determines the endianness of the platform.
382 #ifdef U_IS_BIG_ENDIAN
383 /* Use the predefined value. */
384 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN)
385 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN)
386 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
388 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
389 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN)
390 # define U_IS_BIG_ENDIAN 1
391 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN)
392 # define U_IS_BIG_ENDIAN 0
393 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__)
394 /* These platforms do not appear to predefine any endianness macros. */
395 # define U_IS_BIG_ENDIAN 1
396 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0)
397 /* HPPA do not appear to predefine any endianness macros. */
398 # define U_IS_BIG_ENDIAN 1
399 #elif defined(sparc) || defined(__sparc) || defined(__sparc__)
400 /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */
401 # define U_IS_BIG_ENDIAN 1
403 # define U_IS_BIG_ENDIAN 0
407 * \def U_HAVE_PLACEMENT_NEW
408 * Determines whether to override placement new and delete for STL.
411 #ifdef U_HAVE_PLACEMENT_NEW
412 /* Use the predefined value. */
413 #elif defined(__BORLANDC__)
414 # define U_HAVE_PLACEMENT_NEW 0
416 # define U_HAVE_PLACEMENT_NEW 1
420 * \def U_HAVE_DEBUG_LOCATION_NEW
421 * Define this to define the MFC debug version of the operator new.
425 #ifdef U_HAVE_DEBUG_LOCATION_NEW
426 /* Use the predefined value. */
427 #elif defined(_MSC_VER)
428 # define U_HAVE_DEBUG_LOCATION_NEW 1
430 # define U_HAVE_DEBUG_LOCATION_NEW 0
433 /* Compatibility with non clang compilers: http://clang.llvm.org/docs/LanguageExtensions.html */
434 #ifndef __has_attribute
435 # define __has_attribute(x) 0
437 #ifndef __has_cpp_attribute
438 # define __has_cpp_attribute(x) 0
440 #ifndef __has_builtin
441 # define __has_builtin(x) 0
443 #ifndef __has_feature
444 # define __has_feature(x) 0
446 #ifndef __has_extension
447 # define __has_extension(x) 0
449 #ifndef __has_warning
450 # define __has_warning(x) 0
455 * Attribute to mark functions as malloc-like
458 #if defined(__GNUC__) && __GNUC__>=3
459 # define U_MALLOC_ATTR __attribute__ ((__malloc__))
461 # define U_MALLOC_ATTR
465 * \def U_ALLOC_SIZE_ATTR
466 * Attribute to specify the size of the allocated buffer for malloc-like functions
469 #if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || __has_attribute(alloc_size)
470 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X)))
471 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y)))
473 # define U_ALLOC_SIZE_ATTR(X)
474 # define U_ALLOC_SIZE_ATTR2(X,Y)
478 * \def U_CPLUSPLUS_VERSION
479 * 0 if no C++; 1, 11, 14, ... if C++.
480 * Support for specific features cannot always be determined by the C++ version alone.
483 #ifdef U_CPLUSPLUS_VERSION
484 # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus)
485 # undef U_CPLUSPLUS_VERSION
486 # define U_CPLUSPLUS_VERSION 0
488 /* Otherwise use the predefined value. */
489 #elif !defined(__cplusplus)
490 # define U_CPLUSPLUS_VERSION 0
491 #elif __cplusplus >= 201402L
492 # define U_CPLUSPLUS_VERSION 14
493 #elif __cplusplus >= 201103L
494 # define U_CPLUSPLUS_VERSION 11
497 # define U_CPLUSPLUS_VERSION 1
501 * \def U_HAVE_RVALUE_REFERENCES
502 * Set to 1 if the compiler supports rvalue references.
503 * C++11 feature, necessary for move constructor & move assignment.
506 #ifdef U_HAVE_RVALUE_REFERENCES
507 /* Use the predefined value. */
508 #elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_rvalue_references) \
509 || defined(__GXX_EXPERIMENTAL_CXX0X__) \
510 || (defined(_MSC_VER) && _MSC_VER >= 1600) /* Visual Studio 2010 */
511 # define U_HAVE_RVALUE_REFERENCES 1
513 # define U_HAVE_RVALUE_REFERENCES 0
518 * "noexcept" if supported, otherwise empty.
519 * Some code, especially STL containers, uses move semantics of objects only
520 * if the move constructor and the move operator are declared as not throwing exceptions.
524 /* Use the predefined value. */
525 #elif defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS /* Visual Studio */
527 #elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_noexcept) || __has_extension(cxx_noexcept) \
528 || (defined(_MSC_VER) && _MSC_VER >= 1900) /* Visual Studio 2015 */
529 # define U_NOEXCEPT noexcept
536 * Annotate intentional fall-through between switch labels.
537 * http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough
541 # if __has_cpp_attribute(clang::fallthrough) || \
542 (__has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough"))
543 # define U_FALLTHROUGH [[clang::fallthrough]]
545 # define U_FALLTHROUGH
548 # define U_FALLTHROUGH
554 /*===========================================================================*/
555 /** @{ Character data types */
556 /*===========================================================================*/
559 * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform.
562 #define U_ASCII_FAMILY 0
565 * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform.
568 #define U_EBCDIC_FAMILY 1
571 * \def U_CHARSET_FAMILY
573 * <p>These definitions allow to specify the encoding of text
574 * in the char data type as defined by the platform and the compiler.
575 * It is enough to determine the code point values of "invariant characters",
576 * which are the ones shared by all encodings that are in use
577 * on a given platform.</p>
579 * <p>Those "invariant characters" should be all the uppercase and lowercase
580 * latin letters, the digits, the space, and "basic punctuation".
581 * Also, '\\n', '\\r', '\\t' should be available.</p>
583 * <p>The list of "invariant characters" is:<br>
585 * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _
588 * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p>
590 * <p>This matches the IBM Syntactic Character Set (CS 640).</p>
592 * <p>In other words, all the graphic characters in 7-bit ASCII should
593 * be safely accessible except the following:</p>
598 * ']' <right bracket>
603 * '!' <exclamation mark>
605 * '|' <vertical line>
607 * '@' <commercial at>
612 #ifdef U_CHARSET_FAMILY
613 /* Use the predefined value. */
614 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB)
615 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY
616 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__)
617 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY
619 # define U_CHARSET_FAMILY U_ASCII_FAMILY
623 * \def U_CHARSET_IS_UTF8
625 * Hardcode the default charset to UTF-8.
627 * If this is set to 1, then
628 * - ICU will assume that all non-invariant char*, StringPiece, std::string etc.
629 * contain UTF-8 text, regardless of what the system API uses
630 * - some ICU code will use fast functions like u_strFromUTF8()
631 * rather than the more general and more heavy-weight conversion API (ucnv.h)
632 * - ucnv_getDefaultName() always returns "UTF-8"
633 * - ucnv_setDefaultName() is disabled and will not change the default charset
634 * - static builds of ICU are smaller
635 * - more functionality is available with the UCONFIG_NO_CONVERSION build-time
636 * configuration option (see unicode/uconfig.h)
637 * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable
640 * @see UCONFIG_NO_CONVERSION
642 #ifdef U_CHARSET_IS_UTF8
643 /* Use the predefined value. */
644 #elif U_PLATFORM == U_PF_ANDROID || U_PLATFORM_IS_DARWIN_BASED
645 # define U_CHARSET_IS_UTF8 1
647 # define U_CHARSET_IS_UTF8 0
652 /*===========================================================================*/
653 /** @{ Information about wchar support */
654 /*===========================================================================*/
657 * \def U_HAVE_WCHAR_H
658 * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default.
662 #ifdef U_HAVE_WCHAR_H
663 /* Use the predefined value. */
664 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9
666 * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t.
667 * The type and header existed, but the library functions did not work as expected.
668 * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway.
670 # define U_HAVE_WCHAR_H 0
672 # define U_HAVE_WCHAR_H 1
676 * \def U_SIZEOF_WCHAR_T
677 * U_SIZEOF_WCHAR_T==sizeof(wchar_t)
681 #ifdef U_SIZEOF_WCHAR_T
682 /* Use the predefined value. */
683 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9)
685 * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring.
686 * Newer Mac OS X has size 4.
688 # define U_SIZEOF_WCHAR_T 1
689 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN
690 # define U_SIZEOF_WCHAR_T 2
691 #elif U_PLATFORM == U_PF_AIX
693 * AIX 6.1 information, section "Wide character data representation":
694 * "... the wchar_t datatype is 32-bit in the 64-bit environment and
695 * 16-bit in the 32-bit environment."
697 * "All locales use Unicode for their wide character code values (process code),
698 * except the IBM-eucTW codeset."
701 # define U_SIZEOF_WCHAR_T 4
703 # define U_SIZEOF_WCHAR_T 2
705 #elif U_PLATFORM == U_PF_OS390
707 * z/OS V1R11 information center, section "LP64 | ILP32":
708 * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes.
709 * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes."
712 # define U_SIZEOF_WCHAR_T 4
714 # define U_SIZEOF_WCHAR_T 2
716 #elif U_PLATFORM == U_PF_OS400
717 # if defined(__UTF32__)
719 * LOCALETYPE(*LOCALEUTF) is specified.
720 * Wide-character strings are in UTF-32,
721 * narrow-character strings are in UTF-8.
723 # define U_SIZEOF_WCHAR_T 4
724 # elif defined(__UCS2__)
726 * LOCALETYPE(*LOCALEUCS2) is specified.
727 * Wide-character strings are in UCS-2,
728 * narrow-character strings are in EBCDIC.
730 # define U_SIZEOF_WCHAR_T 2
733 * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified.
734 * Wide-character strings are in 16-bit EBCDIC,
735 * narrow-character strings are in EBCDIC.
737 # define U_SIZEOF_WCHAR_T 2
740 # define U_SIZEOF_WCHAR_T 4
743 #ifndef U_HAVE_WCSCPY
744 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H
750 * \def U_HAVE_CHAR16_T
751 * Defines whether the char16_t type is available for UTF-16
752 * and u"abc" UTF-16 string literals are supported.
753 * This is a new standard type and standard string literal syntax in C++0x
754 * but has been available in some compilers before.
757 #ifdef U_HAVE_CHAR16_T
758 /* Use the predefined value. */
762 * Visual Studio 10 (_MSC_VER>=1600) defines char16_t but
763 * does not support u"abc" string literals.
764 * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but
765 * does not support u"abc" string literals.
766 * C++11 and C11 require support for UTF-16 literals
768 # if U_CPLUSPLUS_VERSION >= 11 || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L)
769 # define U_HAVE_CHAR16_T 1
771 # define U_HAVE_CHAR16_T 0
777 * \def U_DECLARE_UTF16
778 * Do not use this macro because it is not defined on all platforms.
779 * Use the UNICODE_STRING or U_STRING_DECL macros instead.
782 #ifdef U_DECLARE_UTF16
783 /* Use the predefined value. */
784 #elif U_HAVE_CHAR16_T \
785 || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \
786 || (defined(__HP_aCC) && __HP_aCC >= 035000) \
787 || (defined(__HP_cc) && __HP_cc >= 111106)
788 # define U_DECLARE_UTF16(string) u ## string
789 #elif U_SIZEOF_WCHAR_T == 2 \
790 && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__)))
791 # define U_DECLARE_UTF16(string) L ## string
793 /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */
798 /*===========================================================================*/
799 /** @{ Symbol import-export control */
800 /*===========================================================================*/
803 /* Use the predefined value. */
804 #elif defined(U_STATIC_IMPLEMENTATION)
806 #elif defined(__GNUC__)
807 # define U_EXPORT __attribute__((visibility("default")))
808 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \
809 || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550)
810 # define U_EXPORT __global
811 /*#elif defined(__HP_aCC) || defined(__HP_cc)
812 # define U_EXPORT __declspec(dllexport)*/
813 #elif defined(_MSC_VER)
814 # define U_EXPORT __declspec(dllexport)
819 /* U_CALLCONV is releated to U_EXPORT2 */
821 /* Use the predefined value. */
822 #elif defined(_MSC_VER)
823 # define U_EXPORT2 __cdecl
829 /* Use the predefined value. */
830 #elif defined(_MSC_VER)
831 /* Windows needs to export/import data. */
832 # define U_IMPORT __declspec(dllimport)
839 * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary
840 * in callback function typedefs to make sure that the calling convention
843 * This is only used for non-ICU-API functions.
844 * When a function is a public ICU API,
845 * you must use the U_CAPI and U_EXPORT2 qualifiers.
847 * Please note, you need to use U_CALLCONV after the *.
849 * NO : "static const char U_CALLCONV *func( . . . )"
850 * YES: "static const char* U_CALLCONV func( . . . )"
854 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
855 # define U_CALLCONV __cdecl
857 # define U_CALLCONV U_EXPORT2