ICU 67.1  67.1
platform.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 ******************************************************************************
5 *
6 * Copyright (C) 1997-2016, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 ******************************************************************************
10 *
11 * FILE NAME : platform.h
12 *
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 ******************************************************************************
19 */
20 
21 #ifndef _PLATFORM_H
22 #define _PLATFORM_H
23 
24 #include "unicode/uconfig.h"
25 #include "unicode/uvernum.h"
26 
59 #ifdef U_IN_DOXYGEN
60 /*
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.
63  */
64 
65 /* None for now. */
66 #endif
67 
89 #define U_PF_UNKNOWN 0
90 
91 #define U_PF_WINDOWS 1000
92 
93 #define U_PF_MINGW 1800
94 
99 #define U_PF_CYGWIN 1900
100 /* Reserve 2000 for U_PF_UNIX? */
102 #define U_PF_HPUX 2100
103 
104 #define U_PF_SOLARIS 2600
105 
106 #define U_PF_BSD 3000
107 
108 #define U_PF_AIX 3100
109 
110 #define U_PF_IRIX 3200
111 
119 #define U_PF_DARWIN 3500
120 
121 #define U_PF_IPHONE 3550
122 
123 #define U_PF_QNX 3700
124 
125 #define U_PF_LINUX 4000
126 
132 #define U_PF_BROWSER_NATIVE_CLIENT 4020
133 
134 #define U_PF_ANDROID 4050
135 
136 #define U_PF_FUCHSIA 4100
137 /* Maximum value for Linux-based platform is 4499 */
145 #define U_PF_EMSCRIPTEN 5010
146 
147 #define U_PF_OS390 9000
148 
149 #define U_PF_OS400 9400
150 
151 #ifdef U_PLATFORM
152  /* Use the predefined value. */
153 #elif defined(__MINGW32__)
154 # define U_PLATFORM U_PF_MINGW
155 #elif defined(__CYGWIN__)
156 # define U_PLATFORM U_PF_CYGWIN
157 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
158 # define U_PLATFORM U_PF_WINDOWS
159 #elif defined(__ANDROID__)
160 # define U_PLATFORM U_PF_ANDROID
161  /* Android wchar_t support depends on the API level. */
162 # include <android/api-level.h>
163 #elif defined(__pnacl__) || defined(__native_client__)
164 # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT
165 #elif defined(__Fuchsia__)
166 # define U_PLATFORM U_PF_FUCHSIA
167 #elif defined(linux) || defined(__linux__) || defined(__linux)
168 # define U_PLATFORM U_PF_LINUX
169 #elif defined(__APPLE__) && defined(__MACH__)
170 # include <TargetConditionals.h>
171 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */
172 # define U_PLATFORM U_PF_IPHONE
173 # else
174 # define U_PLATFORM U_PF_DARWIN
175 # endif
176 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__)
177 # if defined(__FreeBSD__)
178 # include <sys/endian.h>
179 # endif
180 # define U_PLATFORM U_PF_BSD
181 #elif defined(sun) || defined(__sun)
182  /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */
183 # define U_PLATFORM U_PF_SOLARIS
184 # if defined(__GNUC__)
185  /* Solaris/GCC needs this header file to get the proper endianness. Normally, this
186  * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h
187  * is included which does not include this header file.
188  */
189 # include <sys/isa_defs.h>
190 # endif
191 #elif defined(_AIX) || defined(__TOS_AIX__)
192 # define U_PLATFORM U_PF_AIX
193 #elif defined(_hpux) || defined(hpux) || defined(__hpux)
194 # define U_PLATFORM U_PF_HPUX
195 #elif defined(sgi) || defined(__sgi)
196 # define U_PLATFORM U_PF_IRIX
197 #elif defined(__QNX__) || defined(__QNXNTO__)
198 # define U_PLATFORM U_PF_QNX
199 #elif defined(__TOS_MVS__)
200 # define U_PLATFORM U_PF_OS390
201 #elif defined(__OS400__) || defined(__TOS_OS400__)
202 # define U_PLATFORM U_PF_OS400
203 #elif defined(__EMSCRIPTEN__)
204 # define U_PLATFORM U_PF_EMSCRIPTEN
205 #else
206 # define U_PLATFORM U_PF_UNKNOWN
207 #endif
208 
215 /* Commented out because this is already set in mh-cygwin-msvc
216 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER)
217 # define CYGWINMSVC
218 #endif
219 */
220 #ifdef U_IN_DOXYGEN
221 # define CYGWINMSVC
222 #endif
223 
230 #ifdef U_PLATFORM_USES_ONLY_WIN32_API
231  /* Use the predefined value. */
232 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC)
233 # define U_PLATFORM_USES_ONLY_WIN32_API 1
234 #else
235  /* Cygwin implements POSIX. */
236 # define U_PLATFORM_USES_ONLY_WIN32_API 0
237 #endif
238 
245 #ifdef U_PLATFORM_HAS_WIN32_API
246  /* Use the predefined value. */
247 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
248 # define U_PLATFORM_HAS_WIN32_API 1
249 #else
250 # define U_PLATFORM_HAS_WIN32_API 0
251 #endif
252 
259 #ifdef U_PLATFORM_HAS_WINUWP_API
260  /* Use the predefined value. */
261 #else
262 # define U_PLATFORM_HAS_WINUWP_API 0
263 #endif
264 
271 #ifdef U_PLATFORM_IMPLEMENTS_POSIX
272  /* Use the predefined value. */
273 #elif U_PLATFORM_USES_ONLY_WIN32_API
274 # define U_PLATFORM_IMPLEMENTS_POSIX 0
275 #else
276 # define U_PLATFORM_IMPLEMENTS_POSIX 1
277 #endif
278 
284 #ifdef U_PLATFORM_IS_LINUX_BASED
285  /* Use the predefined value. */
286 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499
287 # define U_PLATFORM_IS_LINUX_BASED 1
288 #else
289 # define U_PLATFORM_IS_LINUX_BASED 0
290 #endif
291 
297 #ifdef U_PLATFORM_IS_DARWIN_BASED
298  /* Use the predefined value. */
299 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE
300 # define U_PLATFORM_IS_DARWIN_BASED 1
301 #else
302 # define U_PLATFORM_IS_DARWIN_BASED 0
303 #endif
304 
312 #ifdef U_HAVE_STDINT_H
313  /* Use the predefined value. */
314 #elif U_PLATFORM_USES_ONLY_WIN32_API
315 # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600)
316  /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */
317 # define U_HAVE_STDINT_H 1
318 # else
319 # define U_HAVE_STDINT_H 0
320 # endif
321 #elif U_PLATFORM == U_PF_SOLARIS
322  /* Solaris has inttypes.h but not stdint.h. */
323 # define U_HAVE_STDINT_H 0
324 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER)
325  /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */
326 # define U_HAVE_STDINT_H 0
327 #else
328 # define U_HAVE_STDINT_H 1
329 #endif
330 
337 #ifdef U_HAVE_INTTYPES_H
338  /* Use the predefined value. */
339 #elif U_PLATFORM == U_PF_SOLARIS
340  /* Solaris has inttypes.h but not stdint.h. */
341 # define U_HAVE_INTTYPES_H 1
342 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER)
343  /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */
344 # define U_HAVE_INTTYPES_H 1
345 #else
346  /* Most platforms have both inttypes.h and stdint.h, or neither. */
347 # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H
348 #endif
349 
350 /*===========================================================================*/
352 /*===========================================================================*/
353 
364 #ifdef __GNUC__
365 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__)
366 #else
367 # define U_GCC_MAJOR_MINOR 0
368 #endif
369 
375 #ifdef U_IS_BIG_ENDIAN
376  /* Use the predefined value. */
377 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN)
378 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN)
379 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
380  /* gcc */
381 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
382 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN)
383 # define U_IS_BIG_ENDIAN 1
384 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN)
385 # define U_IS_BIG_ENDIAN 0
386 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__)
387  /* These platforms do not appear to predefine any endianness macros. */
388 # define U_IS_BIG_ENDIAN 1
389 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0)
390  /* HPPA do not appear to predefine any endianness macros. */
391 # define U_IS_BIG_ENDIAN 1
392 #elif defined(sparc) || defined(__sparc) || defined(__sparc__)
393  /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */
394 # define U_IS_BIG_ENDIAN 1
395 #else
396 # define U_IS_BIG_ENDIAN 0
397 #endif
398 
404 #ifdef U_HAVE_PLACEMENT_NEW
405  /* Use the predefined value. */
406 #elif defined(__BORLANDC__)
407 # define U_HAVE_PLACEMENT_NEW 0
408 #else
409 # define U_HAVE_PLACEMENT_NEW 1
410 #endif
411 
418 #ifdef U_HAVE_DEBUG_LOCATION_NEW
419  /* Use the predefined value. */
420 #elif defined(_MSC_VER)
421 # define U_HAVE_DEBUG_LOCATION_NEW 1
422 #else
423 # define U_HAVE_DEBUG_LOCATION_NEW 0
424 #endif
425 
426 /* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */
427 #ifdef __has_attribute
428 # define UPRV_HAS_ATTRIBUTE(x) __has_attribute(x)
429 #else
430 # define UPRV_HAS_ATTRIBUTE(x) 0
431 #endif
432 #ifdef __has_cpp_attribute
433 # define UPRV_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
434 #else
435 # define UPRV_HAS_CPP_ATTRIBUTE(x) 0
436 #endif
437 #ifdef __has_declspec_attribute
438 # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x)
439 #else
440 # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) 0
441 #endif
442 #ifdef __has_builtin
443 # define UPRV_HAS_BUILTIN(x) __has_builtin(x)
444 #else
445 # define UPRV_HAS_BUILTIN(x) 0
446 #endif
447 #ifdef __has_feature
448 # define UPRV_HAS_FEATURE(x) __has_feature(x)
449 #else
450 # define UPRV_HAS_FEATURE(x) 0
451 #endif
452 #ifdef __has_extension
453 # define UPRV_HAS_EXTENSION(x) __has_extension(x)
454 #else
455 # define UPRV_HAS_EXTENSION(x) 0
456 #endif
457 #ifdef __has_warning
458 # define UPRV_HAS_WARNING(x) __has_warning(x)
459 #else
460 # define UPRV_HAS_WARNING(x) 0
461 #endif
462 
468 #if defined(__GNUC__) && __GNUC__>=3
469 # define U_MALLOC_ATTR __attribute__ ((__malloc__))
470 #else
471 # define U_MALLOC_ATTR
472 #endif
473 
479 #if (defined(__GNUC__) && \
480  (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \
481  UPRV_HAS_ATTRIBUTE(alloc_size)
482 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X)))
483 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y)))
484 #else
485 # define U_ALLOC_SIZE_ATTR(X)
486 # define U_ALLOC_SIZE_ATTR2(X,Y)
487 #endif
488 
495 #ifdef U_CPLUSPLUS_VERSION
496 # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus)
497 # undef U_CPLUSPLUS_VERSION
498 # define U_CPLUSPLUS_VERSION 0
499 # endif
500  /* Otherwise use the predefined value. */
501 #elif !defined(__cplusplus)
502 # define U_CPLUSPLUS_VERSION 0
503 #elif __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
504 # define U_CPLUSPLUS_VERSION 14
505 #elif __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L)
506 # define U_CPLUSPLUS_VERSION 11
507 #else
508  // C++98 or C++03
509 # define U_CPLUSPLUS_VERSION 1
510 #endif
511 
512 #if (U_PLATFORM == U_PF_AIX || U_PLATFORM == U_PF_OS390) && defined(__cplusplus) &&(U_CPLUSPLUS_VERSION < 11)
513 // add in std::nullptr_t
514 namespace std {
515  typedef decltype(nullptr) nullptr_t;
516 };
517 #endif
518 
526 #ifdef U_NOEXCEPT
527  /* Use the predefined value. */
528 #else
529 # define U_NOEXCEPT noexcept
530 #endif
531 
538 #ifndef __cplusplus
539  // Not for C.
540 #elif defined(U_FALLTHROUGH)
541  // Use the predefined value.
542 #elif defined(__clang__)
543  // Test for compiler vs. feature separately.
544  // Other compilers might choke on the feature test.
545 # if UPRV_HAS_CPP_ATTRIBUTE(clang::fallthrough) || \
546  (UPRV_HAS_FEATURE(cxx_attributes) && \
547  UPRV_HAS_WARNING("-Wimplicit-fallthrough"))
548 # define U_FALLTHROUGH [[clang::fallthrough]]
549 # endif
550 #elif defined(__GNUC__) && (__GNUC__ >= 7)
551 # define U_FALLTHROUGH __attribute__((fallthrough))
552 #endif
553 
554 #ifndef U_FALLTHROUGH
555 # define U_FALLTHROUGH
556 #endif
557 
560 /*===========================================================================*/
562 /*===========================================================================*/
563 
568 #define U_ASCII_FAMILY 0
569 
574 #define U_EBCDIC_FAMILY 1
575 
618 #ifdef U_CHARSET_FAMILY
619  /* Use the predefined value. */
620 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB)
621 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY
622 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__)
623 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY
624 #else
625 # define U_CHARSET_FAMILY U_ASCII_FAMILY
626 #endif
627 
648 #ifdef U_CHARSET_IS_UTF8
649  /* Use the predefined value. */
650 #elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \
651  U_PLATFORM == U_PF_EMSCRIPTEN
652 # define U_CHARSET_IS_UTF8 1
653 #else
654 # define U_CHARSET_IS_UTF8 0
655 #endif
656 
659 /*===========================================================================*/
661 /*===========================================================================*/
662 
669 #ifdef U_HAVE_WCHAR_H
670  /* Use the predefined value. */
671 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9
672  /*
673  * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t.
674  * The type and header existed, but the library functions did not work as expected.
675  * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway.
676  */
677 # define U_HAVE_WCHAR_H 0
678 #else
679 # define U_HAVE_WCHAR_H 1
680 #endif
681 
688 #ifdef U_SIZEOF_WCHAR_T
689  /* Use the predefined value. */
690 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9)
691  /*
692  * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring.
693  * Newer Mac OS X has size 4.
694  */
695 # define U_SIZEOF_WCHAR_T 1
696 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN
697 # define U_SIZEOF_WCHAR_T 2
698 #elif U_PLATFORM == U_PF_AIX
699  /*
700  * AIX 6.1 information, section "Wide character data representation":
701  * "... the wchar_t datatype is 32-bit in the 64-bit environment and
702  * 16-bit in the 32-bit environment."
703  * and
704  * "All locales use Unicode for their wide character code values (process code),
705  * except the IBM-eucTW codeset."
706  */
707 # ifdef __64BIT__
708 # define U_SIZEOF_WCHAR_T 4
709 # else
710 # define U_SIZEOF_WCHAR_T 2
711 # endif
712 #elif U_PLATFORM == U_PF_OS390
713  /*
714  * z/OS V1R11 information center, section "LP64 | ILP32":
715  * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes.
716  * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes."
717  */
718 # ifdef _LP64
719 # define U_SIZEOF_WCHAR_T 4
720 # else
721 # define U_SIZEOF_WCHAR_T 2
722 # endif
723 #elif U_PLATFORM == U_PF_OS400
724 # if defined(__UTF32__)
725  /*
726  * LOCALETYPE(*LOCALEUTF) is specified.
727  * Wide-character strings are in UTF-32,
728  * narrow-character strings are in UTF-8.
729  */
730 # define U_SIZEOF_WCHAR_T 4
731 # elif defined(__UCS2__)
732  /*
733  * LOCALETYPE(*LOCALEUCS2) is specified.
734  * Wide-character strings are in UCS-2,
735  * narrow-character strings are in EBCDIC.
736  */
737 # define U_SIZEOF_WCHAR_T 2
738 # else
739  /*
740  * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified.
741  * Wide-character strings are in 16-bit EBCDIC,
742  * narrow-character strings are in EBCDIC.
743  */
744 # define U_SIZEOF_WCHAR_T 2
745 # endif
746 #else
747 # define U_SIZEOF_WCHAR_T 4
748 #endif
749 
750 #ifndef U_HAVE_WCSCPY
751 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H
752 #endif
753 
764 #ifdef U_HAVE_CHAR16_T
765  /* Use the predefined value. */
766 #else
767  /*
768  * Notes:
769  * Visual Studio 2010 (_MSC_VER==1600) defines char16_t as a typedef
770  * and does not support u"abc" string literals.
771  * Visual Studio 2015 (_MSC_VER>=1900) and above adds support for
772  * both char16_t and u"abc" string literals.
773  * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but
774  * does not support u"abc" string literals.
775  * C++11 and C11 require support for UTF-16 literals
776  * TODO: Fix for plain C. Doesn't work on Mac.
777  */
778 # if U_CPLUSPLUS_VERSION >= 11 || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L)
779 # define U_HAVE_CHAR16_T 1
780 # else
781 # define U_HAVE_CHAR16_T 0
782 # endif
783 #endif
784 
792 #ifdef U_DECLARE_UTF16
793  /* Use the predefined value. */
794 #elif U_HAVE_CHAR16_T \
795  || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \
796  || (defined(__HP_aCC) && __HP_aCC >= 035000) \
797  || (defined(__HP_cc) && __HP_cc >= 111106) \
798  || (defined(U_IN_DOXYGEN))
799 # define U_DECLARE_UTF16(string) u ## string
800 #elif U_SIZEOF_WCHAR_T == 2 \
801  && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__)))
802 # define U_DECLARE_UTF16(string) L ## string
803 #else
804  /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */
805 #endif
806 
809 /*===========================================================================*/
811 /*===========================================================================*/
812 
813 #ifdef U_EXPORT
814  /* Use the predefined value. */
815 #elif defined(U_STATIC_IMPLEMENTATION)
816 # define U_EXPORT
817 #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \
818  UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport))
819 # define U_EXPORT __declspec(dllexport)
820 #elif defined(__GNUC__)
821 # define U_EXPORT __attribute__((visibility("default")))
822 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \
823  || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550)
824 # define U_EXPORT __global
825 /*#elif defined(__HP_aCC) || defined(__HP_cc)
826 # define U_EXPORT __declspec(dllexport)*/
827 #else
828 # define U_EXPORT
829 #endif
830 
831 /* U_CALLCONV is related to U_EXPORT2 */
832 #ifdef U_EXPORT2
833  /* Use the predefined value. */
834 #elif defined(_MSC_VER)
835 # define U_EXPORT2 __cdecl
836 #else
837 # define U_EXPORT2
838 #endif
839 
840 #ifdef U_IMPORT
841  /* Use the predefined value. */
842 #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \
843  UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport))
844  /* Windows needs to export/import data. */
845 # define U_IMPORT __declspec(dllimport)
846 #else
847 # define U_IMPORT
848 #endif
849 
867 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
868 # define U_CALLCONV __cdecl
869 #else
870 # define U_CALLCONV U_EXPORT2
871 #endif
872 
878 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
879 # define U_CALLCONV_FPTR U_CALLCONV
880 #else
881 # define U_CALLCONV_FPTR
882 #endif
883 /* @} */
884 
885 #endif // _PLATFORM_H
C API: definitions of ICU version numbers.
User-configurable settings.