1 /* 2 ****************************************************************************** 3 * 4 * Copyright (C) 1997-2012, International Business Machines 5 * Corporation and others. All Rights Reserved. 6 * 7 ****************************************************************************** 8 * 9 * FILE NAME : platform.h 10 * 11 * Date Name Description 12 * 05/13/98 nos Creation (content moved here from ptypes.h). 13 * 03/02/99 stephen Added AS400 support. 14 * 03/30/99 stephen Added Linux support. 15 * 04/13/99 stephen Reworked for autoconf. 16 ****************************************************************************** 17 */ 18 19 #ifndef _PLATFORM_H 20 #define _PLATFORM_H 21 22 #include "unicode/uconfig.h" 23 #include "unicode/uvernum.h" 24 25 /** 26 * \file 27 * \brief Basic types for the platform. 28 * 29 * This file used to be generated by autoconf/configure. 30 * Starting with ICU 49, platform.h is a normal source file, 31 * to simplify cross-compiling and working with non-autoconf/make build systems. 32 * 33 * When a value in this file does not work on a platform, then please 34 * try to derive it from the U_PLATFORM value 35 * (for which we might need a new value constant in rare cases) 36 * and/or from other macros that are predefined by the compiler 37 * or defined in standard (POSIX or platform or compiler) headers. 38 * 39 * As a temporary workaround, you can add an explicit <code>#define</code> for some macros 40 * before it is first tested, or add an equivalent -D macro definition 41 * to the compiler's command line. 42 * 43 * Note: Some compilers provide ways to show the predefined macros. 44 * For example, with gcc you can compile an empty .c file and have the compiler 45 * print the predefined macros with 46 * \code 47 * gcc -E -dM -x c /dev/null | sort 48 * \endcode 49 * (You can provide an actual empty .c file rather than /dev/null. 50 * <code>-x c++</code> is for C++.) 51 */ 52 53 /** 54 * Define some things so that they can be documented. 55 * @internal 56 */ 57 #ifdef U_IN_DOXYGEN 58 /* 59 * Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented. 60 * 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. 61 */ 62 63 /* None for now. */ 64 #endif 65 66 /** 67 * \def U_PLATFORM 68 * The U_PLATFORM macro defines the platform we're on. 69 * 70 * We used to define one different, value-less macro per platform. 71 * That made it hard to know the set of relevant platforms and macros, 72 * and hard to deal with variants of platforms. 73 * 74 * Starting with ICU 49, we define platforms as numeric macros, 75 * with ranges of values for related platforms and their variants. 76 * The U_PLATFORM macro is set to one of these values. 77 * 78 * Historical note from the Solaris Wikipedia article: 79 * AT&T and Sun collaborated on a project to merge the most popular Unix variants 80 * on the market at that time: BSD, System V, and Xenix. 81 * This became Unix System V Release 4 (SVR4). 82 * 83 * @internal 84 */ 85 86 /** Unknown platform. @internal */ 87 #define U_PF_UNKNOWN 0 88 /** Windows @internal */ 89 #define U_PF_WINDOWS 1000 90 /** MinGW. Windows, calls to Win32 API, but using GNU gcc and binutils. @internal */ 91 #define U_PF_MINGW 1800 92 /** 93 * Cygwin. Windows, calls to cygwin1.dll for Posix functions, 94 * using MSVC or GNU gcc and binutils. 95 * @internal 96 */ 97 #define U_PF_CYGWIN 1900 98 /* Reserve 2000 for U_PF_UNIX? */ 99 /** HP-UX is based on UNIX System V. @internal */ 100 #define U_PF_HPUX 2100 101 /** Solaris is a Unix operating system based on SVR4. @internal */ 102 #define U_PF_SOLARIS 2600 103 /** BSD is a UNIX operating system derivative. @internal */ 104 #define U_PF_BSD 3000 105 /** AIX is based on UNIX System V Releases and 4.3 BSD. @internal */ 106 #define U_PF_AIX 3100 107 /** IRIX is based on UNIX System V with BSD extensions. @internal */ 108 #define U_PF_IRIX 3200 109 /** 110 * Darwin is a POSIX-compliant operating system, composed of code developed by Apple, 111 * as well as code derived from NeXTSTEP, BSD, and other projects, 112 * built around the Mach kernel. 113 * Darwin forms the core set of components upon which Mac OS X, Apple TV, and iOS are based. 114 * (Original description modified from WikiPedia.) 115 * @internal 116 */ 117 #define U_PF_DARWIN 3500 118 /** iPhone OS (iOS) is a derivative of Mac OS X. @internal */ 119 #define U_PF_IPHONE 3550 120 /** QNX is a commercial Unix-like real-time operating system related to BSD. @internal */ 121 #define U_PF_QNX 3700 122 /** Linux is a Unix-like operating system. @internal */ 123 #define U_PF_LINUX 4000 124 /** Android is based on Linux. @internal */ 125 #define U_PF_ANDROID 4050 126 /** "Classic" Mac OS (1984-2001) @internal */ 127 #define U_PF_CLASSIC_MACOS 8000 128 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */ 129 #define U_PF_OS390 9000 130 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */ 131 #define U_PF_OS400 9400 132 133 #ifdef U_PLATFORM 134 /* Use the predefined value. */ 135 #elif defined(__MINGW32__) 136 # define U_PLATFORM U_PF_MINGW 137 #elif defined(__CYGWIN__) 138 # define U_PLATFORM U_PF_CYGWIN 139 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64) 140 # define U_PLATFORM U_PF_WINDOWS 141 #elif defined(__ANDROID__) 142 # define U_PLATFORM U_PF_ANDROID 143 /* Android wchar_t support depends on the API level. */ 144 # include <android/api-level.h> 145 #elif defined(linux) || defined(__linux__) || defined(__linux) 146 # define U_PLATFORM U_PF_LINUX 147 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__) 148 # define U_PLATFORM U_PF_BSD 149 #elif defined(sun) || defined(__sun) 150 /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */ 151 # define U_PLATFORM U_PF_SOLARIS 152 # if defined(__GNUC__) 153 /* Solaris/GCC needs this header file to get the proper endianness. Normally, this 154 * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h 155 * is included which does not include this header file. 156 */ 157 # include <sys/isa_defs.h> 158 # endif 159 #elif defined(_AIX) || defined(__TOS_AIX__) 160 # define U_PLATFORM U_PF_AIX 161 #elif defined(_hpux) || defined(hpux) || defined(__hpux) 162 # define U_PLATFORM U_PF_HPUX 163 #elif defined(sgi) || defined(__sgi) 164 # define U_PLATFORM U_PF_IRIX 165 #elif defined(__APPLE__) && defined(__MACH__) 166 # include <TargetConditionals.h> 167 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */ 168 # define U_PLATFORM U_PF_IPHONE 169 # else 170 # define U_PLATFORM U_PF_DARWIN 171 # endif 172 #elif defined(macintosh) 173 # define U_PLATFORM U_PF_CLASSIC_MACOS 174 #elif defined(__QNX__) || defined(__QNXNTO__) 175 # define U_PLATFORM U_PF_QNX 176 #elif defined(__TOS_MVS__) 177 # define U_PLATFORM U_PF_OS390 178 #elif defined(__OS400__) || defined(__TOS_OS400__) 179 # define U_PLATFORM U_PF_OS400 180 #else 181 # define U_PLATFORM U_PF_UNKNOWN 182 #endif 183 184 /** 185 * \def CYGWINMSVC 186 * Defined if this is Windows with Cygwin, but using MSVC rather than gcc. 187 * Otherwise undefined. 188 * @internal 189 */ 190 /* Commented out because this is already set in mh-cygwin-msvc 191 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER) 192 # define CYGWINMSVC 193 #endif 194 */ 195 196 /** 197 * \def U_PLATFORM_USES_ONLY_WIN32_API 198 * Defines whether the platform uses only the Win32 API. 199 * Set to 1 for Windows/MSVC and MinGW but not Cygwin. 200 * @internal 201 */ 202 #ifdef U_PLATFORM_USES_ONLY_WIN32_API 203 /* Use the predefined value. */ 204 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC) 205 # define U_PLATFORM_USES_ONLY_WIN32_API 1 206 #else 207 /* Cygwin implements POSIX. */ 208 # define U_PLATFORM_USES_ONLY_WIN32_API 0 209 #endif 210 211 /** 212 * \def U_PLATFORM_HAS_WIN32_API 213 * Defines whether the Win32 API is available on the platform. 214 * Set to 1 for Windows/MSVC, MinGW and Cygwin. 215 * @internal 216 */ 217 #ifdef U_PLATFORM_HAS_WIN32_API 218 /* Use the predefined value. */ 219 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN 220 # define U_PLATFORM_HAS_WIN32_API 1 221 #else 222 # define U_PLATFORM_HAS_WIN32_API 0 223 #endif 224 225 /** 226 * \def U_PLATFORM_IMPLEMENTS_POSIX 227 * Defines whether the platform implements (most of) the POSIX API. 228 * Set to 1 for Cygwin and most other platforms. 229 * @internal 230 */ 231 #ifdef U_PLATFORM_IMPLEMENTS_POSIX 232 /* Use the predefined value. */ 233 #elif U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_CLASSIC_MACOS 234 # define U_PLATFORM_IMPLEMENTS_POSIX 0 235 #else 236 # define U_PLATFORM_IMPLEMENTS_POSIX 1 237 #endif 238 239 /** 240 * \def U_PLATFORM_IS_LINUX_BASED 241 * Defines whether the platform is Linux or one of its derivatives. 242 * @internal 243 */ 244 #ifdef U_PLATFORM_IS_LINUX_BASED 245 /* Use the predefined value. */ 246 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= U_PF_ANDROID 247 # define U_PLATFORM_IS_LINUX_BASED 1 248 #else 249 # define U_PLATFORM_IS_LINUX_BASED 0 250 #endif 251 252 /** 253 * \def U_PLATFORM_IS_DARWIN_BASED 254 * Defines whether the platform is Darwin or one of its derivatives. 255 * @internal 256 */ 257 #ifdef U_PLATFORM_IS_DARWIN_BASED 258 /* Use the predefined value. */ 259 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE 260 # define U_PLATFORM_IS_DARWIN_BASED 1 261 #else 262 # define U_PLATFORM_IS_DARWIN_BASED 0 263 #endif 264 265 /** 266 * \def U_HAVE_STDINT_H 267 * Defines whether stdint.h is available. It is a C99 standard header. 268 * We used to include inttypes.h which includes stdint.h but we usually do not need 269 * the additional definitions from inttypes.h. 270 * @internal 271 */ 272 #ifdef U_HAVE_STDINT_H 273 /* Use the predefined value. */ 274 #elif U_PLATFORM_USES_ONLY_WIN32_API 275 # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600) 276 /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */ 277 # define U_HAVE_STDINT_H 1 278 # else 279 # define U_HAVE_STDINT_H 0 280 # endif 281 #elif U_PLATFORM == U_PF_SOLARIS 282 /* Solaris has inttypes.h but not stdint.h. */ 283 # define U_HAVE_STDINT_H 0 284 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 285 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 286 # define U_HAVE_STDINT_H 0 287 #else 288 # define U_HAVE_STDINT_H 1 289 #endif 290 291 /** 292 * \def U_HAVE_INTTYPES_H 293 * Defines whether inttypes.h is available. It is a C99 standard header. 294 * We include inttypes.h where it is available but stdint.h is not. 295 * @internal 296 */ 297 #ifdef U_HAVE_INTTYPES_H 298 /* Use the predefined value. */ 299 #elif U_PLATFORM == U_PF_SOLARIS 300 /* Solaris has inttypes.h but not stdint.h. */ 301 # define U_HAVE_INTTYPES_H 1 302 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 303 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 304 # define U_HAVE_INTTYPES_H 1 305 #else 306 /* Most platforms have both inttypes.h and stdint.h, or neither. */ 307 # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H 308 #endif 309 310 /** 311 * \def U_IOSTREAM_SOURCE 312 * Defines what support for C++ streams is available. 313 * 314 * If U_IOSTREAM_SOURCE is set to 199711, then <iostream> is available 315 * (the ISO/IEC C++ FDIS was published in November 1997), and then 316 * one should qualify streams using the std namespace in ICU header 317 * files. 318 * Starting with ICU 49, this is the only supported version. 319 * 320 * If U_IOSTREAM_SOURCE is set to 198506, then <iostream.h> is 321 * available instead (in June 1985 Stroustrup published 322 * "An Extensible I/O Facility for C++" at the summer USENIX conference). 323 * Starting with ICU 49, this version is not supported any more. 324 * 325 * If U_IOSTREAM_SOURCE is 0 (or any value less than 199711), 326 * then C++ streams are not available and 327 * support for them will be silently suppressed in ICU. 328 * 329 * @internal 330 */ 331 #ifndef U_IOSTREAM_SOURCE 332 #define U_IOSTREAM_SOURCE 199711 333 #endif 334 335 /** 336 * \def U_HAVE_STD_STRING 337 * Defines whether the standard C++ (STL) <string> header is available. 338 * @internal 339 */ 340 #ifdef U_HAVE_STD_STRING 341 /* Use the predefined value. */ 342 #elif U_PLATFORM == U_PF_ANDROID 343 # define U_HAVE_STD_STRING 0 344 #else 345 # define U_HAVE_STD_STRING 1 346 #endif 347 348 /*===========================================================================*/ 349 /** @{ Compiler and environment features */ 350 /*===========================================================================*/ 351 352 /** 353 * \def U_GCC_MAJOR_MINOR 354 * Indicates whether the compiler is gcc (test for != 0), 355 * and if so, contains its major (times 100) and minor version numbers. 356 * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0. 357 * 358 * For example, for testing for whether we have gcc, and whether it's 4.6 or higher, 359 * use "#if U_GCC_MAJOR_MINOR >= 406". 360 * @internal 361 */ 362 #ifdef __GNUC__ 363 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__) 364 #else 365 # define U_GCC_MAJOR_MINOR 0 366 #endif 367 368 /** 369 * \def U_IS_BIG_ENDIAN 370 * Determines the endianness of the platform. 371 * @internal 372 */ 373 #ifdef U_IS_BIG_ENDIAN 374 /* Use the predefined value. */ 375 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN) 376 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN) 377 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) 378 /* gcc */ 379 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) 380 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) 381 # define U_IS_BIG_ENDIAN 1 382 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN) 383 # define U_IS_BIG_ENDIAN 0 384 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__) 385 /* These platforms do not appear to predefine any endianness macros. */ 386 # define U_IS_BIG_ENDIAN 1 387 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) 388 /* HPPA do not appear to predefine any endianness macros. */ 389 # define U_IS_BIG_ENDIAN 1 390 #elif defined(sparc) || defined(__sparc) || defined(__sparc__) 391 /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */ 392 # define U_IS_BIG_ENDIAN 1 393 #else 394 # define U_IS_BIG_ENDIAN 0 395 #endif 396 397 /** 398 * \def U_HAVE_PLACEMENT_NEW 399 * Determines whether to override placement new and delete for STL. 400 * @stable ICU 2.6 401 */ 402 #ifdef U_HAVE_PLACEMENT_NEW 403 /* Use the predefined value. */ 404 #elif defined(__BORLANDC__) 405 # define U_HAVE_PLACEMENT_NEW 0 406 #else 407 # define U_HAVE_PLACEMENT_NEW 1 408 #endif 409 410 /** 411 * \def U_HAVE_DEBUG_LOCATION_NEW 412 * Define this to define the MFC debug version of the operator new. 413 * 414 * @stable ICU 3.4 415 */ 416 #ifdef U_HAVE_DEBUG_LOCATION_NEW 417 /* Use the predefined value. */ 418 #elif defined(_MSC_VER) 419 # define U_HAVE_DEBUG_LOCATION_NEW 1 420 #else 421 # define U_HAVE_DEBUG_LOCATION_NEW 0 422 #endif 423 424 /* Compatibility with non clang compilers */ 425 #ifndef __has_attribute 426 # define __has_attribute(x) 0 427 #endif 428 429 /** 430 * \def U_MALLOC_ATTR 431 * Attribute to mark functions as malloc-like 432 * @internal 433 */ 434 #if defined(__GNUC__) && __GNUC__>=3 435 # define U_MALLOC_ATTR __attribute__ ((__malloc__)) 436 #else 437 # define U_MALLOC_ATTR 438 #endif 439 440 /** 441 * \def U_ALLOC_SIZE_ATTR 442 * Attribute to specify the size of the allocated buffer for malloc-like functions 443 * @internal 444 */ 445 #if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || __has_attribute(alloc_size) 446 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X))) 447 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y))) 448 #else 449 # define U_ALLOC_SIZE_ATTR(X) 450 # define U_ALLOC_SIZE_ATTR2(X,Y) 451 #endif 452 453 /** @} */ 454 455 /*===========================================================================*/ 456 /** @{ Character data types */ 457 /*===========================================================================*/ 458 459 /** 460 * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform. 461 * @stable ICU 2.0 462 */ 463 #define U_ASCII_FAMILY 0 464 465 /** 466 * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform. 467 * @stable ICU 2.0 468 */ 469 #define U_EBCDIC_FAMILY 1 470 471 /** 472 * \def U_CHARSET_FAMILY 473 * 474 * <p>These definitions allow to specify the encoding of text 475 * in the char data type as defined by the platform and the compiler. 476 * It is enough to determine the code point values of "invariant characters", 477 * which are the ones shared by all encodings that are in use 478 * on a given platform.</p> 479 * 480 * <p>Those "invariant characters" should be all the uppercase and lowercase 481 * latin letters, the digits, the space, and "basic punctuation". 482 * Also, '\\n', '\\r', '\\t' should be available.</p> 483 * 484 * <p>The list of "invariant characters" is:<br> 485 * \code 486 * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _ 487 * \endcode 488 * <br> 489 * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p> 490 * 491 * <p>This matches the IBM Syntactic Character Set (CS 640).</p> 492 * 493 * <p>In other words, all the graphic characters in 7-bit ASCII should 494 * be safely accessible except the following:</p> 495 * 496 * \code 497 * '\' <backslash> 498 * '[' <left bracket> 499 * ']' <right bracket> 500 * '{' <left brace> 501 * '}' <right brace> 502 * '^' <circumflex> 503 * '~' <tilde> 504 * '!' <exclamation mark> 505 * '#' <number sign> 506 * '|' <vertical line> 507 * '$' <dollar sign> 508 * '@' <commercial at> 509 * '`' <grave accent> 510 * \endcode 511 * @stable ICU 2.0 512 */ 513 #ifdef U_CHARSET_FAMILY 514 /* Use the predefined value. */ 515 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB) 516 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 517 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__) 518 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 519 #else 520 # define U_CHARSET_FAMILY U_ASCII_FAMILY 521 #endif 522 523 /** 524 * \def U_CHARSET_IS_UTF8 525 * 526 * Hardcode the default charset to UTF-8. 527 * 528 * If this is set to 1, then 529 * - ICU will assume that all non-invariant char*, StringPiece, std::string etc. 530 * contain UTF-8 text, regardless of what the system API uses 531 * - some ICU code will use fast functions like u_strFromUTF8() 532 * rather than the more general and more heavy-weight conversion API (ucnv.h) 533 * - ucnv_getDefaultName() always returns "UTF-8" 534 * - ucnv_setDefaultName() is disabled and will not change the default charset 535 * - static builds of ICU are smaller 536 * - more functionality is available with the UCONFIG_NO_CONVERSION build-time 537 * configuration option (see unicode/uconfig.h) 538 * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable 539 * 540 * @stable ICU 4.2 541 * @see UCONFIG_NO_CONVERSION 542 */ 543 #ifdef U_CHARSET_IS_UTF8 544 /* Use the predefined value. */ 545 #elif U_PLATFORM == U_PF_ANDROID || U_PLATFORM_IS_DARWIN_BASED 546 # define U_CHARSET_IS_UTF8 1 547 #else 548 # define U_CHARSET_IS_UTF8 0 549 #endif 550 551 /** @} */ 552 553 /*===========================================================================*/ 554 /** @{ Information about wchar support */ 555 /*===========================================================================*/ 556 557 /** 558 * \def U_HAVE_WCHAR_H 559 * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default. 560 * 561 * @stable ICU 2.0 562 */ 563 #ifdef U_HAVE_WCHAR_H 564 /* Use the predefined value. */ 565 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9 566 /* 567 * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t. 568 * The type and header existed, but the library functions did not work as expected. 569 * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway. 570 */ 571 # define U_HAVE_WCHAR_H 0 572 #else 573 # define U_HAVE_WCHAR_H 1 574 #endif 575 576 /** 577 * \def U_SIZEOF_WCHAR_T 578 * U_SIZEOF_WCHAR_T==sizeof(wchar_t) 579 * 580 * @stable ICU 2.0 581 */ 582 #ifdef U_SIZEOF_WCHAR_T 583 /* Use the predefined value. */ 584 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9) || U_PLATFORM == U_PF_CLASSIC_MACOS 585 /* 586 * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring. 587 * Newer Mac OS X has size 4. 588 */ 589 # define U_SIZEOF_WCHAR_T 1 590 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN 591 # define U_SIZEOF_WCHAR_T 2 592 #elif U_PLATFORM == U_PF_AIX 593 /* 594 * AIX 6.1 information, section "Wide character data representation": 595 * "... the wchar_t datatype is 32-bit in the 64-bit environment and 596 * 16-bit in the 32-bit environment." 597 * and 598 * "All locales use Unicode for their wide character code values (process code), 599 * except the IBM-eucTW codeset." 600 */ 601 # ifdef __64BIT__ 602 # define U_SIZEOF_WCHAR_T 4 603 # else 604 # define U_SIZEOF_WCHAR_T 2 605 # endif 606 #elif U_PLATFORM == U_PF_OS390 607 /* 608 * z/OS V1R11 information center, section "LP64 | ILP32": 609 * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes. 610 * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes." 611 */ 612 # ifdef _LP64 613 # define U_SIZEOF_WCHAR_T 4 614 # else 615 # define U_SIZEOF_WCHAR_T 2 616 # endif 617 #elif U_PLATFORM == U_PF_OS400 618 # if defined(__UTF32__) 619 /* 620 * LOCALETYPE(*LOCALEUTF) is specified. 621 * Wide-character strings are in UTF-32, 622 * narrow-character strings are in UTF-8. 623 */ 624 # define U_SIZEOF_WCHAR_T 4 625 # elif defined(__UCS2__) 626 /* 627 * LOCALETYPE(*LOCALEUCS2) is specified. 628 * Wide-character strings are in UCS-2, 629 * narrow-character strings are in EBCDIC. 630 */ 631 # define U_SIZEOF_WCHAR_T 2 632 #else 633 /* 634 * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified. 635 * Wide-character strings are in 16-bit EBCDIC, 636 * narrow-character strings are in EBCDIC. 637 */ 638 # define U_SIZEOF_WCHAR_T 2 639 # endif 640 #else 641 # define U_SIZEOF_WCHAR_T 4 642 #endif 643 644 #ifndef U_HAVE_WCSCPY 645 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H 646 #endif 647 648 /** @} */ 649 650 /** 651 * \def U_HAVE_CHAR16_T 652 * Defines whether the char16_t type is available for UTF-16 653 * and u"abc" UTF-16 string literals are supported. 654 * This is a new standard type and standard string literal syntax in C++0x 655 * but has been available in some compilers before. 656 * @internal 657 */ 658 #ifdef U_HAVE_CHAR16_T 659 /* Use the predefined value. */ 660 #else 661 /* 662 * Notes: 663 * Visual Studio 10 (_MSC_VER>=1600) defines char16_t but 664 * does not support u"abc" string literals. 665 * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but 666 * does not support u"abc" string literals. 667 * C++11 and C11 require support for UTF-16 literals 668 */ 669 # if (defined(__cplusplus) && __cplusplus >= 201103L) || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) 670 # define U_HAVE_CHAR16_T 1 671 # else 672 # define U_HAVE_CHAR16_T 0 673 # endif 674 #endif 675 676 /** 677 * @{ 678 * \def U_DECLARE_UTF16 679 * Do not use this macro because it is not defined on all platforms. 680 * Use the UNICODE_STRING or U_STRING_DECL macros instead. 681 * @internal 682 */ 683 #ifdef U_DECLARE_UTF16 684 /* Use the predefined value. */ 685 #elif U_HAVE_CHAR16_T \ 686 || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \ 687 || (defined(__HP_aCC) && __HP_aCC >= 035000) \ 688 || (defined(__HP_cc) && __HP_cc >= 111106) 689 # define U_DECLARE_UTF16(string) u ## string 690 #elif U_SIZEOF_WCHAR_T == 2 \ 691 && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__))) 692 # define U_DECLARE_UTF16(string) L ## string 693 #else 694 /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */ 695 #endif 696 697 /** @} */ 698 699 /*===========================================================================*/ 700 /** @{ Symbol import-export control */ 701 /*===========================================================================*/ 702 703 #ifdef U_EXPORT 704 /* Use the predefined value. */ 705 #elif defined(U_STATIC_IMPLEMENTATION) 706 # define U_EXPORT 707 #elif defined(__GNUC__) 708 # define U_EXPORT __attribute__((visibility("default"))) 709 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \ 710 || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550) 711 # define U_EXPORT __global 712 /*#elif defined(__HP_aCC) || defined(__HP_cc) 713 # define U_EXPORT __declspec(dllexport)*/ 714 #elif defined(_MSC_VER) 715 # define U_EXPORT __declspec(dllexport) 716 #else 717 # define U_EXPORT 718 #endif 719 720 /* U_CALLCONV is releated to U_EXPORT2 */ 721 #ifdef U_EXPORT2 722 /* Use the predefined value. */ 723 #elif defined(_MSC_VER) 724 # define U_EXPORT2 __cdecl 725 #else 726 # define U_EXPORT2 727 #endif 728 729 #ifdef U_IMPORT 730 /* Use the predefined value. */ 731 #elif defined(_MSC_VER) 732 /* Windows needs to export/import data. */ 733 # define U_IMPORT __declspec(dllimport) 734 #else 735 # define U_IMPORT 736 #endif 737 738 /** 739 * \def U_CALLCONV 740 * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary 741 * in callback function typedefs to make sure that the calling convention 742 * is compatible. 743 * 744 * This is only used for non-ICU-API functions. 745 * When a function is a public ICU API, 746 * you must use the U_CAPI and U_EXPORT2 qualifiers. 747 * @stable ICU 2.0 748 */ 749 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 750 # define U_CALLCONV __cdecl 751 #else 752 # define U_CALLCONV U_EXPORT2 753 #endif 754 755 /* @} */ 756 757 #endif 758
