/src/freetype/include/freetype/config/ftconfig.h
C++ Header | 563 lines | 258 code | 140 blank | 165 comment | 23 complexity | e0f2c3ccbade72118d4750a56b8031ab MD5 | raw file
1/***************************************************************************/ 2/* */ 3/* ftconfig.h */ 4/* */ 5/* ANSI-specific configuration file (specification only). */ 6/* */ 7/* Copyright 1996-2004, 2006-2008, 2010-2011 by */ 8/* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9/* */ 10/* This file is part of the FreeType project, and may only be used, */ 11/* modified, and distributed under the terms of the FreeType project */ 12/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13/* this file you indicate that you have read the license and */ 14/* understand and accept it fully. */ 15/* */ 16/***************************************************************************/ 17 18 19 /*************************************************************************/ 20 /* */ 21 /* This header file contains a number of macro definitions that are used */ 22 /* by the rest of the engine. Most of the macros here are automatically */ 23 /* determined at compile time, and you should not need to change it to */ 24 /* port FreeType, except to compile the library with a non-ANSI */ 25 /* compiler. */ 26 /* */ 27 /* Note however that if some specific modifications are needed, we */ 28 /* advise you to place a modified copy in your build directory. */ 29 /* */ 30 /* The build directory is usually `freetype/builds/<system>', and */ 31 /* contains system-specific files that are always included first when */ 32 /* building the library. */ 33 /* */ 34 /* This ANSI version should stay in `include/freetype/config'. */ 35 /* */ 36 /*************************************************************************/ 37 38#ifndef __FTCONFIG_H__ 39#define __FTCONFIG_H__ 40 41#include <ft2build.h> 42#include FT_CONFIG_OPTIONS_H 43#include FT_CONFIG_STANDARD_LIBRARY_H 44 45 46FT_BEGIN_HEADER 47 48 49 /*************************************************************************/ 50 /* */ 51 /* PLATFORM-SPECIFIC CONFIGURATION MACROS */ 52 /* */ 53 /* These macros can be toggled to suit a specific system. The current */ 54 /* ones are defaults used to compile FreeType in an ANSI C environment */ 55 /* (16bit compilers are also supported). Copy this file to your own */ 56 /* `freetype/builds/<system>' directory, and edit it to port the engine. */ 57 /* */ 58 /*************************************************************************/ 59 60 61 /* There are systems (like the Texas Instruments 'C54x) where a `char' */ 62 /* has 16 bits. ANSI C says that sizeof(char) is always 1. Since an */ 63 /* `int' has 16 bits also for this system, sizeof(int) gives 1 which */ 64 /* is probably unexpected. */ 65 /* */ 66 /* `CHAR_BIT' (defined in limits.h) gives the number of bits in a */ 67 /* `char' type. */ 68 69#ifndef FT_CHAR_BIT 70#define FT_CHAR_BIT CHAR_BIT 71#endif 72 73 74 /* The size of an `int' type. */ 75#if FT_UINT_MAX == 0xFFFFUL 76#define FT_SIZEOF_INT (16 / FT_CHAR_BIT) 77#elif FT_UINT_MAX == 0xFFFFFFFFUL 78#define FT_SIZEOF_INT (32 / FT_CHAR_BIT) 79#elif FT_UINT_MAX > 0xFFFFFFFFUL && FT_UINT_MAX == 0xFFFFFFFFFFFFFFFFUL 80#define FT_SIZEOF_INT (64 / FT_CHAR_BIT) 81#else 82#error "Unsupported size of `int' type!" 83#endif 84 85 /* The size of a `long' type. A five-byte `long' (as used e.g. on the */ 86 /* DM642) is recognized but avoided. */ 87#if FT_ULONG_MAX == 0xFFFFFFFFUL 88#define FT_SIZEOF_LONG (32 / FT_CHAR_BIT) 89#elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFUL 90#define FT_SIZEOF_LONG (32 / FT_CHAR_BIT) 91#elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFFFFFFFUL 92#define FT_SIZEOF_LONG (64 / FT_CHAR_BIT) 93#else 94#error "Unsupported size of `long' type!" 95#endif 96 97 98 /* FT_UNUSED is a macro used to indicate that a given parameter is not */ 99 /* used -- this is only used to get rid of unpleasant compiler warnings */ 100#ifndef FT_UNUSED 101#define FT_UNUSED( arg ) ( (arg) = (arg) ) 102#endif 103 104 105 /*************************************************************************/ 106 /* */ 107 /* AUTOMATIC CONFIGURATION MACROS */ 108 /* */ 109 /* These macros are computed from the ones defined above. Don't touch */ 110 /* their definition, unless you know precisely what you are doing. No */ 111 /* porter should need to mess with them. */ 112 /* */ 113 /*************************************************************************/ 114 115 116 /*************************************************************************/ 117 /* */ 118 /* Mac support */ 119 /* */ 120 /* This is the only necessary change, so it is defined here instead */ 121 /* providing a new configuration file. */ 122 /* */ 123#if defined( __APPLE__ ) || ( defined( __MWERKS__ ) && defined( macintosh ) ) 124 /* no Carbon frameworks for 64bit 10.4.x */ 125 /* AvailabilityMacros.h is available since Mac OS X 10.2, */ 126 /* so guess the system version by maximum errno before inclusion */ 127#include <errno.h> 128#ifdef ECANCELED /* defined since 10.2 */ 129#include "AvailabilityMacros.h" 130#endif 131#if defined( __LP64__ ) && \ 132 ( MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 ) 133#undef FT_MACINTOSH 134#endif 135 136#elif defined( __SC__ ) || defined( __MRC__ ) 137 /* Classic MacOS compilers */ 138#include "ConditionalMacros.h" 139#if TARGET_OS_MAC 140#define FT_MACINTOSH 1 141#endif 142 143#endif 144 145 146 /*************************************************************************/ 147 /* */ 148 /* <Section> */ 149 /* basic_types */ 150 /* */ 151 /*************************************************************************/ 152 153 154 /*************************************************************************/ 155 /* */ 156 /* <Type> */ 157 /* FT_Int16 */ 158 /* */ 159 /* <Description> */ 160 /* A typedef for a 16bit signed integer type. */ 161 /* */ 162 typedef signed short FT_Int16; 163 164 165 /*************************************************************************/ 166 /* */ 167 /* <Type> */ 168 /* FT_UInt16 */ 169 /* */ 170 /* <Description> */ 171 /* A typedef for a 16bit unsigned integer type. */ 172 /* */ 173 typedef unsigned short FT_UInt16; 174 175 /* */ 176 177 178 /* this #if 0 ... #endif clause is for documentation purposes */ 179#if 0 180 181 /*************************************************************************/ 182 /* */ 183 /* <Type> */ 184 /* FT_Int32 */ 185 /* */ 186 /* <Description> */ 187 /* A typedef for a 32bit signed integer type. The size depends on */ 188 /* the configuration. */ 189 /* */ 190 typedef signed XXX FT_Int32; 191 192 193 /*************************************************************************/ 194 /* */ 195 /* <Type> */ 196 /* FT_UInt32 */ 197 /* */ 198 /* A typedef for a 32bit unsigned integer type. The size depends on */ 199 /* the configuration. */ 200 /* */ 201 typedef unsigned XXX FT_UInt32; 202 203 /* */ 204 205#endif 206 207#if FT_SIZEOF_INT == (32 / FT_CHAR_BIT) 208 209 typedef signed int FT_Int32; 210 typedef unsigned int FT_UInt32; 211 212#elif FT_SIZEOF_LONG == (32 / FT_CHAR_BIT) 213 214 typedef signed long FT_Int32; 215 typedef unsigned long FT_UInt32; 216 217#else 218#error "no 32bit type found -- please check your configuration files" 219#endif 220 221 222 /* look up an integer type that is at least 32 bits */ 223#if FT_SIZEOF_INT >= (32 / FT_CHAR_BIT) 224 225 typedef int FT_Fast; 226 typedef unsigned int FT_UFast; 227 228#elif FT_SIZEOF_LONG >= (32 / FT_CHAR_BIT) 229 230 typedef long FT_Fast; 231 typedef unsigned long FT_UFast; 232 233#endif 234 235 236 /* determine whether we have a 64-bit int type for platforms without */ 237 /* Autoconf */ 238#if FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) 239 240 /* FT_LONG64 must be defined if a 64-bit type is available */ 241#define FT_LONG64 242#define FT_INT64 long 243 244#elif defined( _MSC_VER ) && _MSC_VER >= 900 /* Visual C++ (and Intel C++) */ 245 246 /* this compiler provides the __int64 type */ 247#define FT_LONG64 248#define FT_INT64 __int64 249 250#elif defined( __BORLANDC__ ) /* Borland C++ */ 251 252 /* XXXX: We should probably check the value of __BORLANDC__ in order */ 253 /* to test the compiler version. */ 254 255 /* this compiler provides the __int64 type */ 256#define FT_LONG64 257#define FT_INT64 __int64 258 259#elif defined( __WATCOMC__ ) /* Watcom C++ */ 260 261 /* Watcom doesn't provide 64-bit data types */ 262 263#elif defined( __MWERKS__ ) /* Metrowerks CodeWarrior */ 264 265#define FT_LONG64 266#define FT_INT64 long long int 267 268#elif defined( __GNUC__ ) 269 270 /* GCC provides the `long long' type */ 271#define FT_LONG64 272#define FT_INT64 long long int 273 274#endif /* FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) */ 275 276 277 /*************************************************************************/ 278 /* */ 279 /* A 64-bit data type will create compilation problems if you compile */ 280 /* in strict ANSI mode. To avoid them, we disable its use if __STDC__ */ 281 /* is defined. You can however ignore this rule by defining the */ 282 /* FT_CONFIG_OPTION_FORCE_INT64 configuration macro. */ 283 /* */ 284#if defined( FT_LONG64 ) && !defined( FT_CONFIG_OPTION_FORCE_INT64 ) 285 286#ifdef __STDC__ 287 288 /* undefine the 64-bit macros in strict ANSI compilation mode */ 289#undef FT_LONG64 290#undef FT_INT64 291 292#endif /* __STDC__ */ 293 294#endif /* FT_LONG64 && !FT_CONFIG_OPTION_FORCE_INT64 */ 295 296 297#define FT_BEGIN_STMNT do { 298#define FT_END_STMNT } while ( 0 ) 299#define FT_DUMMY_STMNT FT_BEGIN_STMNT FT_END_STMNT 300 301 302#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER 303 /* Provide assembler fragments for performance-critical functions. */ 304 /* These must be defined `static __inline__' with GCC. */ 305 306#if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */ 307#define FT_MULFIX_ASSEMBLER FT_MulFix_arm 308 309 /* documentation is in freetype.h */ 310 311 static __inline FT_Int32 312 FT_MulFix_arm( FT_Int32 a, 313 FT_Int32 b ) 314 { 315 register FT_Int32 t, t2; 316 317 318 __asm 319 { 320 smull t2, t, b, a /* (lo=t2,hi=t) = a*b */ 321 mov a, t, asr #31 /* a = (hi >> 31) */ 322 add a, a, #0x8000 /* a += 0x8000 */ 323 adds t2, t2, a /* t2 += a */ 324 adc t, t, #0 /* t += carry */ 325 mov a, t2, lsr #16 /* a = t2 >> 16 */ 326 orr a, a, t, lsl #16 /* a |= t << 16 */ 327 } 328 return a; 329 } 330 331#endif /* __CC_ARM || __ARMCC__ */ 332 333 334#ifdef __GNUC__ 335 336#if defined( __arm__ ) && !defined( __thumb__ ) && \ 337 !( defined( __CC_ARM ) || defined( __ARMCC__ ) ) 338#define FT_MULFIX_ASSEMBLER FT_MulFix_arm 339 340 /* documentation is in freetype.h */ 341 342 static __inline__ FT_Int32 343 FT_MulFix_arm( FT_Int32 a, 344 FT_Int32 b ) 345 { 346 register FT_Int32 t, t2; 347 348 349 __asm__ __volatile__ ( 350 "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */ 351 "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */ 352 "add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */ 353 "adds %1, %1, %0\n\t" /* %1 += %0 */ 354 "adc %2, %2, #0\n\t" /* %2 += carry */ 355 "mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */ 356 "orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */ 357 : "=r"(a), "=&r"(t2), "=&r"(t) 358 : "r"(a), "r"(b) ); 359 return a; 360 } 361 362#endif /* __arm__ && !__thumb__ && !( __CC_ARM || __ARMCC__ ) */ 363 364#if defined( __i386__ ) 365#define FT_MULFIX_ASSEMBLER FT_MulFix_i386 366 367 /* documentation is in freetype.h */ 368 369 static __inline__ FT_Int32 370 FT_MulFix_i386( FT_Int32 a, 371 FT_Int32 b ) 372 { 373 register FT_Int32 result; 374 375 376 __asm__ __volatile__ ( 377 "imul %%edx\n" 378 "movl %%edx, %%ecx\n" 379 "sarl $31, %%ecx\n" 380 "addl $0x8000, %%ecx\n" 381 "addl %%ecx, %%eax\n" 382 "adcl $0, %%edx\n" 383 "shrl $16, %%eax\n" 384 "shll $16, %%edx\n" 385 "addl %%edx, %%eax\n" 386 : "=a"(result), "=d"(b) 387 : "a"(a), "d"(b) 388 : "%ecx", "cc" ); 389 return result; 390 } 391 392#endif /* i386 */ 393 394#endif /* __GNUC__ */ 395 396 397#ifdef _MSC_VER /* Visual C++ */ 398 399#ifdef _M_IX86 400 401#define FT_MULFIX_ASSEMBLER FT_MulFix_i386 402 403 /* documentation is in freetype.h */ 404 405 static __inline FT_Int32 406 FT_MulFix_i386( FT_Int32 a, 407 FT_Int32 b ) 408 { 409 register FT_Int32 result; 410 411 __asm 412 { 413 mov eax, a 414 mov edx, b 415 imul edx 416 mov ecx, edx 417 sar ecx, 31 418 add ecx, 8000h 419 add eax, ecx 420 adc edx, 0 421 shr eax, 16 422 shl edx, 16 423 add eax, edx 424 mov result, eax 425 } 426 return result; 427 } 428 429#endif /* _M_IX86 */ 430 431#endif /* _MSC_VER */ 432 433#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */ 434 435 436#ifdef FT_CONFIG_OPTION_INLINE_MULFIX 437#ifdef FT_MULFIX_ASSEMBLER 438#define FT_MULFIX_INLINED FT_MULFIX_ASSEMBLER 439#endif 440#endif 441 442 443#ifdef FT_MAKE_OPTION_SINGLE_OBJECT 444 445#define FT_LOCAL( x ) static x 446#define FT_LOCAL_DEF( x ) static x 447 448#else 449 450#ifdef __cplusplus 451#define FT_LOCAL( x ) extern "C" x 452#define FT_LOCAL_DEF( x ) extern "C" x 453#else 454#define FT_LOCAL( x ) extern x 455#define FT_LOCAL_DEF( x ) x 456#endif 457 458#endif /* FT_MAKE_OPTION_SINGLE_OBJECT */ 459 460 461#ifndef FT_BASE 462 463#ifdef __cplusplus 464#define FT_BASE( x ) extern "C" x 465#else 466#define FT_BASE( x ) extern x 467#endif 468 469#endif /* !FT_BASE */ 470 471 472#ifndef FT_BASE_DEF 473 474#ifdef __cplusplus 475#define FT_BASE_DEF( x ) x 476#else 477#define FT_BASE_DEF( x ) x 478#endif 479 480#endif /* !FT_BASE_DEF */ 481 482 483#ifndef FT_EXPORT 484 485#ifdef __cplusplus 486#define FT_EXPORT( x ) extern "C" x 487#else 488#define FT_EXPORT( x ) extern x 489#endif 490 491#endif /* !FT_EXPORT */ 492 493 494#ifndef FT_EXPORT_DEF 495 496#ifdef __cplusplus 497#define FT_EXPORT_DEF( x ) extern "C" x 498#else 499#define FT_EXPORT_DEF( x ) extern x 500#endif 501 502#endif /* !FT_EXPORT_DEF */ 503 504 505#ifndef FT_EXPORT_VAR 506 507#ifdef __cplusplus 508#define FT_EXPORT_VAR( x ) extern "C" x 509#else 510#define FT_EXPORT_VAR( x ) extern x 511#endif 512 513#endif /* !FT_EXPORT_VAR */ 514 515 /* The following macros are needed to compile the library with a */ 516 /* C++ compiler and with 16bit compilers. */ 517 /* */ 518 519 /* This is special. Within C++, you must specify `extern "C"' for */ 520 /* functions which are used via function pointers, and you also */ 521 /* must do that for structures which contain function pointers to */ 522 /* assure C linkage -- it's not possible to have (local) anonymous */ 523 /* functions which are accessed by (global) function pointers. */ 524 /* */ 525 /* */ 526 /* FT_CALLBACK_DEF is used to _define_ a callback function. */ 527 /* */ 528 /* FT_CALLBACK_TABLE is used to _declare_ a constant variable that */ 529 /* contains pointers to callback functions. */ 530 /* */ 531 /* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable */ 532 /* that contains pointers to callback functions. */ 533 /* */ 534 /* */ 535 /* Some 16bit compilers have to redefine these macros to insert */ 536 /* the infamous `_cdecl' or `__fastcall' declarations. */ 537 /* */ 538#ifndef FT_CALLBACK_DEF 539#ifdef __cplusplus 540#define FT_CALLBACK_DEF( x ) extern "C" x 541#else 542#define FT_CALLBACK_DEF( x ) static x 543#endif 544#endif /* FT_CALLBACK_DEF */ 545 546#ifndef FT_CALLBACK_TABLE 547#ifdef __cplusplus 548#define FT_CALLBACK_TABLE extern "C" 549#define FT_CALLBACK_TABLE_DEF extern "C" 550#else 551#define FT_CALLBACK_TABLE extern 552#define FT_CALLBACK_TABLE_DEF /* nothing */ 553#endif 554#endif /* FT_CALLBACK_TABLE */ 555 556 557FT_END_HEADER 558 559 560#endif /* __FTCONFIG_H__ */ 561 562 563/* END */