1 /* 2 ** $Id: luaconf.h,v 1.176.1.2 2013/11/21 17:26:16 roberto Exp $ 3 ** Configuration file for Lua 4 ** See Copyright Notice in lua.h 5 */ 6 7 8 #ifndef lconfig_h 9 #define lconfig_h 10 11 #include <sys/zfs_context.h> 12 13 14 extern ssize_t lcompat_sprintf(char *, size_t size, const char *, ...); 15 extern int64_t lcompat_strtoll(const char *, char **); 16 extern int64_t lcompat_pow(int64_t, int64_t); 17 extern int lcompat_hashnum(int64_t); 18 19 /* 20 ** ================================================================== 21 ** Search for "@@" to find all configurable definitions. 22 ** =================================================================== 23 */ 24 25 26 /* 27 @@ LUA_ANSI controls the use of non-ansi features. 28 ** CHANGE it (define it) if you want Lua to avoid the use of any 29 ** non-ansi feature or library. 30 */ 31 #if !defined(LUA_ANSI) && defined(__STRICT_ANSI__) 32 #define LUA_ANSI 33 #endif 34 35 36 #if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE) 37 #define LUA_WIN /* enable goodies for regular Windows platforms */ 38 #endif 39 40 #if defined(LUA_WIN) 41 #define LUA_DL_DLL 42 #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 43 #endif 44 45 46 47 #if defined(LUA_USE_LINUX) 48 #define LUA_USE_POSIX 49 #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 50 #define LUA_USE_READLINE /* needs some extra libraries */ 51 #define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ 52 #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 53 #define LUA_USE_LONGLONG /* assume support for long long */ 54 #endif 55 56 #if defined(LUA_USE_MACOSX) 57 #define LUA_USE_POSIX 58 #define LUA_USE_DLOPEN /* does not need -ldl */ 59 #define LUA_USE_READLINE /* needs an extra library: -lreadline */ 60 #define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ 61 #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 62 #define LUA_USE_LONGLONG /* assume support for long long */ 63 #endif 64 65 66 67 /* 68 @@ LUA_USE_POSIX includes all functionality listed as X/Open System 69 @* Interfaces Extension (XSI). 70 ** CHANGE it (define it) if your system is XSI compatible. 71 */ 72 #if defined(LUA_USE_POSIX) 73 #define LUA_USE_MKSTEMP 74 #define LUA_USE_ISATTY 75 #define LUA_USE_POPEN 76 #define LUA_USE_ULONGJMP 77 #define LUA_USE_GMTIME_R 78 #endif 79 80 81 82 /* 83 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 84 @* Lua libraries. 85 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 86 @* C libraries. 87 ** CHANGE them if your machine has a non-conventional directory 88 ** hierarchy or if you want to install your libraries in 89 ** non-conventional directories. 90 */ 91 #if defined(_WIN32) /* { */ 92 /* 93 ** In Windows, any exclamation mark ('!') in the path is replaced by the 94 ** path of the directory of the executable file of the current process. 95 */ 96 #define LUA_LDIR "!\\lua\\" 97 #define LUA_CDIR "!\\" 98 #define LUA_PATH_DEFAULT \ 99 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 100 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua" 101 #define LUA_CPATH_DEFAULT \ 102 LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll" 103 104 #else /* }{ */ 105 106 #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/" 107 #define LUA_ROOT "/usr/local/" 108 #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR 109 #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR 110 #define LUA_PATH_DEFAULT \ 111 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 112 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua" 113 #define LUA_CPATH_DEFAULT \ 114 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 115 #endif /* } */ 116 117 118 /* 119 @@ LUA_DIRSEP is the directory separator (for submodules). 120 ** CHANGE it if your machine does not use "/" as the directory separator 121 ** and is not Windows. (On Windows Lua automatically uses "\".) 122 */ 123 #if defined(_WIN32) 124 #define LUA_DIRSEP "\\" 125 #else 126 #define LUA_DIRSEP "/" 127 #endif 128 129 130 /* 131 @@ LUA_ENV is the name of the variable that holds the current 132 @@ environment, used to access global names. 133 ** CHANGE it if you do not like this name. 134 */ 135 #define LUA_ENV "_ENV" 136 137 138 /* 139 @@ LUA_API is a mark for all core API functions. 140 @@ LUALIB_API is a mark for all auxiliary library functions. 141 @@ LUAMOD_API is a mark for all standard library opening functions. 142 ** CHANGE them if you need to define those functions in some special way. 143 ** For instance, if you want to create one Windows DLL with the core and 144 ** the libraries, you may want to use the following definition (define 145 ** LUA_BUILD_AS_DLL to get it). 146 */ 147 #if defined(LUA_BUILD_AS_DLL) /* { */ 148 149 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 150 #define LUA_API __declspec(dllexport) 151 #else /* }{ */ 152 #define LUA_API __declspec(dllimport) 153 #endif /* } */ 154 155 #else /* }{ */ 156 157 #define LUA_API extern 158 159 #endif /* } */ 160 161 162 /* more often than not the libs go together with the core */ 163 #define LUALIB_API LUA_API 164 #define LUAMOD_API LUALIB_API 165 166 167 /* 168 @@ LUAI_FUNC is a mark for all extern functions that are not to be 169 @* exported to outside modules. 170 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 171 @* that are not to be exported to outside modules (LUAI_DDEF for 172 @* definitions and LUAI_DDEC for declarations). 173 ** CHANGE them if you need to mark them in some special way. Elf/gcc 174 ** (versions 3.2 and later) mark them as "hidden" to optimize access 175 ** when Lua is compiled as a shared library. Not all elf targets support 176 ** this attribute. Unfortunately, gcc does not offer a way to check 177 ** whether the target offers that support, and those without support 178 ** give a warning about it. To avoid these warnings, change to the 179 ** default definition. 180 */ 181 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 182 defined(__ELF__) /* { */ 183 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 184 #define LUAI_DDEC LUAI_FUNC 185 #define LUAI_DDEF /* empty */ 186 187 #else /* }{ */ 188 #define LUAI_FUNC extern 189 #define LUAI_DDEC extern 190 #define LUAI_DDEF /* empty */ 191 #endif /* } */ 192 193 194 195 /* 196 @@ LUA_QL describes how error messages quote program elements. 197 ** CHANGE it if you want a different appearance. 198 */ 199 #define LUA_QL(x) "'" x "'" 200 #define LUA_QS LUA_QL("%s") 201 202 203 /* 204 @@ LUA_IDSIZE gives the maximum size for the description of the source 205 @* of a function in debug information. 206 ** CHANGE it if you want a different size. 207 */ 208 #define LUA_IDSIZE 60 209 210 211 /* 212 @@ luai_writestringerror defines how to print error messages. 213 ** (A format string with one argument is enough for Lua...) 214 */ 215 #ifdef _KERNEL 216 #define luai_writestringerror(s,p) \ 217 (zfs_dbgmsg((s), (p))) 218 #else 219 #define luai_writestringerror(s,p) \ 220 (fprintf(stderr, (s), (p)), fflush(stderr)) 221 #endif 222 223 224 /* 225 @@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is, 226 ** strings that are internalized. (Cannot be smaller than reserved words 227 ** or tags for metamethods, as these strings must be internalized; 228 ** #("function") = 8, #("__newindex") = 10.) 229 */ 230 #define LUAI_MAXSHORTLEN 40 231 232 233 234 /* 235 ** {================================================================== 236 ** Compatibility with previous versions 237 ** =================================================================== 238 */ 239 240 /* 241 @@ LUA_COMPAT_ALL controls all compatibility options. 242 ** You can define it to get all options, or change specific options 243 ** to fit your specific needs. 244 */ 245 #if defined(LUA_COMPAT_ALL) /* { */ 246 247 /* 248 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 249 ** You can replace it with 'table.unpack'. 250 */ 251 #define LUA_COMPAT_UNPACK 252 253 /* 254 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 255 ** You can replace it with 'package.searchers'. 256 */ 257 #define LUA_COMPAT_LOADERS 258 259 /* 260 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 261 ** You can call your C function directly (with light C functions). 262 */ 263 #define lua_cpcall(L,f,u) \ 264 (lua_pushcfunction(L, (f)), \ 265 lua_pushlightuserdata(L,(u)), \ 266 lua_pcall(L,1,0,0)) 267 268 269 /* 270 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 271 ** You can rewrite 'log10(x)' as 'log(x, 10)'. 272 */ 273 #define LUA_COMPAT_LOG10 274 275 /* 276 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 277 ** library. You can rewrite 'loadstring(s)' as 'load(s)'. 278 */ 279 #define LUA_COMPAT_LOADSTRING 280 281 /* 282 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 283 */ 284 #define LUA_COMPAT_MAXN 285 286 /* 287 @@ The following macros supply trivial compatibility for some 288 ** changes in the API. The macros themselves document how to 289 ** change your code to avoid using them. 290 */ 291 #define lua_strlen(L,i) lua_rawlen(L, (i)) 292 293 #define lua_objlen(L,i) lua_rawlen(L, (i)) 294 295 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 296 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 297 298 /* 299 @@ LUA_COMPAT_MODULE controls compatibility with previous 300 ** module functions 'module' (Lua) and 'luaL_register' (C). 301 */ 302 #define LUA_COMPAT_MODULE 303 304 #endif /* } */ 305 306 /* }================================================================== */ 307 308 309 #undef INT_MAX 310 #define INT_MAX 2147483647L 311 312 /* 313 @@ LUAI_BITSINT defines the number of bits in an int. 314 ** CHANGE here if Lua cannot automatically detect the number of bits of 315 ** your machine. Probably you do not need to change this. 316 */ 317 /* avoid overflows in comparison */ 318 #if INT_MAX-20 < 32760 /* { */ 319 #define LUAI_BITSINT 16 320 #elif INT_MAX > 2147483640L /* }{ */ 321 /* int has at least 32 bits */ 322 #define LUAI_BITSINT 32 323 #else /* }{ */ 324 #error "you must define LUA_BITSINT with number of bits in an integer" 325 #endif /* } */ 326 327 328 /* 329 @@ LUA_INT32 is a signed integer with exactly 32 bits. 330 @@ LUAI_UMEM is an unsigned integer big enough to count the total 331 @* memory used by Lua. 332 @@ LUAI_MEM is a signed integer big enough to count the total memory 333 @* used by Lua. 334 ** CHANGE here if for some weird reason the default definitions are not 335 ** good enough for your machine. Probably you do not need to change 336 ** this. 337 */ 338 #if LUAI_BITSINT >= 32 /* { */ 339 #define LUA_INT32 int 340 #define LUAI_UMEM size_t 341 #define LUAI_MEM ptrdiff_t 342 #else /* }{ */ 343 /* 16-bit ints */ 344 #define LUA_INT32 long 345 #define LUAI_UMEM unsigned long 346 #define LUAI_MEM long 347 #endif /* } */ 348 349 350 /* 351 @@ LUAI_MAXSTACK limits the size of the Lua stack. 352 ** CHANGE it if you need a different limit. This limit is arbitrary; 353 ** its only purpose is to stop Lua from consuming unlimited stack 354 ** space (and to reserve some numbers for pseudo-indices). 355 */ 356 #if LUAI_BITSINT >= 32 357 #define LUAI_MAXSTACK 1000000 358 #else 359 #define LUAI_MAXSTACK 15000 360 #endif 361 362 /* reserve some space for error handling */ 363 #define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000) 364 365 366 /* 367 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 368 ** CHANGE it if it uses too much C-stack space. 369 */ 370 #define LUAL_BUFFERSIZE 512 371 372 373 /* 374 ** {================================================================== 375 @@ LUA_NUMBER is the type of numbers in Lua. 376 ** CHANGE the following definitions only if you want to build Lua 377 ** with a number type different from double. You may also need to 378 ** change lua_number2int & lua_number2integer. 379 ** =================================================================== 380 */ 381 382 #define LUA_NUMBER int64_t 383 384 /* 385 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' 386 @* over a number. 387 */ 388 #define LUAI_UACNUMBER int64_t 389 390 391 /* 392 @@ LUA_NUMBER_SCAN is the format for reading numbers. 393 @@ LUA_NUMBER_FMT is the format for writing numbers. 394 @@ lua_number2str converts a number to a string. 395 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. 396 */ 397 #ifndef PRId64 398 #define PRId64 "lld" 399 #endif 400 401 #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ 402 #define LUA_NUMBER_FMT "%" PRId64 403 #define lua_number2str(s,n) \ 404 lcompat_sprintf((s), LUAI_MAXNUMBER2STR, LUA_NUMBER_FMT, (n)) 405 406 407 /* 408 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations 409 */ 410 #define l_mathop(x) (x ## l) 411 412 413 /* 414 @@ lua_str2number converts a decimal numeric string to a number. 415 @@ lua_strx2number converts an hexadecimal numeric string to a number. 416 ** In C99, 'strtod' does both conversions. C89, however, has no function 417 ** to convert floating hexadecimal strings to numbers. For these 418 ** systems, you can leave 'lua_strx2number' undefined and Lua will 419 ** provide its own implementation. 420 */ 421 #define lua_str2number(s,p) lcompat_strtoll((s), (p)) 422 423 #if defined(LUA_USE_STRTODHEX) 424 #define lua_strx2number(s,p) lcompat_strtoll((s), (p)) 425 #endif 426 427 428 /* 429 @@ The luai_num* macros define the primitive operations over numbers. 430 */ 431 432 /* the following operations need the math library */ 433 #if defined(lobject_c) || defined(lvm_c) 434 #define luai_nummod(L,a,b) ((a) % (b)) 435 #define luai_numpow(L,a,b) (lcompat_pow((a),(b))) 436 #endif 437 438 /* these are quite standard operations */ 439 #if defined(LUA_CORE) 440 #define luai_numadd(L,a,b) ((a)+(b)) 441 #define luai_numsub(L,a,b) ((a)-(b)) 442 #define luai_nummul(L,a,b) ((a)*(b)) 443 #define luai_numdiv(L,a,b) ((a)/(b)) 444 #define luai_numunm(L,a) (-(a)) 445 #define luai_numeq(a,b) ((a)==(b)) 446 #define luai_numlt(L,a,b) ((a)<(b)) 447 #define luai_numle(L,a,b) ((a)<=(b)) 448 #define luai_numisnan(L,a) (!luai_numeq((a), (a))) 449 #endif 450 451 452 453 /* 454 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. 455 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most 456 ** machines, ptrdiff_t gives a good choice between int or long.) 457 */ 458 #define LUA_INTEGER ptrdiff_t 459 460 /* 461 @@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned. 462 ** It must have at least 32 bits. 463 */ 464 #define LUA_UNSIGNED uint64_t 465 466 467 468 /* 469 ** Some tricks with doubles 470 */ 471 472 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ 473 /* 474 ** The next definitions activate some tricks to speed up the 475 ** conversion from doubles to integer types, mainly to LUA_UNSIGNED. 476 ** 477 @@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a 478 ** DirectX idiosyncrasy. 479 ** 480 @@ LUA_IEEE754TRICK uses a trick that should work on any machine 481 ** using IEEE754 with a 32-bit integer type. 482 ** 483 @@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be 484 ** defined when LUA_INTEGER is a 32-bit integer. 485 ** 486 @@ LUA_IEEEENDIAN is the endianness of doubles in your machine 487 ** (0 for little endian, 1 for big endian); if not defined, Lua will 488 ** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK). 489 ** 490 @@ LUA_NANTRICK controls the use of a trick to pack all types into 491 ** a single double value, using NaN values to represent non-number 492 ** values. The trick only works on 32-bit machines (ints and pointers 493 ** are 32-bit values) with numbers represented as IEEE 754-2008 doubles 494 ** with conventional endianness (12345678 or 87654321), in CPUs that do 495 ** not produce signaling NaN values (all NaNs are quiet). 496 */ 497 498 /* Microsoft compiler on a Pentium (32 bit) ? */ 499 #if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */ 500 501 #define LUA_MSASMTRICK 502 #define LUA_IEEEENDIAN 0 503 #define LUA_NANTRICK 504 505 506 /* pentium 32 bits? */ 507 #elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */ 508 509 #define LUA_IEEE754TRICK 510 #define LUA_IEEELL 511 #define LUA_IEEEENDIAN 0 512 #define LUA_NANTRICK 513 514 /* pentium 64 bits? */ 515 #elif defined(__x86_64) /* }{ */ 516 517 #define LUA_IEEE754TRICK 518 #define LUA_IEEEENDIAN 0 519 520 #elif defined(__POWERPC__) || defined(__ppc__) /* }{ */ 521 522 #define LUA_IEEE754TRICK 523 #define LUA_IEEEENDIAN 1 524 525 #else /* }{ */ 526 527 /* assume IEEE754 and a 32-bit integer type */ 528 #define LUA_IEEE754TRICK 529 530 #endif /* } */ 531 532 #endif /* } */ 533 534 /* }================================================================== */ 535 536 537 538 539 /* =================================================================== */ 540 541 /* 542 ** Local configuration. You can use this space to add your redefinitions 543 ** without modifying the main part of the file. 544 */ 545 546 #define getlocaledecpoint() ('.') 547 548 #ifndef abs 549 #define abs(x) (((x) < 0) ? -(x) : (x)) 550 #endif 551 552 #if !defined(UCHAR_MAX) 553 #define UCHAR_MAX (0xff) 554 #endif 555 556 #endif 557