1/* BEGIN CSTYLED */ 2/* 3** $Id: luaconf.h,v 1.176.1.2 2013/11/21 17:26:16 roberto Exp $ 4** Configuration file for Lua 5** See Copyright Notice in lua.h 6*/ 7 8 9#ifndef lconfig_h 10#define lconfig_h 11 12#include <sys/zfs_context.h> 13 14 15extern ssize_t lcompat_sprintf(char *, size_t size, const char *, ...); 16extern int64_t lcompat_strtoll(const char *, char **); 17extern int64_t lcompat_pow(int64_t, int64_t); 18extern int lcompat_hashnum(int64_t); 19 20/* 21** ================================================================== 22** Search for "@@" to find all configurable definitions. 23** =================================================================== 24*/ 25 26 27/* 28@@ LUA_ANSI controls the use of non-ansi features. 29** CHANGE it (define it) if you want Lua to avoid the use of any 30** non-ansi feature or library. 31*/ 32#if !defined(LUA_ANSI) && defined(__STRICT_ANSI__) 33#define LUA_ANSI 34#endif 35 36 37#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE) 38#define LUA_WIN /* enable goodies for regular Windows platforms */ 39#endif 40 41#if defined(LUA_WIN) 42#define LUA_DL_DLL 43#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 44#endif 45 46 47 48#if defined(LUA_USE_LINUX) 49#define LUA_USE_POSIX 50#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 51#define LUA_USE_READLINE /* needs some extra libraries */ 52#define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ 53#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 54#define LUA_USE_LONGLONG /* assume support for long long */ 55#endif 56 57#if defined(LUA_USE_MACOSX) 58#define LUA_USE_POSIX 59#define LUA_USE_DLOPEN /* does not need -ldl */ 60#define LUA_USE_READLINE /* needs an extra library: -lreadline */ 61#define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ 62#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ 63#define LUA_USE_LONGLONG /* assume support for long long */ 64#endif 65 66 67 68/* 69@@ LUA_USE_POSIX includes all functionality listed as X/Open System 70@* Interfaces Extension (XSI). 71** CHANGE it (define it) if your system is XSI compatible. 72*/ 73#if defined(LUA_USE_POSIX) 74#define LUA_USE_MKSTEMP 75#define LUA_USE_ISATTY 76#define LUA_USE_POPEN 77#define LUA_USE_ULONGJMP 78#define LUA_USE_GMTIME_R 79#endif 80 81 82 83/* 84@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 85@* Lua libraries. 86@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 87@* C libraries. 88** CHANGE them if your machine has a non-conventional directory 89** hierarchy or if you want to install your libraries in 90** non-conventional directories. 91*/ 92#if defined(_WIN32) /* { */ 93/* 94** In Windows, any exclamation mark ('!') in the path is replaced by the 95** path of the directory of the executable file of the current process. 96*/ 97#define LUA_LDIR "!\\lua\\" 98#define LUA_CDIR "!\\" 99#define LUA_PATH_DEFAULT \ 100 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 101 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua" 102#define LUA_CPATH_DEFAULT \ 103 LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll" 104 105#else /* }{ */ 106 107#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/" 108#define LUA_ROOT "/usr/local/" 109#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR 110#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR 111#define LUA_PATH_DEFAULT \ 112 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 113 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua" 114#define LUA_CPATH_DEFAULT \ 115 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 116#endif /* } */ 117 118 119/* 120@@ LUA_DIRSEP is the directory separator (for submodules). 121** CHANGE it if your machine does not use "/" as the directory separator 122** and is not Windows. (On Windows Lua automatically uses "\".) 123*/ 124#if defined(_WIN32) 125#define LUA_DIRSEP "\\" 126#else 127#define LUA_DIRSEP "/" 128#endif 129 130 131/* 132@@ LUA_ENV is the name of the variable that holds the current 133@@ environment, used to access global names. 134** CHANGE it if you do not like this name. 135*/ 136#define LUA_ENV "_ENV" 137 138 139/* 140@@ LUA_API is a mark for all core API functions. 141@@ LUALIB_API is a mark for all auxiliary library functions. 142@@ LUAMOD_API is a mark for all standard library opening functions. 143** CHANGE them if you need to define those functions in some special way. 144** For instance, if you want to create one Windows DLL with the core and 145** the libraries, you may want to use the following definition (define 146** LUA_BUILD_AS_DLL to get it). 147*/ 148#if defined(LUA_BUILD_AS_DLL) /* { */ 149 150#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 151#define LUA_API __declspec(dllexport) 152#else /* }{ */ 153#define LUA_API __declspec(dllimport) 154#endif /* } */ 155 156#else /* }{ */ 157 158#define LUA_API extern 159 160#endif /* } */ 161 162 163/* more often than not the libs go together with the core */ 164#define LUALIB_API LUA_API 165#define LUAMOD_API LUALIB_API 166 167 168/* 169@@ LUAI_FUNC is a mark for all extern functions that are not to be 170@* exported to outside modules. 171@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 172@* that are not to be exported to outside modules (LUAI_DDEF for 173@* definitions and LUAI_DDEC for declarations). 174** CHANGE them if you need to mark them in some special way. Elf/gcc 175** (versions 3.2 and later) mark them as "hidden" to optimize access 176** when Lua is compiled as a shared library. Not all elf targets support 177** this attribute. Unfortunately, gcc does not offer a way to check 178** whether the target offers that support, and those without support 179** give a warning about it. To avoid these warnings, change to the 180** default definition. 181*/ 182#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 183 defined(__ELF__) /* { */ 184#define LUAI_FUNC __attribute__((visibility("hidden"))) extern 185#define LUAI_DDEC LUAI_FUNC 186#define LUAI_DDEF /* empty */ 187 188#else /* }{ */ 189#define LUAI_FUNC extern 190#define LUAI_DDEC extern 191#define LUAI_DDEF /* empty */ 192#endif /* } */ 193 194 195 196/* 197@@ LUA_QL describes how error messages quote program elements. 198** CHANGE it if you want a different appearance. 199*/ 200#define LUA_QL(x) "'" x "'" 201#define LUA_QS LUA_QL("%s") 202 203 204/* 205@@ LUA_IDSIZE gives the maximum size for the description of the source 206@* of a function in debug information. 207** CHANGE it if you want a different size. 208*/ 209#define LUA_IDSIZE 60 210 211 212/* 213@@ luai_writestringerror defines how to print error messages. 214** (A format string with one argument is enough for Lua...) 215*/ 216#ifdef _KERNEL 217#define luai_writestringerror(s,p) \ 218 (zfs_dbgmsg((s), (p))) 219#else 220#define luai_writestringerror(s,p) \ 221 (fprintf(stderr, (s), (p)), fflush(stderr)) 222#endif 223 224 225/* 226@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is, 227** strings that are internalized. (Cannot be smaller than reserved words 228** or tags for metamethods, as these strings must be internalized; 229** #("function") = 8, #("__newindex") = 10.) 230*/ 231#define LUAI_MAXSHORTLEN 40 232 233 234 235/* 236** {================================================================== 237** Compatibility with previous versions 238** =================================================================== 239*/ 240 241/* 242@@ LUA_COMPAT_ALL controls all compatibility options. 243** You can define it to get all options, or change specific options 244** to fit your specific needs. 245*/ 246#if defined(LUA_COMPAT_ALL) /* { */ 247 248/* 249@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 250** You can replace it with 'table.unpack'. 251*/ 252#define LUA_COMPAT_UNPACK 253 254/* 255@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 256** You can replace it with 'package.searchers'. 257*/ 258#define LUA_COMPAT_LOADERS 259 260/* 261@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 262** You can call your C function directly (with light C functions). 263*/ 264#define lua_cpcall(L,f,u) \ 265 (lua_pushcfunction(L, (f)), \ 266 lua_pushlightuserdata(L,(u)), \ 267 lua_pcall(L,1,0,0)) 268 269 270/* 271@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 272** You can rewrite 'log10(x)' as 'log(x, 10)'. 273*/ 274#define LUA_COMPAT_LOG10 275 276/* 277@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 278** library. You can rewrite 'loadstring(s)' as 'load(s)'. 279*/ 280#define LUA_COMPAT_LOADSTRING 281 282/* 283@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 284*/ 285#define LUA_COMPAT_MAXN 286 287/* 288@@ The following macros supply trivial compatibility for some 289** changes in the API. The macros themselves document how to 290** change your code to avoid using them. 291*/ 292#define lua_strlen(L,i) lua_rawlen(L, (i)) 293 294#define lua_objlen(L,i) lua_rawlen(L, (i)) 295 296#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 297#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 298 299/* 300@@ LUA_COMPAT_MODULE controls compatibility with previous 301** module functions 'module' (Lua) and 'luaL_register' (C). 302*/ 303#define LUA_COMPAT_MODULE 304 305#endif /* } */ 306 307/* }================================================================== */ 308 309 310#undef INT_MAX 311#define INT_MAX 2147483647L 312 313/* 314@@ LUAI_BITSINT defines the number of bits in an int. 315** CHANGE here if Lua cannot automatically detect the number of bits of 316** your machine. Probably you do not need to change this. 317*/ 318/* avoid overflows in comparison */ 319#if INT_MAX-20 < 32760 /* { */ 320#define LUAI_BITSINT 16 321#elif INT_MAX > 2147483640L /* }{ */ 322/* int has at least 32 bits */ 323#define LUAI_BITSINT 32 324#else /* }{ */ 325#error "you must define LUA_BITSINT with number of bits in an integer" 326#endif /* } */ 327 328 329/* 330@@ LUA_INT32 is a signed integer with exactly 32 bits. 331@@ LUAI_UMEM is an unsigned integer big enough to count the total 332@* memory used by Lua. 333@@ LUAI_MEM is a signed integer big enough to count the total memory 334@* used by Lua. 335** CHANGE here if for some weird reason the default definitions are not 336** good enough for your machine. Probably you do not need to change 337** this. 338*/ 339#if LUAI_BITSINT >= 32 /* { */ 340#define LUA_INT32 int 341#define LUAI_UMEM size_t 342#define LUAI_MEM ptrdiff_t 343#else /* }{ */ 344/* 16-bit ints */ 345#define LUA_INT32 long 346#define LUAI_UMEM unsigned long 347#define LUAI_MEM long 348#endif /* } */ 349 350 351/* 352@@ LUAI_MAXSTACK limits the size of the Lua stack. 353** CHANGE it if you need a different limit. This limit is arbitrary; 354** its only purpose is to stop Lua from consuming unlimited stack 355** space (and to reserve some numbers for pseudo-indices). 356*/ 357#if LUAI_BITSINT >= 32 358#define LUAI_MAXSTACK 1000000 359#else 360#define LUAI_MAXSTACK 15000 361#endif 362 363/* reserve some space for error handling */ 364#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000) 365 366 367/* 368@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 369** CHANGE it if it uses too much C-stack space. 370*/ 371#define LUAL_BUFFERSIZE 512 372 373 374/* 375** {================================================================== 376@@ LUA_NUMBER is the type of numbers in Lua. 377** CHANGE the following definitions only if you want to build Lua 378** with a number type different from double. You may also need to 379** change lua_number2int & lua_number2integer. 380** =================================================================== 381*/ 382 383#define LUA_NUMBER int64_t 384 385/* 386@@ LUAI_UACNUMBER is the result of an 'usual argument conversion' 387@* over a number. 388*/ 389#define LUAI_UACNUMBER int64_t 390 391 392/* 393@@ LUA_NUMBER_SCAN is the format for reading numbers. 394@@ LUA_NUMBER_FMT is the format for writing numbers. 395@@ lua_number2str converts a number to a string. 396@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. 397*/ 398#ifndef PRId64 399#define PRId64 "lld" 400#endif 401 402#define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ 403#define LUA_NUMBER_FMT "%" PRId64 404#define lua_number2str(s,n) \ 405 lcompat_sprintf((s), LUAI_MAXNUMBER2STR, LUA_NUMBER_FMT, (n)) 406 407 408/* 409@@ l_mathop allows the addition of an 'l' or 'f' to all math operations 410*/ 411#define l_mathop(x) (x ## l) 412 413 414/* 415@@ lua_str2number converts a decimal numeric string to a number. 416@@ lua_strx2number converts an hexadecimal numeric string to a number. 417** In C99, 'strtod' does both conversions. C89, however, has no function 418** to convert floating hexadecimal strings to numbers. For these 419** systems, you can leave 'lua_strx2number' undefined and Lua will 420** provide its own implementation. 421*/ 422#define lua_str2number(s,p) lcompat_strtoll((s), (p)) 423 424#if defined(LUA_USE_STRTODHEX) 425#define lua_strx2number(s,p) lcompat_strtoll((s), (p)) 426#endif 427 428 429/* 430@@ The luai_num* macros define the primitive operations over numbers. 431*/ 432 433/* the following operations need the math library */ 434#if defined(lobject_c) || defined(lvm_c) 435#define luai_nummod(L,a,b) ((a) % (b)) 436#define luai_numpow(L,a,b) (lcompat_pow((a),(b))) 437#endif 438 439/* these are quite standard operations */ 440#if defined(LUA_CORE) 441#define luai_numadd(L,a,b) ((a)+(b)) 442#define luai_numsub(L,a,b) ((a)-(b)) 443#define luai_nummul(L,a,b) ((a)*(b)) 444#define luai_numdiv(L,a,b) ((a)/(b)) 445#define luai_numunm(L,a) (-(a)) 446#define luai_numeq(a,b) ((a)==(b)) 447#define luai_numlt(L,a,b) ((a)<(b)) 448#define luai_numle(L,a,b) ((a)<=(b)) 449#define luai_numisnan(L,a) (!luai_numeq((a), (a))) 450#endif 451 452 453 454/* 455@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. 456** CHANGE that if ptrdiff_t is not adequate on your machine. (On most 457** machines, ptrdiff_t gives a good choice between int or long.) 458*/ 459#define LUA_INTEGER ptrdiff_t 460 461/* 462@@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned. 463** It must have at least 32 bits. 464*/ 465#define LUA_UNSIGNED uint64_t 466 467 468 469/* 470** Some tricks with doubles 471*/ 472 473#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ 474/* 475** The next definitions activate some tricks to speed up the 476** conversion from doubles to integer types, mainly to LUA_UNSIGNED. 477** 478@@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a 479** DirectX idiosyncrasy. 480** 481@@ LUA_IEEE754TRICK uses a trick that should work on any machine 482** using IEEE754 with a 32-bit integer type. 483** 484@@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be 485** defined when LUA_INTEGER is a 32-bit integer. 486** 487@@ LUA_IEEEENDIAN is the endianness of doubles in your machine 488** (0 for little endian, 1 for big endian); if not defined, Lua will 489** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK). 490** 491@@ LUA_NANTRICK controls the use of a trick to pack all types into 492** a single double value, using NaN values to represent non-number 493** values. The trick only works on 32-bit machines (ints and pointers 494** are 32-bit values) with numbers represented as IEEE 754-2008 doubles 495** with conventional endianness (12345678 or 87654321), in CPUs that do 496** not produce signaling NaN values (all NaNs are quiet). 497*/ 498 499/* Microsoft compiler on a Pentium (32 bit) ? */ 500#if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */ 501 502#define LUA_MSASMTRICK 503#define LUA_IEEEENDIAN 0 504#define LUA_NANTRICK 505 506 507/* pentium 32 bits? */ 508#elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */ 509 510#define LUA_IEEE754TRICK 511#define LUA_IEEELL 512#define LUA_IEEEENDIAN 0 513#define LUA_NANTRICK 514 515/* pentium 64 bits? */ 516#elif defined(__x86_64) /* }{ */ 517 518#define LUA_IEEE754TRICK 519#define LUA_IEEEENDIAN 0 520 521#elif defined(__POWERPC__) || defined(__ppc__) /* }{ */ 522 523#define LUA_IEEE754TRICK 524#define LUA_IEEEENDIAN 1 525 526#else /* }{ */ 527 528/* assume IEEE754 and a 32-bit integer type */ 529#define LUA_IEEE754TRICK 530 531#endif /* } */ 532 533#endif /* } */ 534 535/* }================================================================== */ 536 537 538 539 540/* =================================================================== */ 541 542/* 543** Local configuration. You can use this space to add your redefinitions 544** without modifying the main part of the file. 545*/ 546 547#define getlocaledecpoint() ('.') 548 549#ifndef abs 550#define abs(x) (((x) < 0) ? -(x) : (x)) 551#endif 552 553#if !defined(UCHAR_MAX) 554#define UCHAR_MAX (0xff) 555#endif 556 557#endif 558/* END CSTYLED */ 559