1 /* 2 ** $Id: luaconf.h,v 1.81 2006/02/10 17:44:06 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 <limits.h> 12 #include <stddef.h> 13 14 15 /* 16 ** ================================================================== 17 ** Search for "@@" to find all configurable definitions. 18 ** =================================================================== 19 */ 20 21 22 /* 23 @@ LUA_ANSI controls the use of non-ansi features. 24 ** CHANGE it (define it) if you want Lua to avoid the use of any 25 ** non-ansi feature or library. 26 */ 27 #if defined(__STRICT_ANSI__) 28 #define LUA_ANSI 29 #endif 30 31 32 #if !defined(LUA_ANSI) && defined(_WIN32) 33 #define LUA_WIN 34 #endif 35 36 #if defined(LUA_USE_LINUX) 37 #define LUA_USE_POSIX 38 #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 39 #define LUA_USE_READLINE /* needs some extra libraries */ 40 #endif 41 42 #if defined(LUA_USE_MACOSX) 43 #define LUA_USE_POSIX 44 #define LUA_DL_DYLD /* does not need extra library */ 45 #endif 46 47 48 49 /* 50 @@ LUA_USE_POSIX includes all functionallity listed as X/Open System 51 @* Interfaces Extension (XSI). 52 ** CHANGE it (define it) if your system is XSI compatible. 53 */ 54 #if defined(LUA_USE_POSIX) 55 #define LUA_USE_MKSTEMP 56 #define LUA_USE_ISATTY 57 #define LUA_USE_POPEN 58 #define LUA_USE_ULONGJMP 59 #endif 60 61 62 /* 63 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 64 @* Lua libraries. 65 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 66 @* C libraries. 67 ** CHANGE them if your machine has a non-conventional directory 68 ** hierarchy or if you want to install your libraries in 69 ** non-conventional directories. 70 */ 71 #if defined(_WIN32) 72 /* 73 ** In Windows, any exclamation mark ('!') in the path is replaced by the 74 ** path of the directory of the executable file of the current process. 75 */ 76 #define LUA_LDIR "!\\lua\\" 77 #define LUA_CDIR "!\\" 78 #define LUA_PATH_DEFAULT \ 79 ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 80 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua" 81 #define LUA_CPATH_DEFAULT \ 82 ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll" 83 84 #else 85 #define LUA_ROOT "/usr/local/" 86 #define LUA_LDIR LUA_ROOT "share/lua/5.1/" 87 #define LUA_CDIR LUA_ROOT "lib/lua/5.1/" 88 #define LUA_PATH_DEFAULT \ 89 "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 90 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua" 91 #define LUA_CPATH_DEFAULT \ 92 "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.so" 93 #endif 94 95 96 /* 97 @@ LUA_DIRSEP is the directory separator (for submodules). 98 ** CHANGE it if your machine does not use "/" as the directory separator 99 ** and is not Windows. (On Windows Lua automatically uses "\".) 100 */ 101 #if defined(_WIN32) 102 #define LUA_DIRSEP "\\" 103 #else 104 #define LUA_DIRSEP "/" 105 #endif 106 107 108 /* 109 @@ LUA_PATHSEP is the character that separates templates in a path. 110 @@ LUA_PATH_MARK is the string that marks the substitution points in a 111 @* template. 112 @@ LUA_EXECDIR in a Windows path is replaced by the executable's 113 @* directory. 114 @@ LUA_IGMARK is a mark to ignore all before it when bulding the 115 @* luaopen_ function name. 116 ** CHANGE them if for some reason your system cannot use those 117 ** characters. (E.g., if one of those characters is a common character 118 ** in file/directory names.) Probably you do not need to change them. 119 */ 120 #define LUA_PATHSEP ";" 121 #define LUA_PATH_MARK "?" 122 #define LUA_EXECDIR "!" 123 #define LUA_IGMARK "-" 124 125 126 /* 127 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. 128 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most 129 ** machines, ptrdiff_t gives a good choice between int or long.) 130 */ 131 #define LUA_INTEGER ptrdiff_t 132 133 134 /* 135 @@ LUA_API is a mark for all core API functions. 136 @@ LUALIB_API is a mark for all standard library functions. 137 ** CHANGE them if you need to define those functions in some special way. 138 ** For instance, if you want to create one Windows DLL with the core and 139 ** the libraries, you may want to use the following definition (define 140 ** LUA_BUILD_AS_DLL to get it). 141 */ 142 #if defined(LUA_BUILD_AS_DLL) 143 144 #if defined(LUA_CORE) || defined(LUA_LIB) 145 #define LUA_API __declspec(dllexport) 146 #else 147 #define LUA_API __declspec(dllimport) 148 #endif 149 150 #else 151 152 #define LUA_API extern 153 154 #endif 155 156 /* more often than not the libs go together with the core */ 157 #define LUALIB_API LUA_API 158 159 160 /* 161 @@ LUAI_FUNC is a mark for all extern functions that are not to be 162 @* exported to outside modules. 163 @@ LUAI_DATA is a mark for all extern (const) variables that are not to 164 @* be exported to outside modules. 165 ** CHANGE them if you need to mark them in some special way. Elf/gcc 166 ** (versions 3.2 and later) mark them as "hidden" to optimize access 167 ** when Lua is compiled as a shared library. 168 */ 169 #if defined(luaall_c) 170 #define LUAI_FUNC static 171 #define LUAI_DATA /* empty */ 172 173 #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 174 defined(__ELF__) 175 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 176 #define LUAI_DATA LUAI_FUNC 177 178 #else 179 #define LUAI_FUNC extern 180 #define LUAI_DATA extern 181 #endif 182 183 184 185 /* 186 @@ LUA_QL describes how error messages quote program elements. 187 ** CHANGE it if you want a different appearance. 188 */ 189 #define LUA_QL(x) "'" x "'" 190 #define LUA_QS LUA_QL("%s") 191 192 193 /* 194 @@ LUA_IDSIZE gives the maximum size for the description of the source 195 @* of a function in debug information. 196 ** CHANGE it if you want a different size. 197 */ 198 #define LUA_IDSIZE 60 199 200 201 /* 202 ** {================================================================== 203 ** Stand-alone configuration 204 ** =================================================================== 205 */ 206 207 #if defined(lua_c) || defined(luaall_c) 208 209 /* 210 @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that 211 @* is, whether we're running lua interactively). 212 ** CHANGE it if you have a better definition for non-POSIX/non-Windows 213 ** systems. 214 */ 215 #if defined(LUA_USE_ISATTY) 216 #include <unistd.h> 217 #define lua_stdin_is_tty() isatty(0) 218 #elif defined(LUA_WIN) 219 #include <io.h> 220 #include <stdio.h> 221 #define lua_stdin_is_tty() _isatty(_fileno(stdin)) 222 #else 223 #define lua_stdin_is_tty() 1 /* assume stdin is a tty */ 224 #endif 225 226 227 /* 228 @@ LUA_PROMPT is the default prompt used by stand-alone Lua. 229 @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua. 230 ** CHANGE them if you want different prompts. (You can also change the 231 ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.) 232 */ 233 #define LUA_PROMPT "> " 234 #define LUA_PROMPT2 ">> " 235 236 237 /* 238 @@ LUA_PROGNAME is the default name for the stand-alone Lua program. 239 ** CHANGE it if your stand-alone interpreter has a different name and 240 ** your system is not able to detect that name automatically. 241 */ 242 #define LUA_PROGNAME "lua" 243 244 245 /* 246 @@ LUA_MAXINPUT is the maximum length for an input line in the 247 @* stand-alone interpreter. 248 ** CHANGE it if you need longer lines. 249 */ 250 #define LUA_MAXINPUT 512 251 252 253 /* 254 @@ lua_readline defines how to show a prompt and then read a line from 255 @* the standard input. 256 @@ lua_saveline defines how to "save" a read line in a "history". 257 @@ lua_freeline defines how to free a line read by lua_readline. 258 ** CHANGE them if you want to improve this functionality (e.g., by using 259 ** GNU readline and history facilities). 260 */ 261 #if defined(LUA_USE_READLINE) 262 #include <stdio.h> 263 #include <readline/readline.h> 264 #include <readline/history.h> 265 #define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) 266 #define lua_saveline(L,idx) \ 267 if (lua_strlen(L,idx) > 0) /* non-empty line? */ \ 268 add_history(lua_tostring(L, idx)); /* add it to history */ 269 #define lua_freeline(L,b) ((void)L, free(b)) 270 #else 271 #define lua_readline(L,b,p) \ 272 ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ 273 fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ 274 #define lua_saveline(L,idx) { (void)L; (void)idx; } 275 #define lua_freeline(L,b) { (void)L; (void)b; } 276 #endif 277 278 #endif 279 280 /* }================================================================== */ 281 282 283 /* 284 @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles 285 @* as a percentage. 286 ** CHANGE it if you want the GC to run faster or slower (higher values 287 ** mean larger pauses which mean slower collection.) You can also change 288 ** this value dynamically. 289 */ 290 #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */ 291 292 293 /* 294 @@ LUAI_GCMUL defines the default speed of garbage collection relative to 295 @* memory allocation as a percentage. 296 ** CHANGE it if you want to change the granularity of the garbage 297 ** collection. (Higher values mean coarser collections. 0 represents 298 ** infinity, where each step performs a full collection.) You can also 299 ** change this value dynamically. 300 */ 301 #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ 302 303 304 305 /* 306 @@ LUA_COMPAT_GETN controls compatibility with old getn behavior. 307 ** CHANGE it (define it) if you want exact compatibility with the 308 ** behavior of setn/getn in Lua 5.0. 309 */ 310 #undef LUA_COMPAT_GETN 311 312 /* 313 @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib. 314 ** CHANGE it to undefined as soon as you do not need a global 'loadlib' 315 ** function (the function is still available as 'package.loadlib'). 316 */ 317 #undef LUA_COMPAT_LOADLIB 318 319 /* 320 @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature. 321 ** CHANGE it to undefined as soon as your programs use only '...' to 322 ** access vararg parameters (instead of the old 'arg' table). 323 */ 324 #define LUA_COMPAT_VARARG 325 326 /* 327 @@ LUA_COMPAT_MOD controls compatibility with old math.mod function. 328 ** CHANGE it to undefined as soon as your programs use 'math.fmod' or 329 ** the new '%' operator instead of 'math.mod'. 330 */ 331 #define LUA_COMPAT_MOD 332 333 /* 334 @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting 335 @* facility. 336 ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn 337 ** off the advisory error when nesting [[...]]. 338 */ 339 #define LUA_COMPAT_LSTR 1 340 341 /* 342 @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name. 343 ** CHANGE it to undefined as soon as you rename 'string.gfind' to 344 ** 'string.gmatch'. 345 */ 346 #define LUA_COMPAT_GFIND 347 348 /* 349 @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib' 350 @* behavior. 351 ** CHANGE it to undefined as soon as you replace to 'luaL_registry' 352 ** your uses of 'luaL_openlib' 353 */ 354 #define LUA_COMPAT_OPENLIB 355 356 357 358 /* 359 @@ luai_apicheck is the assert macro used by the Lua-C API. 360 ** CHANGE luai_apicheck if you want Lua to perform some checks in the 361 ** parameters it gets from API calls. This may slow down the interpreter 362 ** a bit, but may be quite useful when debugging C code that interfaces 363 ** with Lua. A useful redefinition is to use assert.h. 364 */ 365 #if defined(LUA_USE_APICHECK) 366 #include <assert.h> 367 #define luai_apicheck(L,o) { (void)L; assert(o); } 368 #else 369 #define luai_apicheck(L,o) { (void)L; } 370 #endif 371 372 373 /* 374 @@ LUAI_BITSINT defines the number of bits in an int. 375 ** CHANGE here if Lua cannot automatically detect the number of bits of 376 ** your machine. Probably you do not need to change this. 377 */ 378 /* avoid overflows in comparison */ 379 #if INT_MAX-20 < 32760 380 #define LUAI_BITSINT 16 381 #elif INT_MAX > 2147483640L 382 /* int has at least 32 bits */ 383 #define LUAI_BITSINT 32 384 #else 385 #error "you must define LUA_BITSINT with number of bits in an integer" 386 #endif 387 388 389 /* 390 @@ LUAI_UINT32 is an unsigned integer with at least 32 bits. 391 @@ LUAI_INT32 is an signed integer with at least 32 bits. 392 @@ LUAI_UMEM is an unsigned integer big enough to count the total 393 @* memory used by Lua. 394 @@ LUAI_MEM is a signed integer big enough to count the total memory 395 @* used by Lua. 396 ** CHANGE here if for some weird reason the default definitions are not 397 ** good enough for your machine. (The definitions in the 'else' 398 ** part always works, but may waste space on machines with 64-bit 399 ** longs.) Probably you do not need to change this. 400 */ 401 #if LUAI_BITSINT >= 32 402 #define LUAI_UINT32 unsigned int 403 #define LUAI_INT32 int 404 #define LUAI_MAXINT32 INT_MAX 405 #define LUAI_UMEM size_t 406 #define LUAI_MEM ptrdiff_t 407 #else 408 /* 16-bit ints */ 409 #define LUAI_UINT32 unsigned long 410 #define LUAI_INT32 long 411 #define LUAI_MAXINT32 LONG_MAX 412 #define LUAI_UMEM unsigned long 413 #define LUAI_MEM long 414 #endif 415 416 417 /* 418 @@ LUAI_MAXCALLS limits the number of nested calls. 419 ** CHANGE it if you need really deep recursive calls. This limit is 420 ** arbitrary; its only purpose is to stop infinite recursion before 421 ** exhausting memory. 422 */ 423 #define LUAI_MAXCALLS 20000 424 425 426 /* 427 @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function 428 @* can use. 429 ** CHANGE it if you need lots of (Lua) stack space for your C 430 ** functions. This limit is arbitrary; its only purpose is to stop C 431 ** functions to consume unlimited stack space. 432 */ 433 #define LUAI_MAXCSTACK 2048 434 435 436 437 /* 438 ** {================================================================== 439 ** CHANGE (to smaller values) the following definitions if your system 440 ** has a small C stack. (Or you may want to change them to larger 441 ** values if your system has a large C stack and these limits are 442 ** too rigid for you.) Some of these constants control the size of 443 ** stack-allocated arrays used by the compiler or the interpreter, while 444 ** others limit the maximum number of recursive calls that the compiler 445 ** or the interpreter can perform. Values too large may cause a C stack 446 ** overflow for some forms of deep constructs. 447 ** =================================================================== 448 */ 449 450 451 /* 452 @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and 453 @* syntactical nested non-terminals in a program. 454 */ 455 #define LUAI_MAXCCALLS 200 456 457 458 /* 459 @@ LUAI_MAXVARS is the maximum number of local variables per function 460 @* (must be smaller than 250). 461 */ 462 #define LUAI_MAXVARS 200 463 464 465 /* 466 @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function 467 @* (must be smaller than 250). 468 */ 469 #define LUAI_MAXUPVALUES 60 470 471 472 /* 473 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 474 */ 475 #define LUAL_BUFFERSIZE BUFSIZ 476 477 /* }================================================================== */ 478 479 480 481 482 /* 483 ** {================================================================== 484 @@ LUA_NUMBER is the type of numbers in Lua. 485 ** CHANGE the following definitions only if you want to build Lua 486 ** with a number type different from double. You may also need to 487 ** change lua_number2int & lua_number2integer. 488 ** =================================================================== 489 */ 490 491 #define LUA_NUMBER_DOUBLE 492 #define LUA_NUMBER double 493 494 /* 495 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' 496 @* over a number. 497 */ 498 #define LUAI_UACNUMBER double 499 500 501 /* 502 @@ LUA_NUMBER_SCAN is the format for reading numbers. 503 @@ LUA_NUMBER_FMT is the format for writing numbers. 504 @@ lua_number2str converts a number to a string. 505 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. 506 @@ lua_str2number converts a string to a number. 507 */ 508 #define LUA_NUMBER_SCAN "%lf" 509 #define LUA_NUMBER_FMT "%.14g" 510 #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) 511 #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ 512 #define lua_str2number(s,p) strtod((s), (p)) 513 514 515 /* 516 @@ The luai_num* macros define the primitive operations over numbers. 517 */ 518 #if defined(LUA_CORE) 519 #include <math.h> 520 #define luai_numadd(a,b) ((a)+(b)) 521 #define luai_numsub(a,b) ((a)-(b)) 522 #define luai_nummul(a,b) ((a)*(b)) 523 #define luai_numdiv(a,b) ((a)/(b)) 524 #define luai_nummod(a,b) ((a) - floor((a)/(b))*(b)) 525 #define luai_numpow(a,b) (pow(a,b)) 526 #define luai_numunm(a) (-(a)) 527 #define luai_numeq(a,b) ((a)==(b)) 528 #define luai_numlt(a,b) ((a)<(b)) 529 #define luai_numle(a,b) ((a)<=(b)) 530 #define luai_numisnan(a) (!luai_numeq((a), (a))) 531 #endif 532 533 534 /* 535 @@ lua_number2int is a macro to convert lua_Number to int. 536 @@ lua_number2integer is a macro to convert lua_Number to lua_Integer. 537 ** CHANGE them if you know a faster way to convert a lua_Number to 538 ** int (with any rounding method and without throwing errors) in your 539 ** system. In Pentium machines, a naive typecast from double to int 540 ** in C is extremely slow, so any alternative is worth trying. 541 */ 542 543 /* On a Pentium, resort to a trick */ 544 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \ 545 (defined(__i386) || defined (_M_IX86) || defined(__i386__)) 546 union luai_Cast { double l_d; long l_l; }; 547 #define lua_number2int(i,d) \ 548 { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; } 549 #define lua_number2integer(i,n) lua_number2int(i, n) 550 551 /* this option always works, but may be slow */ 552 #else 553 #define lua_number2int(i,d) ((i)=(int)(d)) 554 #define lua_number2integer(i,d) ((i)=(lua_Integer)(d)) 555 556 #endif 557 558 /* }================================================================== */ 559 560 561 /* 562 @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment. 563 ** CHANGE it if your system requires alignments larger than double. (For 564 ** instance, if your system supports long doubles and they must be 565 ** aligned in 16-byte boundaries, then you should add long double in the 566 ** union.) Probably you do not need to change this. 567 */ 568 #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } 569 570 571 /* 572 @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling. 573 ** CHANGE them if you prefer to use longjmp/setjmp even with C++ 574 ** or if want/don't to use _longjmp/_setjmp instead of regular 575 ** longjmp/setjmp. By default, Lua handles errors with exceptions when 576 ** compiling as C++ code, with _longjmp/_setjmp when asked to use them, 577 ** and with longjmp/setjmp otherwise. 578 */ 579 #if defined(__cplusplus) 580 /* C++ exceptions */ 581 #define LUAI_THROW(L,c) throw(c) 582 #define LUAI_TRY(L,c,a) try { a } catch(...) \ 583 { if ((c)->status == 0) (c)->status = -1; } 584 #define luai_jmpbuf int /* dummy variable */ 585 586 #elif defined(LUA_USE_ULONGJMP) 587 /* in Unix, try _longjmp/_setjmp (more efficient) */ 588 #define LUAI_THROW(L,c) _longjmp((c)->b, 1) 589 #define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } 590 #define luai_jmpbuf jmp_buf 591 592 #else 593 /* default handling with long jumps */ 594 #define LUAI_THROW(L,c) longjmp((c)->b, 1) 595 #define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } 596 #define luai_jmpbuf jmp_buf 597 598 #endif 599 600 601 /* 602 @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern 603 @* can do during pattern-matching. 604 ** CHANGE it if you need more captures. This limit is arbitrary. 605 */ 606 #define LUA_MAXCAPTURES 32 607 608 609 /* 610 @@ lua_tmpnam is the function that the OS library uses to create a 611 @* temporary name. 612 @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam. 613 ** CHANGE them if you have an alternative to tmpnam (which is considered 614 ** insecure) or if you want the original tmpnam anyway. By default, Lua 615 ** uses tmpnam except when POSIX is available, where it uses mkstemp. 616 */ 617 #if defined(loslib_c) || defined(luaall_c) 618 619 #if defined(LUA_USE_MKSTEMP) 620 #include <unistd.h> 621 #define LUA_TMPNAMBUFSIZE 32 622 #define lua_tmpnam(b,e) { \ 623 strcpy(b, "/tmp/lua_XXXXXX"); \ 624 e = mkstemp(b); \ 625 if (e != -1) close(e); \ 626 e = (e == -1); } 627 628 #else 629 #define LUA_TMPNAMBUFSIZE L_tmpnam 630 #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } 631 #endif 632 633 #endif 634 635 636 /* 637 @@ lua_popen spawns a new process connected to the current one through 638 @* the file streams. 639 ** CHANGE it if you have a way to implement it in your system. 640 */ 641 #if defined(LUA_USE_POPEN) 642 643 #define lua_popen(L,c,m) ((void)L, popen(c,m)) 644 #define lua_pclose(L,file) ((void)L, (pclose(file) != -1)) 645 646 #elif defined(LUA_WIN) 647 648 #define lua_popen(L,c,m) ((void)L, _popen(c,m)) 649 #define lua_pclose(L,file) ((void)L, (_pclose(file) != -1)) 650 651 #else 652 653 #define lua_popen(L,c,m) ((void)((void)c, m), \ 654 luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0) 655 #define lua_pclose(L,file) ((void)((void)L, file), 0) 656 657 #endif 658 659 /* 660 @@ LUA_DL_* define which dynamic-library system Lua should use. 661 ** CHANGE here if Lua has problems choosing the appropriate 662 ** dynamic-library system for your platform (either Windows' DLL, Mac's 663 ** dyld, or Unix's dlopen). If your system is some kind of Unix, there 664 ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for 665 ** it. To use dlopen you also need to adapt the src/Makefile (probably 666 ** adding -ldl to the linker options), so Lua does not select it 667 ** automatically. (When you change the makefile to add -ldl, you must 668 ** also add -DLUA_USE_DLOPEN.) 669 ** If you do not want any kind of dynamic library, undefine all these 670 ** options. 671 ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD. 672 */ 673 #if defined(LUA_USE_DLOPEN) 674 #define LUA_DL_DLOPEN 675 #endif 676 677 #if defined(LUA_WIN) 678 #define LUA_DL_DLL 679 #endif 680 681 682 /* 683 @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State 684 @* (the data goes just *before* the lua_State pointer). 685 ** CHANGE (define) this if you really need that. This value must be 686 ** a multiple of the maximum alignment required for your machine. 687 */ 688 #define LUAI_EXTRASPACE 0 689 690 691 /* 692 @@ luai_userstate* allow user-specific actions on threads. 693 ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something 694 ** extra when a thread is created/deleted/resumed/yielded. 695 */ 696 #define luai_userstateopen(L) ((void)L) 697 #define luai_userstateclose(L) ((void)L) 698 #define luai_userstatethread(L,L1) ((void)L) 699 #define luai_userstatefree(L) ((void)L) 700 #define luai_userstateresume(L,n) ((void)L) 701 #define luai_userstateyield(L,n) ((void)L) 702 703 704 /* 705 @@ LUA_INTFRMLEN is the length modifier for integer conversions 706 @* in 'string.format'. 707 @@ LUA_INTFRM_T is the integer type correspoding to the previous length 708 @* modifier. 709 ** CHANGE them if your system supports long long or does not support long. 710 */ 711 712 #if defined(LUA_USELONGLONG) 713 714 #define LUA_INTFRMLEN "ll" 715 #define LUA_INTFRM_T long long 716 717 #else 718 719 #define LUA_INTFRMLEN "l" 720 #define LUA_INTFRM_T long 721 722 #endif 723 724 725 726 /* =================================================================== */ 727 728 /* 729 ** Local configuration. You can use this space to add your redefinitions 730 ** without modifying the main part of the file. 731 */ 732 733 734 735 #endif 736 737