1 /* $NetBSD: luaconf.h,v 1.2 2010/10/31 11:19:42 mbalmer Exp $ */ 2 3 /* 4 ** Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $ 5 ** Configuration file for Lua 6 ** See Copyright Notice in lua.h 7 */ 8 9 10 #ifndef lconfig_h 11 #define lconfig_h 12 13 #include <limits.h> 14 #include <stddef.h> 15 16 17 /* 18 ** ================================================================== 19 ** Search for "@@" to find all configurable definitions. 20 ** =================================================================== 21 */ 22 23 24 /* 25 @@ LUA_ANSI controls the use of non-ansi features. 26 ** CHANGE it (define it) if you want Lua to avoid the use of any 27 ** non-ansi feature or library. 28 */ 29 #if defined(__STRICT_ANSI__) 30 #define LUA_ANSI 31 #endif 32 33 34 #if !defined(LUA_ANSI) && defined(_WIN32) 35 #define LUA_WIN 36 #endif 37 38 #if defined(LUA_USE_LINUX) 39 #define LUA_USE_POSIX 40 #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 41 #define LUA_USE_READLINE /* needs some extra libraries */ 42 #endif 43 44 #if defined(LUA_USE_MACOSX) 45 #define LUA_USE_POSIX 46 #define LUA_DL_DYLD /* does not need extra library */ 47 #endif 48 49 50 51 /* 52 @@ LUA_USE_POSIX includes all functionallity listed as X/Open System 53 @* Interfaces Extension (XSI). 54 ** CHANGE it (define it) if your system is XSI compatible. 55 */ 56 #if defined(LUA_USE_POSIX) 57 #define LUA_USE_MKSTEMP 58 #define LUA_USE_ISATTY 59 #define LUA_USE_POPEN 60 #define LUA_USE_ULONGJMP 61 #endif 62 63 64 /* 65 @@ LUA_PATH and LUA_CPATH are the names of the environment variables that 66 @* Lua check to set its paths. 67 @@ LUA_INIT is the name of the environment variable that Lua 68 @* checks for initialization code. 69 ** CHANGE them if you want different names. 70 */ 71 #define LUA_PATH "LUA_PATH" 72 #define LUA_CPATH "LUA_CPATH" 73 #define LUA_INIT "LUA_INIT" 74 75 76 /* 77 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 78 @* Lua libraries. 79 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 80 @* C libraries. 81 ** CHANGE them if your machine has a non-conventional directory 82 ** hierarchy or if you want to install your libraries in 83 ** non-conventional directories. 84 */ 85 #if defined(_WIN32) 86 /* 87 ** In Windows, any exclamation mark ('!') in the path is replaced by the 88 ** path of the directory of the executable file of the current process. 89 */ 90 #define LUA_LDIR "!\\lua\\" 91 #define LUA_CDIR "!\\" 92 #define LUA_PATH_DEFAULT \ 93 ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 94 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua" 95 #define LUA_CPATH_DEFAULT \ 96 ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll" 97 98 #else 99 #define LUA_ROOT "/usr/" 100 #define LUA_LDIR LUA_ROOT "share/lua/5.1/" 101 #define LUA_CDIR LUA_ROOT "lib/lua/5.1/" 102 103 /* 104 * The original Lua distribution contain "./?.lua" at the beginning 105 * of LUA_PATH_DEFAULT and "./?.so" at the beginning of LUA_CPATH_DEFAULT. 106 * These path elements have been removed for the NetBSD version of Lua 107 * to avoid potential security problems. 108 */ 109 #define LUA_PATH_DEFAULT \ 110 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 111 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua" 112 #define LUA_CPATH_DEFAULT \ 113 LUA_CDIR"?.so;" LUA_CDIR"loadall.so" 114 #endif 115 116 117 /* 118 @@ LUA_DIRSEP is the directory separator (for submodules). 119 ** CHANGE it if your machine does not use "/" as the directory separator 120 ** and is not Windows. (On Windows Lua automatically uses "\".) 121 */ 122 #if defined(_WIN32) 123 #define LUA_DIRSEP "\\" 124 #else 125 #define LUA_DIRSEP "/" 126 #endif 127 128 129 /* 130 @@ LUA_PATHSEP is the character that separates templates in a path. 131 @@ LUA_PATH_MARK is the string that marks the substitution points in a 132 @* template. 133 @@ LUA_EXECDIR in a Windows path is replaced by the executable's 134 @* directory. 135 @@ LUA_IGMARK is a mark to ignore all before it when bulding the 136 @* luaopen_ function name. 137 ** CHANGE them if for some reason your system cannot use those 138 ** characters. (E.g., if one of those characters is a common character 139 ** in file/directory names.) Probably you do not need to change them. 140 */ 141 #define LUA_PATHSEP ";" 142 #define LUA_PATH_MARK "?" 143 #define LUA_EXECDIR "!" 144 #define LUA_IGMARK "-" 145 146 147 /* 148 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. 149 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most 150 ** machines, ptrdiff_t gives a good choice between int or long.) 151 */ 152 #define LUA_INTEGER ptrdiff_t 153 154 155 /* 156 @@ LUA_API is a mark for all core API functions. 157 @@ LUALIB_API is a mark for all standard library functions. 158 ** CHANGE them if you need to define those functions in some special way. 159 ** For instance, if you want to create one Windows DLL with the core and 160 ** the libraries, you may want to use the following definition (define 161 ** LUA_BUILD_AS_DLL to get it). 162 */ 163 #if defined(LUA_BUILD_AS_DLL) 164 165 #if defined(LUA_CORE) || defined(LUA_LIB) 166 #define LUA_API __declspec(dllexport) 167 #else 168 #define LUA_API __declspec(dllimport) 169 #endif 170 171 #else 172 173 #define LUA_API extern 174 175 #endif 176 177 /* more often than not the libs go together with the core */ 178 #define LUALIB_API LUA_API 179 180 181 /* 182 @@ LUAI_FUNC is a mark for all extern functions that are not to be 183 @* exported to outside modules. 184 @@ LUAI_DATA is a mark for all extern (const) variables that are not to 185 @* be exported to outside modules. 186 ** CHANGE them if you need to mark them in some special way. Elf/gcc 187 ** (versions 3.2 and later) mark them as "hidden" to optimize access 188 ** when Lua is compiled as a shared library. 189 */ 190 #if defined(luaall_c) 191 #define LUAI_FUNC static 192 #define LUAI_DATA /* empty */ 193 194 #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 195 defined(__ELF__) 196 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 197 #define LUAI_DATA LUAI_FUNC 198 199 #else 200 #define LUAI_FUNC extern 201 #define LUAI_DATA extern 202 #endif 203 204 205 206 /* 207 @@ LUA_QL describes how error messages quote program elements. 208 ** CHANGE it if you want a different appearance. 209 */ 210 #define LUA_QL(x) "'" x "'" 211 #define LUA_QS LUA_QL("%s") 212 213 214 /* 215 @@ LUA_IDSIZE gives the maximum size for the description of the source 216 @* of a function in debug information. 217 ** CHANGE it if you want a different size. 218 */ 219 #define LUA_IDSIZE 60 220 221 222 /* 223 ** {================================================================== 224 ** Stand-alone configuration 225 ** =================================================================== 226 */ 227 228 #if defined(lua_c) || defined(luaall_c) 229 230 /* 231 @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that 232 @* is, whether we're running lua interactively). 233 ** CHANGE it if you have a better definition for non-POSIX/non-Windows 234 ** systems. 235 */ 236 #if defined(LUA_USE_ISATTY) 237 #include <unistd.h> 238 #define lua_stdin_is_tty() isatty(0) 239 #elif defined(LUA_WIN) 240 #include <io.h> 241 #include <stdio.h> 242 #define lua_stdin_is_tty() _isatty(_fileno(stdin)) 243 #else 244 #define lua_stdin_is_tty() 1 /* assume stdin is a tty */ 245 #endif 246 247 248 /* 249 @@ LUA_PROMPT is the default prompt used by stand-alone Lua. 250 @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua. 251 ** CHANGE them if you want different prompts. (You can also change the 252 ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.) 253 */ 254 #define LUA_PROMPT "> " 255 #define LUA_PROMPT2 ">> " 256 257 258 /* 259 @@ LUA_PROGNAME is the default name for the stand-alone Lua program. 260 ** CHANGE it if your stand-alone interpreter has a different name and 261 ** your system is not able to detect that name automatically. 262 */ 263 #define LUA_PROGNAME "lua" 264 265 266 /* 267 @@ LUA_MAXINPUT is the maximum length for an input line in the 268 @* stand-alone interpreter. 269 ** CHANGE it if you need longer lines. 270 */ 271 #define LUA_MAXINPUT 512 272 273 274 /* 275 @@ lua_readline defines how to show a prompt and then read a line from 276 @* the standard input. 277 @@ lua_saveline defines how to "save" a read line in a "history". 278 @@ lua_freeline defines how to free a line read by lua_readline. 279 ** CHANGE them if you want to improve this functionality (e.g., by using 280 ** GNU readline and history facilities). 281 */ 282 #if defined(LUA_USE_READLINE) 283 #include <stdio.h> 284 #include <readline/readline.h> 285 #include <readline/history.h> 286 #define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) 287 #define lua_saveline(L,idx) \ 288 if (lua_strlen(L,idx) > 0) /* non-empty line? */ \ 289 add_history(lua_tostring(L, idx)); /* add it to history */ 290 #define lua_freeline(L,b) ((void)L, free(b)) 291 #else 292 #define lua_readline(L,b,p) \ 293 ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ 294 fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ 295 #define lua_saveline(L,idx) { (void)L; (void)idx; } 296 #define lua_freeline(L,b) { (void)L; (void)b; } 297 #endif 298 299 #endif 300 301 /* }================================================================== */ 302 303 304 /* 305 @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles 306 @* as a percentage. 307 ** CHANGE it if you want the GC to run faster or slower (higher values 308 ** mean larger pauses which mean slower collection.) You can also change 309 ** this value dynamically. 310 */ 311 #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */ 312 313 314 /* 315 @@ LUAI_GCMUL defines the default speed of garbage collection relative to 316 @* memory allocation as a percentage. 317 ** CHANGE it if you want to change the granularity of the garbage 318 ** collection. (Higher values mean coarser collections. 0 represents 319 ** infinity, where each step performs a full collection.) You can also 320 ** change this value dynamically. 321 */ 322 #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ 323 324 325 326 /* 327 @@ LUA_COMPAT_GETN controls compatibility with old getn behavior. 328 ** CHANGE it (define it) if you want exact compatibility with the 329 ** behavior of setn/getn in Lua 5.0. 330 */ 331 #undef LUA_COMPAT_GETN 332 333 /* 334 @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib. 335 ** CHANGE it to undefined as soon as you do not need a global 'loadlib' 336 ** function (the function is still available as 'package.loadlib'). 337 */ 338 #undef LUA_COMPAT_LOADLIB 339 340 /* 341 @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature. 342 ** CHANGE it to undefined as soon as your programs use only '...' to 343 ** access vararg parameters (instead of the old 'arg' table). 344 */ 345 #define LUA_COMPAT_VARARG 346 347 /* 348 @@ LUA_COMPAT_MOD controls compatibility with old math.mod function. 349 ** CHANGE it to undefined as soon as your programs use 'math.fmod' or 350 ** the new '%' operator instead of 'math.mod'. 351 */ 352 #define LUA_COMPAT_MOD 353 354 /* 355 @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting 356 @* facility. 357 ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn 358 ** off the advisory error when nesting [[...]]. 359 */ 360 #define LUA_COMPAT_LSTR 1 361 362 /* 363 @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name. 364 ** CHANGE it to undefined as soon as you rename 'string.gfind' to 365 ** 'string.gmatch'. 366 */ 367 #define LUA_COMPAT_GFIND 368 369 /* 370 @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib' 371 @* behavior. 372 ** CHANGE it to undefined as soon as you replace to 'luaL_register' 373 ** your uses of 'luaL_openlib' 374 */ 375 #define LUA_COMPAT_OPENLIB 376 377 378 379 /* 380 @@ luai_apicheck is the assert macro used by the Lua-C API. 381 ** CHANGE luai_apicheck if you want Lua to perform some checks in the 382 ** parameters it gets from API calls. This may slow down the interpreter 383 ** a bit, but may be quite useful when debugging C code that interfaces 384 ** with Lua. A useful redefinition is to use assert.h. 385 */ 386 #if defined(LUA_USE_APICHECK) 387 #include <assert.h> 388 #define luai_apicheck(L,o) { (void)L; assert(o); } 389 #else 390 #define luai_apicheck(L,o) { (void)L; } 391 #endif 392 393 394 /* 395 @@ LUAI_BITSINT defines the number of bits in an int. 396 ** CHANGE here if Lua cannot automatically detect the number of bits of 397 ** your machine. Probably you do not need to change this. 398 */ 399 /* avoid overflows in comparison */ 400 #if INT_MAX-20 < 32760 401 #define LUAI_BITSINT 16 402 #elif INT_MAX > 2147483640L 403 /* int has at least 32 bits */ 404 #define LUAI_BITSINT 32 405 #else 406 #error "you must define LUA_BITSINT with number of bits in an integer" 407 #endif 408 409 410 /* 411 @@ LUAI_UINT32 is an unsigned integer with at least 32 bits. 412 @@ LUAI_INT32 is an signed integer with at least 32 bits. 413 @@ LUAI_UMEM is an unsigned integer big enough to count the total 414 @* memory used by Lua. 415 @@ LUAI_MEM is a signed integer big enough to count the total memory 416 @* used by Lua. 417 ** CHANGE here if for some weird reason the default definitions are not 418 ** good enough for your machine. (The definitions in the 'else' 419 ** part always works, but may waste space on machines with 64-bit 420 ** longs.) Probably you do not need to change this. 421 */ 422 #if LUAI_BITSINT >= 32 423 #define LUAI_UINT32 unsigned int 424 #define LUAI_INT32 int 425 #define LUAI_MAXINT32 INT_MAX 426 #define LUAI_UMEM size_t 427 #define LUAI_MEM ptrdiff_t 428 #else 429 /* 16-bit ints */ 430 #define LUAI_UINT32 unsigned long 431 #define LUAI_INT32 long 432 #define LUAI_MAXINT32 LONG_MAX 433 #define LUAI_UMEM unsigned long 434 #define LUAI_MEM long 435 #endif 436 437 438 /* 439 @@ LUAI_MAXCALLS limits the number of nested calls. 440 ** CHANGE it if you need really deep recursive calls. This limit is 441 ** arbitrary; its only purpose is to stop infinite recursion before 442 ** exhausting memory. 443 */ 444 #define LUAI_MAXCALLS 20000 445 446 447 /* 448 @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function 449 @* can use. 450 ** CHANGE it if you need lots of (Lua) stack space for your C 451 ** functions. This limit is arbitrary; its only purpose is to stop C 452 ** functions to consume unlimited stack space. (must be smaller than 453 ** -LUA_REGISTRYINDEX) 454 */ 455 #define LUAI_MAXCSTACK 8000 456 457 458 459 /* 460 ** {================================================================== 461 ** CHANGE (to smaller values) the following definitions if your system 462 ** has a small C stack. (Or you may want to change them to larger 463 ** values if your system has a large C stack and these limits are 464 ** too rigid for you.) Some of these constants control the size of 465 ** stack-allocated arrays used by the compiler or the interpreter, while 466 ** others limit the maximum number of recursive calls that the compiler 467 ** or the interpreter can perform. Values too large may cause a C stack 468 ** overflow for some forms of deep constructs. 469 ** =================================================================== 470 */ 471 472 473 /* 474 @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and 475 @* syntactical nested non-terminals in a program. 476 */ 477 #define LUAI_MAXCCALLS 200 478 479 480 /* 481 @@ LUAI_MAXVARS is the maximum number of local variables per function 482 @* (must be smaller than 250). 483 */ 484 #define LUAI_MAXVARS 200 485 486 487 /* 488 @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function 489 @* (must be smaller than 250). 490 */ 491 #define LUAI_MAXUPVALUES 60 492 493 494 /* 495 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 496 */ 497 #define LUAL_BUFFERSIZE BUFSIZ 498 499 /* }================================================================== */ 500 501 502 503 504 /* 505 ** {================================================================== 506 @@ LUA_NUMBER is the type of numbers in Lua. 507 ** CHANGE the following definitions only if you want to build Lua 508 ** with a number type different from double. You may also need to 509 ** change lua_number2int & lua_number2integer. 510 ** =================================================================== 511 */ 512 513 #define LUA_NUMBER_DOUBLE 514 #define LUA_NUMBER double 515 516 /* 517 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' 518 @* over a number. 519 */ 520 #define LUAI_UACNUMBER double 521 522 523 /* 524 @@ LUA_NUMBER_SCAN is the format for reading numbers. 525 @@ LUA_NUMBER_FMT is the format for writing numbers. 526 @@ lua_number2str converts a number to a string. 527 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. 528 @@ lua_str2number converts a string to a number. 529 */ 530 #define LUA_NUMBER_SCAN "%lf" 531 #define LUA_NUMBER_FMT "%.14g" 532 #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) 533 #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ 534 #define lua_str2number(s,p) strtod((s), (p)) 535 536 537 /* 538 @@ The luai_num* macros define the primitive operations over numbers. 539 */ 540 #if defined(LUA_CORE) 541 #include <math.h> 542 #define luai_numadd(a,b) ((a)+(b)) 543 #define luai_numsub(a,b) ((a)-(b)) 544 #define luai_nummul(a,b) ((a)*(b)) 545 #define luai_numdiv(a,b) ((a)/(b)) 546 #define luai_nummod(a,b) ((a) - floor((a)/(b))*(b)) 547 #define luai_numpow(a,b) (pow(a,b)) 548 #define luai_numunm(a) (-(a)) 549 #define luai_numeq(a,b) ((a)==(b)) 550 #define luai_numlt(a,b) ((a)<(b)) 551 #define luai_numle(a,b) ((a)<=(b)) 552 #define luai_numisnan(a) (!luai_numeq((a), (a))) 553 #endif 554 555 556 /* 557 @@ lua_number2int is a macro to convert lua_Number to int. 558 @@ lua_number2integer is a macro to convert lua_Number to lua_Integer. 559 ** CHANGE them if you know a faster way to convert a lua_Number to 560 ** int (with any rounding method and without throwing errors) in your 561 ** system. In Pentium machines, a naive typecast from double to int 562 ** in C is extremely slow, so any alternative is worth trying. 563 */ 564 565 /* On a Pentium, resort to a trick */ 566 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \ 567 (defined(__i386) || defined (_M_IX86) || defined(__i386__)) 568 569 /* On a Microsoft compiler, use assembler */ 570 #if defined(_MSC_VER) 571 572 #define lua_number2int(i,d) __asm fld d __asm fistp i 573 #define lua_number2integer(i,n) lua_number2int(i, n) 574 575 /* the next trick should work on any Pentium, but sometimes clashes 576 with a DirectX idiosyncrasy */ 577 #else 578 579 union luai_Cast { double l_d; long l_l; }; 580 #define lua_number2int(i,d) \ 581 { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; } 582 #define lua_number2integer(i,n) lua_number2int(i, n) 583 584 #endif 585 586 587 /* this option always works, but may be slow */ 588 #else 589 #define lua_number2int(i,d) ((i)=(int)(d)) 590 #define lua_number2integer(i,d) ((i)=(lua_Integer)(d)) 591 592 #endif 593 594 /* }================================================================== */ 595 596 597 /* 598 @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment. 599 ** CHANGE it if your system requires alignments larger than double. (For 600 ** instance, if your system supports long doubles and they must be 601 ** aligned in 16-byte boundaries, then you should add long double in the 602 ** union.) Probably you do not need to change this. 603 */ 604 #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } 605 606 607 /* 608 @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling. 609 ** CHANGE them if you prefer to use longjmp/setjmp even with C++ 610 ** or if want/don't to use _longjmp/_setjmp instead of regular 611 ** longjmp/setjmp. By default, Lua handles errors with exceptions when 612 ** compiling as C++ code, with _longjmp/_setjmp when asked to use them, 613 ** and with longjmp/setjmp otherwise. 614 */ 615 #if defined(__cplusplus) 616 /* C++ exceptions */ 617 #define LUAI_THROW(L,c) throw(c) 618 #define LUAI_TRY(L,c,a) try { a } catch(...) \ 619 { if ((c)->status == 0) (c)->status = -1; } 620 #define luai_jmpbuf int /* dummy variable */ 621 622 #elif defined(LUA_USE_ULONGJMP) 623 /* in Unix, try _longjmp/_setjmp (more efficient) */ 624 #define LUAI_THROW(L,c) _longjmp((c)->b, 1) 625 #define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } 626 #define luai_jmpbuf jmp_buf 627 628 #else 629 /* default handling with long jumps */ 630 #define LUAI_THROW(L,c) longjmp((c)->b, 1) 631 #define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } 632 #define luai_jmpbuf jmp_buf 633 634 #endif 635 636 637 /* 638 @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern 639 @* can do during pattern-matching. 640 ** CHANGE it if you need more captures. This limit is arbitrary. 641 */ 642 #define LUA_MAXCAPTURES 32 643 644 645 /* 646 @@ lua_tmpnam is the function that the OS library uses to create a 647 @* temporary name. 648 @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam. 649 ** CHANGE them if you have an alternative to tmpnam (which is considered 650 ** insecure) or if you want the original tmpnam anyway. By default, Lua 651 ** uses tmpnam except when POSIX is available, where it uses mkstemp. 652 */ 653 #if defined(loslib_c) || defined(luaall_c) 654 655 #if defined(LUA_USE_MKSTEMP) 656 #include <unistd.h> 657 #define LUA_TMPNAMBUFSIZE 32 658 #define lua_tmpnam(b,e) { \ 659 strcpy(b, "/tmp/lua_XXXXXX"); \ 660 e = mkstemp(b); \ 661 if (e != -1) close(e); \ 662 e = (e == -1); } 663 664 #else 665 #define LUA_TMPNAMBUFSIZE L_tmpnam 666 #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } 667 #endif 668 669 #endif 670 671 672 /* 673 @@ lua_popen spawns a new process connected to the current one through 674 @* the file streams. 675 ** CHANGE it if you have a way to implement it in your system. 676 */ 677 #if defined(LUA_USE_POPEN) 678 679 #define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m)) 680 #define lua_pclose(L,file) ((void)L, (pclose(file) != -1)) 681 682 #elif defined(LUA_WIN) 683 684 #define lua_popen(L,c,m) ((void)L, _popen(c,m)) 685 #define lua_pclose(L,file) ((void)L, (_pclose(file) != -1)) 686 687 #else 688 689 #define lua_popen(L,c,m) ((void)((void)c, m), \ 690 luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0) 691 #define lua_pclose(L,file) ((void)((void)L, file), 0) 692 693 #endif 694 695 /* 696 @@ LUA_DL_* define which dynamic-library system Lua should use. 697 ** CHANGE here if Lua has problems choosing the appropriate 698 ** dynamic-library system for your platform (either Windows' DLL, Mac's 699 ** dyld, or Unix's dlopen). If your system is some kind of Unix, there 700 ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for 701 ** it. To use dlopen you also need to adapt the src/Makefile (probably 702 ** adding -ldl to the linker options), so Lua does not select it 703 ** automatically. (When you change the makefile to add -ldl, you must 704 ** also add -DLUA_USE_DLOPEN.) 705 ** If you do not want any kind of dynamic library, undefine all these 706 ** options. 707 ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD. 708 */ 709 #if defined(LUA_USE_DLOPEN) 710 #define LUA_DL_DLOPEN 711 #endif 712 713 #if defined(LUA_WIN) 714 #define LUA_DL_DLL 715 #endif 716 717 718 /* 719 @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State 720 @* (the data goes just *before* the lua_State pointer). 721 ** CHANGE (define) this if you really need that. This value must be 722 ** a multiple of the maximum alignment required for your machine. 723 */ 724 #define LUAI_EXTRASPACE 0 725 726 727 /* 728 @@ luai_userstate* allow user-specific actions on threads. 729 ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something 730 ** extra when a thread is created/deleted/resumed/yielded. 731 */ 732 #define luai_userstateopen(L) ((void)L) 733 #define luai_userstateclose(L) ((void)L) 734 #define luai_userstatethread(L,L1) ((void)L) 735 #define luai_userstatefree(L) ((void)L) 736 #define luai_userstateresume(L,n) ((void)L) 737 #define luai_userstateyield(L,n) ((void)L) 738 739 740 /* 741 @@ LUA_INTFRMLEN is the length modifier for integer conversions 742 @* in 'string.format'. 743 @@ LUA_INTFRM_T is the integer type correspoding to the previous length 744 @* modifier. 745 ** CHANGE them if your system supports long long or does not support long. 746 */ 747 748 #if defined(LUA_USELONGLONG) 749 750 #define LUA_INTFRMLEN "ll" 751 #define LUA_INTFRM_T long long 752 753 #else 754 755 #define LUA_INTFRMLEN "l" 756 #define LUA_INTFRM_T long 757 758 #endif 759 760 761 762 /* =================================================================== */ 763 764 /* 765 ** Local configuration. You can use this space to add your redefinitions 766 ** without modifying the main part of the file. 767 */ 768 769 770 771 #endif 772 773