luasandbox  1.4.0
Generic Lua sandbox for dynamic data analysis
luaconf.h
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1 /*
2 ** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 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 and LUA_CPATH are the names of the environment variables that
64 @* Lua check to set its paths.
65 @@ LUA_INIT is the name of the environment variable that Lua
66 @* checks for initialization code.
67 ** CHANGE them if you want different names.
68 */
69 #define LUA_PATH "LUA_PATH"
70 #define LUA_CPATH "LUA_CPATH"
71 #define LUA_INIT "LUA_INIT"
72 
73 
74 /*
75 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
76 @* Lua libraries.
77 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
78 @* C libraries.
79 ** CHANGE them if your machine has a non-conventional directory
80 ** hierarchy or if you want to install your libraries in
81 ** non-conventional directories.
82 */
83 #if defined(_WIN32)
84 /*
85 ** In Windows, any exclamation mark ('!') in the path is replaced by the
86 ** path of the directory of the executable file of the current process.
87 */
88 #define LUA_LDIR "!\\lua\\"
89 #define LUA_CDIR "!\\"
90 #define LUA_PATH_DEFAULT \
91  ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
92  LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua"
93 #define LUA_CPATH_DEFAULT \
94  ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"
95 
96 #else
97 #define LUA_ROOT "/usr/local/"
98 #define LUA_LDIR LUA_ROOT "share/lua/5.1/"
99 #define LUA_CDIR LUA_ROOT "lib/lua/5.1/"
100 #define LUA_PATH_DEFAULT \
101  "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
102  LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua"
103 #define LUA_CPATH_DEFAULT \
104  "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
105 #endif
106 
107 
108 /*
109 @@ LUA_DIRSEP is the directory separator (for submodules).
110 ** CHANGE it if your machine does not use "/" as the directory separator
111 ** and is not Windows. (On Windows Lua automatically uses "\".)
112 */
113 #if defined(_WIN32)
114 #define LUA_DIRSEP "\\"
115 #else
116 #define LUA_DIRSEP "/"
117 #endif
118 
119 
120 /*
121 @@ LUA_PATHSEP is the character that separates templates in a path.
122 @@ LUA_PATH_MARK is the string that marks the substitution points in a
123 @* template.
124 @@ LUA_EXECDIR in a Windows path is replaced by the executable's
125 @* directory.
126 @@ LUA_IGMARK is a mark to ignore all before it when bulding the
127 @* luaopen_ function name.
128 ** CHANGE them if for some reason your system cannot use those
129 ** characters. (E.g., if one of those characters is a common character
130 ** in file/directory names.) Probably you do not need to change them.
131 */
132 #define LUA_PATHSEP ";"
133 #define LUA_PATH_MARK "?"
134 #define LUA_EXECDIR "!"
135 #define LUA_IGMARK "-"
136 
137 
138 /*
139 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
140 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
141 ** machines, ptrdiff_t gives a good choice between int or long.)
142 */
143 #define LUA_INTEGER ptrdiff_t
144 
145 
146 /*
147 @@ LUA_API is a mark for all core API functions.
148 @@ LUALIB_API is a mark for all standard library functions.
149 ** CHANGE them if you need to define those functions in some special way.
150 ** For instance, if you want to create one Windows DLL with the core and
151 ** the libraries, you may want to use the following definition (define
152 ** LUA_BUILD_AS_DLL to get it).
153 */
154 #if defined(LUA_BUILD_AS_DLL)
155 
156 #if defined(LUA_CORE) || defined(LUA_LIB)
157 #define LUA_API __declspec(dllexport)
158 #else
159 #define LUA_API __declspec(dllimport)
160 #endif
161 
162 #else
163 #if __GNUC__ >= 4
164 #define LUA_API __attribute__ ((visibility ("default")))
165 #else
166 #define LUA_API
167 #endif
168 #endif
169 
170 /* more often than not the libs go together with the core */
171 #define LUALIB_API LUA_API
172 
173 
174 /*
175 @@ LUAI_FUNC is a mark for all extern functions that are not to be
176 @* exported to outside modules.
177 @@ LUAI_DATA is a mark for all extern (const) variables that are not to
178 @* be exported to outside modules.
179 ** CHANGE them if you need to mark them in some special way. Elf/gcc
180 ** (versions 3.2 and later) mark them as "hidden" to optimize access
181 ** when Lua is compiled as a shared library.
182 */
183 #if defined(luaall_c)
184 #define LUAI_FUNC static
185 #define LUAI_DATA /* empty */
186 
187 #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
188  defined(__ELF__)
189 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern
190 #define LUAI_DATA LUAI_FUNC
191 
192 #else
193 #define LUAI_FUNC extern
194 #define LUAI_DATA extern
195 #endif
196 
197 
198 
199 /*
200 @@ LUA_QL describes how error messages quote program elements.
201 ** CHANGE it if you want a different appearance.
202 */
203 #define LUA_QL(x) "'" x "'"
204 #define LUA_QS LUA_QL("%s")
205 
206 
207 /*
208 @@ LUA_IDSIZE gives the maximum size for the description of the source
209 @* of a function in debug information.
210 ** CHANGE it if you want a different size.
211 */
212 #define LUA_IDSIZE 60
213 
214 
215 /*
216 ** {==================================================================
217 ** Stand-alone configuration
218 ** ===================================================================
219 */
220 
221 #if defined(lua_c) || defined(luaall_c)
222 
223 /*
224 @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
225 @* is, whether we're running lua interactively).
226 ** CHANGE it if you have a better definition for non-POSIX/non-Windows
227 ** systems.
228 */
229 #if defined(LUA_USE_ISATTY)
230 #include <unistd.h>
231 #define lua_stdin_is_tty() isatty(0)
232 #elif defined(LUA_WIN)
233 #include <io.h>
234 #include <stdio.h>
235 #define lua_stdin_is_tty() _isatty(_fileno(stdin))
236 #else
237 #define lua_stdin_is_tty() 1 /* assume stdin is a tty */
238 #endif
239 
240 
241 /*
242 @@ LUA_PROMPT is the default prompt used by stand-alone Lua.
243 @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
244 ** CHANGE them if you want different prompts. (You can also change the
245 ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
246 */
247 #define LUA_PROMPT "> "
248 #define LUA_PROMPT2 ">> "
249 
250 
251 /*
252 @@ LUA_PROGNAME is the default name for the stand-alone Lua program.
253 ** CHANGE it if your stand-alone interpreter has a different name and
254 ** your system is not able to detect that name automatically.
255 */
256 #define LUA_PROGNAME "lua"
257 
258 
259 /*
260 @@ LUA_MAXINPUT is the maximum length for an input line in the
261 @* stand-alone interpreter.
262 ** CHANGE it if you need longer lines.
263 */
264 #define LUA_MAXINPUT 512
265 
266 
267 /*
268 @@ lua_readline defines how to show a prompt and then read a line from
269 @* the standard input.
270 @@ lua_saveline defines how to "save" a read line in a "history".
271 @@ lua_freeline defines how to free a line read by lua_readline.
272 ** CHANGE them if you want to improve this functionality (e.g., by using
273 ** GNU readline and history facilities).
274 */
275 #if defined(LUA_USE_READLINE)
276 #include <stdio.h>
277 #include <readline/readline.h>
278 #include <readline/history.h>
279 #define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
280 #define lua_saveline(L,idx) \
281  if (lua_strlen(L,idx) > 0) /* non-empty line? */ \
282  add_history(lua_tostring(L, idx)); /* add it to history */
283 #define lua_freeline(L,b) ((void)L, free(b))
284 #else
285 #define lua_readline(L,b,p) \
286  ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
287  fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
288 #define lua_saveline(L,idx) { (void)L; (void)idx; }
289 #define lua_freeline(L,b) { (void)L; (void)b; }
290 #endif
291 
292 #endif
293 
294 /* }================================================================== */
295 
296 
297 /*
298 @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
299 @* as a percentage.
300 ** CHANGE it if you want the GC to run faster or slower (higher values
301 ** mean larger pauses which mean slower collection.) You can also change
302 ** this value dynamically.
303 */
304 #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */
305 
306 
307 /*
308 @@ LUAI_GCMUL defines the default speed of garbage collection relative to
309 @* memory allocation as a percentage.
310 ** CHANGE it if you want to change the granularity of the garbage
311 ** collection. (Higher values mean coarser collections. 0 represents
312 ** infinity, where each step performs a full collection.) You can also
313 ** change this value dynamically.
314 */
315 #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
316 
317 
318 
319 /*
320 @@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
321 ** CHANGE it (define it) if you want exact compatibility with the
322 ** behavior of setn/getn in Lua 5.0.
323 */
324 #undef LUA_COMPAT_GETN
325 
326 /*
327 @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
328 ** CHANGE it to undefined as soon as you do not need a global 'loadlib'
329 ** function (the function is still available as 'package.loadlib').
330 */
331 #undef LUA_COMPAT_LOADLIB
332 
333 /*
334 @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
335 ** CHANGE it to undefined as soon as your programs use only '...' to
336 ** access vararg parameters (instead of the old 'arg' table).
337 */
338 #define LUA_COMPAT_VARARG
339 
340 /*
341 @@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
342 ** CHANGE it to undefined as soon as your programs use 'math.fmod' or
343 ** the new '%' operator instead of 'math.mod'.
344 */
345 #define LUA_COMPAT_MOD
346 
347 /*
348 @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
349 @* facility.
350 ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
351 ** off the advisory error when nesting [[...]].
352 */
353 #define LUA_COMPAT_LSTR 1
354 
355 /*
356 @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
357 ** CHANGE it to undefined as soon as you rename 'string.gfind' to
358 ** 'string.gmatch'.
359 */
360 #define LUA_COMPAT_GFIND
361 
362 /*
363 @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
364 @* behavior.
365 ** CHANGE it to undefined as soon as you replace to 'luaL_register'
366 ** your uses of 'luaL_openlib'
367 */
368 #define LUA_COMPAT_OPENLIB
369 
370 
371 
372 /*
373 @@ luai_apicheck is the assert macro used by the Lua-C API.
374 ** CHANGE luai_apicheck if you want Lua to perform some checks in the
375 ** parameters it gets from API calls. This may slow down the interpreter
376 ** a bit, but may be quite useful when debugging C code that interfaces
377 ** with Lua. A useful redefinition is to use assert.h.
378 */
379 #if defined(LUA_USE_APICHECK)
380 #include <assert.h>
381 #define luai_apicheck(L,o) { (void)L; assert(o); }
382 #else
383 #define luai_apicheck(L,o) { (void)L; }
384 #endif
385 
386 
387 /*
388 @@ LUAI_BITSINT defines the number of bits in an int.
389 ** CHANGE here if Lua cannot automatically detect the number of bits of
390 ** your machine. Probably you do not need to change this.
391 */
392 /* avoid overflows in comparison */
393 #if INT_MAX-20 < 32760
394 #define LUAI_BITSINT 16
395 #elif INT_MAX > 2147483640L
396 /* int has at least 32 bits */
397 #define LUAI_BITSINT 32
398 #else
399 #error "you must define LUA_BITSINT with number of bits in an integer"
400 #endif
401 
402 
403 /*
404 @@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
405 @@ LUAI_INT32 is an signed integer with at least 32 bits.
406 @@ LUAI_UMEM is an unsigned integer big enough to count the total
407 @* memory used by Lua.
408 @@ LUAI_MEM is a signed integer big enough to count the total memory
409 @* used by Lua.
410 ** CHANGE here if for some weird reason the default definitions are not
411 ** good enough for your machine. (The definitions in the 'else'
412 ** part always works, but may waste space on machines with 64-bit
413 ** longs.) Probably you do not need to change this.
414 */
415 #if LUAI_BITSINT >= 32
416 #define LUAI_UINT32 unsigned int
417 #define LUAI_INT32 int
418 #define LUAI_MAXINT32 INT_MAX
419 #define LUAI_UMEM size_t
420 #define LUAI_MEM ptrdiff_t
421 #else
422 /* 16-bit ints */
423 #define LUAI_UINT32 unsigned long
424 #define LUAI_INT32 long
425 #define LUAI_MAXINT32 LONG_MAX
426 #define LUAI_UMEM unsigned long
427 #define LUAI_MEM long
428 #endif
429 
430 
431 /*
432 @@ LUAI_MAXCALLS limits the number of nested calls.
433 ** CHANGE it if you need really deep recursive calls. This limit is
434 ** arbitrary; its only purpose is to stop infinite recursion before
435 ** exhausting memory.
436 */
437 #define LUAI_MAXCALLS 20000
438 
439 
440 /*
441 @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
442 @* can use.
443 ** CHANGE it if you need lots of (Lua) stack space for your C
444 ** functions. This limit is arbitrary; its only purpose is to stop C
445 ** functions to consume unlimited stack space. (must be smaller than
446 ** -LUA_REGISTRYINDEX)
447 */
448 #define LUAI_MAXCSTACK 8000
449 
450 
451 
452 /*
453 ** {==================================================================
454 ** CHANGE (to smaller values) the following definitions if your system
455 ** has a small C stack. (Or you may want to change them to larger
456 ** values if your system has a large C stack and these limits are
457 ** too rigid for you.) Some of these constants control the size of
458 ** stack-allocated arrays used by the compiler or the interpreter, while
459 ** others limit the maximum number of recursive calls that the compiler
460 ** or the interpreter can perform. Values too large may cause a C stack
461 ** overflow for some forms of deep constructs.
462 ** ===================================================================
463 */
464 
465 
466 /*
467 @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
468 @* syntactical nested non-terminals in a program.
469 */
470 #define LUAI_MAXCCALLS 200
471 
472 
473 /*
474 @@ LUAI_MAXVARS is the maximum number of local variables per function
475 @* (must be smaller than 250).
476 */
477 #define LUAI_MAXVARS 200
478 
479 
480 /*
481 @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function
482 @* (must be smaller than 250).
483 */
484 #define LUAI_MAXUPVALUES 60
485 
486 
487 /*
488 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
489 */
490 #define LUAL_BUFFERSIZE BUFSIZ
491 
492 /* }================================================================== */
493 
494 
495 
496 
497 /*
498 ** {==================================================================
499 @@ LUA_NUMBER is the type of numbers in Lua.
500 ** CHANGE the following definitions only if you want to build Lua
501 ** with a number type different from double. You may also need to
502 ** change lua_number2int & lua_number2integer.
503 ** ===================================================================
504 */
505 
506 #define LUA_NUMBER_DOUBLE
507 #define LUA_NUMBER double
508 
509 /*
510 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
511 @* over a number.
512 */
513 #define LUAI_UACNUMBER double
514 
515 
516 /*
517 @@ LUA_NUMBER_SCAN is the format for reading numbers.
518 @@ LUA_NUMBER_FMT is the format for writing numbers.
519 @@ lua_number2str converts a number to a string.
520 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
521 @@ lua_str2number converts a string to a number.
522 */
523 #define LUA_NUMBER_SCAN "%lf"
524 #define LUA_NUMBER_FMT "%.14g"
525 #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
526 #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
527 #define lua_str2number(s,p) strtod((s), (p))
528 
529 
530 /*
531 @@ The luai_num* macros define the primitive operations over numbers.
532 */
533 #if defined(LUA_CORE)
534 #include <math.h>
535 #define luai_numadd(a,b) ((a)+(b))
536 #define luai_numsub(a,b) ((a)-(b))
537 #define luai_nummul(a,b) ((a)*(b))
538 #define luai_numdiv(a,b) ((a)/(b))
539 #define luai_nummod(a,b) ((a) - floor((a)/(b))*(b))
540 #define luai_numpow(a,b) (pow(a,b))
541 #define luai_numunm(a) (-(a))
542 #define luai_numeq(a,b) ((a)==(b))
543 #define luai_numlt(a,b) ((a)<(b))
544 #define luai_numle(a,b) ((a)<=(b))
545 #define luai_numisnan(a) (!luai_numeq((a), (a)))
546 #endif
547 
548 
549 /*
550 @@ lua_number2int is a macro to convert lua_Number to int.
551 @@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
552 ** CHANGE them if you know a faster way to convert a lua_Number to
553 ** int (with any rounding method and without throwing errors) in your
554 ** system. In Pentium machines, a naive typecast from double to int
555 ** in C is extremely slow, so any alternative is worth trying.
556 */
557 
558 /* On a Pentium, resort to a trick */
559 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
560  (defined(__i386) || defined (_M_IX86) || defined(__i386__))
561 
562 /* On a Microsoft compiler, use assembler */
563 #if defined(_MSC_VER)
564 
565 #define lua_number2int(i,d) __asm fld d __asm fistp i
566 #define lua_number2integer(i,n) lua_number2int(i, n)
567 
568 /* the next trick should work on any Pentium, but sometimes clashes
569  with a DirectX idiosyncrasy */
570 #else
571 
572 union luai_Cast { double l_d; long l_l; };
573 #define lua_number2int(i,d) \
574  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
575 #define lua_number2integer(i,n) lua_number2int(i, n)
576 
577 #endif
578 
579 
580 /* this option always works, but may be slow */
581 #else
582 #define lua_number2int(i,d) ((i)=(int)(d))
583 #define lua_number2integer(i,d) ((i)=(lua_Integer)(d))
584 
585 #endif
586 
587 /* }================================================================== */
588 
589 
590 /*
591 @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
592 ** CHANGE it if your system requires alignments larger than double. (For
593 ** instance, if your system supports long doubles and they must be
594 ** aligned in 16-byte boundaries, then you should add long double in the
595 ** union.) Probably you do not need to change this.
596 */
597 #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; }
598 
599 
600 /*
601 @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
602 ** CHANGE them if you prefer to use longjmp/setjmp even with C++
603 ** or if want/don't to use _longjmp/_setjmp instead of regular
604 ** longjmp/setjmp. By default, Lua handles errors with exceptions when
605 ** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
606 ** and with longjmp/setjmp otherwise.
607 */
608 #if defined(__cplusplus)
609 /* C++ exceptions */
610 #define LUAI_THROW(L,c) throw(c)
611 #define LUAI_TRY(L,c,a) try { a } catch(...) \
612  { if ((c)->status == 0) (c)->status = -1; }
613 #define luai_jmpbuf int /* dummy variable */
614 
615 #elif defined(LUA_USE_ULONGJMP)
616 /* in Unix, try _longjmp/_setjmp (more efficient) */
617 #define LUAI_THROW(L,c) _longjmp((c)->b, 1)
618 #define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a }
619 #define luai_jmpbuf jmp_buf
620 
621 #else
622 /* default handling with long jumps */
623 #define LUAI_THROW(L,c) longjmp((c)->b, 1)
624 #define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
625 #define luai_jmpbuf jmp_buf
626 
627 #endif
628 
629 
630 /*
631 @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
632 @* can do during pattern-matching.
633 ** CHANGE it if you need more captures. This limit is arbitrary.
634 */
635 #define LUA_MAXCAPTURES 32
636 
637 
638 /*
639 @@ lua_tmpnam is the function that the OS library uses to create a
640 @* temporary name.
641 @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
642 ** CHANGE them if you have an alternative to tmpnam (which is considered
643 ** insecure) or if you want the original tmpnam anyway. By default, Lua
644 ** uses tmpnam except when POSIX is available, where it uses mkstemp.
645 */
646 #if defined(loslib_c) || defined(luaall_c)
647 
648 #if defined(LUA_USE_MKSTEMP)
649 #include <unistd.h>
650 #define LUA_TMPNAMBUFSIZE 32
651 #define lua_tmpnam(b,e) { \
652  strcpy(b, "/tmp/lua_XXXXXX"); \
653  e = mkstemp(b); \
654  if (e != -1) close(e); \
655  e = (e == -1); }
656 
657 #else
658 #define LUA_TMPNAMBUFSIZE L_tmpnam
659 #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); }
660 #endif
661 
662 #endif
663 
664 
665 /*
666 @@ lua_popen spawns a new process connected to the current one through
667 @* the file streams.
668 ** CHANGE it if you have a way to implement it in your system.
669 */
670 #if defined(LUA_USE_POPEN)
671 
672 #define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m))
673 #define lua_pclose(L,file) ((void)L, (pclose(file) != -1))
674 
675 #elif defined(LUA_WIN)
676 
677 #define lua_popen(L,c,m) ((void)L, _popen(c,m))
678 #define lua_pclose(L,file) ((void)L, (_pclose(file) != -1))
679 
680 #else
681 
682 #define lua_popen(L,c,m) ((void)((void)c, m), \
683  luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
684 #define lua_pclose(L,file) ((void)((void)L, file), 0)
685 
686 #endif
687 
688 /*
689 @@ LUA_DL_* define which dynamic-library system Lua should use.
690 ** CHANGE here if Lua has problems choosing the appropriate
691 ** dynamic-library system for your platform (either Windows' DLL, Mac's
692 ** dyld, or Unix's dlopen). If your system is some kind of Unix, there
693 ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for
694 ** it. To use dlopen you also need to adapt the src/Makefile (probably
695 ** adding -ldl to the linker options), so Lua does not select it
696 ** automatically. (When you change the makefile to add -ldl, you must
697 ** also add -DLUA_USE_DLOPEN.)
698 ** If you do not want any kind of dynamic library, undefine all these
699 ** options.
700 ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD.
701 */
702 #if defined(LUA_USE_DLOPEN)
703 #define LUA_DL_DLOPEN
704 #endif
705 
706 #if defined(LUA_WIN)
707 #define LUA_DL_DLL
708 #endif
709 
710 
711 /*
712 @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State
713 @* (the data goes just *before* the lua_State pointer).
714 ** CHANGE (define) this if you really need that. This value must be
715 ** a multiple of the maximum alignment required for your machine.
716 */
717 #define LUAI_EXTRASPACE 0
718 
719 
720 /*
721 @@ luai_userstate* allow user-specific actions on threads.
722 ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something
723 ** extra when a thread is created/deleted/resumed/yielded.
724 */
725 #define luai_userstateopen(L) ((void)L)
726 #define luai_userstateclose(L) ((void)L)
727 #define luai_userstatethread(L,L1) ((void)L)
728 #define luai_userstatefree(L) ((void)L)
729 #define luai_userstateresume(L,n) ((void)L)
730 #define luai_userstateyield(L,n) ((void)L)
731 
732 
733 /*
734 @@ LUA_INTFRMLEN is the length modifier for integer conversions
735 @* in 'string.format'.
736 @@ LUA_INTFRM_T is the integer type correspoding to the previous length
737 @* modifier.
738 ** CHANGE them if your system supports long long or does not support long.
739 */
740 
741 #if defined(LUA_USELONGLONG)
742 
743 #define LUA_INTFRMLEN "ll"
744 #define LUA_INTFRM_T long long
745 
746 #else
747 
748 #define LUA_INTFRMLEN "l"
749 #define LUA_INTFRM_T long
750 
751 #endif
752 
753 
754 
755 /* =================================================================== */
756 
757 /*
758 ** Local configuration. You can use this space to add your redefinitions
759 ** without modifying the main part of the file.
760 */
761 
762 
763 
764 #endif
765