source: trunk/include/luaconf.h @ 515

Revision 515, 22.0 KB checked in by reyalp, 5 years ago (diff)

set svn:eol-style and fix files that had mixed line endings. See http://chdk.setepontos.com/index.php/topic,2145.15.html

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1/*
2** $Id: luaconf.h,v 1.82.1.6 2008/01/18 17:07:48 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** Search for "@@" to find all configurable definitions.
17** ===================================================================
18*/
19
20
21/*
22@@ LUA_ANSI controls the use of non-ansi features.
23** CHANGE it (define it) if you want Lua to avoid the use of any
24** non-ansi feature or library.
25*/
26#if defined(__STRICT_ANSI__)
27#define LUA_ANSI
28#endif
29
30
31#if !defined(LUA_ANSI) && defined(_WIN32)
32#define LUA_WIN
33#endif
34
35#if defined(LUA_USE_LINUX)
36#define LUA_USE_POSIX
37#define LUA_USE_DLOPEN          /* needs an extra library: -ldl */
38#define LUA_USE_READLINE        /* needs some extra libraries */
39#endif
40
41#if defined(LUA_USE_MACOSX)
42#define LUA_USE_POSIX
43#define LUA_DL_DYLD             /* does not need extra library */
44#endif
45
46
47
48/*
49@@ LUA_USE_POSIX includes all functionallity listed as X/Open System
50@* Interfaces Extension (XSI).
51** CHANGE it (define it) if your system is XSI compatible.
52*/
53#if defined(LUA_USE_POSIX)
54#define LUA_USE_MKSTEMP
55#define LUA_USE_ISATTY
56#define LUA_USE_POPEN
57#define LUA_USE_ULONGJMP
58#endif
59
60
61/*
62@@ LUA_PATH and LUA_CPATH are the names of the environment variables that
63@* Lua check to set its paths.
64@@ LUA_INIT is the name of the environment variable that Lua
65@* checks for initialization code.
66** CHANGE them if you want different names.
67*/
68#define LUA_PATH        "LUA_PATH"
69#define LUA_CPATH       "LUA_CPATH"
70#define LUA_INIT        "LUA_INIT"
71
72
73/*
74@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
75@* Lua libraries.
76@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
77@* C libraries.
78** CHANGE them if your machine has a non-conventional directory
79** hierarchy or if you want to install your libraries in
80** non-conventional directories.
81*/
82#if defined(_WIN32)
83/*
84** In Windows, any exclamation mark ('!') in the path is replaced by the
85** path of the directory of the executable file of the current process.
86*/
87#define LUA_LDIR        "!\\lua\\"
88#define LUA_CDIR        "!\\"
89#define LUA_PATH_DEFAULT  \
90                ".\\?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
91                             LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua"
92#define LUA_CPATH_DEFAULT \
93        ".\\?.dll;"  LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"
94
95#else
96#define LUA_ROOT        "/usr/local/"
97#define LUA_LDIR        LUA_ROOT "share/lua/5.1/"
98#define LUA_CDIR        LUA_ROOT "lib/lua/5.1/"
99#define LUA_PATH_DEFAULT  \
100                "./?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
101                            LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"
102#define LUA_CPATH_DEFAULT \
103        "./?.so;"  LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
104#endif
105
106
107/*
108@@ LUA_DIRSEP is the directory separator (for submodules).
109** CHANGE it if your machine does not use "/" as the directory separator
110** and is not Windows. (On Windows Lua automatically uses "\".)
111*/
112#if defined(_WIN32)
113#define LUA_DIRSEP      "\\"
114#else
115#define LUA_DIRSEP      "/"
116#endif
117
118
119/*
120@@ LUA_PATHSEP is the character that separates templates in a path.
121@@ LUA_PATH_MARK is the string that marks the substitution points in a
122@* template.
123@@ LUA_EXECDIR in a Windows path is replaced by the executable's
124@* directory.
125@@ LUA_IGMARK is a mark to ignore all before it when bulding the
126@* luaopen_ function name.
127** CHANGE them if for some reason your system cannot use those
128** characters. (E.g., if one of those characters is a common character
129** in file/directory names.) Probably you do not need to change them.
130*/
131#define LUA_PATHSEP     ";"
132#define LUA_PATH_MARK   "?"
133#define LUA_EXECDIR     "!"
134#define LUA_IGMARK      "-"
135
136
137/*
138@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
139** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
140** machines, ptrdiff_t gives a good choice between int or long.)
141*/
142#define LUA_INTEGER     int
143
144
145/*
146@@ LUA_API is a mark for all core API functions.
147@@ LUALIB_API is a mark for all standard library functions.
148** CHANGE them if you need to define those functions in some special way.
149** For instance, if you want to create one Windows DLL with the core and
150** the libraries, you may want to use the following definition (define
151** LUA_BUILD_AS_DLL to get it).
152*/
153#if defined(LUA_BUILD_AS_DLL)
154
155#if defined(LUA_CORE) || defined(LUA_LIB)
156#define LUA_API __declspec(dllexport)
157#else
158#define LUA_API __declspec(dllimport)
159#endif
160
161#else
162
163#define LUA_API         extern
164
165#endif
166
167/* more often than not the libs go together with the core */
168#define LUALIB_API      LUA_API
169
170
171/*
172@@ LUAI_FUNC is a mark for all extern functions that are not to be
173@* exported to outside modules.
174@@ LUAI_DATA is a mark for all extern (const) variables that are not to
175@* be exported to outside modules.
176** CHANGE them if you need to mark them in some special way. Elf/gcc
177** (versions 3.2 and later) mark them as "hidden" to optimize access
178** when Lua is compiled as a shared library.
179*/
180#if defined(luaall_c)
181#define LUAI_FUNC       static
182#define LUAI_DATA       /* empty */
183
184#elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
185      defined(__ELF__)
186/* reyalp: hidden is irrelevant if not dynamically linked*/
187#if defined(HDK_VERSION)
188#define LUAI_FUNC       extern
189#else
190#define LUAI_FUNC       __attribute__((visibility("hidden"))) extern
191#endif
192#define LUAI_DATA       LUAI_FUNC
193
194#else
195#define LUAI_FUNC       extern
196#define LUAI_DATA       extern
197#endif
198
199
200
201/*
202@@ LUA_QL describes how error messages quote program elements.
203** CHANGE it if you want a different appearance.
204*/
205#define LUA_QL(x)       "'" x "'"
206#define LUA_QS          LUA_QL("%s")
207
208
209/*
210@@ LUA_IDSIZE gives the maximum size for the description of the source
211@* of a function in debug information.
212** CHANGE it if you want a different size.
213*/
214#define LUA_IDSIZE      60
215
216
217/*
218** {==================================================================
219** Stand-alone configuration
220** ===================================================================
221*/
222
223#if defined(lua_c) || defined(luaall_c)
224
225/*
226@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
227@* is, whether we're running lua interactively).
228** CHANGE it if you have a better definition for non-POSIX/non-Windows
229** systems.
230*/
231#if defined(LUA_USE_ISATTY)
232#include <unistd.h>
233#define lua_stdin_is_tty()      isatty(0)
234#elif defined(LUA_WIN)
235#include <io.h>
236#include <stdio.h>
237#define lua_stdin_is_tty()      _isatty(_fileno(stdin))
238#else
239#define lua_stdin_is_tty()      1  /* assume stdin is a tty */
240#endif
241
242
243/*
244@@ LUA_PROMPT is the default prompt used by stand-alone Lua.
245@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
246** CHANGE them if you want different prompts. (You can also change the
247** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
248*/
249#define LUA_PROMPT              "> "
250#define LUA_PROMPT2             ">> "
251
252
253/*
254@@ LUA_PROGNAME is the default name for the stand-alone Lua program.
255** CHANGE it if your stand-alone interpreter has a different name and
256** your system is not able to detect that name automatically.
257*/
258#define LUA_PROGNAME            "lua"
259
260
261/*
262@@ LUA_MAXINPUT is the maximum length for an input line in the
263@* stand-alone interpreter.
264** CHANGE it if you need longer lines.
265*/
266#define LUA_MAXINPUT    512
267
268
269/*
270@@ lua_readline defines how to show a prompt and then read a line from
271@* the standard input.
272@@ lua_saveline defines how to "save" a read line in a "history".
273@@ lua_freeline defines how to free a line read by lua_readline.
274** CHANGE them if you want to improve this functionality (e.g., by using
275** GNU readline and history facilities).
276*/
277#if defined(LUA_USE_READLINE)
278#include <stdio.h>
279#include <readline/readline.h>
280#include <readline/history.h>
281#define lua_readline(L,b,p)     ((void)L, ((b)=readline(p)) != NULL)
282#define lua_saveline(L,idx) \
283        if (lua_strlen(L,idx) > 0)  /* non-empty line? */ \
284          add_history(lua_tostring(L, idx));  /* add it to history */
285#define lua_freeline(L,b)       ((void)L, free(b))
286#else
287#define lua_readline(L,b,p)     \
288        ((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
289        fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
290#define lua_saveline(L,idx)     { (void)L; (void)idx; }
291#define lua_freeline(L,b)       { (void)L; (void)b; }
292#endif
293
294#endif
295
296/* }================================================================== */
297
298
299/*
300@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
301@* as a percentage.
302** CHANGE it if you want the GC to run faster or slower (higher values
303** mean larger pauses which mean slower collection.) You can also change
304** this value dynamically.
305*/
306#define LUAI_GCPAUSE    200  /* 200% (wait memory to double before next GC) */
307
308
309/*
310@@ LUAI_GCMUL defines the default speed of garbage collection relative to
311@* memory allocation as a percentage.
312** CHANGE it if you want to change the granularity of the garbage
313** collection. (Higher values mean coarser collections. 0 represents
314** infinity, where each step performs a full collection.) You can also
315** change this value dynamically.
316*/
317#define LUAI_GCMUL      200 /* GC runs 'twice the speed' of memory allocation */
318
319
320
321/*
322@@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
323** CHANGE it (define it) if you want exact compatibility with the
324** behavior of setn/getn in Lua 5.0.
325*/
326#undef LUA_COMPAT_GETN
327
328/*
329@@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
330** CHANGE it to undefined as soon as you do not need a global 'loadlib'
331** function (the function is still available as 'package.loadlib').
332*/
333#undef LUA_COMPAT_LOADLIB
334
335/*
336@@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
337** CHANGE it to undefined as soon as your programs use only '...' to
338** access vararg parameters (instead of the old 'arg' table).
339*/
340#undef LUA_COMPAT_VARARG
341
342/*
343@@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
344** CHANGE it to undefined as soon as your programs use 'math.fmod' or
345** the new '%' operator instead of 'math.mod'.
346*/
347#undef LUA_COMPAT_MOD
348
349/*
350@@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
351@* facility.
352** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
353** off the advisory error when nesting [[...]].
354*/
355#undef LUA_COMPAT_LSTR
356
357/*
358@@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
359** CHANGE it to undefined as soon as you rename 'string.gfind' to
360** 'string.gmatch'.
361*/
362#undef LUA_COMPAT_GFIND
363
364/*
365@@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
366@* behavior.
367** CHANGE it to undefined as soon as you replace to 'luaL_register'
368** your uses of 'luaL_openlib'
369*/
370#undef LUA_COMPAT_OPENLIB
371
372
373
374/*
375@@ luai_apicheck is the assert macro used by the Lua-C API.
376** CHANGE luai_apicheck if you want Lua to perform some checks in the
377** parameters it gets from API calls. This may slow down the interpreter
378** a bit, but may be quite useful when debugging C code that interfaces
379** with Lua. A useful redefinition is to use assert.h.
380*/
381#if defined(LUA_USE_APICHECK)
382#include <assert.h>
383#define luai_apicheck(L,o)      { (void)L; assert(o); }
384#else
385#define luai_apicheck(L,o)      { (void)L; }
386#endif
387
388
389/*
390@@ LUAI_BITSINT defines the number of bits in an int.
391** CHANGE here if Lua cannot automatically detect the number of bits of
392** your machine. Probably you do not need to change this.
393*/
394/* avoid overflows in comparison */
395#if INT_MAX-20 < 32760
396#define LUAI_BITSINT    16
397#elif INT_MAX > 2147483640L
398/* int has at least 32 bits */
399#define LUAI_BITSINT    32
400#else
401#error "you must define LUA_BITSINT with number of bits in an integer"
402#endif
403
404
405/*
406@@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
407@@ LUAI_INT32 is an signed integer with at least 32 bits.
408@@ LUAI_UMEM is an unsigned integer big enough to count the total
409@* memory used by Lua.
410@@ LUAI_MEM is a signed integer big enough to count the total memory
411@* used by Lua.
412** CHANGE here if for some weird reason the default definitions are not
413** good enough for your machine. (The definitions in the 'else'
414** part always works, but may waste space on machines with 64-bit
415** longs.) Probably you do not need to change this.
416*/
417#if LUAI_BITSINT >= 32
418#define LUAI_UINT32     unsigned int
419#define LUAI_INT32      int
420#define LUAI_MAXINT32   INT_MAX
421#define LUAI_UMEM       size_t
422#define LUAI_MEM        ptrdiff_t
423#else
424/* 16-bit ints */
425#define LUAI_UINT32     unsigned long
426#define LUAI_INT32      long
427#define LUAI_MAXINT32   LONG_MAX
428#define LUAI_UMEM       unsigned long
429#define LUAI_MEM        long
430#endif
431
432
433/*
434@@ LUAI_MAXCALLS limits the number of nested calls.
435** CHANGE it if you need really deep recursive calls. This limit is
436** arbitrary; its only purpose is to stop infinite recursion before
437** exhausting memory.
438*/
439#define LUAI_MAXCALLS   20000
440
441
442/*
443@@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
444@* can use.
445** CHANGE it if you need lots of (Lua) stack space for your C
446** functions. This limit is arbitrary; its only purpose is to stop C
447** functions to consume unlimited stack space.
448*/
449#define LUAI_MCS_AUX    ((int)(INT_MAX / (4*sizeof(LUA_NUMBER))))
450#define LUAI_MAXCSTACK  (LUAI_MCS_AUX > SHRT_MAX ? SHRT_MAX : LUAI_MCS_AUX)
451
452
453
454/*
455** {==================================================================
456** CHANGE (to smaller values) the following definitions if your system
457** has a small C stack. (Or you may want to change them to larger
458** values if your system has a large C stack and these limits are
459** too rigid for you.) Some of these constants control the size of
460** stack-allocated arrays used by the compiler or the interpreter, while
461** others limit the maximum number of recursive calls that the compiler
462** or the interpreter can perform. Values too large may cause a C stack
463** overflow for some forms of deep constructs.
464** ===================================================================
465*/
466
467
468/*
469@@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
470@* syntactical nested non-terminals in a program.
471*/
472#define LUAI_MAXCCALLS          200
473
474
475/*
476@@ LUAI_MAXVARS is the maximum number of local variables per function
477@* (must be smaller than 250).
478*/
479#define LUAI_MAXVARS            200
480
481
482/*
483@@ LUAI_MAXUPVALUES is the maximum number of upvalues per function
484@* (must be smaller than 250).
485*/
486#define LUAI_MAXUPVALUES        60
487
488
489/*
490@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
491*/
492#define LUAL_BUFFERSIZE         512 /*BUFSIZ*/
493
494/* }================================================================== */
495
496
497
498
499/*
500** {==================================================================
501@@ LUA_NUMBER is the type of numbers in Lua.
502** CHANGE the following definitions only if you want to build Lua
503** with a number type different from double. You may also need to
504** change lua_number2int & lua_number2integer.
505** ===================================================================
506*/
507
508//#define LUA_NUMBER_DOUBLE
509#define LUA_NUMBER      int
510
511/*
512@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
513@* over a number.
514*/
515#define LUAI_UACNUMBER  int
516
517
518/*
519@@ LUA_NUMBER_SCAN is the format for reading numbers.
520@@ LUA_NUMBER_FMT is the format for writing numbers.
521@@ lua_number2str converts a number to a string.
522@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
523@@ lua_str2number converts a string to a number.
524*/
525#define LUA_NUMBER_SCAN         "%d"
526#define LUA_NUMBER_FMT          "%d"
527#define lua_number2str(s,n)     sprintf((s), LUA_NUMBER_FMT, (n))
528#define LUAI_MAXNUMBER2STR      15
529#define lua_str2number(s,p)     strtol((s), (p), 10)
530
531
532/*
533@@ The luai_num* macros define the primitive operations over numbers.
534*/
535#if defined(LUA_CORE)
536//#include <math.h>
537#define luai_numadd(a,b)        ((a)+(b))
538#define luai_numsub(a,b)        ((a)-(b))
539#define luai_nummul(a,b)        ((a)*(b))
540#define luai_numdiv(a,b)        ((a)/(b))
541#define luai_nummod(a,b)        ((a)%(b))
542#define luai_numpow(a,b)        (luai_ipow(a,b))
543#define luai_numunm(a)          (-(a))
544#define luai_numeq(a,b)         ((a)==(b))
545#define luai_numlt(a,b)         ((a)<(b))
546#define luai_numle(a,b)         ((a)<=(b))
547#define luai_numisnan(a)        (!luai_numeq((a), (a)))
548#endif
549
550// reyalp - used in lib too
551#if defined(LUA_CORE) || defined(LUA_LIB)
552LUA_NUMBER luai_ipow(LUA_NUMBER, LUA_NUMBER);
553#endif
554
555/*
556@@ lua_number2int is a macro to convert lua_Number to int.
557@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
558** CHANGE them if you know a faster way to convert a lua_Number to
559** int (with any rounding method and without throwing errors) in your
560** system. In Pentium machines, a naive typecast from double to int
561** in C is extremely slow, so any alternative is worth trying.
562*/
563
564/* On a Pentium, resort to a trick */
565#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
566    (defined(__i386) || defined (_M_IX86) || defined(__i386__))
567
568/* On a Microsoft compiler, use assembler */
569#if defined(_MSC_VER)
570
571#define lua_number2int(i,d)   __asm fld d   __asm fistp i
572#define lua_number2integer(i,n)         lua_number2int(i, n)
573
574/* the next trick should work on any Pentium, but sometimes clashes
575   with a DirectX idiosyncrasy */
576#else
577
578union luai_Cast { double l_d; long l_l; };
579#define lua_number2int(i,d) \
580  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
581#define lua_number2integer(i,n)         lua_number2int(i, n)
582
583#endif
584
585
586/* this option always works, but may be slow */
587#else
588#define lua_number2int(i,d)     ((i)=(int)(d))
589#define lua_number2integer(i,d) ((i)=(lua_Integer)(d))
590
591#endif
592
593/* }================================================================== */
594
595
596/*
597@@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
598** CHANGE it if your system requires alignments larger than double. (For
599** instance, if your system supports long doubles and they must be
600** aligned in 16-byte boundaries, then you should add long double in the
601** union.) Probably you do not need to change this.
602*/
603#define LUAI_USER_ALIGNMENT_T   union { double u; void *s; long l; }
604
605
606/*
607@@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
608** CHANGE them if you prefer to use longjmp/setjmp even with C++
609** or if want/don't to use _longjmp/_setjmp instead of regular
610** longjmp/setjmp. By default, Lua handles errors with exceptions when
611** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
612** and with longjmp/setjmp otherwise.
613*/
614#if defined(__cplusplus)
615/* C++ exceptions */
616#define LUAI_THROW(L,c) throw(c)
617#define LUAI_TRY(L,c,a) try { a } catch(...) \
618        { if ((c)->status == 0) (c)->status = -1; }
619#define luai_jmpbuf     int  /* dummy variable */
620
621#elif defined(LUA_USE_ULONGJMP)
622/* in Unix, try _longjmp/_setjmp (more efficient) */
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#else
628/* default handling with long jumps */
629#define LUAI_THROW(L,c) longjmp((c)->b, 1)
630#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
631#define luai_jmpbuf     jmp_buf
632
633#endif
634
635
636/*
637@@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
638@* can do during pattern-matching.
639** CHANGE it if you need more captures. This limit is arbitrary.
640*/
641#define LUA_MAXCAPTURES         32
642
643
644/*
645@@ lua_tmpnam is the function that the OS library uses to create a
646@* temporary name.
647@@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
648** CHANGE them if you have an alternative to tmpnam (which is considered
649** insecure) or if you want the original tmpnam anyway.  By default, Lua
650** uses tmpnam except when POSIX is available, where it uses mkstemp.
651*/
652#if defined(loslib_c) || defined(luaall_c)
653
654#if defined(LUA_USE_MKSTEMP)
655#include <unistd.h>
656#define LUA_TMPNAMBUFSIZE       32
657#define lua_tmpnam(b,e) { \
658        strcpy(b, "/tmp/lua_XXXXXX"); \
659        e = mkstemp(b); \
660        if (e != -1) close(e); \
661        e = (e == -1); }
662
663#else
664#define LUA_TMPNAMBUFSIZE       L_tmpnam
665#define lua_tmpnam(b,e)         { e = (tmpnam(b) == NULL); }
666#endif
667
668#endif
669
670
671/*
672@@ lua_popen spawns a new process connected to the current one through
673@* the file streams.
674** CHANGE it if you have a way to implement it in your system.
675*/
676#if defined(LUA_USE_POPEN)
677
678#define lua_popen(L,c,m)        ((void)L, fflush(NULL), popen(c,m))
679#define lua_pclose(L,file)      ((void)L, (pclose(file) != -1))
680
681#elif defined(LUA_WIN)
682
683#define lua_popen(L,c,m)        ((void)L, _popen(c,m))
684#define lua_pclose(L,file)      ((void)L, (_pclose(file) != -1))
685
686#else
687
688#define lua_popen(L,c,m)        ((void)((void)c, m),  \
689                luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
690#define lua_pclose(L,file)              ((void)((void)L, file), 0)
691
692#endif
693
694/*
695@@ LUA_DL_* define which dynamic-library system Lua should use.
696** CHANGE here if Lua has problems choosing the appropriate
697** dynamic-library system for your platform (either Windows' DLL, Mac's
698** dyld, or Unix's dlopen). If your system is some kind of Unix, there
699** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for
700** it.  To use dlopen you also need to adapt the src/Makefile (probably
701** adding -ldl to the linker options), so Lua does not select it
702** automatically.  (When you change the makefile to add -ldl, you must
703** also add -DLUA_USE_DLOPEN.)
704** If you do not want any kind of dynamic library, undefine all these
705** options.
706** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD.
707*/
708#if defined(LUA_USE_DLOPEN)
709#define LUA_DL_DLOPEN
710#endif
711
712#if defined(LUA_WIN)
713#define LUA_DL_DLL
714#endif
715
716
717/*
718@@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State
719@* (the data goes just *before* the lua_State pointer).
720** CHANGE (define) this if you really need that. This value must be
721** a multiple of the maximum alignment required for your machine.
722*/
723#define LUAI_EXTRASPACE         0
724
725
726/*
727@@ luai_userstate* allow user-specific actions on threads.
728** CHANGE them if you defined LUAI_EXTRASPACE and need to do something
729** extra when a thread is created/deleted/resumed/yielded.
730*/
731#define luai_userstateopen(L)           ((void)L)
732#define luai_userstateclose(L)          ((void)L)
733#define luai_userstatethread(L,L1)      ((void)L)
734#define luai_userstatefree(L)           ((void)L)
735#define luai_userstateresume(L,n)       ((void)L)
736#define luai_userstateyield(L,n)        ((void)L)
737
738
739/*
740@@ LUA_INTFRMLEN is the length modifier for integer conversions
741@* in 'string.format'.
742@@ LUA_INTFRM_T is the integer type correspoding to the previous length
743@* modifier.
744** CHANGE them if your system supports long long or does not support long.
745*/
746
747#if defined(LUA_USELONGLONG)
748
749#define LUA_INTFRMLEN           "ll"
750#define LUA_INTFRM_T            long long
751
752#else
753
754#define LUA_INTFRMLEN           "l"
755#define LUA_INTFRM_T            long
756
757#endif
758
759
760
761/* =================================================================== */
762
763/*
764** Local configuration. You can use this space to add your redefinitions
765** without modifying the main part of the file.
766*/
767
768
769
770#endif
771
772
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