112657Skvn/*	$NetBSD: luaconf.h,v 1.1.1.1 2010/10/31 11:16:54 mbalmer Exp $ */
212657Skvn
312657Skvn/*
412657Skvn** Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $
512657Skvn** Configuration file for Lua
612657Skvn** See Copyright Notice in lua.h
712657Skvn*/
812657Skvn
912657Skvn
1012657Skvn#ifndef lconfig_h
1112657Skvn#define lconfig_h
1212657Skvn
1312657Skvn#include <limits.h>
1412657Skvn#include <stddef.h>
1512657Skvn
1612657Skvn
1712657Skvn/*
1812657Skvn** ==================================================================
1912657Skvn** Search for "@@" to find all configurable definitions.
2012657Skvn** ===================================================================
2112657Skvn*/
2212657Skvn
2312657Skvn
2412657Skvn/*
2513017Siveresov@@ LUA_ANSI controls the use of non-ansi features.
2613017Siveresov** CHANGE it (define it) if you want Lua to avoid the use of any
2712657Skvn** non-ansi feature or library.
2812657Skvn*/
2912657Skvn#if defined(__STRICT_ANSI__)
3012657Skvn#define LUA_ANSI
3112657Skvn#endif
3212657Skvn
3312657Skvn
3412657Skvn#if !defined(LUA_ANSI) && defined(_WIN32)
3512657Skvn#define LUA_WIN
3612657Skvn#endif
3712657Skvn
3812657Skvn#if defined(LUA_USE_LINUX)
3913017Siveresov#define LUA_USE_POSIX
4012657Skvn#define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
4112657Skvn#define LUA_USE_READLINE	/* needs some extra libraries */
4212657Skvn#endif
4312657Skvn
4412657Skvn#if defined(LUA_USE_MACOSX)
4512657Skvn#define LUA_USE_POSIX
4612657Skvn#define LUA_DL_DYLD		/* does not need extra library */
4712657Skvn#endif
4812657Skvn
4912657Skvn
5012657Skvn
5112657Skvn/*
5212657Skvn@@ LUA_USE_POSIX includes all functionallity listed as X/Open System
5312657Skvn@* Interfaces Extension (XSI).
5412657Skvn** CHANGE it (define it) if your system is XSI compatible.
5512657Skvn*/
5612657Skvn#if defined(LUA_USE_POSIX)
5712657Skvn#define LUA_USE_MKSTEMP
5812657Skvn#define LUA_USE_ISATTY
5912657Skvn#define LUA_USE_POPEN
6012657Skvn#define LUA_USE_ULONGJMP
6112657Skvn#endif
6212657Skvn
6312657Skvn
6412657Skvn/*
6512657Skvn@@ LUA_PATH and LUA_CPATH are the names of the environment variables that
6612657Skvn@* 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
579union 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