/*** $Id: luaconf.h,v 1.82 2006/04/10 18:27:23 roberto Exp $** Configuration file for Lua** See Copyright Notice in lua.h*/#ifndef lconfig_h#define lconfig_h#include <limits.h>#include <stddef.h>/*** ==================================================================** Search for "@@" to find all configurable definitions.** ===================================================================*//*@@ LUA_ANSI controls the use of non-ansi features.** CHANGE it (define it) if you want Lua to avoid the use of any** non-ansi feature or library.*/#if defined(__STRICT_ANSI__)#define LUA_ANSI#endif#if !defined(LUA_ANSI) && defined(_WIN32)#define LUA_WIN#endif#if defined(LUA_USE_LINUX)#define LUA_USE_POSIX#define LUA_USE_DLOPEN		/* needs an extra library: -ldl */#define LUA_USE_READLINE	/* needs some extra libraries */#endif#if defined(LUA_USE_MACOSX)#define LUA_USE_POSIX#define LUA_DL_DYLD		/* does not need extra library */#endif/*@@ LUA_USE_POSIX includes all functionallity listed as X/Open System@* Interfaces Extension (XSI).** CHANGE it (define it) if your system is XSI compatible.*/#if defined(LUA_USE_POSIX)#define LUA_USE_MKSTEMP#define LUA_USE_ISATTY#define LUA_USE_POPEN#define LUA_USE_ULONGJMP#endif/*@@ LUA_PATH and LUA_CPATH are the names of the environment variables that@* Lua check to set its paths.@@ LUA_INIT is the name of the environment variable that Lua@* checks for initialization code.** CHANGE them if you want different names.*/#define LUA_PATH        "LUA_PATH"#define LUA_CPATH       "LUA_CPATH"#define LUA_INIT	"LUA_INIT"/*@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for@* Lua libraries.@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for@* C libraries.** CHANGE them if your machine has a non-conventional directory** hierarchy or if you want to install your libraries in** non-conventional directories.*/#if defined(_WIN32)/*** In Windows, any exclamation mark ('!') in the path is replaced by the** path of the directory of the executable file of the current process.*/#define LUA_LDIR	"!\\lua\\"#define LUA_CDIR	"!\\"#define LUA_PATH_DEFAULT  \		".\\?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \		             LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua"#define LUA_CPATH_DEFAULT \	".\\?.dll;"  LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"#else#define LUA_ROOT	"/usr/local/"#define LUA_LDIR	LUA_ROOT "share/lua/5.1/"#define LUA_CDIR	LUA_ROOT "lib/lua/5.1/"#define LUA_PATH_DEFAULT  \		"./?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \		            LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"#define LUA_CPATH_DEFAULT \	"./?.so;"  LUA_CDIR"?.so;" LUA_CDIR"loadall.so"#endif/*@@ LUA_DIRSEP is the directory separator (for submodules).** CHANGE it if your machine does not use "/" as the directory separator** and is not Windows. (On Windows Lua automatically uses "\".)*/#if defined(_WIN32)#define LUA_DIRSEP	"\\"#else#define LUA_DIRSEP	"/"#endif/*@@ LUA_PATHSEP is the character that separates templates in a path.@@ LUA_PATH_MARK is the string that marks the substitution points in a@* template.@@ LUA_EXECDIR in a Windows path is replaced by the executable's@* directory.@@ LUA_IGMARK is a mark to ignore all before it when bulding the@* luaopen_ function name.** CHANGE them if for some reason your system cannot use those** characters. (E.g., if one of those characters is a common character** in file/directory names.) Probably you do not need to change them.*/#define LUA_PATHSEP	";"#define LUA_PATH_MARK	"?"#define LUA_EXECDIR	"!"#define LUA_IGMARK	"-"/*@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.** CHANGE that if ptrdiff_t is not adequate on your machine. (On most** machines, ptrdiff_t gives a good choice between int or long.)*/#define LUA_INTEGER	ptrdiff_t/*@@ LUA_API is a mark for all core API functions.@@ LUALIB_API is a mark for all standard library functions.** CHANGE them if you need to define those functions in some special way.** For instance, if you want to create one Windows DLL with the core and** the libraries, you may want to use the following definition (define** LUA_BUILD_AS_DLL to get it).*/#if defined(LUA_BUILD_AS_DLL)#if defined(LUA_CORE) || defined(LUA_LIB)#define LUA_API __declspec(dllexport)#else#define LUA_API __declspec(dllimport)#endif#else#define LUA_API		extern#endif/* more often than not the libs go together with the core */#define LUALIB_API	LUA_API/*@@ LUAI_FUNC is a mark for all extern functions that are not to be@* exported to outside modules.@@ LUAI_DATA is a mark for all extern (const) variables that are not to@* be exported to outside modules.** CHANGE them if you need to mark them in some special way. Elf/gcc** (versions 3.2 and later) mark them as "hidden" to optimize access** when Lua is compiled as a shared library.*/#if defined(luaall_c)#define LUAI_FUNC	static#define LUAI_DATA	/* empty */#elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \      defined(__ELF__)#define LUAI_FUNC	__attribute__((visibility("hidden"))) extern#define LUAI_DATA	LUAI_FUNC#else#define LUAI_FUNC	extern#define LUAI_DATA	extern#endif/*@@ LUA_QL describes how error messages quote program elements.** CHANGE it if you want a different appearance.*/#define LUA_QL(x)	"'" x "'"#define LUA_QS		LUA_QL("%s")/*@@ LUA_IDSIZE gives the maximum size for the description of the source@* of a function in debug information.** CHANGE it if you want a different size.*/#define LUA_IDSIZE	60/*** {==================================================================** Stand-alone configuration** ===================================================================*/#if defined(lua_c) || defined(luaall_c)/*@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that@* is, whether we're running lua interactively).** CHANGE it if you have a better definition for non-POSIX/non-Windows** systems.*/#if defined(LUA_USE_ISATTY)#include <unistd.h>#define lua_stdin_is_tty()	isatty(0)#elif defined(LUA_WIN)#include <io.h>#include <stdio.h>#define lua_stdin_is_tty()	_isatty(_fileno(stdin))#else#define lua_stdin_is_tty()	1  /* assume stdin is a tty */#endif/*@@ LUA_PROMPT is the default prompt used by stand-alone Lua.@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.** CHANGE them if you want different prompts. (You can also change the** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)*/#define LUA_PROMPT		"> "#define LUA_PROMPT2		">> "/*@@ LUA_PROGNAME is the default name for the stand-alone Lua program.** CHANGE it if your stand-alone interpreter has a different name and** your system is not able to detect that name automatically.*/#define LUA_PROGNAME		"lua"/*@@ LUA_MAXINPUT is the maximum length for an input line in the@* stand-alone interpreter.** CHANGE it if you need longer lines.*/#define LUA_MAXINPUT	512/*@@ lua_readline defines how to show a prompt and then read a line from@* the standard input.@@ lua_saveline defines how to "save" a read line in a "history".@@ lua_freeline defines how to free a line read by lua_readline.** CHANGE them if you want to improve this functionality (e.g., by using** GNU readline and history facilities).*/#if defined(LUA_USE_READLINE)#include <stdio.h>#include <readline/readline.h>#include <readline/history.h>#define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)#define lua_saveline(L,idx) \	if (lua_strlen(L,idx) > 0)  /* non-empty line? */ \	  add_history(lua_tostring(L, idx));  /* add it to history */#define lua_freeline(L,b)	((void)L, free(b))#else#define lua_readline(L,b,p)	\	((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \	fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */#define lua_saveline(L,idx)	{ (void)L; (void)idx; }#define lua_freeline(L,b)	{ (void)L; (void)b; }#endif#endif/* }================================================================== *//*@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles@* as a percentage.** CHANGE it if you want the GC to run faster or slower (higher values** mean larger pauses which mean slower collection.) You can also change** this value dynamically.*/#define LUAI_GCPAUSE	200  /* 200% (wait memory to double before next GC) *//*@@ LUAI_GCMUL defines the default speed of garbage collection relative to@* memory allocation as a percentage.** CHANGE it if you want to change the granularity of the garbage** collection. (Higher values mean coarser collections. 0 represents** infinity, where each step performs a full collection.) You can also** change this value dynamically.*/#define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation *//*@@ LUA_COMPAT_GETN controls compatibility with old getn behavior.** CHANGE it (define it) if you want exact compatibility with the** behavior of setn/getn in Lua 5.0.*/#undef LUA_COMPAT_GETN/*@@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.** CHANGE it to undefined as soon as you do not need a global 'loadlib'** function (the function is still available as 'package.loadlib').*/#undef LUA_COMPAT_LOADLIB/*@@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.** CHANGE it to undefined as soon as your programs use only '...' to** access vararg parameters (instead of the old 'arg' table).*/#define LUA_COMPAT_VARARG/*@@ LUA_COMPAT_MOD controls compatibility with old math.mod function.** CHANGE it to undefined as soon as your programs use 'math.fmod' or** the new '%' operator instead of 'math.mod'.*/#define LUA_COMPAT_MOD/*@@ LUA_COMPAT_LSTR controls compatibility with old long string nesting@* facility.** CHANGE it to 2 if you want the old behaviour, or undefine it to turn** off the advisory error when nesting [[...]].*/#define LUA_COMPAT_LSTR		1/*@@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.** CHANGE it to undefined as soon as you rename 'string.gfind' to** 'string.gmatch'.*/#define LUA_COMPAT_GFIND/*@@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'@* behavior.** CHANGE it to undefined as soon as you replace to 'luaL_registry'** your uses of 'luaL_openlib'*/#define LUA_COMPAT_OPENLIB/*@@ luai_apicheck is the assert macro used by the Lua-C API.** CHANGE luai_apicheck if you want Lua to perform some checks in the** parameters it gets from API calls. This may slow down the interpreter** a bit, but may be quite useful when debugging C code that interfaces** with Lua. A useful redefinition is to use assert.h.*/#if defined(LUA_USE_APICHECK)#include <assert.h>#define luai_apicheck(L,o)	{ (void)L; assert(o); }#else#define luai_apicheck(L,o)	{ (void)L; }#endif