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/* ** $Id: luaconf.h,v 1.255 2016/05/01 20:06:09 roberto Exp $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ #ifndef luaconf_h #define luaconf_h #include <limits.h> #include <stddef.h> /* ** =================================================================== ** Search for "@@" to find all configurable definitions. ** =================================================================== */ /* ** {==================================================================== ** System Configuration: macros to adapt (if needed) Lua to some ** particular platform, for instance compiling it with 32-bit numbers or ** restricting it to C89. ** ===================================================================== */ /* @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You ** can also define LUA_32BITS in the make file, but changing here you ** ensure that all software connected to Lua will be compiled with the ** same configuration. */ /* #define LUA_32BITS */ /* @@ LUA_USE_C89 controls the use of non-ISO-C89 features. ** Define it if you want Lua to avoid the use of a few C99 features ** or Windows-specific features on Windows. */ /* #define LUA_USE_C89 */ /* ** By default, Lua on Windows use (some) specific Windows features */ #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) #define LUA_USE_WINDOWS /* enable goodies for regular Windows */ #endif #if defined(LUA_USE_WINDOWS) #define LUA_DL_DLL /* enable support for DLL */ #define LUA_USE_C89 /* broadly, Windows is C89 */ #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_USE_DLOPEN /* MacOS does not need -ldl */ #define LUA_USE_READLINE /* needs an extra library: -lreadline */ #endif /* @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for ** C89 ('long' and 'double'); Windows always has '__int64', so it does ** not need to use this case. */ #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) #define LUA_C89_NUMBERS #endif /* @@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. */ /* avoid undefined shifts */ #if ((INT_MAX >> 15) >> 15) >= 1 #define LUAI_BITSINT 32 #else /* 'int' always must have at least 16 bits */ #define LUAI_BITSINT 16 #endif /* @@ LUA_INT_TYPE defines the type for Lua integers. @@ LUA_FLOAT_TYPE defines the type for Lua floats. ** Lua should work fine with any mix of these options (if supported ** by your C compiler). The usual configurations are 64-bit integers ** and 'double' (the default), 32-bit integers and 'float' (for ** restricted platforms), and 'long'/'double' (for C compilers not ** compliant with C99, which may not have support for 'long long'). */ /* predefined options for LUA_INT_TYPE */ #define LUA_INT_INT 1 #define LUA_INT_LONG 2 #define LUA_INT_LONGLONG 3 /* predefined options for LUA_FLOAT_TYPE */ #define LUA_FLOAT_FLOAT 1 #define LUA_FLOAT_DOUBLE 2 #define LUA_FLOAT_LONGDOUBLE 3 #if defined(LUA_32BITS) /* { */ /* ** 32-bit integers and 'float' */ #if LUAI_BITSINT >= 32 /* use 'int' if big enough */ #define LUA_INT_TYPE LUA_INT_INT #else /* otherwise use 'long' */ #define LUA_INT_TYPE LUA_INT_LONG #endif #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT #elif defined(LUA_C89_NUMBERS) /* }{ */ /* ** largest types available for C89 ('long' and 'double') */ #define LUA_INT_TYPE LUA_INT_LONG #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE #endif /* } */ /* ** default configuration for 64-bit Lua ('long long' and 'double') */ #if !defined(LUA_INT_TYPE) #define LUA_INT_TYPE LUA_INT_LONGLONG #endif #if !defined(LUA_FLOAT_TYPE) #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE #endif /* }================================================================== */ /* ** {================================================================== ** Configuration for Paths. ** =================================================================== */ /* @@ 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. */ #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR #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_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" #define LUA_PATH_DEFAULT \ LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ ".\\?.lua;" ".\\?\\init.lua" #define LUA_CPATH_DEFAULT \ LUA_CDIR"?.dll;" \ LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ LUA_CDIR"loadall.dll;" ".\\?.dll" #else /* }{ */ /* This defines DEB_HOST_MULTIARCH */ #include "lua5.3-deb-multiarch.h" #define LUA_ROOT "/usr/local/" #define LUA_ROOT2 "/usr/" #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" #define LUA_LDIR2 LUA_ROOT2 "share/lua/" LUA_VDIR "/" #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" #define LUA_CDIR2 LUA_ROOT2 "lib/" DEB_HOST_MULTIARCH "/lua/" LUA_VDIR "/" #define LUA_CDIR3 LUA_ROOT2 "lib/lua/" LUA_VDIR "/" #define LUA_PATH_DEFAULT \ LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ LUA_LDIR2"?.lua;" LUA_LDIR2"?/init.lua;" \ "./?.lua;" "./?/init.lua" #define LUA_CPATH_DEFAULT \ LUA_CDIR"?.so;" LUA_CDIR2"?.so;" LUA_CDIR3"?.so;" LUA_CDIR"loadall.so;" "./?.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 /* }================================================================== */ /* ** {================================================================== ** Marks for exported symbols in the C code ** =================================================================== */ /* @@ LUA_API is a mark for all core API functions. @@ LUALIB_API is a mark for all auxiliary library functions. @@ LUAMOD_API is a mark for all standard library opening 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 /* }{ */ #ifdef __cplusplus #define LUA_API extern "C" #else #define LUA_API extern #endif #endif /* } */ /* more often than not the libs go together with the core */ #define LUALIB_API LUA_API #define LUAMOD_API LUALIB_API /* @@ LUAI_FUNC is a mark for all extern functions that are not to be ** exported to outside modules. @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables ** that are not to be exported to outside modules (LUAI_DDEF for ** definitions and LUAI_DDEC for declarations). ** 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. Not all elf targets support ** this attribute. Unfortunately, gcc does not offer a way to check ** whether the target offers that support, and those without support ** give a warning about it. To avoid these warnings, change to the ** default definition. */ #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ defined(__ELF__) /* { */ #define LUAI_FUNC __attribute__((visibility("hidden"))) extern #else /* }{ */ #define LUAI_FUNC extern #endif /* } */ #define LUAI_DDEC LUAI_FUNC #define LUAI_DDEF /* empty */ /* }================================================================== */ /* ** {================================================================== ** Compatibility with previous versions ** =================================================================== */ /* @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. ** You can define it to get all options, or change specific options ** to fit your specific needs. */ #if defined(LUA_COMPAT_5_2) /* { */ /* @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated ** functions in the mathematical library. */ #define LUA_COMPAT_MATHLIB /* @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. */ #define LUA_COMPAT_BITLIB /* @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. */ #define LUA_COMPAT_IPAIRS /* @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, ** luaL_checkint, luaL_checklong, etc.) */ #define LUA_COMPAT_APIINTCASTS #endif /* } */ #if defined(LUA_COMPAT_5_1) /* { */ /* Incompatibilities from 5.2 -> 5.3 */ #define LUA_COMPAT_MATHLIB #define LUA_COMPAT_APIINTCASTS /* @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. ** You can replace it with 'table.unpack'. */ #define LUA_COMPAT_UNPACK /* @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. ** You can replace it with 'package.searchers'. */ #define LUA_COMPAT_LOADERS /* @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. ** You can call your C function directly (with light C functions). */ #define lua_cpcall(L,f,u) \ (lua_pushcfunction(L, (f)), \ lua_pushlightuserdata(L,(u)), \ lua_pcall(L,1,0,0)) /* @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. ** You can rewrite 'log10(x)' as 'log(x, 10)'. */ #define LUA_COMPAT_LOG10 /* @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base ** library. You can rewrite 'loadstring(s)' as 'load(s)'. */ #define LUA_COMPAT_LOADSTRING /* @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. */ #define LUA_COMPAT_MAXN /* @@ The following macros supply trivial compatibility for some ** changes in the API. The macros themselves document how to ** change your code to avoid using them. */ #define lua_strlen(L,i) lua_rawlen(L, (i)) #define lua_objlen(L,i) lua_rawlen(L, (i)) #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) /* @@ LUA_COMPAT_MODULE controls compatibility with previous ** module functions 'module' (Lua) and 'luaL_register' (C). */ #define LUA_COMPAT_MODULE #endif /* } */ /* @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a @@ a float mark ('.0'). ** This macro is not on by default even in compatibility mode, ** because this is not really an incompatibility. */ /* #define LUA_COMPAT_FLOATSTRING */ /* }================================================================== */ /* ** {================================================================== ** Configuration for Numbers. ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* ** satisfy your needs. ** =================================================================== */ /* @@ LUA_NUMBER is the floating-point type used by Lua. @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' @@ over a floating number. @@ l_mathlim(x) corrects limit name 'x' to the proper float type ** by prefixing it with one of FLT/DBL/LDBL. @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. @@ LUA_NUMBER_FMT is the format for writing floats. @@ lua_number2str converts a float to a string. @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. @@ l_floor takes the floor of a float. @@ lua_str2number converts a decimal numeric string to a number. */ /* The following definitions are good for most cases here */ #define l_floor(x) (l_mathop(floor)(x)) #define lua_number2str(s,sz,n) l_sprintf((s), sz, LUA_NUMBER_FMT, (n)) /* @@ lua_numbertointeger converts a float number to an integer, or ** returns 0 if float is not within the range of a lua_Integer. ** (The range comparisons are tricky because of rounding. The tests ** here assume a two-complement representation, where MININTEGER always ** has an exact representation as a float; MAXINTEGER may not have one, ** and therefore its conversion to float may have an ill-defined value.) */ #define lua_numbertointeger(n,p) \ ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ (*(p) = (LUA_INTEGER)(n), 1)) /* now the variable definitions */ #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ #define LUA_NUMBER float #define l_mathlim(n) (FLT_##n) #define LUAI_UACNUMBER double #define LUA_NUMBER_FRMLEN "" #define LUA_NUMBER_FMT "%.7g" #define l_mathop(op) op##f #define lua_str2number(s,p) strtof((s), (p)) #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ #define LUA_NUMBER long double #define l_mathlim(n) (LDBL_##n) #define LUAI_UACNUMBER long double #define LUA_NUMBER_FRMLEN "L" #define LUA_NUMBER_FMT "%.19Lg" #define l_mathop(op) op##l #define lua_str2number(s,p) strtold((s), (p)) #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ #define LUA_NUMBER double #define l_mathlim(n) (DBL_##n) #define LUAI_UACNUMBER double #define LUA_NUMBER_FRMLEN "" #define LUA_NUMBER_FMT "%.14g" #define l_mathop(op) op #define lua_str2number(s,p) strtod((s), (p)) #else /* }{ */ #error "numeric float type not defined" #endif /* } */ /* @@ LUA_INTEGER is the integer type used by Lua. ** @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. ** @@ LUAI_UACINT is the result of an 'usual argument conversion' @@ over a lUA_INTEGER. @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. @@ LUA_INTEGER_FMT is the format for writing integers. @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. @@ lua_integer2str converts an integer to a string. */ /* The following definitions are good for most cases here */ #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" #define lua_integer2str(s,sz,n) l_sprintf((s), sz, LUA_INTEGER_FMT, (n)) #define LUAI_UACINT LUA_INTEGER /* ** use LUAI_UACINT here to avoid problems with promotions (which ** can turn a comparison between unsigneds into a signed comparison) */ #define LUA_UNSIGNED unsigned LUAI_UACINT /* now the variable definitions */ #if LUA_INT_TYPE == LUA_INT_INT /* { int */ #define LUA_INTEGER int #define LUA_INTEGER_FRMLEN "" #define LUA_MAXINTEGER INT_MAX #define LUA_MININTEGER INT_MIN #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ #define LUA_INTEGER long #define LUA_INTEGER_FRMLEN "l" #define LUA_MAXINTEGER LONG_MAX #define LUA_MININTEGER LONG_MIN #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ /* use presence of macro LLONG_MAX as proxy for C99 compliance */ #if defined(LLONG_MAX) /* { */ /* use ISO C99 stuff */ #define LUA_INTEGER long long #define LUA_INTEGER_FRMLEN "ll" #define LUA_MAXINTEGER LLONG_MAX #define LUA_MININTEGER LLONG_MIN #elif defined(LUA_USE_WINDOWS) /* }{ */ /* in Windows, can use specific Windows types */ #define LUA_INTEGER __int64 #define LUA_INTEGER_FRMLEN "I64" #define LUA_MAXINTEGER _I64_MAX #define LUA_MININTEGER _I64_MIN #else /* }{ */ #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" #endif /* } */ #else /* }{ */ #error "numeric integer type not defined" #endif /* } */ /* }================================================================== */ /* ** {================================================================== ** Dependencies with C99 and other C details ** =================================================================== */ /* @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. ** (All uses in Lua have only one format item.) */ #if !defined(LUA_USE_C89) #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) #else #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) #endif /* @@ lua_strx2number converts an hexadecimal numeric string to a number. ** In C99, 'strtod' does that conversion. Otherwise, you can ** leave 'lua_strx2number' undefined and Lua will provide its own ** implementation. */ #if !defined(LUA_USE_C89) #define lua_strx2number(s,p) lua_str2number(s,p) #endif /* @@ lua_number2strx converts a float to an hexadecimal numeric string. ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will ** provide its own implementation. */ #if !defined(LUA_USE_C89) #define lua_number2strx(L,b,sz,f,n) ((void)L, l_sprintf(b,sz,f,n)) #endif /* ** 'strtof' and 'opf' variants for math functions are not valid in ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the ** availability of these variants. ('math.h' is already included in ** all files that use these macros.) */ #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) #undef l_mathop /* variants not available */ #undef lua_str2number #define l_mathop(op) (lua_Number)op /* no variant */ #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) #endif /* @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation ** functions. It must be a numerical type; Lua will use 'intptr_t' if ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to ** 'intptr_t' in C89) */ #define LUA_KCONTEXT ptrdiff_t #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ __STDC_VERSION__ >= 199901L #include <stdint.h> #if defined(INTPTR_MAX) /* even in C99 this type is optional */ #undef LUA_KCONTEXT #define LUA_KCONTEXT intptr_t #endif #endif /* @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). ** Change that if you do not want to use C locales. (Code using this ** macro must include header 'locale.h'.) */ #if !defined(lua_getlocaledecpoint) #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) #endif /* }================================================================== */ /* ** {================================================================== ** Language Variations ** ===================================================================== */ /* @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic ** coercion from strings to numbers. */ /* #define LUA_NOCVTN2S */ /* #define LUA_NOCVTS2N */ /* @@ LUA_USE_APICHECK turns on several consistency checks on the C API. ** Define it as a help when debugging C code. */ #if defined(LUA_USE_APICHECK) #include <assert.h> #define luai_apicheck(l,e) assert(e) #endif /* }================================================================== */ /* ** {================================================================== ** Macros that affect the API and must be stable (that is, must be the ** same when you compile Lua and when you compile code that links to ** Lua). You probably do not want/need to change them. ** ===================================================================== */ /* @@ LUAI_MAXSTACK limits the size of the Lua stack. ** CHANGE it if you need a different limit. This limit is arbitrary; ** its only purpose is to stop Lua from consuming unlimited stack ** space (and to reserve some numbers for pseudo-indices). */ #if LUAI_BITSINT >= 32 #define LUAI_MAXSTACK 1000000 #else #define LUAI_MAXSTACK 15000 #endif /* @@ LUA_EXTRASPACE defines the size of a raw memory area associated with ** a Lua state with very fast access. ** CHANGE it if you need a different size. */ #define LUA_EXTRASPACE (sizeof(void *)) /* @@ 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 /* @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. ** CHANGE it if it uses too much C-stack space. (For long double, ** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a ** smaller buffer would force a memory allocation for each call to ** 'string.format'.) */ #if defined(LUA_FLOAT_LONGDOUBLE) #define LUAL_BUFFERSIZE 8192 #else #define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) #endif /* }================================================================== */ /* @@ LUA_QL describes how error messages quote program elements. ** Lua does not use these macros anymore; they are here for ** compatibility only. */ #define LUA_QL(x) "'" x "'" #define LUA_QS LUA_QL("%s") /* =================================================================== */ /* ** Local configuration. You can use this space to add your redefinitions ** without modifying the main part of the file. */ #endif