/* ** $Id: luaconf.h,v 1.176 2013/03/16 21:10:18 roberto Exp $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ #ifndef lconfig_h #define lconfig_h #if defined(__APPLE__) #include "TargetConditionals.h" #endif #include #include /* ** ================================================================== ** 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(LUA_ANSI) && defined(__STRICT_ANSI__) #define LUA_ANSI #endif #if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE) #define LUA_WIN /* enable goodies for regular Windows platforms */ #endif #if defined(LUA_WIN) #define LUA_DL_DLL #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ #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 */ #define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ #define LUA_USE_LONGLONG /* assume support for long long */ #endif #if defined(LUA_USE_MACOSX) #define LUA_USE_POSIX #define LUA_USE_DLOPEN /* does not need -ldl */ #define LUA_USE_READLINE /* needs an extra library: -lreadline */ #define LUA_USE_STRTODHEX /* assume 'strtod' handles hex formats */ #define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ #define LUA_USE_LONGLONG /* assume support for long long */ #endif /* @@ LUA_USE_POSIX includes all functionality 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 #define LUA_USE_GMTIME_R #endif /* @@ 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_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua" #define LUA_CPATH_DEFAULT \ LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll" #else /* }{ */ #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/" #define LUA_ROOT "/usr/local/" #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR #define LUA_PATH_DEFAULT \ LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua" #define LUA_CPATH_DEFAULT \ LUA_CDIR"?.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 /* @@ LUA_ENV is the name of the variable that holds the current @@ environment, used to access global names. ** CHANGE it if you do not like this name. */ #define LUA_ENV "_ENV" /* @@ 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 /* }{ */ #define LUA_API extern #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 #define LUAI_DDEC LUAI_FUNC #define LUAI_DDEF /* empty */ #else /* }{ */ #define LUAI_FUNC extern #define LUAI_DDEC extern #define LUAI_DDEF /* empty */ #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 /* @@ luai_writestring/luai_writeline define how 'print' prints its results. ** They are only used in libraries and the stand-alone program. (The #if ** avoids including 'stdio.h' everywhere.) */ #if defined(LUA_LIB) || defined(lua_c) #include #define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) #define luai_writeline() (luai_writestring("\n", 1), fflush(stdout)) #endif /* @@ luai_writestringerror defines how to print error messages. ** (A format string with one argument is enough for Lua...) */ #define luai_writestringerror(s,p) \ (fprintf(stderr, (s), (p)), fflush(stderr)) /* @@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is, ** strings that are internalized. (Cannot be smaller than reserved words ** or tags for metamethods, as these strings must be internalized; ** #("function") = 8, #("__newindex") = 10.) */ #define LUAI_MAXSHORTLEN 40 /* ** {================================================================== ** Compatibility with previous versions ** =================================================================== */ /* @@ LUA_COMPAT_ALL controls all compatibility options. ** You can define it to get all options, or change specific options ** to fit your specific needs. */ #if defined(LUA_COMPAT_ALL) /* { */ /* @@ 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 /* } */ /* }================================================================== */ /* @@ LUAI_BITSINT defines the number of bits in an int. ** CHANGE here if Lua cannot automatically detect the number of bits of ** your machine. Probably you do not need to change this. */ /* avoid overflows in comparison */ #if INT_MAX-20 < 32760 /* { */ #define LUAI_BITSINT 16 #elif INT_MAX > 2147483640L /* }{ */ /* int has at least 32 bits */ #define LUAI_BITSINT 32 #else /* }{ */ #error "you must define LUA_BITSINT with number of bits in an integer" #endif /* } */ /* @@ LUA_INT32 is a signed integer with exactly 32 bits. @@ LUAI_UMEM is an unsigned integer big enough to count the total @* memory used by Lua. @@ LUAI_MEM is a signed integer big enough to count the total memory @* used by Lua. ** CHANGE here if for some weird reason the default definitions are not ** good enough for your machine. Probably you do not need to change ** this. */ #if LUAI_BITSINT >= 32 /* { */ #define LUA_INT32 int #define LUAI_UMEM size_t #define LUAI_MEM ptrdiff_t #else /* }{ */ /* 16-bit ints */ #define LUA_INT32 long #define LUAI_UMEM unsigned long #define LUAI_MEM long #endif /* } */ /* @@ 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 /* reserve some space for error handling */ #define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000) /* @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. ** CHANGE it if it uses too much C-stack space. */ #define LUAL_BUFFERSIZE BUFSIZ /* ** {================================================================== @@ LUA_NUMBER is the type of numbers in Lua. ** CHANGE the following definitions only if you want to build Lua ** with a number type different from double. You may also need to ** change lua_number2int & lua_number2integer. ** =================================================================== */ #define LUA_NUMBER_DOUBLE #define LUA_NUMBER double /* @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' @* over a number. */ #define LUAI_UACNUMBER double /* @@ LUA_NUMBER_SCAN is the format for reading numbers. @@ LUA_NUMBER_FMT is the format for writing numbers. @@ lua_number2str converts a number to a string. @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. */ #define LUA_NUMBER_SCAN "%lf" #define LUA_NUMBER_FMT "%.14g" #define lua_number2str(s,l,n) snprintf((s), (l), LUA_NUMBER_FMT, (n)) #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ /* @@ l_mathop allows the addition of an 'l' or 'f' to all math operations */ #define l_mathop(x) (x) /* @@ lua_str2number converts a decimal numeric string to a number. @@ lua_strx2number converts an hexadecimal numeric string to a number. ** In C99, 'strtod' does both conversions. C89, however, has no function ** to convert floating hexadecimal strings to numbers. For these ** systems, you can leave 'lua_strx2number' undefined and Lua will ** provide its own implementation. */ #define lua_str2number(s,p) strtod((s), (p)) #if defined(LUA_USE_STRTODHEX) #define lua_strx2number(s,p) strtod((s), (p)) #endif /* @@ The luai_num* macros define the primitive operations over numbers. */ /* the following operations need the math library */ #if defined(lobject_c) || defined(lvm_c) #include #define luai_nummod(L,a,b) ((a) - l_mathop(floor)((a)/(b))*(b)) #define luai_numpow(L,a,b) (l_mathop(pow)(a,b)) #endif /* these are quite standard operations */ #if defined(LUA_CORE) #define luai_numadd(L,a,b) ((a)+(b)) #define luai_numsub(L,a,b) ((a)-(b)) #define luai_nummul(L,a,b) ((a)*(b)) #define luai_numdiv(L,a,b) ((a)/(b)) #define luai_numunm(L,a) (-(a)) #define luai_numeq(a,b) ((a)==(b)) #define luai_numlt(L,a,b) ((a)<(b)) #define luai_numle(L,a,b) ((a)<=(b)) #define luai_numisnan(L,a) (!luai_numeq((a), (a))) #endif /* @@ 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_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned. ** It must have at least 32 bits. */ #define LUA_UNSIGNED unsigned LUA_INT32 /* ** Some tricks with doubles */ #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ /* ** The next definitions activate some tricks to speed up the ** conversion from doubles to integer types, mainly to LUA_UNSIGNED. ** @@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a ** DirectX idiosyncrasy. ** @@ LUA_IEEE754TRICK uses a trick that should work on any machine ** using IEEE754 with a 32-bit integer type. ** @@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be ** defined when LUA_INTEGER is a 32-bit integer. ** @@ LUA_IEEEENDIAN is the endianness of doubles in your machine ** (0 for little endian, 1 for big endian); if not defined, Lua will ** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK). ** @@ LUA_NANTRICK controls the use of a trick to pack all types into ** a single double value, using NaN values to represent non-number ** values. The trick only works on 32-bit machines (ints and pointers ** are 32-bit values) with numbers represented as IEEE 754-2008 doubles ** with conventional endianess (12345678 or 87654321), in CPUs that do ** not produce signaling NaN values (all NaNs are quiet). */ /* Microsoft compiler on a Pentium (32 bit) ? */ #if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */ #define LUA_MSASMTRICK #define LUA_IEEEENDIAN 0 #define LUA_NANTRICK /* pentium 32 bits? */ #elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */ #define LUA_IEEE754TRICK #define LUA_IEEELL #define LUA_IEEEENDIAN 0 #define LUA_NANTRICK /* pentium 64 bits? */ #elif defined(__x86_64) /* }{ */ #define LUA_IEEE754TRICK #define LUA_IEEEENDIAN 0 #elif defined(__POWERPC__) || defined(__ppc__) /* }{ */ #define LUA_IEEE754TRICK #define LUA_IEEEENDIAN 1 #else /* }{ */ /* assume IEEE754 and a 32-bit integer type */ #define LUA_IEEE754TRICK #endif /* } */ #endif /* } */ /* }================================================================== */ /* =================================================================== */ /* ** Local configuration. You can use this space to add your redefinitions ** without modifying the main part of the file. */ #endif