/* ** $Id: luaconf.h,v 1.130 2010/01/11 17:15:30 roberto Exp roberto $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ #ifndef lconfig_h #define lconfig_h #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) #define LUA_WIN #endif #if defined(LUA_WIN) #define LUA_DL_DLL #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 #define LUA_USE_READLINE /* needs some extra libraries */ #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 #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_ROOT "/usr/local/" #define LUA_LDIR LUA_ROOT "share/lua/5.2/" #define LUA_CDIR LUA_ROOT "lib/lua/5.2/" #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_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(luaall_c) #define LUAI_FUNC static #define LUAI_DDEC static #define LUAI_DDEF static #elif 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 defines how 'print' prints its results. ** CHANGE it if your system does not have a useful stdout. */ #define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) /* ** {================================================================== ** 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_CPCALL controls the presence of function 'lua_cpcall'. ** You can replace it with the preregistered function 'cpcall'. */ #define LUA_COMPAT_CPCALL LUA_API int (lua_cpcall) (lua_State *L, lua_CFunction func, void *ud); /* @@ LUA_COMPAT_FENV controls the presence of functions 'setfenv/getfenv'. ** You can replace them with lexical environments, 'loadin', or the ** debug library. */ #define LUA_COMPAT_FENV /* @@ 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_MAXN defines the function 'maxn' in the table library. */ #define LUA_COMPAT_MAXN /* @@ LUA_COMPAT_DEBUGLIB controls compatibility with preloading ** the debug library. ** You should add 'require"debug"' everywhere you need the debug ** library. */ #define LUA_COMPAT_DEBUGLIB /* @@ 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) /* compatibility with previous wrong spelling */ #define luaL_typerror luaL_typeerror #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 an 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 to consume 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) /* ** {================================================================== ** CHANGE (to smaller values) the following definitions if your system ** has a small C stack. (Or you may want to change them to larger ** values if your system has a large C stack and these limits are ** too rigid for you.) Some of these constants control the size of ** stack-allocated arrays used by the compiler or the interpreter, while ** others limit the maximum number of recursive calls that the compiler ** or the interpreter can perform. Values too large may cause a C stack ** overflow for some forms of deep constructs. ** =================================================================== */ /* @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. */ #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. @@ lua_str2number converts a string to a number. */ #define LUA_NUMBER_SCAN "%lf" #define LUA_NUMBER_FMT "%.14g" #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ #define lua_str2number(s,p) strtod((s), (p)) /* @@ The luai_num* macros define the primitive operations over numbers. */ /* the following operations need the math library */ #if defined(lobject_c) || defined(lvm_c) || defined(luaall_c) #include #define luai_nummod(L,a,b) ((a) - floor((a)/(b))*(b)) #define luai_numpow(L,a,b) (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_number2int is a macro to convert lua_Number to int. @@ lua_number2integer is a macro to convert lua_Number to LUA_INTEGER. @@ lua_number2uint is a macro to convert a lua_Number to an unsigned @* LUA_INT32. @@ lua_uint2number is a macro to convert an unsigned LUA_INT32 @* to a lua_Number. ** CHANGE them if you know a faster way to convert a lua_Number to ** int (with any rounding method and without throwing errors) in your ** system. In Pentium machines, a naive typecast from double to int ** in C is extremely slow, so any alternative is worth trying. */ /* On a Pentium, resort to a trick */ #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \ (defined(__i386) || defined (_M_IX86) || defined(__i386__)) /* On a Microsoft compiler, use assembler */ #if defined(_MSC_VER) #define lua_number2int(i,d) {__asm fld d __asm fistp i} #define lua_number2integer(i,n) lua_number2int(i, n) #define lua_number2uint(i,n) lua_number2int(i, n) #else /* the next trick should work on any Pentium, but sometimes clashes with a DirectX idiosyncrasy */ union luai_Cast { double l_d; long l_l; }; #define lua_number2int(i,d) \ { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; } #define lua_number2integer(i,n) lua_number2int(i, n) #define lua_number2uint(i,n) lua_number2int(i, n) #endif #else /* this option always works, but may be slow */ #define lua_number2int(i,d) ((i)=(int)(d)) #define lua_number2integer(i,d) ((i)=(LUA_INTEGER)(d)) #define lua_number2uint(i,d) ((i)=(unsigned LUA_INT32)(d)) #endif /* on several machines, coercion from unsigned to double is too slow, so avoid that if possible */ #define lua_uint2number(u) \ ((LUA_INT32)(u) < 0 ? (lua_Number)(u) : (lua_Number)(LUA_INT32)(u)) /* @@ luai_hashnum is a macro do hash a lua_Number value into an integer. @* The hash must be deterministic and give reasonable values for @* both small and large values (outside the range of integers). @* It is used only in ltable.c. */ #if defined(ltable_c) || defined(luaall_c) #include #include #define luai_hashnum(i,d) { int e; \ d = frexp(d, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP); \ lua_number2int(i, d); i += e; } #endif /* }================================================================== */ /* =================================================================== */ /* ** Local configuration. You can use this space to add your redefinitions ** without modifying the main part of the file. */ #endif