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- /*
- ** $Id: luaconf.h,v 1.172 2012/05/11 14:14:42 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(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 hexa 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 hexa 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 <stdio.h>
- #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 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)
- /*
- @@ 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,n) sprintf((s), LUA_NUMBER_FMT, (n))
- #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
- /*
- @@ lua_str2number converts a decimal numeric string to a number.
- @@ lua_strx2number converts an hexadecimal numeric string to a number.
- ** In C99, 'strtod' do 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 <math.h>
- #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_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_CORE) && \
- 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.
- **
- @@ MS_ASMTRICK 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 MS_ASMTRICK
- #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
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