FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/lua/luaconf.h

     /*
     ** $Id: luaconf.h,v 1.176.1.2 2013/11/21 17:26:16 roberto Exp $
     ** Configuration file for Lua
     ** See Copyright Notice in lua.h
     */
     
     
     #ifndef lconfig_h
     #define lconfig_h
    
    #include <sys/zfs_context.h>
    
    
    extern ssize_t lcompat_sprintf(char *, size_t size, const char *, ...);
    extern int64_t lcompat_strtoll(const char *, char **);
    extern int64_t lcompat_pow(int64_t, int64_t);
    extern int lcompat_hashnum(int64_t);
    
    /*
    ** ==================================================================
    ** 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_writestringerror defines how to print error messages.
   ** (A format string with one argument is enough for Lua...)
   */
   #ifdef _KERNEL
   #define luai_writestringerror(s,p) \
           (zfs_dbgmsg((s), (p)))
   #else
   #define luai_writestringerror(s,p) \
           (fprintf(stderr, (s), (p)), fflush(stderr))
   #endif
   
   
   /*
   @@ 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                          /* } */
   
   /* }================================================================== */
   
   
   #undef INT_MAX
   #define INT_MAX 2147483647L
   
   /*
   @@ 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         512
   
   
   /*
   ** {==================================================================
   @@ 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      int64_t
   
   /*
   @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
   @* over a number.
   */
   #define LUAI_UACNUMBER  int64_t
   
   
   /*
   @@ 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.
   */
   #ifndef PRId64
   #define PRId64  "lld"
   #endif
   
   #define LUAI_MAXNUMBER2STR      32 /* 16 digits, sign, point, and \0 */
   #define LUA_NUMBER_FMT          "%" PRId64
   #define lua_number2str(s,n)     \
           lcompat_sprintf((s), LUAI_MAXNUMBER2STR, LUA_NUMBER_FMT, (n))
   
   
   /*
   @@ l_mathop allows the addition of an 'l' or 'f' to all math operations
   */
   #define l_mathop(x)             (x ## l)
   
   
   /*
   @@ 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)     lcompat_strtoll((s), (p))
   
   #if defined(LUA_USE_STRTODHEX)
   #define lua_strx2number(s,p)    lcompat_strtoll((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)
   #define luai_nummod(L,a,b)      ((a) % (b))
   #define luai_numpow(L,a,b)      (lcompat_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    uint64_t
   
   
   
   /*
   ** 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 endianness (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.
   */
   
   #define getlocaledecpoint() ('.')
   
   #ifndef abs
   #define abs(x) (((x) < 0) ? -(x) : (x))
   #endif
   
   #if !defined(UCHAR_MAX)
   #define UCHAR_MAX (0xff)
   #endif
   
   #endif

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