text: /*
  ** mrbconf.h - mruby core configuration
  **
  ** See Copyright Notice in mruby.h
  */
  
  #ifndef MRUBYCONF_H
  #define MRUBYCONF_H
  
  #include <limits.h>
  #include <stdint.h>
  
  /* architecture selection: */
  /* specify -DMRB_32BIT or -DMRB_64BIT to override */
  #if !defined(MRB_32BIT) && !defined(MRB_64BIT)
  #if UINT64_MAX == SIZE_MAX
  #define MRB_64BIT
  #else
  #define MRB_32BIT
  #endif
  #endif
  
  #if defined(MRB_32BIT) && defined(MRB_64BIT)
  #error Cannot build for 32 and 64 bit architecture at the same time
  #endif
  
  /* configuration options: */
  /* add -DMRB_USE_FLOAT32 to use float instead of double for floating point numbers */
  //#define MRB_USE_FLOAT32
  
  /* exclude floating point numbers */
  //#define MRB_NO_FLOAT
  
  /* obsolete configuration */
  #if defined(MRB_USE_FLOAT)
  # define MRB_USE_FLOAT32
  #endif
  
  /* obsolete configuration */
  #if defined(MRB_WITHOUT_FLOAT)
  # define MRB_NO_FLOAT
  #endif
  
  #if defined(MRB_USE_FLOAT32) && defined(MRB_NO_FLOAT)
  #error Cannot define MRB_USE_FLOAT32 and MRB_NO_FLOAT at the same time
  #endif
  
  /* add -DMRB_NO_METHOD_CACHE to disable method cache to save memory */
  //#define MRB_NO_METHOD_CACHE
  /* size of the method cache (need to be the power of 2) */
  //#define MRB_METHOD_CACHE_SIZE (1<<8)
  
  /* add -DMRB_USE_METHOD_T_STRUCT on machines that use higher bits of function pointers */
  /* no MRB_USE_METHOD_T_STRUCT requires highest 2 bits of function pointers to be zero */
  #ifndef MRB_USE_METHOD_T_STRUCT
    // can't use highest 2 bits of function pointers at least on 32bit
    // Windows and 32bit Linux.
  # ifdef MRB_32BIT
  #   define MRB_USE_METHOD_T_STRUCT
  # endif
  #endif
  
  /* define on big endian machines; used by MRB_NAN_BOXING, etc. */
  #ifndef MRB_ENDIAN_BIG
  # if (defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN) || \
       (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
  #  define MRB_ENDIAN_BIG
  # endif
  #endif
  
  /* represent mrb_value in boxed double; conflict with MRB_USE_FLOAT32 and MRB_NO_FLOAT */
  //#define MRB_NAN_BOXING
  
  /* represent mrb_value as a word (natural unit of data for the processor) */
  //#define MRB_WORD_BOXING
  
  /* represent mrb_value as a struct; occupies 2 words */
  //#define MRB_NO_BOXING
  
  /* if no specific boxing type is chosen */
  #if !defined(MRB_NAN_BOXING) && !defined(MRB_WORD_BOXING) && !defined(MRB_NO_BOXING)
  # define MRB_WORD_BOXING
  #endif
  
  /* add -DMRB_INT32 to use 32bit integer for mrb_int; conflict with MRB_INT64;
     Default for 32-bit CPU mode. */
  //#define MRB_INT32
  
  /* add -DMRB_INT64 to use 64bit integer for mrb_int; conflict with MRB_INT32;
     Default for 64-bit CPU mode (unless using MRB_NAN_BOXING). */
  //#define MRB_INT64
  
  /* if no specific integer type is chosen */
  #if !defined(MRB_INT32) && !defined(MRB_INT64)
  # if defined(MRB_64BIT) && !defined(MRB_NAN_BOXING)
  /* Use 64bit integers on 64bit architecture (without MRB_NAN_BOXING) */
  #  define MRB_INT64
  # else
  /* Otherwise use 32bit integers */
  #  define MRB_INT32
  # endif
  #endif
  
  /* call malloc_trim(0) from mrb_full_gc() */
  //#define MRB_USE_MALLOC_TRIM
  
  /* string class to handle UTF-8 encoding */
  //#define MRB_UTF8_STRING
  
  /* argv max size in mrb_funcall */
  //#define MRB_FUNCALL_ARGC_MAX 16
  
  /* number of object per heap page */
  //#define MRB_HEAP_PAGE_SIZE 1024
  
  /* if __ehdr_start is available, mruby can reduce memory used by symbols */
  //#define MRB_USE_LINK_TIME_RO_DATA_P
  
  /* if MRB_USE_LINK_TIME_RO_DATA_P does not work,
     you can try mrb_ro_data_p() that you have implemented yourself in any file;
     prototype is `mrb_bool mrb_ro_data_p(const char *ptr)` */
  //#define MRB_USE_CUSTOM_RO_DATA_P
  
  /* turn off generational GC by default */
  //#define MRB_GC_TURN_OFF_GENERATIONAL
  
  /* default size of khash table bucket */
  //#define KHASH_DEFAULT_SIZE 32
  
  /* allocated memory address alignment */
  //#define POOL_ALIGNMENT 4
  
  /* page size of memory pool */
  //#define POOL_PAGE_SIZE 16000
  
  /* arena size */
  //#define MRB_GC_ARENA_SIZE 100
  
  /* fixed size GC arena */
  //#define MRB_GC_FIXED_ARENA
  
  /* state atexit stack size */
  //#define MRB_FIXED_STATE_ATEXIT_STACK_SIZE 5
  
  /* fixed size state atexit stack */
  //#define MRB_FIXED_STATE_ATEXIT_STACK
  
  /* -DMRB_NO_XXXX to drop following features */
  //#define MRB_NO_STDIO /* use of stdio */
  
  /* -DMRB_USE_XXXX to enable following features */
  //#define MRB_USE_DEBUG_HOOK /* hooks for debugger */
  //#define MRB_USE_ALL_SYMBOLS /* Symbols.all_symbols */
  
  /* obsolete configurations */
  #if defined(DISABLE_STDIO) || defined(MRB_DISABLE_STDIO)
  # define MRB_NO_STDIO
  #endif
  #ifdef MRB_DISABLE_DIRECT_THREADING
  # define MRB_NO_DIRECT_THREADING
  #endif
  #if defined(ENABLE_DEBUG) || defined(MRB_ENABLE_DEBUG_HOOK)
  # define MRB_USE_DEBUG_HOOK
  #endif
  #ifdef MRB_ENABLE_ALL_SYMBOLS
  # define MRB_USE_ALL_SYMBOLS
  #endif
  #ifdef MRB_ENABLE_CXX_ABI
  # define MRB_USE_CXX_ABI
  #endif
  #ifdef MRB_ENABLE_CXX_EXCEPTION
  # define MRB_USE_CXX_EXCEPTION
  #endif
  
  /* end of configuration */
  
  #ifndef MRB_NO_STDIO
  # include <stdio.h>
  #endif
  
  #ifndef FALSE
  # define FALSE 0
  #endif
  
  #ifndef TRUE
  # define TRUE 1
  #endif
  
  /*
  ** mruby tuning profiles
  **/
  
  /* A profile for micro controllers */
  #if defined(MRB_CONSTRAINED_BASELINE_PROFILE)
  # ifndef MRB_NO_METHOD_CACHE
  #  define MRB_NO_METHOD_CACHE
  # endif
  
  # ifndef KHASH_DEFAULT_SIZE
  #  define KHASH_DEFAULT_SIZE 16
  # endif
  
  # ifndef MRB_HEAP_PAGE_SIZE
  #  define MRB_HEAP_PAGE_SIZE 256
  # endif
  
  /* A profile for default mruby */
  #elif defined(MRB_BASELINE_PROFILE)
  
  /* A profile for desktop computers or workstations; rich memory! */
  #elif defined(MRB_MAIN_PROFILE)
  # ifndef MRB_METHOD_CACHE_SIZE
  #  define MRB_METHOD_CACHE_SIZE (1<<10)
  # endif
  
  # ifndef MRB_IV_SEGMENT_SIZE
  #  define MRB_IV_SEGMENT_SIZE 32
  # endif
  
  # ifndef MRB_HEAP_PAGE_SIZE
  #  define MRB_HEAP_PAGE_SIZE 4096
  # endif
  
  /* A profile for server; mruby vm is long life */
  #elif defined(MRB_HIGH_PROFILE)
  # ifndef MRB_METHOD_CACHE_SIZE
  #  define MRB_METHOD_CACHE_SIZE (1<<12)
  # endif
  
  # ifndef MRB_IV_SEGMENT_SIZE
  #  define MRB_IV_SEGMENT_SIZE 64
  # endif
  
  # ifndef MRB_HEAP_PAGE_SIZE
  #  define MRB_HEAP_PAGE_SIZE 4096
  # endif
  #endif
  
  #endif  /* MRUBYCONF_H */
  