mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
83f2654bac
It was default on Linux. Abandoned for 2 reasons: * some cross-platform compiler defines `__linux__` even on bare metal environment (RTL8196 (MIPS big endian soc) for example). * some compilers do not align functions pointers so that we need to specify `-falign-functions=n` (where n>1). It's not suitable for default configuration. By our measurement, `mrbtest` consumes 400KB less memory. So if your target machine is memory tight, add the following command-line options to `GCC` (unfortunately `clang` does not support `-falign-functions`). `-falign-functions=2 -DMRB_METHOD_TABLE_INLINE`
144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
/*
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** mrbconf.h - mruby core configuration
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**
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** See Copyright Notice in mruby.h
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*/
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#ifndef MRUBYCONF_H
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#define MRUBYCONF_H
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#include <limits.h>
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#include <stdint.h>
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/* architecture selection: */
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/* specify -DMRB_32BIT or -DMRB_64BIT to override */
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#if !defined(MRB_32BIT) && !defined(MRB_64BIT)
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#if UINT64_MAX == SIZE_MAX
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#define MRB_64BIT
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#else
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#define MRB_32BIT
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#endif
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#endif
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#if defined(MRB_32BIT) && defined(MRB_64BIT)
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#error Cannot build for 32 and 64 bit architecture at the same time
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#endif
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/* configuration options: */
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/* add -DMRB_USE_FLOAT to use float instead of double for floating point numbers */
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//#define MRB_USE_FLOAT
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/* exclude floating point numbers */
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//#define MRB_WITHOUT_FLOAT
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/* add -DMRB_METHOD_CACHE to use method cache to improve performance */
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//#define MRB_METHOD_CACHE
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/* size of the method cache (need to be the power of 2) */
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//#define MRB_METHOD_CACHE_SIZE (1<<7)
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/* add -DMRB_METHOD_TABLE_INLINE to reduce the size of method table */
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/* MRB_METHOD_TABLE_INLINE requires LSB of function pointers to be zero */
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/* you might need to specify --falign-functions=n (where n>1) */
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//#define MRB_METHOD_TABLE_INLINE
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/* add -DMRB_INT16 to use 16bit integer for mrb_int; conflict with MRB_INT64 */
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//#define MRB_INT16
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/* add -DMRB_INT64 to use 64bit integer for mrb_int; conflict with MRB_INT16 */
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//#define MRB_INT64
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/* if no specific integer type is chosen */
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#if !defined(MRB_INT16) && !defined(MRB_INT32) && !defined(MRB_INT64)
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# if defined(MRB_64BIT) && !defined(MRB_NAN_BOXING)
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/* Use 64bit integers on 64bit architecture (without MRB_NAN_BOXING) */
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# define MRB_INT64
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# else
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/* Otherwise use 32bit integers */
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# define MRB_INT32
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# endif
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#endif
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/* represent mrb_value in boxed double; conflict with MRB_USE_FLOAT and MRB_WITHOUT_FLOAT */
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//#define MRB_NAN_BOXING
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/* define on big endian machines; used by MRB_NAN_BOXING */
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//#define MRB_ENDIAN_BIG
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/* represent mrb_value as a word (natural unit of data for the processor) */
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//#define MRB_WORD_BOXING
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/* string class to handle UTF-8 encoding */
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//#define MRB_UTF8_STRING
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/* argv max size in mrb_funcall */
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//#define MRB_FUNCALL_ARGC_MAX 16
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/* number of object per heap page */
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//#define MRB_HEAP_PAGE_SIZE 1024
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/* if _etext and _edata available, mruby can reduce memory used by symbols */
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//#define MRB_USE_ETEXT_EDATA
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/* do not use __init_array_start to determine readonly data section;
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effective only when MRB_USE_ETEXT_EDATA is defined */
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//#define MRB_NO_INIT_ARRAY_START
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/* turn off generational GC by default */
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//#define MRB_GC_TURN_OFF_GENERATIONAL
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/* default size of khash table bucket */
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//#define KHASH_DEFAULT_SIZE 32
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/* allocated memory address alignment */
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//#define POOL_ALIGNMENT 4
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/* page size of memory pool */
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//#define POOL_PAGE_SIZE 16000
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/* initial minimum size for string buffer */
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//#define MRB_STR_BUF_MIN_SIZE 128
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/* arena size */
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//#define MRB_GC_ARENA_SIZE 100
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/* fixed size GC arena */
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//#define MRB_GC_FIXED_ARENA
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/* state atexit stack size */
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//#define MRB_FIXED_STATE_ATEXIT_STACK_SIZE 5
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/* fixed size state atexit stack */
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//#define MRB_FIXED_STATE_ATEXIT_STACK
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/* -DMRB_DISABLE_XXXX to drop following features */
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//#define MRB_DISABLE_STDIO /* use of stdio */
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/* -DMRB_ENABLE_XXXX to enable following features */
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//#define MRB_ENABLE_DEBUG_HOOK /* hooks for debugger */
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/* end of configuration */
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/* define MRB_DISABLE_XXXX from DISABLE_XXX (for compatibility) */
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#ifdef DISABLE_STDIO
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#define MRB_DISABLE_STDIO
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#endif
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/* define MRB_ENABLE_XXXX from ENABLE_XXX (for compatibility) */
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#ifdef ENABLE_DEBUG
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#define MRB_ENABLE_DEBUG_HOOK
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#endif
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#ifndef MRB_DISABLE_STDIO
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# include <stdio.h>
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#endif
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#ifndef FALSE
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# define FALSE 0
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#endif
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#ifndef TRUE
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# define TRUE 1
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#endif
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#endif /* MRUBYCONF_H */
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