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It's for internal use. Please use `conf.disable_presym`.
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To describe how to use symbols, especially preallocated symbols from C.
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For easier compiling and linking of the application embedding `mruby`
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- changed `github` to `GitHub`
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Run on pull request only
Using https://www.npmjs.com/package/markdownlint-cli
Lint Markdown for rules:
- MD009/no-trailing-spaces
- MD012/no-multiple-blanks
- MD022/blanks-around-headings
- MD031/blanks-around-fences
- MD032/blanks-around-lists
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Previously, presym files were always created in `build/{presym,presym.inc}`.
However, this constraint is inconvenient because it is common to use
multiple build configurations and build targets in a single mruby tree.
Therefore, change to create presym file for each build target.
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However, compiling by `mrbc` fails with another issue (#5116).
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| Previous Name | New Name |
|------------------------------|-------------------------|
| MRB_ENABLE_ALL_SYMBOLS | MRB_USE_ALL_SYMBOLS |
| MRB_ENABLE_SYMBOLL_ALL | MRB_USE_ALL_SYMBOLS |
| MRB_ENABLE_CXX_ABI | MRB_USE_CXX_ABI |
| MRB_ENABLE_CXX_EXCEPTION | MRB_USE_CXX_EXCEPTION |
| MRB_ENABLE_DEBUG_HOOK | MRB_USE_DEBUG_HOOK |
| MRB_DISABLE_DIRECT_THREADING | MRB_NO_DIRECT_THREADING |
| MRB_DISABLE_STDIO | MRB_NO_STDIO |
| ENABLE_LINENOISE | MRB_USE_LINENOISE |
| ENABLE_READLINE | MRB_USE_READLINE |
| DISABLE_MIRB_UNDERSCORE | MRB_NO_MIRB_UNDERSCORE |
| DISABLE_GEMS | MRB_NO_GEMS |
* `MRB_ENABLE_SYMBOLL_ALL` seems to be a typo, so it is fixed.
* `MRB_` prefix is added to those without.
* The previous names can also be used for compatibility.
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In addition, update the documents referring `build_config.rb` which is
no longer used. The new `build_config.rb` describes the new configuration
structure in the comment.
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* In explanation of mruby, the expression `build_config.rb` is frequently
used including official documents, so I think that it will not make sense
if the file is no longer used.
* The `MRUBY_TARGET` mechanism seems to have little improvement, so I don't
think it should be changed to avoid unnecessary confusion.
* `MRUBY_TARGET` and `MRuby.targets` represent somewhat different things,
so using the same term "target" is a bit confusing.
The mechanism that can be written short when using a file under
`build_config` (renamed from `target`) directory remains
(`build_config/${MRUBY_CONFIG}.rb` is used if the path specified
in `MRUBY_CONFIG` doesn't exist).
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- `MRB_WITHOUT_FLOAT` => `MRB_NO_FLOAT`
- `MRB_USE_FLOAT` => `MRB_USE_FLOAT32`
The former is to use `USE_XXX` naming convention. The latter is to make
sure `float` is 32bit float and not floating point number in general.
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It's the first change of renaming configuration options to `MRB_XXX` to
`MRB_USE_XXX` or `MRB_NO_XXX`.
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Introduced `MRB_NO_METHOD_CACHE` which is inverse of `MRB_METHOD_CACHE`
that should be enabled intestinally. In addition, the default cache is
made bigger (128 -> 256).
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linked programs
In lld linked programs, .rodata comes before .text, thus mrb_ro_data_p
will return false for strings in .rodata. Change the lower bound from
_etext to __ehdr_start to catch these cases. This works for ld.bfd, gold
and lld, and it does not have false positives even if .init_array does
not exist.
Remove the branch that uses _edata: strings in .data can be modified so
this is semantically incorrect. Delete the __APPLE__ branch (its
manpages say get_etext() and get_edata() are strongly discouraged).
.init_array has been adopted by most ELF platforms to supersede .ctors.
Neither _etext nor _edata is used, so rename MRB_USE_ETEXT_EDATA to
MRB_USE_EHDR_START.
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`MRB_METHOD_TABLE_INLINE` was fragile. It requires `-falign-functions=n`.
On platform that uses higher bits of function pointers, you can use new
`MRB_METHOD_T_STRUCT` configuration macro.
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- (Modify) `MRB_INT16`
- (Add) `MRB_INT32`
- (Modify) `MRB_INT64`
- (Add) `MRB_USE_ETEXT_EDATA`
- (Add) `MRB_NO_INIT_ARRAY_START
- (Add) `MRB_WITHOUT_FLOAT`
- (Add) `MRB_METHOD_CACHE`
- (Add) `MRB_METHOD_CACHE_SIZE`
- (Add) `MRB_METHOD_TABLE_INLINE
- (Add) `MRB_ENABLE_ALL_SYMBOLS`
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`mruby 2.0.1 (2019-4-4)`
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