Re: [PATCH] unicode: refactor the rule for regenerating utf8data.h

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On Sat, Apr 27, 2019 at 3:24 PM Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
>
> scripts/mkutf8data is used only when regenerating utf8data.h,
> which never happens in the normal kernel build. However, it is
> irrespectively built if CONFIG_UNICODE is enabled.
>
> Moreover, there is no good reason for it to reside in the scripts/
> directory since it is only used in fs/unicode/.
>
> Hence, move it from scripts/ to fs/unicode/.
>
> In some cases, we bypass build artifacts in the normal build. The
> conventianl way to do so is to surround the code with ifdef REGENERATE_*.


This is a typo.

conventianl -> conventional



> For example,
>
>  - 7373f4f83c71 ("kbuild: add implicit rules for parser generation")
>  - 6aaf49b495b4 ("crypto: arm,arm64 - Fix random regeneration of S_shipped")
>
> I rewrote the rule in a more kbuild'ish style.
>
> It works like this:
>
> $ make REGENERATE_UTF8DATA=1 fs/unicode/
>   [ snip ]
>   HOSTCC  fs/unicode/mkutf8data
>   GEN     fs/unicode/utf8data.h
>   CC      fs/unicode/utf8-norm.o
>   CC      fs/unicode/utf8-core.o
>   AR      fs/unicode/built-in.a
>
> Also, I added utf8data.h to .gitignore and dontdiff.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> ---




-- 
Best Regards
Masahiro Yamada



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