GNU bug report logs - #74368
31.0.50; Different warnings between native-compile and native-compile-async

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From: Sean Devlin <spd <at> toadstyle.org>
To: Andrea Corallo <acorallo <at> gnu.org>
Cc: 74368 <at> debbugs.gnu.org
Subject: bug#74368: 31.0.50; Different warnings between native-compile and native-compile-async
Date: Fri, 22 Nov 2024 11:32:39 -0500

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> On Nov 16, 2024, at 4:26 PM, Andrea Corallo <acorallo <at> gnu.org> wrote:
>> 
> 
> Hi Devlin,
> 
> yes this difference is expected, 'native-compile' runs the compilation
> in the loaded Emacs so that all the definitions of loaded packages are
> known to the compiler.  'native-compile-async' runs in a new fresh Emacs
> so all requires need to be there in the compilation unit in order to let
> the compiler be able to load the definitions.
> 
> We have also some doc in (info "(elisp) Native-Compilation Variables")
> which goes like this:
> 
>    A common cause for asynchronous native-compilation to produce
>     warnings is compiling a file that is missing some ‘require’ of a
>     necessary feature.  The feature may be loaded into the main emacs,
>     but because native compilation always starts from a subprocess with
>     a pristine environment, that may not be true for the subprocess.
> 
> Regards
> 
>  Andrea

I see. Thanks for the explanation and the documentation reference!

Sean

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