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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: native-compilation: how to force the .eln files to be built
Date: Tue, 13 Apr 2021 05:30:31 +0300
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To: Ken Brown <kbrown@cornell.edu>
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In-Reply-To: <4d692d01-a87b-8adb-715a-24be9a05a27f@cornell.edu> (message from
 Ken Brown on Mon, 12 Apr 2021 18:07:53 -0400)
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> From: Ken Brown <kbrown@cornell.edu>
> Date: Mon, 12 Apr 2021 18:07:53 -0400
> 
> Is there an easy way to force the .eln files to be built if the .elc files are 
> up to date?

No, at least not for some value of "easy".  (How would you do that for
.elc files?)

> I often have more than one build directory for a given source directory.  The 
> different build directories might correspond to different configure options or 
> different architectures, for example.  After building in one directory, the .elc 
> files in the source directory are all up to date.  If I now build in a different 
> directory, the .eln files might be out of date or even non-existent, but they 
> don't get (re)built.

I wrote a script that compiles all the preloaded *.el files, and I run
that script in such situations.