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Re: Emacs 28 pretest MS Windows snapshots

From: Phillip Lord
Subject: Re: Emacs 28 pretest MS Windows snapshots
Date: Sat, 04 Jul 2020 15:19:24 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.91 (gnu/linux)

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Phillip Lord <phillip.lord@russet.org.uk>
>> Cc: drew.adams@oracle.com,  emacs-devel@gnu.org
>> Date: Sat, 04 Jul 2020 14:09:18 +0100
>> > Yes, you need to include it like you do with libxpm.
>> Hmmm. This perhaps rather stretches the definition of "no-deps". At
>> the
>> moment, I include libXpm because historically it was always
>> distributed
>> with the built emacs (although emacs will run without it).
>> The problem is that the libXpm.dll I use is very carefully
>> selected. It
>> isn't actually from msys and I always use the same one (on the basis
>> that libXpm is never, ever going to be updated), because I had
>> significant problems with some versions of libXpm from Msys having
>> dependencies (libwinpthread, I think).
>> So, I think that there is a decision point here. I could make the
>> "no-deps" download what it says it is, and have no deps (including
>> libXpm). As the version with deps is now the default suggested
>> option
>> this might more sense. Otherwise I risk the no-deps version getting
>> more
>> dependencies in an unpredictable manner.
> I'm not sure I see the significance of adding one more library to the
> no-deps distribution.  If you are afraid of dependencies of libgmp,
> then I don't think its MSYS2 version has any, does it?  If the
> dependencies of libgmp is not the issue, then what is?
> In any case, if you build Emacs with libgmp, you _must_ accompany the
> binary with the DLL you used at build time, because, unlike libxpm,
> libgmp is a static dependency of Emacs, and Emacs will refuse to start
> if it isn't present.  If that's not what you want, you only
> alternatives are:
>   . link against libgmp statically, or
>   . build Emacs without libgmp, using src/minigmp.c instead

Sorry, should have said, adding libgmp-10.dll to Emacs-28 makes it
launch okay.


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