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bug#50666: 28.0.50; Fix native compilation on Cygwin
From: |
Eli Zaretskii |
Subject: |
bug#50666: 28.0.50; Fix native compilation on Cygwin |
Date: |
Thu, 23 Sep 2021 20:48:16 +0300 |
> From: Achim Gratz <Stromeko@nexgo.de>
> Date: Thu, 23 Sep 2021 19:27:56 +0200
>
> Eli Zaretskii writes:
> > What do you mean by "system libraries" here? Does it, for example,
> > include the DLLs distributed in the Cygwin port of libpng or libjpeg?
> > Or does that include only the basic libraries: the Cygwin DLL, the C
> > runtime, etc.?
>
> Any and all dynamic objects that have been properly installed by the
> Cygwin setup application will have their base addresses adjusted so that
> there will be no overlapping images. The rebase process tries to keep
> this space reasonably compact, if you really need to have the most
> compact address space you can trigger a full rebase.
Out of curiosity, what do you do with the myriad DLLs that Windows
itself provides? Aren't they part of the same problem with the Cygwin
implementation of 'fork'?
> > window-0d1b8b93-3370bedb.eln
> > window-0d1b8b93-7d08b7b4.eln
> > window-0d1b8b93-f8fc9683.eln
> >
> > This makes the job of maintaining the database by hand even harder and
> > more error-prone.
>
> I have been wondering about that, especially since the user might have
> the same home directory on different machines. That will be a major
> headache since we'll either need to find out which object belongs to
> which system (and have separate maps for each) or somehow ensure that
> the user rebase map is compatible with all systems the user works on.
> Skipping that part for now, all such objects must be the same
> architecture (i686-pc-cygwin / x86_64-pc-cygwin) and there should be
> some sort of architecture specific branches in the cache directory,
> which I seem to remember was already the case.
No, there are no architecture-specific branches. I guess the idea is
that the 2 hashes in the file name and the 3rd has in the directory
name (which depends on the Emacs binary) will take care of that.
- bug#50666: 28.0.50; Fix native compilation on Cygwin, (continued)
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Ken Brown, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Ken Brown, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Achim Gratz, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Achim Gratz, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Achim Gratz, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin,
Eli Zaretskii <=
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Achim Gratz, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Andrea Corallo, 2021/09/23
- bug#50666: 28.0.50; Fix native compilation on Cygwin, ASSI, 2021/09/24
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/24
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Andrea Corallo, 2021/09/24
- bug#50666: 28.0.50; Fix native compilation on Cygwin, ASSI, 2021/09/24
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/24
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Eli Zaretskii, 2021/09/25
- bug#50666: 28.0.50; Fix native compilation on Cygwin, Andrea Corallo, 2021/09/23