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Date: Wed, 11 Jun 2025 02:16:25 +0000
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: libguile3.0_1-3.0.9-3: possible bug with packaged readline library:
 guile-readline.dll not found
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From: Ira Peach via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Ira Peach <yoshi_says_acab AT proton DOT me>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

Hello,

I found a possible bug with the readline library included in
libguile3.0_1-3.0.9-3 and using it with guile3.0-3.0.9-3.

After invoking guile, I tried to load the readline library, and received
an error that guile-readline.dll is not found:

    $ guile
    GNU Guile 3.0.10
    Copyright (C) 1995-2024 Free Software Foundation, Inc.

    Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
    This program is free software, and you are welcome to redistribute it
    under certain conditions; type `,show c' for details.

    Enter `,help' for help.
    scheme@(guile-user)> (use-modules (ice-9 readline))
    While compiling expression:
    In procedure dlopen: file "guile-readline.dll", message "No such file or directory"

However, I found a guile-readline-0.dll, and linked it to
guile-readline.dll as a sibling, and the readline library successfully
loads and activates (and seems to work so far):

    $ find /usr/ -iname '*guile*readline*'
    /usr/lib/guile/3.0/extensions/guile-readline-0.dll
    /usr/lib/guile/3.0/extensions/guile-readline.la

    $ ln -s /usr/lib/guile/3.0/extensions/guile-readline-0.dll /usr/lib/guile/3.0/extensions/guile-readline.dll

    $ guile
    GNU Guile 3.0.10
    Copyright (C) 1995-2024 Free Software Foundation, Inc.

    Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
    This program is free software, and you are welcome to redistribute it
    under certain conditions; type `,show c' for details.

    Enter `,help' for help.
    scheme@(guile-user)> (use-modules (ice-9 readline))
    scheme@(guile-user)> (activate-readline)

I am not sure if there is a command I missed to link libraries like this
automatically, or if this is a bug.

I didn't find guile-readline.dll in any packages, so I don't believe
this is a package missing:
https://cygwin.com/cgi-bin2/package-grep.cgi?grep=guile-readline.dll

Thoughts?

Thank you!
--Ira Peach

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