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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Emacs ada-mode installation on Debias bullseye
Date: Sun, 05 Sep 2021 10:55:31 +0100
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R R <rrr.eee.27@gmail.com> writes:

> I recently upgraded my Debian machine to bullseye. By then Emacs'
> ada-mode stopped working as it couldn't find some dynamic library. So
> I reinstalled ada-mode 7.1.8 and now I have to compile the wisi
> parser. First I had to install libgnatcoll19-dev. But I still get the
> error messages:
>
> ada_mode_wisi_parse.gpr:22:06: imported project file "gnatcoll_sqlite" not found
> ada_mode_wisi_parse.gpr:23:06: imported project file "gnatcoll_xref" not found
>
> So I tried to install libgnatcoll-sqlite20-dev, but that doesn't exist
> and libgnatcoll-sqlite20 doesn't provide a gpr file.

I don't know about the Debian system, but wouldn't the numbers have to
match (i.e., 19 vs 20)?

If you can't find the prebuilt -dev package, try building from source as
suggested here:
https://www.nongnu.org/ada-mode/ada-mode.html#Building-GNATCOLL-2019 -
probably best to install in a private location, not over the
system. Also, when you get to the Github repo, the v21.0.0 package may
have compilation issues depending on your compiler: there are very few
changes between that version and the latest commit.

>                                                      I tried to
> comment out gnatcoll_sqlite and gnatcoll_xref in
> ada_mode_wisi_parse.gpr.gp to no avail.

Since the wisi parser relies on the facilities provided by these two
packages, that is *guaranteed* not to work!