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From: David E. Wheeler <[email protected]>
To: Peter Eisentraut <[email protected]>
Cc: Craig Ringer <[email protected]>
Cc: Gabriele Bartolini <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: RFC: Additional Directory for Extensions
Date: Mon, 18 Nov 2024 14:19:07 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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Hi Peter,

Making another pass at this proposal, I’m a bit confused by this issue:

On Nov 12, 2024, at 09:44, David E. Wheeler <[email protected]> wrote:

>>>> - The biggest problem is that many extensions set in their control file
>>>> 
>>>>   module_pathname = '$libdir/foo'
>>>> 
>>>> This disables the use of dynamic_library_path, so this whole idea of installing an extension elsewhere won't work that way.  The obvious solution is that extensions change this to just 'foo'.  But this will require a lot updating work for many extensions, or a lot of patching by packagers.
> 
> Yeah, '$libdir/foo' has been the documented way to do it for quite some time, as I recall. Perhaps the behavior of the MODULE_PATHNAME replacement function could be changed to omit $libdir when writing the SQL files?

Elsewhere you write:

> Nothing changes about shared library files.  They are looked up in dynamic_library_path or any hardcoded file name.

And also point out that the way to install them is:

```
make install datadir=/else/where/share pkglibdir=/else/where/lib
```

So as long as dynamic_library_path includes /else/where/lib it should work, just as before, no?

Best,

David







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