From: ludo@gnu.org (Ludovic Courtès)
To: 宋文武 <iyzsong@member.fsf.org>
Cc: guix-devel@gnu.org
Subject: Re: [PATCH]: gnu: Add guile-dbi.
Date: Tue, 21 Jun 2016 22:56:21 +0200 [thread overview]
Message-ID: <87fus6mfbe.fsf@gnu.org> (raw)
In-Reply-To: <87inx2inou.fsf@member.fsf.org> ("宋文武"'s message of "Tue, 21 Jun 2016 23:09:05 +0800")
iyzsong@member.fsf.org (宋文武) skribis:
> ludo@gnu.org (Ludovic Courtès) writes:
>
>> Hi!
>>
>> Maurizio Boriani <baux@gnu.org> skribis:
>>
>>> I'm the maintainer and first author of guile-dbi
>>
>> Good to see you here! :-)
>>
> Oh, nice!
>
>>> >> Unfortunately, Guile DBI loads its backends using `dlopen', so I
>>> >> have to set 'LD_LIBRARY_PATH' to '$guile-dbd-sqlite/lib' for
>>> >> loading it.
>>>
>>> Ludovic> I don’t have any great ideas.
>>>
>>> Ludovic> If it uses lt_dlopen, then we should recommend setting
>>> Ludovic> LTDL_LIBRARY_PATH instead of LD_LIBRARY_PATH, which is a
>>> Ludovic> lesser evil.
>>>
>>> Ludovic> Otherwise, we could also hard-code the file name of, say,
>>> Ludovic> guile-dbd-sqlite in guile-dbi, such that there’s always at
>>> Ludovic> least one backend available.
>>>
>>> may be ok for you if I introduce and 'hardcoded' default search path
>>> for library lookup in guile-dbi source code and do a new release?
>>
>> I don’t think there’s any good default search path that we could hard
>> code, though, except arbitrarily choosing one of the backends as I
>> suggested above.
>>
>> Ideas?
> I think it will be great to introduce a new search path (eg: GUILE_DBD_PATH)
> in addition to LD_LIBRARY_PATH. Find the absolute so filepath in it
> ourself, then pass to dlopen.
Why not, but then it would be redundant with LD_LIBRARY_PATH and
LTDL_LIBRARY_PATH, which would further complicate the search rules.
> Another idea is changing dbd libraries to scheme modules. Then dbi will
> use the '(dbi dbd mysql)' module, the module may use 'load-extension'.
> So we can patch the scheme file of each dbd module.
I like this approach!
Ludo’.
next prev parent reply other threads:[~2016-06-21 20:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-18 8:09 [PATCH]: gnu: Add guile-dbi 宋文武
2016-06-20 8:24 ` Ludovic Courtès
2016-06-21 8:35 ` Maurizio Boriani
2016-06-21 14:14 ` Ludovic Courtès
2016-06-21 15:09 ` 宋文武
2016-06-21 20:56 ` Ludovic Courtès [this message]
2016-09-16 3:36 ` guile-dbi: Use libltdl and prefer GUILE_DBD_PATH 宋文武
2016-09-16 6:57 ` baux
2017-07-10 22:54 ` Linas Vepstas
2017-07-11 11:02 ` 宋文武
2017-07-11 18:31 ` Nala Ginrut
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