From: Pascal Obry <pascal@obry.net>
To: Alex Mentis <foo@invalid.invalid>
Subject: Re: Import pragma question
Date: Wed, 23 Mar 2011 09:45:17 +0100
Date: 2011-03-23T09:45:17+01:00 [thread overview]
Message-ID: <4D89B31D.8010203@obry.net> (raw)
In-Reply-To: <imcaor$u2l$1@news.eternal-september.org>
Alex,
> I've never interfaced Ada with other languages, so I have some
> questions about pragma Import. How does an import pragma know where to
> find the non-Ada code to be used for the import?
By passing the corresponding object file or library to the linker. No
magic! With GNAT you can use:
$ gnat make main.adb -largs -lmylib
And possibly the PATH to this library with -L<path>/<to>/<lib>.
Where mylib.a (or mylib .dll or .so) contains the symbols from the
foreign language. Another option is to a add a pragma Linker_Options
into one of the sources.
pragma Linker_Options ("-lmylib");
Pascal.
--
--|------------------------------------------------------
--| Pascal Obry Team-Ada Member
--| 45, rue Gabriel Peri - 78114 Magny Les Hameaux FRANCE
--|------------------------------------------------------
--| http://www.obry.net - http://v2p.fr.eu.org
--| "The best way to travel is by means of imagination"
--|
--| gpg --keyserver keys.gnupg.net --recv-key F949BD3B
next prev parent reply other threads:[~2011-03-23 8:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-23 8:25 Import pragma question Alex Mentis
2011-03-23 8:45 ` Pascal Obry [this message]
2011-03-23 8:45 ` Pascal Obry
2011-03-23 9:06 ` Alex Mentis
2011-03-23 16:51 ` Jeffrey Carter
2011-03-23 17:40 ` Alex Mentis
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox