From: "Mirko Vukovic" <mirko.vukovic@gmail.com>
To: cygwin@cygwin.com
Subject: Re: how to build gsl dll
Date: Mon, 18 Feb 2008 01:12:00 -0000 [thread overview]
Message-ID: <d990efca0802171650p7a9c70afvec4ce80b798eafa2@mail.gmail.com> (raw)
In-Reply-To: <47B888D6.40037BBA@dessent.net>
On Sun, Feb 17, 2008 at 2:19 PM, Brian Dessent <brian@dessent.net> wrote:
> Mirko Vukovic wrote:
>
> > I am trying to build a dll for gsl. I want to link it to clisp.
>
> Why? The Cygwin gsl packages already contains everything you need,
> including both shared and static versions. Install the 'gsl' package
> for the runtime files (the DLL) and install 'gsl-devel' for the
> developer files (headers, import library, static library, libtool
> library.) You don't have to do anything.
>
>
> > On the other hand the gsl executable contains the *.a, *.dll.a and
> > *.la files. Is there a way to convert them to the dll.a
>
> That doesn't make any sense. There is no need to convert anything, not
> that that's even possible.
>
>
> > Frankly, I started dealing with libraries only about a week ago, and
> > while I understand the .a, .so, .dll types (I think), I'm not sure
> > about dll.a and .la.
>
> For a package 'foo' cygfoo-n.dll is the shared library, it goes in
> /usr/bin since it must be in the PATH. This is the only file that is
> actually used at runtime[1], as opposed to link time. n is the ABI
> version, if present. libfoo.dll.a is the import library for
> cygfoo-n.dll and it goes in /usr/lib. An import library is just an aide
> for the linker, it contains no actual code. libfoo.a is the static
> version of the library, and also goes in /usr/lib. Sometimes import
> libraries are also named libfoo.a too but this practice is discouraged,
> it's mostly legacy things like all the w32api import libs that are still
> named this way. Import libraries can also be renamed as foo.lib if they
> are to be used by the MS toolchain. libfoo.la is the libtool library,
> it's just a text file that describes aspects of the library and is used
> by libtool if you use that to link.
>
> Brian
>
> [1] Okay technically the libtool .la file could be read at runtime if
> the library is dlopened with libltdl, but that's probably not relevant
> here.
>
Thank you. I found it: cyggsl-0.dll, cyggslcblas-0.dll in /usr/bin.
Thank you very much for the explanation.
Mirko
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next prev parent reply other threads:[~2008-02-18 0:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-17 20:49 Mirko Vukovic
2008-02-17 22:18 ` Brian Dessent
2008-02-18 1:12 ` Mirko Vukovic [this message]
2008-02-18 17:04 ` Reini Urban
2008-02-18 17:58 ` Mirko Vukovic
2008-02-18 22:21 ` Reini Urban
2008-02-18 22:47 ` [cffi-devel] " Mirko Vukovic
2008-02-19 1:57 ` Luís Oliveira
2008-02-19 20:43 ` Mirko Vukovic
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