From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1QaCzm-0005rg-H5 for garchives@archives.gentoo.org; Fri, 24 Jun 2011 20:28:54 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 99C261C05E; Fri, 24 Jun 2011 20:25:42 +0000 (UTC) Received: from mailout-de.gmx.net (mailout-de.gmx.net [213.165.64.22]) by pigeon.gentoo.org (Postfix) with SMTP id 15F3C1C05E for ; Fri, 24 Jun 2011 20:25:41 +0000 (UTC) Received: (qmail invoked by alias); 24 Jun 2011 20:25:40 -0000 Received: from p5B0833EC.dip.t-dialin.net (EHLO pc.localnet) [91.8.51.236] by mail.gmx.net (mp064) with SMTP; 24 Jun 2011 22:25:40 +0200 X-Authenticated: #13997268 X-Provags-ID: V01U2FsdGVkX19/1Lcac7x//HxYC33VrjU2BPGbT5gY7/Ie9MQ6Bi bHy/E9qnzJNWPd From: Michael Schreckenbauer To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Do we have to build gcc with fortran now? Date: Fri, 24 Jun 2011 22:25:39 +0200 Message-ID: <1466587.PvB50u6JAg@pc> User-Agent: KMail/4.6.0 (Linux/2.6.38-gentoo; KDE/4.6.4; x86_64; ; ) In-Reply-To: <4E04ECE0.9010109@gmail.com> References: <4E0167C4.9080100@gmail.com> <6517863.YlIiSIDa8W@pc> <4E04ECE0.9010109@gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Y-GMX-Trusted: 0 X-Archives-Salt: X-Archives-Hash: 0fd06831060968fc828bbcc26955ae5e Am Freitag, 24. Juni 2011, 15:00:32 schrieb Dale: > Michael Schreckenbauer wrote: > > Am Freitag, 24. Juni 2011, 08:04:43 schrieb Nikos Chantziaras: > >> On 06/24/2011 01:16 AM, Dale wrote: > >>> If it works with fortran turned on, I'd leave it alone. With > >>> hindsight, > >>> I should have left well enough alone anyway. It wasn't hurting a > >>> thing. > >>> Watch the elog messages. It will tell you at some point to either > >>> enable fortran or emerge some other package that I forget the name > >>> of. That one package pulled several dependencies on my rig. YMMV. > >> > >> Well, as I said in another post, I do have -fortan in my make.conf and > >> there are no problems. I do not have programs installed that need a > >> fortran compiler. And I do not have kde-meta installed; that's a > >> waste > >> of resources. I only install what I actually need. > > > > You have no programs, that *need* fortran, but it could well be, that > > you have programs installed, that perform better when compiled with a > > fortran compiler. I think of sci-libs/fftw here as an example. It's > > used by programs like blender, imagemagick and maybe some others. The > > developers of said library use fortran, because they benchmarked it. If > > you disable fortran, you use the slower C fallback solution. If you > > disable fftw in those packages, you get a slower implementation too > > afaik. > > After all, gentoo is a source based distribution. We all already have a > > couple of languages installed. There's a C compiler a standard user > > will never use. There's a C++ compiler only used by programmers. We all > > have them, only to compile programs, that need them. > > Why not enable fortran, even if it's only optional, to get the best of > > the available implementations? In the end it's only one programming > > language more installed on your system. > > > > Regards, > > Michael > > I just wonder if that is why Cantor was set up to use fortran by > default. Not because it is smaller, requires a few less package but > that it is what it is designed to run off of. It may well work with > something else but not as fast, not as good or something else we don't > know about. cantor uses R as default backend. R uses fortran. And yes, that's because of its speed, when it comes to mathematics and numerics. > Just makes me think again on this one. > > Dale > > :-) :-) Michael