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Re: Building C++ with --enable-languages=c,fortran
- From: Toon Moene <toon at moene dot org>
- To: Mikael Morin <mikael dot morin at sfr dot fr>
- Cc: fortran at gcc dot gnu dot org, Thomas Koenig <tkoenig at netcologne dot de>, gcc at gcc dot gnu dot org, iant at google dot com
- Date: Sat, 06 Aug 2011 15:16:43 +0200
- Subject: Re: Building C++ with --enable-languages=c,fortran
- References: <4E3C7412.2010100@netcologne.de> <201108061122.24403.mikael.morin@sfr.fr>
On 08/06/2011 11:22 AM, Mikael Morin wrote:
WRT to bootstrap time, as usual: it's too long.
Well, that all depends on your (time) frame of reference, of course. In
the summer months leading up to Craig Burley asking for volunteers
testing g77 (the g77-alpha phase), i.e., during the summer of 1992, a
bootstrap of GCC (C and C++) took 8 hours on my single 25 Mhz Motorola
68040 powered Next Station.
With the new gcc, I could build a fresh f2c in minutes, and, using that
combo (f2c+gcc) a recompile of our weather forecasting code took another
10 minutes.
Nowadays, on a *4 year old* quad core Core 2 machine, building C, C++,
Ada and Fortran takes less than 2 hours, so given that I put in 4 times
as many processors, the rest of the hardware keeps up with providing me
a bootstrap in 1/4th of the time it took 19 years ago, giving me twice
the number of front ends plus run time libraries.
I think the outlook is good :-)
--
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/; weather: http://moene.org/~hirlam/
Progress of GNU Fortran: http://gcc.gnu.org/wiki/GFortran#news