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Date: Sun, 10 Feb 2013 11:34:10 -0800
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Anton Shterenlikht <mexas@bristol.ac.uk>
Subject: Re: 7+ days of dogfood
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On Sun, Feb 10, 2013 at 07:24:03PM +0000, Anton Shterenlikht wrote:
> 	From sgk@troutmask.apl.washington.edu Sun Feb 10 19:06:10 2013
> 	On Sun, Feb 10, 2013 at 06:51:23PM +0000, Anton Shterenlikht wrote:
> 	> 	Date: Sun, 10 Feb 2013 08:44:24 -0800
> 	> 	From: Steve Kargl <sgk@troutmask.apl.washington.edu>
> 	> 	To: Boris Samorodov <bsam@passap.ru>
> 	> 	Subject: Re: 7+ days of dogfood
> 	> 
> 	> 	> >   FFLAGS = -O2 -pipe -march=native -mtune=native
> 	> 	> 
> 	> 	> I don't like using "=" for FLAGS at make.conf...
> 	> 	> 
> 	> 	> >   FFLAGS+= -funroll-loops -ftree-vectorize
> 	> 	> 
> 	> 	> ... as well as defaults overriding.
> 	> 	> 
> 	> 
> 	> 	FFLAGS are the options used while compiling Fortran.  Having
> 	> 	spent years contributing to and testing gfortran, I am fairly
> 	> 	comfortable with these options.
> 	> 
> 	> Do you recommend these FFLAGS settings to all
> 	> users of gfortran (via lang/gcc4x)?
> 
> 	Yes.
> 
> And for all arches? I use ia64, sparc64 and amd64.
> 

I use these on amd64 and i386 arches.  I rarely use spacr64
(mainly for development of ld128 libm functions) and never
use ia64.  Choose one of your codes and test.

-- 
Steve