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X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date: Sat, 19 Jun 2004 17:29:08 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Reini Urban <rurban AT x-ray DOT at>
cc: cygwin AT cygwin DOT com
Subject: Re: Poor execution speeds using -mno-cygwin g77 option
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On Sat, 19 Jun 2004, Reini Urban wrote:

> Igor Pechtchanski schrieb:
>  > On Fri, 18 Jun 2004, Douglas A. Vechinski wrote:
>  >>To my knowledge, I'm not using floating point emulation.  But if I was,
>  >>how would I be able to check?
>  >
>  > Actually, my WAG may turn out to be right after all.  Check the default
>  > target architecture (processor) for both Linux and Cygwin -- you might
>  > find that the default target for Cygwin is i386, and for Linux it's
>  > something like i686/pentiumpro.
>
> No:
> gcc -dumpmachine => i686-pc-cygwin (for v3.3.1 and v2.95.2-5)
> For -mno-cygwin also.
>
> v2.95.2-5:
> *cpp_cpu_default:
> %(cpp_686)

Having little experience reading the specs files (and the output of
-dumpspecs) seems to have lead me astray.  I still think it may be a good
idea to ensure hardware fp by using -mhard-float explicitly (and perhaps
other options, like -march=i686).  If someone knows a way to find out
exactly what all of the default options are, please follow up in this
thread.  Thanks,
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton

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