Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com 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 Reply-To: cygwin@cygwin.com To: Reini Urban cc: cygwin@cygwin.com Subject: Re: Poor execution speeds using -mno-cygwin g77 option In-Reply-To: <40D3E4DC.3010804@x-ray.at> Message-ID: References: <40D34454.4050103@dynetics.com> <40D353CA.7010905@dynetics.com> <40D3E4DC.3010804@x-ray.at> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Scanned-By: MIMEDefang 2.39 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/ |\ _,,,---,,_ pechtcha@cs.nyu.edu ZZZzz /,`.-'`' -. ;-;;,_ igor@watson.ibm.com |,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 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/