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From: linux AT microsoft DOT sucks DOT eu DOT org
Date: Fri, 27 Nov 1998 22:44:32 +0100 (CET)
To: Steve <smkennedy AT uwaterloo DOT ca>
cc: beastium-list AT desk DOT nl
Subject: Re: Optimization with PGCC
In-Reply-To: <365E3B57.1B5908C1@uwaterloo.ca>
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Sender: Marc Lehmann <pcg AT goof DOT com>
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>     I just recently switched from gcc 2.8.1 to pgcc 1.1.  I would like
> to start compiling my programs passing the -O6 and -mpentiumpro switches
> to pgcc (to get the most optimization).

Add -march=pentiumpro to that.

>  I would prefer not to have to
> go into each program's makefile and edit it.  Is there a way to do this
> from the command line?  I tried :  'make CFLAGS="-O6 -mpentiumpro" but
> that overrides all the other CFLAGS.  I was wondering if there is a way
> to add to the other CFLAGS.  Anyone?

A lot of programs (including almost all ones using autoconf) will react to
a CFLAGS environment variable; try

export CFLAGS="-O6 -mpentiumpro -march=pentiumpro"
if you're in a bourne shell, or
setenv CFLAGS "-O6 -mpentiumpro -march=pentiumpro"

if you're in a c-shell.

LLaP
bero