Mail Archives: djgpp/1998/08/04/09:22:23
Reply-To: | <arfa AT clara DOT net>
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From: | "Arthur" <arfa AT clara DOT net>
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To: | "DJGPP Mailing List" <djgpp AT delorie DOT com>
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Subject: | RE: Optimised Allegro
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Date: | Tue, 4 Aug 1998 14:22:25 +0100
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Message-ID: | <000601bdbfaa$eb643380$ec4b08c3@arthur>
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MIME-Version: | 1.0
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Importance: | Normal
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In-Reply-To: | <19980803.224756.6494.0.matthew.krause@juno.com>
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> I was just rebuilding Allegro a second ago, and I noticed that the
> makefile said:
>
> # build a normal optimised version
> ifdef PGCC
> OFLAGS = -mpentium -O6 -ffast-math -fomit-frame-pointer
> else
> OFLAGS = -m486 -O3 -ffast-math -fomit-frame-pointer
> endif
>
>
> However, I'm running on A P166. Short of getting PGCC, is there a way to
> optmise Allegro? I remember reading on this newsgroup something about a
> switch like -march586. I'm using GCC version 2.8.1. Anyone feel like
> reminding me? Thanks.
I think you can use -march=pentium -cpu=pentium and -mpentium
Dunno about anyone else, but I don't seem to have had any improvements with PGCC?
Most of my programs run slower with -O6 than with -O3. Can anyone explain this?
James Arthur
jaa AT arfa DOT clara DOT net
ICQ#15054819
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